WO2021226889A1 - 液压调节装置、液压调节系统、制动系统及控制方法 - Google Patents

液压调节装置、液压调节系统、制动系统及控制方法 Download PDF

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Publication number
WO2021226889A1
WO2021226889A1 PCT/CN2020/090091 CN2020090091W WO2021226889A1 WO 2021226889 A1 WO2021226889 A1 WO 2021226889A1 CN 2020090091 W CN2020090091 W CN 2020090091W WO 2021226889 A1 WO2021226889 A1 WO 2021226889A1
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WIPO (PCT)
Prior art keywords
hydraulic
brake
piston
push rod
port
Prior art date
Application number
PCT/CN2020/090091
Other languages
English (en)
French (fr)
Inventor
张永生
杨维妙
张伟
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN202080004182.3A priority Critical patent/CN112566824B/zh
Priority to PCT/CN2020/090091 priority patent/WO2021226889A1/zh
Priority to EP20935956.1A priority patent/EP4147929A4/en
Priority to CN202210101908.6A priority patent/CN114620016B/zh
Publication of WO2021226889A1 publication Critical patent/WO2021226889A1/zh
Priority to US17/985,486 priority patent/US20230071109A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16Master control, e.g. master cylinders
    • B60T11/20Tandem, side-by-side, or other multiple master cylinder units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/142Systems with master cylinder
    • B60T13/145Master cylinder integrated or hydraulically coupled with booster
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/142Systems with master cylinder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16Master control, e.g. master cylinders
    • B60T11/18Connection thereof to initiating means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/142Systems with master cylinder
    • B60T13/147In combination with distributor valve
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66Electrical control in fluid-pressure brake systems
    • B60T13/662Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66Electrical control in fluid-pressure brake systems
    • B60T13/68Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/745Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18Safety devices; Monitoring
    • B60T17/22Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00Brake-action initiating means
    • B60T7/02Brake-action initiating means for personal initiation
    • B60T7/04Brake-action initiating means for personal initiation foot actuated
    • B60T7/042Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4072Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
    • B60T8/4081Systems with stroke simulating devices for driver input

Definitions

  • This application relates to the field of automobiles, and more specifically, to a hydraulic adjustment device, a hydraulic adjustment unit, a brake system and a control method of a brake system in an automobile.
  • the braking system of a car is a system that applies a certain braking force to the wheels of the car to perform a certain degree of forced braking.
  • the function of the braking system is to force a driving car to decelerate or even stop according to the requirements of the driver or the controller, or to make a stopped car park stably under various road conditions (for example, on a ramp), or to make The speed of the car driving downhill remains stable.
  • the electro-hydraulic brake system (Electro-Hydraulic Brake, EHB), as a popular brake system, usually includes a hydraulic adjustment device.
  • the hydraulic adjustment device can increase or decrease the pressure of the brake fluid in the brake system based on the driving demand of the vehicle. For example, when the brake system works in the online control mode, when the driver steps on the brake pedal, the hydraulic pressure adjusting device can pump the brake hydraulic pressure into the brake line based on the stroke of the brake pedal to provide braking force for the car. For another example, in the automatic driving mode, when the automatic driving system confirms that it needs to decelerate and stop, the hydraulic pressure adjusting device may, based on the command of the controller, inject the brake hydraulic pressure into the brake line to provide braking force for the car.
  • the hydraulic adjustment device can draw the brake fluid from the brake wheel cylinder of the car to the fluid storage device based on the stroke of the brake pedal. To reduce the braking force of the car.
  • the hydraulic adjusting device can pump the brake fluid from the brake wheel cylinder of the car to the liquid storage device based on the command of the controller, so as to reduce the size of the car. The braking force.
  • the most popular hydraulic adjustment device is a hydraulic adjustment device with a two-way pressure-increasing/decompression function.
  • the hydraulic cylinder in the hydraulic adjusting device is divided into two hydraulic chambers by the piston, and the two hydraulic chambers respectively include a flow channel for brake fluid to realize the flow of brake fluid in or out.
  • the hydraulic pressure chamber flows into the liquid storage device, and each flow channel needs to be equipped with a corresponding control valve to control the flow direction of the brake fluid in the flow channel. This type of connection makes it impossible to reduce the number of control valves in the brake system, which is not conducive to reducing the cost of the brake system.
  • the present application provides a hydraulic adjustment device, a hydraulic adjustment unit, a braking system and a control method thereof, so as to reduce the number of control valves in the hydraulic adjustment unit and reduce the cost of the hydraulic adjustment unit.
  • a hydraulic adjustment device including: a hydraulic cylinder 11; a piston 12; a push rod 13; the push rod 13 is used to push the piston 12 to move along the inner wall of the hydraulic cylinder 11 to form a piston stroke;
  • the piston 12 separates the hydraulic cylinder 11 into a first hydraulic chamber 16 and a second hydraulic chamber 17; the end of the first hydraulic chamber 16 is provided with a push rod support 14 which is used for The push rod 13 is supported, and the push rod support portion 14 is provided with a first hydraulic adjustment port 14a; the push rod 13 is provided with a second hydraulic adjustment port 13a.
  • the first end is in communication with the first hydraulic chamber 16, and when the piston 12 is at the inner dead center of the piston stroke, the first hydraulic adjustment port 14a is in communication with the second end of the second hydraulic adjustment port 13a, When the piston 12 is located at a position other than the inner dead center in the piston stroke, the first hydraulic pressure adjustment port 14a is not connected to the second end of the second hydraulic pressure adjustment port 13a.
  • the liquid outlet pipeline of the first hydraulic chamber 16 is arranged in sections on the push rod support portion 14 corresponding to the first hydraulic adjustment port 14a and the push rod 13 corresponds to the second hydraulic adjustment port 13a. In this way, when the piston 12 is at the inner dead center of the piston stroke, the first hydraulic pressure adjustment port 14a communicates with the second end of the second hydraulic pressure adjustment port 13a.
  • the adjustment port 14a is not connected to the second end of the second hydraulic adjustment port 13a, that is, the on-off state of the first hydraulic adjustment port 14a and the second hydraulic adjustment port 13a is controlled by the position of the piston 12 in the piston stroke, avoiding the traditional
  • the hydraulic adjustment device needs to be specially equipped with a control valve for the first hydraulic chamber 16 to control the on and off of the outlet pipe of the first hydraulic chamber 16, which is beneficial to reduce the amount of control valves used in the hydraulic adjustment unit with the hydraulic adjustment device. Quantity, reduce the cost in the hydraulic adjustment unit.
  • first end of the second hydraulic adjustment port 13a is in communication with the first hydraulic chamber 16, which may include the first end of the second hydraulic adjustment port 13a and the first end of the second hydraulic adjustment port 13a when the piston 12 is at the inner dead center of the piston stroke.
  • the first hydraulic chamber 16 is in communication; or, when the piston 12 is at all positions in the piston stroke, the first end of the second hydraulic pressure adjustment port 13a is in communication with the first hydraulic chamber 16.
  • the brake fluid in the first hydraulic chamber 16 communicates with the first hydraulic pressure adjustment port 14a through the The second hydraulic pressure adjusting port 13a discharges the first hydraulic pressure chamber 16.
  • the liquid outlet pipeline of the first hydraulic chamber 16 is arranged in sections on the push rod support portion 14 corresponding to the first hydraulic adjustment port 14a and the push rod 13 corresponds to the second hydraulic adjustment port 13a.
  • the first hydraulic pressure adjustment port 14a is in communication with the second hydraulic pressure adjustment port 13a, and the brake fluid in the first hydraulic chamber 16 can pass through the connected first hydraulic pressure adjustment port 14a and the second hydraulic pressure adjustment port 13a.
  • the adjustment port 13a discharges the first hydraulic chamber 16, which is beneficial to reduce the number of control valves in the hydraulic adjustment unit and reduce the cost in the hydraulic adjustment unit.
  • an annular or semi-annular first diversion groove 13b is provided along the outer circumference of the push rod 13, and the first diversion groove 13b and the second hydraulic adjustment port The second end of 13a is connected.
  • the first guide groove 13b communicates with the first hydraulic pressure regulating port 14a.
  • an annular or semi-annular second diversion groove 13c is provided along the inner periphery of the push rod support portion 14, and the second diversion groove 13c is connected to the first diversion groove 13c.
  • the hydraulic pressure adjustment port 14a is in communication.
  • the second guide groove 13c is in communication with the second end of the second hydraulic pressure adjustment port 13a.
  • the second hydraulic pressure adjustment port 13a is obliquely arranged on the push rod 13 and penetrates the push rod 13, and the first end of the second hydraulic pressure adjustment port 13a and the piston The distance between 12 is shorter than the distance between the second end of the second hydraulic adjustment port 13a and the piston 12.
  • the connected first The two hydraulic pressure adjustment ports 13a and the first hydraulic pressure adjustment port 14a may communicate with the first hydraulic chamber 16.
  • the push rod support 14 and the second hydraulic adjustment port 13a are spaced apart to avoid the push rod support 14 from blocking the second hydraulic adjustment port 13a, which is beneficial to convenience
  • the brake fluid flows into the second hydraulic adjustment port 13a, which improves the pressure reduction efficiency of the hydraulic adjustment device.
  • a hydraulic adjustment unit including: a hydraulic adjustment device 10, the hydraulic adjustment device 10 includes a hydraulic cylinder 11, a piston 12, and a push rod 13, wherein the piston 12 divides the hydraulic cylinder 11 into The first hydraulic chamber 16 and the second hydraulic chamber 17; a driving device 15 for driving the push rod 13 to push the piston 12 to move along the inner wall of the hydraulic cylinder 11 and form a piston stroke; the first hydraulic pressure
  • the end of the cavity 16 is provided with a push rod support 14 which is used to support the push rod 13, and the push rod support 14 is provided with a first hydraulic adjustment port 14a.
  • a hydraulic adjustment port 14a is connected to the first outlet pipe 180 of the hydraulic adjustment unit; the push rod 13 is provided with a second hydraulic adjustment port 13a, and the first end of the second hydraulic adjustment port 13a is connected to the first end of the second hydraulic adjustment port 13a.
  • the first hydraulic chamber 16 is in communication; when the piston 12 is at the inner dead center of the piston stroke, the first hydraulic pressure adjustment port 14a communicates with the second end of the second hydraulic pressure adjustment port 13a, and the first hydraulic pressure
  • the brake fluid in the chamber 16 is discharged from the first hydraulic chamber 16 through the first fluid outlet line 180, when the piston 12 is located at a position other than the inner dead center in the piston stroke ,
  • the first hydraulic pressure regulating port 14a is not connected to the second end of the second hydraulic pressure regulating port 13a.
  • the liquid outlet pipeline of the first hydraulic chamber 16 is arranged in sections on the push rod support portion 14 corresponding to the first hydraulic adjustment port 14a and the push rod 13 corresponds to the second hydraulic adjustment port 13a. In this way, when the piston 12 is at the inner dead center of the piston stroke, the first hydraulic pressure adjustment port 14a communicates with the second end of the second hydraulic pressure adjustment port 13a.
  • the adjustment port 14a is not connected to the second end of the second hydraulic adjustment port 13a, that is, the on-off state of the first hydraulic adjustment port 14a and the second hydraulic adjustment port 13a is controlled by the position of the piston 12 in the piston stroke, avoiding the traditional
  • the hydraulic adjustment device needs to be specially equipped with a control valve for the first hydraulic chamber 16 to control the on and off of the outlet pipe of the first hydraulic chamber 16, which is beneficial to reduce the number of control valves in the hydraulic adjustment unit and reduce the number of control valves in the hydraulic adjustment unit. the cost of.
  • the first hydraulic pressure chamber 16 is provided with a third hydraulic pressure adjustment port 11a, and the first hydraulic pressure chamber 16 adjusts the control system in the hydraulic pressure adjustment unit through the third hydraulic pressure adjustment port 11a.
  • the three hydraulic adjustment ports 11a are in communication with the first end of the second hydraulic adjustment port 13a.
  • the first hydraulic pressure adjustment port 14a, the second hydraulic pressure adjustment port 13a and the third hydraulic pressure adjustment port 11a communicate with each other, and the brake in the first hydraulic chamber 16
  • the fluid can be discharged from the first hydraulic chamber 16 through the connected first hydraulic adjustment port 14a, the third hydraulic adjustment port 11a, and the second hydraulic adjustment port 13a, which is beneficial to reduce the number of control valves in the hydraulic adjustment unit and reduce the amount of control valves in the hydraulic adjustment unit. cost.
  • an annular or semi-annular first diversion groove 13b is provided along the outer circumference of the push rod 13, and the first diversion groove 13b and the second hydraulic adjustment port The second end of 13a is in communication, and the first diversion groove 13b is in communication with the first hydraulic adjustment port 14a.
  • an annular or semi-annular second diversion groove 13c is provided along the inner periphery of the push rod support portion 14, and the second diversion groove 13c is connected to the first diversion groove 13c.
  • the hydraulic adjustment port 14a is in communication, and the second diversion groove 13c is in communication with the second end of the second hydraulic adjustment port 13a.
  • the second hydraulic pressure adjustment port 13a is obliquely arranged on the push rod 13 and penetrates the push rod 13, and the first end of the second hydraulic pressure adjustment port 13a and the piston The distance between 12 is shorter than the distance between the second end of the first hydraulic pressure regulating port 14a and the piston 12.
  • the connected first The two hydraulic pressure adjustment ports 13a and the first hydraulic pressure adjustment port 14a may communicate with the first hydraulic chamber 16.
  • a brake system in a third aspect, includes: a hydraulic adjustment device 10, the hydraulic adjustment device 10 includes a hydraulic cylinder 11, a piston 12, and a push rod 13, wherein the piston 12 connects the The hydraulic cylinder 11 is divided into a first hydraulic chamber 16 and a second hydraulic chamber 17; a driving device 15 for driving the push rod 13 to push the piston 12 to move along the inner wall of the hydraulic cylinder 11 and form a piston Stroke, the piston 12 separates the hydraulic cylinder into a first hydraulic chamber 16 and a second hydraulic chamber 17; the end of the first hydraulic chamber 16 is provided with a push rod support part 14, the push rod support part 14 It is used to support the push rod 13, and the push rod support portion 14 is provided with a first hydraulic pressure adjustment port 14a, and the first hydraulic pressure adjustment port 14a is connected to the first liquid outlet pipe 180 of the brake system
  • the push rod 13 is provided with a second hydraulic adjustment port 13a, and the first end of the second hydraulic adjustment port 13a communicates with the first hydraulic chamber 16; when the piston 12 is located
  • the liquid outlet pipeline of the first hydraulic chamber 16 is arranged in sections on the push rod support portion 14 corresponding to the first hydraulic adjustment port 14a and the push rod 13 corresponds to the second hydraulic adjustment port 13a. In this way, when the piston 12 is at the inner dead center of the piston stroke, the first hydraulic pressure adjustment port 14a communicates with the second end of the second hydraulic pressure adjustment port 13a.
  • the adjustment port 14a is not connected to the second end of the second hydraulic adjustment port 13a, that is, the on-off state of the first hydraulic adjustment port 14a and the second hydraulic adjustment port 13a is controlled by the position of the piston 12 in the piston stroke, avoiding the traditional
  • the hydraulic adjustment device needs to be specially equipped with a control valve for the first hydraulic chamber 16 to control the on and off of the outlet pipe of the first hydraulic chamber 16, which is beneficial to reduce the number of control valves in the hydraulic adjustment unit and reduce the number of control valves in the hydraulic adjustment unit. the cost of.
  • the brake system further includes a third brake pipe 130, and the first hydraulic chamber 16 passes through the third brake pipe 130 and the brake system in the brake system.
  • the moving wheel cylinders 311 and 312 are connected.
  • the brake fluid in the brake wheel cylinders 311 and 312 flows to the third brake pipeline 130
  • the first hydraulic pressure chamber 16 flows to the liquid storage device 30 through the second end of the second hydraulic pressure adjusting port 13a and the first hydraulic pressure adjusting port 14a.
  • the liquid outlet pipeline of the first hydraulic chamber 16 is arranged in sections on the push rod support portion 14 corresponding to the first hydraulic adjustment port 14a and the push rod 13 corresponds to the second hydraulic adjustment port 13a.
  • the brake fluid in the wheel brake cylinders 311 and 312 can flow to the first hydraulic chamber 16 through the third brake pipeline 130 and pass through the first hydraulic pressure adjustment port 13a.
  • the two ends and the first hydraulic adjustment port 14a flow to the liquid storage device 30, which is beneficial to reduce the number of control valves in the hydraulic adjustment unit and reduce the cost in the hydraulic adjustment unit.
  • the third prescribed pipeline 130 can be connected to the second pipeline 60, that is, the first hydraulic chamber 16 is connected to the brake wheel in the brake system through the third brake pipeline 130 and the second pipeline 60.
  • the cylinders 311 and 312 are connected.
  • the braking system further includes a first pipeline 60, and the first hydraulic chamber 16 communicates with the second hydraulic chamber 17, when the piston 12 compresses the capacity of the second hydraulic chamber 17, so that when the brake wheel cylinders 311 and 312 in the brake system are pressurized, the first hydraulic pressure adjustment port 14a and the second hydraulic pressure adjustment port 13a The two ends are not connected, and part of the brake fluid in the second hydraulic chamber 17 flows to the second hydraulic chamber 17 through the first pipeline 60 and is stored in the second hydraulic chamber 17.
  • part of the brake fluid in the second hydraulic chamber 17 flows to the second hydraulic chamber 17 through the first pipeline 60. And it is stored in the second hydraulic chamber 17, so that the pressure difference between the second hydraulic chamber 17 and the first hydraulic chamber 16 can be reduced, which is beneficial to reducing the power required by the driving device to push the piston.
  • an annular or semi-annular first diversion groove 13b is provided along the outer circumference of the push rod 13, and the first diversion groove 13b and the second hydraulic adjustment port The second end of 13a is in communication, and the first diversion groove 13b is in communication with the first hydraulic adjustment port 14a.
  • an annular or semi-annular second diversion groove 13c is provided along the inner periphery of the push rod support portion 14, and the second diversion groove 13c is connected to the first diversion groove 13c.
  • the hydraulic adjustment port 14a is in communication, and the second diversion groove 13c is in communication with the second end of the second hydraulic adjustment port 13a.
  • the second hydraulic pressure adjustment port 13a is obliquely arranged on the push rod 13 and penetrates the push rod 13, and the first end of the second hydraulic pressure adjustment port 13a and the piston The distance between 12 is shorter than the distance between the second end of the second hydraulic adjustment port 13a and the piston 12.
  • the connected first The two hydraulic pressure adjustment ports 13a and the first hydraulic pressure adjustment port 14a may communicate with the first hydraulic chamber 16.
  • a control method of a brake system includes: a hydraulic adjustment device 10, the hydraulic adjustment device 10 includes a hydraulic cylinder 11, a piston 12, and a push rod 13, wherein the piston 12
  • the hydraulic cylinder 11 is divided into a first hydraulic chamber 16 and a second hydraulic chamber 17; a driving device 15 for driving the push rod 13 to push the piston 12 along the inner wall of the hydraulic cylinder 11 in the hydraulic adjusting device 10 Move and form a piston stroke;
  • the end of the first hydraulic chamber 16 is provided with a push rod support portion 14, the push rod support portion 14 is used to support the push rod 13, and the push rod support portion 14 is provided
  • There is a first hydraulic adjustment port 14a the first hydraulic adjustment port 14a is connected with the first outlet pipe 180 of the brake system;
  • the push rod 13 is provided with a second hydraulic adjustment port 13a, the first The first end of the second hydraulic adjustment port 13a is in communication with the first hydraulic chamber 16; when the piston 12 is at the inner dead center of the piston stroke, the first hydraulic adjustment port 14a and the second
  • the liquid outlet pipeline of the first hydraulic chamber 16 is arranged in sections on the push rod support portion 14 corresponding to the first hydraulic adjustment port 14a and the push rod 13 corresponds to the second hydraulic adjustment port 13a. In this way, when the piston 12 is at the inner dead center of the piston stroke, the first hydraulic pressure adjustment port 14a communicates with the second end of the second hydraulic pressure adjustment port 13a.
  • the adjustment port 14a is not connected to the second end of the second hydraulic adjustment port 13a, that is, the on-off state of the first hydraulic adjustment port 14a and the second hydraulic adjustment port 13a is controlled by the position of the piston 12 in the piston stroke, avoiding the traditional
  • the hydraulic adjustment device needs to be specially equipped with a control valve for the first hydraulic chamber 16 to control the on and off of the outlet pipe of the first hydraulic chamber 16, which is beneficial to reduce the number of control valves in the hydraulic adjustment unit and reduce the number of control valves in the hydraulic adjustment unit. the cost of.
  • the controller sends the control instruction to the driving device 15, and by controlling the driving device 15 to drive the push rod 13 to push the piston 12 along the hydraulic cylinder
  • the inner wall movement of 11 includes: in the process of decompressing the brake system, the controller sends the control instruction to the driving device 15 to drive the piston 12 by controlling the driving device 15 Move to the inner dead point.
  • the control piston 12 moves to the inner dead center of the piston stroke, and the first hydraulic pressure adjustment port 14a is connected with the second hydraulic pressure adjustment port 13a so that the brake fluid
  • the first hydraulic pressure chamber 16 can still be discharged through the connected first hydraulic pressure adjusting port 14a and the second hydraulic pressure adjusting port 13a, which is beneficial to improve the decompression performance of the brake system.
  • the controller sends the control instruction to the driving device 15, and by controlling the driving device 15 to drive the push rod 13 to push the piston 12 along the hydraulic cylinder
  • the inner wall movement of 11 includes: in the process of pressurizing the brake system, the controller sends the control instruction to the driving device 15 to drive the piston 12 by controlling the driving device 15
  • the volume of the second hydraulic chamber 17 is compressed to press the first part of the brake fluid in the second hydraulic chamber 17 into the brake system in the brake system through the first pipeline 60 in the brake system.
  • a moving wheel cylinder, the first pipeline 60 connects the second hydraulic chamber 17 with the brake wheel cylinder, and the first part of the brake fluid is part or all of the brake fluid in the second hydraulic chamber 17 .
  • control piston 12 compresses the volume of the second hydraulic chamber 17 to press the first part of the brake fluid in the second hydraulic chamber 17 into the brake system through the first pipeline 60 in the brake system.
  • the brake wheel cylinder realizes the positive pressurization process.
  • the piston 12 in the process of pressurizing the brake system, the piston 12 is located at a position other than the inner dead center in the stroke of the piston, and the first hydraulic pressure adjustment The port 14a is not in communication with the second end of the second hydraulic adjustment port 13a.
  • the first hydraulic pressure regulating port 14a in the process of pressurizing the brake system, is not connected to the second end of the second hydraulic pressure regulating port 13a. At this time, the first hydraulic pressure chamber 16 can be used for storing Brake fluid.
  • the second hydraulic chamber 17 also includes a second part of brake fluid
  • the The controller sends the control instruction to the driving device 15, and by controlling the driving device 15 to drive the push rod 13 to push the piston 12 to move along the inner wall of the hydraulic cylinder 11, including:
  • the controller sends the control instruction to the driving device 15, and by controlling the driving device 15 to drive the push rod 13 to push the piston 12 to compress the second
  • the volume of the hydraulic chamber 17 is used to press the second part of the brake fluid into the first hydraulic chamber 16 through the third brake pipeline 130 and be stored in the first hydraulic chamber 16, and the third The brake pipeline 130 communicates with the first hydraulic chamber 16 and the second hydraulic chamber 17.
  • the second part of the brake fluid in the second hydraulic chamber 17 can flow into the first hydraulic chamber 16 through the third brake pipeline 130, so as to reduce the first hydraulic chamber 16 and the second hydraulic chamber 16
  • the pressure difference in 17 helps reduce the power required by the driving device to drive the piston.
  • the controller sends the control instruction to the driving device 15, and by controlling the driving device 15 to drive the push rod 13 to push the piston 12 along the hydraulic cylinder
  • the inner wall movement of 11 includes: in the process of pressurizing the brake system, the controller sends the control instruction to the driving device 15 to drive the push rod by controlling the driving device 15 13 Push the piston 12 to compress the volume of the first hydraulic chamber 16 to press the second part of the brake fluid into the wheel brake cylinders of the brake system through the third brake pipeline 130
  • the third brake pipeline is used to connect the first hydraulic chamber 16 and the brake wheel cylinder.
  • an automobile including the brake system according to any one of the possible implementation manners of the third aspect, wherein the hydraulic pressure adjusting unit adjusts the brake in the brake pipeline of the brake system. Hydraulic pressure to control the amount of braking force applied to the brake wheel cylinders in the brake system.
  • a control device in a sixth aspect, includes a processing unit and a storage unit, wherein the storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit, so that the control device executes any of the fourth aspects Possible method.
  • control device may be an independent controller in the automobile, or may be a chip with a control function in the automobile.
  • the foregoing processing unit may be a processor
  • the foregoing storage unit may be a memory, where the memory may be a storage unit in a chip (for example, a register, a cache, etc.), or a storage unit (for example, a read-only Memory, random access memory, etc.).
  • the memory and the processor are coupled in the above-mentioned controller.
  • the memory is coupled to the processor, it can be understood that the memory is located inside the processor, or the memory is located outside the processor, thereby being independent of the processor.
  • a computer program product includes: computer program code, which when the computer program code runs on a computer, causes the computer to execute the methods in the above aspects.
  • the above-mentioned computer program code may be stored in whole or in part on a first storage medium, where the first storage medium may be packaged with the processor, or may be packaged separately with the processor. Specific restrictions.
  • a computer-readable medium stores program code, which when the computer program code runs on a computer, causes the computer to execute the methods in the foregoing aspects.
  • Fig. 1 is a schematic structural diagram of a conventional hydraulic adjusting device with a two-way pressure-increasing/pressure-reducing function.
  • Fig. 2 is a schematic structural diagram of a hydraulic adjusting device according to an embodiment of the present application.
  • Fig. 3 is a schematic structural diagram of a first diversion groove in an embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of a second diversion groove in an embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of a hydraulic adjustment unit according to an embodiment of the present application.
  • Fig. 6 is a schematic diagram of a braking system according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of the working state of the brake system 200 in the forward pressure-increasing mode of the embodiment of the present application.
  • Figure 8(a) is a schematic diagram of the force analysis of the piston in the forward pressurization mode of the conventional hydraulic regulator.
  • Fig. 8(b) is a schematic diagram of the force analysis of the piston in the positive pressure-increasing mode of the hydraulic adjusting device according to the embodiment of the application.
  • FIG. 9 is a schematic diagram of the working state of the braking system 200 in the reverse boost mode according to the embodiment of the application.
  • Fig. 10 is a comparison diagram of pressure changes between the hydraulic adjustment device of the embodiment of the present application and the conventional hydraulic adjustment device during the pressurization process.
  • FIG. 11 is a schematic diagram of the working state of the braking system 200 in the conventional decompression mode according to the embodiment of the present application.
  • FIG. 12 is a schematic diagram of the working state of the braking system 200 in the rapid decompression mode according to the embodiment of the present application.
  • FIG. 13 is a comparison diagram of pressure changes of the hydraulic adjusting device of the embodiment of the present application and the conventional hydraulic adjusting device during the decompression process.
  • Fig. 14 is a schematic diagram of a dual-circuit hydraulic adjustment unit according to an application embodiment.
  • Fig. 15 is a schematic diagram of a dual-circuit hydraulic adjustment unit according to another embodiment of the application.
  • Fig. 16 is a schematic diagram of a dual-circuit hydraulic adjustment unit according to another embodiment of the application.
  • FIG. 17 is a schematic diagram of the first connection mode of the liquid storage device and the hydraulic adjusting device 10 in the embodiment of the present application.
  • FIG. 18 is a schematic diagram of the second connection mode of the liquid storage device and the hydraulic adjusting device 10 in the embodiment of the present application.
  • Fig. 19 is a schematic diagram of a hydraulic adjustment unit according to an embodiment of the present application.
  • Fig. 20 is a schematic diagram of a hydraulic adjustment unit according to another embodiment of the present application.
  • Fig. 21 is a schematic diagram of a hydraulic adjustment unit according to another embodiment of the present application.
  • Fig. 22 is a flowchart of a control method according to an embodiment of the present application.
  • FIG. 23 is a flowchart of a control method according to another embodiment of the present application.
  • Fig. 24 is a schematic diagram of a control device according to an embodiment of the present application.
  • FIG. 25 is a schematic block diagram of a controller according to another embodiment of the present application.
  • Fig. 1 is a schematic structural diagram of a conventional hydraulic adjusting device with a two-way pressure-increasing/pressure-reducing function.
  • the hydraulic adjusting device shown in Figure 1 includes a driving device 15, a brake line 20, a liquid storage device 30, a hydraulic cylinder 11, a piston 12, a push rod 13, a first hydraulic chamber 16, a second hydraulic chamber 17, and a first control
  • the driving device 15 is used to drive the push rod 13 to push the piston 12 to move along the inner wall of the hydraulic cylinder 11.
  • the hydraulic cylinder 11 is divided by the piston 12 into two hydraulic chambers, a first hydraulic chamber 16 and a second hydraulic chamber 17.
  • the first flow channel connected to the first hydraulic chamber 16 is composed of a port 11a and a port 11d.
  • the second flow path connected to the second hydraulic chamber 17 is composed of a port 11c and a port 11b.
  • the first control valve 110 and the second control valve 120 are in a disconnected state, and the brake fluid in the liquid storage device 30 flows through the pipeline where the two one-way valves are located to the second control valve.
  • the piston 12 is driven by the driving device 15 to move from right to left along the inner wall of the hydraulic cylinder 11 to press the brake fluid in the second hydraulic chamber 17 into the brake pipeline 20 through the port 11b of the second flow channel.
  • the piston 12 moves from left to right along the inner wall of the hydraulic cylinder 11 to press the brake fluid in the first hydraulic chamber 16 into the brake pipeline 20 through the port 11 a of the first flow channel.
  • the first control valve 110 and the second control valve 120 are in a conducting state, and the pipelines where the two one-way valves are located block the brake fluid from the hydraulic cylinder due to the presence of the one-way valves. 11 flows to the liquid storage device 30.
  • the piston 12 is driven by the driving device 15 to move from right to left along the inner wall of the hydraulic cylinder 11 to draw the brake fluid in the brake pipe 20 into the second hydraulic chamber 17 through the port 11b of the second flow path.
  • the liquid storage device 30 is drawn from the second hydraulic chamber 17 through the pipeline where the second control valve 120 is located.
  • the piston 12 is driven by the driving device 15 to move from left to right along the inner wall of the hydraulic cylinder 11 to draw the brake fluid in the brake pipe 20 into the first hydraulic chamber 16 through the port 11a of the first flow channel.
  • the liquid storage device 30 is drawn from the first hydraulic chamber 16 through the pipeline where the first control valve 110 is located.
  • the embodiment of the present application provides a new hydraulic adjustment device, that is, the above-mentioned first flow passage is arranged on the push rod 13 and the push rod support portion 14, when the push rod 13 is relative to the push rod support portion 14 During movement, the two sections of the first flow channel will be staggered so that the first flow channel is in a disconnected state. When the push rod 13 is at the inner dead point relative to the push rod support portion 14, the two sections of the first flow channel are connected, so that the first flow channel is connected. The first channel is in a conducting state. That is to say, the conduction or disconnection of the first flow path is realized by the position of the push rod 13 relative to the push rod support portion 14.
  • Valve 110 it is no longer necessary to configure the first flow path for the first control in the hydraulic adjustment device provided in the present application. ⁇ 110 ⁇ Valve 110. That is, it is beneficial to reduce the number of control valves in the braking system and reduce the cost of the braking system.
  • the forward movement of the piston 12 may be referred to as forward movement
  • the backward movement of the piston 12 may be referred to as reverse movement.
  • the pressurization moving in the forward direction may be called forward pressurization
  • the pressurization moving in the reverse direction may be called reverse pressurization.
  • the forward pressurization and the reverse pressurization will be further introduced.
  • the hydraulic adjusting device 10 shown in FIG. 2 includes a hydraulic cylinder 11, a piston 12, a push rod 13 and a push rod support part 14.
  • the push rod 13 is used to push the piston 12 to move along the inner wall of the hydraulic cylinder 11 to form a piston stroke.
  • the piston 12 separates the hydraulic cylinder 11 into a first hydraulic chamber 16 and a second hydraulic chamber 17; the end of the first hydraulic chamber 16 A push rod support 14 is provided.
  • the push rod support 14 is used to support the push rod 13, and the push rod support 14 is provided with a first hydraulic adjustment port 14a; the push rod 13 is provided with a second hydraulic adjustment port 13a.
  • the first end of the two hydraulic adjustment ports 13a is in communication with the first hydraulic chamber 16.
  • the first hydraulic adjustment port 14a is in communication with the second end of the second hydraulic adjustment port 13a.
  • the second end of the first hydraulic adjustment port 14a and the second hydraulic adjustment port 13a are not connected.
  • the piston 12 is movably arranged in the hydraulic cylinder 11, one end of the push rod 13 extends into the hydraulic cylinder 11 and is connected to the piston 12, and the other end of the push rod 13 penetrates the hydraulic cylinder 11 and is connected to the driving device 15 in transmission. Driven by the driving device 15, the piston 12 can reciprocate in the hydraulic cylinder 11 to realize the pressure increase or pressure reduction (decompression) operation of the brake system.
  • the farthest position of the piston 12 from the drive shaft (for example, the center of the crankshaft) of the driving device 15 is called the "outer dead point”. Accordingly, the piston 12 is farthest from the driving device.
  • the most advanced position of the drive shaft (for example, the center of the crankshaft) of 15 is called the “inner dead center”, and the distance between the "outer dead center” and the “inner dead center” is called the piston stroke.
  • the first hydraulic chamber 16 and the second hydraulic chamber 17 are separated by the piston 12 and are configured such that the volume thereof changes with the movement of the piston 12. Specifically, when the piston 12 moves forward (to the left in FIG. 1), the volume of the first hydraulic chamber 16 is increased, and the volume of the second hydraulic chamber 17 is reduced. When the piston 12 moves backward (to the right in FIG. 1), the volume of the first hydraulic chamber 16 is reduced, and the volume of the second hydraulic chamber 17 is increased.
  • the end of the first hydraulic chamber 16 is provided with a push rod support portion 14, the push rod support portion 14 is used to support the push rod 13, and the push rod support portion 14 is provided with a first hydraulic adjustment port 14 a.
  • the push rod support portion 14 and the hydraulic cylinder 11 may be integrally formed, or the push rod support portion 14 and the hydraulic cylinder 11 may also be assembled later, which is not limited in the embodiment of the present application.
  • a sealing member (not shown in the figure) is further provided on the push rod support portion 14, so as to prevent the brake fluid from flowing out of the first hydraulic chamber 16 through the gap between the push rod 13 and the push rod support portion.
  • the push rod 13 is provided with a second hydraulic pressure adjusting port 13a, and the first end of the second hydraulic pressure adjusting port 13a is in communication with the first hydraulic chamber 16.
  • the first hydraulic chamber 16 communicates with the second hydraulic adjustment port 13a through the first hydraulic adjustment port 14a.
  • the first hydraulic pressure adjustment port 14a and the second hydraulic pressure adjustment port 13a are not connected.
  • the above-mentioned first hydraulic pressure chamber 16 communicates with the second hydraulic pressure adjustment port 13a through the first hydraulic pressure adjustment port 14a.
  • the first hydraulic pressure chamber 16 is discharged from the port 13a, or the brake fluid can enter the first hydraulic chamber 16 through the first hydraulic pressure adjusting port 14a and the second hydraulic pressure adjusting port 13a that are connected.
  • first hydraulic pressure adjustment port 14a and the second hydraulic pressure adjustment port 13a can be regarded as ports of the first flow passage communicating with the first hydraulic chamber 16 as described above.
  • the outlet pipe of the first hydraulic chamber 16 is arranged in sections on the push rod support portion 14 (corresponding to the first hydraulic adjustment port 14a) and the push rod 13 (corresponding to the second hydraulic adjustment port 13a) In this way, when the piston 12 is at the inner dead center of the piston stroke, the first hydraulic pressure adjustment port 14a is in communication with the second hydraulic pressure adjustment port 13a, and the brake fluid in the first hydraulic chamber 16 can pass through the connected first hydraulic pressure adjustment port 14a. And the second hydraulic adjustment port 13a discharges the first hydraulic chamber 16, which is beneficial to reduce the number of control valves in the hydraulic adjustment unit and reduce the cost in the hydraulic adjustment unit.
  • the brake fluid in the above-mentioned first hydraulic chamber 16 may flow in through a third hydraulic pressure adjustment port 11a provided on the first hydraulic chamber.
  • the third hydraulic adjustment port 11a communicates with the first hydraulic chamber 16 and the brake pipeline of the brake system.
  • the brake pipeline can be connected to the wheel brake cylinders of the automobile wheels.
  • the controller of the brake system can adjust the brake The hydraulic pressure in the pipeline adjusts the braking force applied to the wheels.
  • the first hydraulic chamber 16 can flow the brake hydraulic pressure into the brake pipeline through the third hydraulic pressure adjustment port 11a, thereby increasing the braking force applied to the wheels.
  • the brake fluid in the brake line can flow into the first hydraulic chamber 16 through the third hydraulic pressure adjustment port 11a, thereby reducing or eliminating the application to the wheels. Braking force.
  • the hydraulic cylinder 11 may also be provided with a fourth hydraulic adjustment port 11b, which is used to communicate the second hydraulic chamber 17 with the brake pipeline of the brake system through a pipeline.
  • the second hydraulic chamber 17 can discharge brake fluid into the brake line through the fourth hydraulic pressure adjustment port 11b, and pressurize the brake line, thereby increasing the braking force applied to the wheels.
  • the brake fluid in the brake line can also be discharged into the second hydraulic chamber 17 through the fourth hydraulic pressure adjustment port 11b, and the brake line is decompressed, so as to reduce or cancel the brake applied to the wheels. power.
  • the fourth hydraulic pressure adjustment port 11b can also communicate with the second hydraulic chamber 17 and the first hydraulic chamber 16 through a brake pipeline.
  • the hydraulic cylinder 11 may also be provided with a fifth hydraulic pressure adjusting port 11c, and the fifth hydraulic pressure adjusting port 11c is used to drain the brake fluid supplemented by the liquid storage device 30.
  • the fifth hydraulic adjustment port 11c is connected to the liquid storage device 30 through a pipeline.
  • the piston 12 is moved to the right During the movement, the brake fluid in the liquid storage device 30 can be promptly replenished into the second hydraulic chamber 17 through the fifth hydraulic adjustment port 11c.
  • the hydraulic adjusting device 10 provided by the embodiment of the present application can realize two-way pressurization by moving forward or backward, ensuring the continuity of the pressurization process, and improving the comfort during braking.
  • the hydraulic adjusting device 10 of the embodiment of the present application can quickly generate pressure, realize rapid pressure build-up of the brake system, reduce the control response time of the system, and meet the control and safety requirements of the vehicle.
  • the second hydraulic adjustment port 13a may be inclined on the push rod 13 and penetrate the push rod 13.
  • the liquid inlet of the second hydraulic adjustment port 13a The distance between the first end (also called the first end) and the piston 12 is shorter than the distance between the liquid outlet (also called the second end) of the second hydraulic pressure regulating port 13a and the piston 12.
  • the distance between the liquid inlet of the second hydraulic adjustment port 13a and the piston 12 is shorter than the distance between the liquid outlet of the second hydraulic adjustment port 13a and the piston 12. It can be understood that the second hydraulic adjustment port 13a and the second hydraulic adjustment port 13a The side where a hydraulic adjustment port 14a communicates is closer to the piston 12 than the side where the second hydraulic adjustment port 13a communicates with the first hydraulic chamber 16.
  • the second hydraulic adjustment port 13a may also be a U-shaped hole, etc., which is not limited in this application.
  • the push rod support 14 may be spaced apart from the second hydraulic adjustment port 13a, or in other words, the piston 12 is located at the inner stop. At this point, there may be a certain interval between the push rod support portion 14 and the second hydraulic adjustment port 13a, so that the brake fluid in the first hydraulic chamber 16 can enter and exit the second hydraulic adjustment port 13a without being blocked.
  • the push rod supporting portion 14 can also block a part of the second hydraulic adjustment port 13a. The embodiment of the application does not limit this.
  • the push rod 13 may rotate after a long time of work.
  • the second hydraulic adjustment port 13a provided on the push rod 13 will also rotate.
  • the outlet of the second hydraulic adjustment port 13 a after the rotation may be blocked by the inner wall of the push rod support 14, and correspondingly, the first hydraulic adjustment port 14 a is blocked by the outer wall of the push rod 13.
  • a first diversion groove 13b can be provided along the outer circumference of the push rod 13.
  • the first diversion groove 13b is connected to the second hydraulic adjustment port 13a. , To ensure that the second hydraulic adjustment port 13a and the first hydraulic adjustment port 14a maintain communication.
  • the first diversion groove 13b may be annular or semi-annular along the outer circumference of the push rod 13.
  • the first diversion groove 13b is a semicircular annular groove arranged along the outer circumference of the push rod 13, it is beneficial to reduce the influence of the first diversion groove 13b on the mechanical strength of the push rod 13. It should be understood that the arc length of the aforementioned semicircular ring may be determined according to the maximum amount of rotation that the push rod 13 can generate.
  • FIG. 3 is a schematic structural diagram of a first diversion groove in an embodiment of the present application.
  • FIG. 3(b) is a front view of the push rod 13
  • FIG. 3(a) is a cross-sectional view of the AA perspective in FIG. 3(b).
  • a first diversion groove 13b can be opened along the outer circumference of the push rod 13.
  • the diversion groove is arranged along the circumference of the push rod 13, and the second hydraulic adjustment port 13a communicates with the first diversion groove 13b, so that when the piston 12 When being moved to the inner dead center, the second hydraulic pressure regulating port 13a will be connected to the first hydraulic pressure regulating port 14a through the first diversion groove 13b, so that rapid pressure reduction can be achieved.
  • the first diversion groove 13b is arranged along the outer circumference of the push rod 13 and has a certain length, when the push rod 13 rotates, the first diversion groove 13b will always be in communication with the first hydraulic adjustment port 14a,
  • the second hydraulic adjustment port 13a is also connected to the first diversion groove 13b, that is, at this time, it can still be ensured that the second hydraulic adjustment port 13a and the first hydraulic adjustment port 14a are connected to each other.
  • the first diversion groove 13b is an annular groove connected end to end. In this way, no matter how large the angle of rotation of the push rod 13 occurs, it will ensure that the first diversion groove 13b and the first hydraulic adjustment port 14a are always in communication with each other, and the first diversion groove 13b and the second hydraulic adjustment port 13a are also always maintained with each other. In this way, the second hydraulic pressure adjustment port 13a and the first hydraulic pressure adjustment port 14a always maintain mutual conduction.
  • annular or semi-annular second diversion groove 13c is provided along the inner circumference of the push rod support portion 14, and the second diversion groove 13c is in communication with the first hydraulic adjustment port 14a.
  • the structure of the second diversion groove 13c of the embodiment of the present application is described below in conjunction with FIG. 4.
  • Fig. 4 is a schematic structural diagram of a second diversion groove in an embodiment of the present application.
  • the second diversion groove 13c may be provided on the inner wall of the push rod support portion 14, and the second diversion groove 13b is in communication with the first hydraulic adjustment port 14a.
  • the second diversion groove 13c can be arranged along the inner circumference of the push rod support part 14. Since the inner circumference of the push rod support part 14 always covers the outer circumference of the push rod 13, in this way, even if the push rod 13 rotates, it is located on the push rod support The second diversion groove 13c on the inner periphery of the portion 14 can also communicate with the second hydraulic adjustment port 13a, that is, the second hydraulic adjustment port 13a is in communication with the first hydraulic adjustment port 14a.
  • arranging the second diversion groove 13c on the push rod supporting portion 14 is beneficial to reduce the impact on the mechanical strength of the push rod 13 and prevent the push rod 13 from breaking after a long time operation.
  • FIG. 5 takes the hydraulic adjusting device 10 as an example for introduction.
  • the hydraulic adjusting device shown in FIG. 4 is installed in the hydraulic adjusting unit, the arrangement of the pipelines thereof is the same as the arrangement of pipelines shown in FIG. 5.
  • I will not repeat them separately below.
  • Fig. 5 is a schematic structural diagram of a hydraulic adjustment unit according to an embodiment of the present application.
  • the hydraulic adjusting unit 100 includes a hydraulic adjusting device 10, a brake pipe 20, a liquid storage device 30, a first liquid outlet pipe 180 and a driving device 15.
  • the hydraulic adjusting device 10 includes a hydraulic cylinder 11, a piston 12, and a push rod 13, wherein the piston 12 separates the hydraulic cylinder 11 into a first hydraulic chamber 16 and a second hydraulic chamber 17;
  • the driving device 15 is used for driving the push rod 13 to push the piston 12 to move along the inner wall of the hydraulic cylinder 11 in the hydraulic adjusting device 10 to form a piston stroke.
  • the above-mentioned driving device 15 may be other devices with driving capability such as a motor. It should be understood that when the above-mentioned driving device 15 is a motor, since part of the motor outputs torque, in order to convert the torque output by the motor into a linear motion that drives the push rod 13, there is a gap between the driving device 15 and the push rod 13. It can be connected by a speed reduction mechanism or other power conversion mechanism 18.
  • the above-mentioned power replacement mechanism may include, for example, a worm gear assembly or a ball screw nut assembly.
  • the end of the first hydraulic chamber 16 is provided with a push rod support portion 14, which is used to support the push rod 13, and the push rod support portion 14 is provided with a first hydraulic adjustment port 14a, the first hydraulic adjustment port 14a It is connected to the first liquid outlet pipe 180 of the brake system.
  • the push rod 13 is provided with a second hydraulic adjustment port 13a.
  • the first hydraulic adjustment port 14a is connected to the second hydraulic adjustment port 13a, and the brake fluid in the brake system can pass through
  • the connected first hydraulic pressure regulating port 14a and the second hydraulic pressure regulating port 13a flow between the first hydraulic chamber 16 and the first liquid outlet pipe 180.
  • the first hydraulic pressure adjustment port 14a is connected to the liquid storage device 30 through the first liquid outlet pipe 180, so that the brake fluid can pass through the connected first hydraulic pressure adjustment port 14a and the second hydraulic pressure adjustment port 13a from The liquid storage device 30 flows to the first hydraulic pressure chamber 16, or the brake fluid may flow from the first hydraulic pressure chamber 16 to the liquid storage device 30 through the connected first hydraulic pressure adjustment port 14 a and the second hydraulic pressure adjustment port 13 a.
  • the hydraulic adjustment unit 100 further includes a first pipeline 60, an oil inlet pipeline 170, a pipeline switching element 61, a one-way valve 171, and a third brake pipeline 130.
  • the fourth hydraulic adjustment port 11b on the hydraulic cylinder 11 is connected to the third brake pipe 130 through the first pipe 60, and one end of the third brake pipe 130 is connected to the third brake pipe in the first hydraulic chamber 16.
  • the hydraulic pressure regulating port 11a is connected, and the other end of the third brake pipe 130 is connected with the brake circuit 20.
  • the fourth hydraulic pressure adjustment port 11b on the hydraulic cylinder 11 can communicate with the second hydraulic chamber 17 and the brake pipeline 20 through the first pipeline 60 and the third brake pipeline 130.
  • the second hydraulic chamber 17 is in communication with the brake pipe 20 through the first pipe 60 and the third brake pipe 130.
  • the fourth hydraulic adjustment port 11b on the hydraulic cylinder 11 is also connected to the second hydraulic chamber 17 and the first hydraulic chamber 16 through the first pipeline 60 and another part of the third brake pipeline 130.
  • the second hydraulic chamber 17 is communicated with the first hydraulic chamber 16 through the first pipeline 60 and the third brake pipeline 130. Therefore, when the positive pressure is applied, a part of the brake fluid can flow to the brake pipe 20 to provide braking force to the wheels, and the other part of the brake fluid can be supplemented into the first hydraulic chamber 16, thereby reducing the first hydraulic pressure.
  • the pressure difference between the two hydraulic chambers 17 and the first hydraulic chamber 16 reduces the working load of the driving device 15 and increases the service life of the driving device 15.
  • the braking system may further include a pipeline switching element 61, which may be disposed on the first pipeline 60, and the pipeline switching element 61 can control the on-off of the first pipeline 60.
  • the pipeline switch element 61 When the pipeline switch element 61 is in a conducting state, the first pipeline 60 is connected. When the pipeline switching element 61 is in the disconnected state, the first pipeline 60 is disconnected.
  • the above-mentioned pipeline switching element 61 may be various types of valves, such as solenoid valves, one-way valves, and the like.
  • the solenoid valve may be a two-way valve, a three-way valve, etc., which is not limited in this application.
  • the pipeline switching element 61 may be provided as a normally open solenoid valve configured to be opened in a normal state and operated to be closed when receiving a closing signal from the controller. In other words, the default initial state of the pipeline switching element 61 is the open state.
  • the fifth hydraulic adjustment port 11c on the hydraulic cylinder 11 communicates with the second hydraulic chamber 17 and the liquid storage device 30 through the oil inlet pipe 170, so that the brake fluid in the liquid storage device 30 can be discharged into the second hydraulic pressure adjustment port 11c through the fifth hydraulic adjustment port 11c.
  • the liquid storage device 30 can replenish the brake fluid to the second hydraulic chamber 17 through the oil inlet pipe 170.
  • a one-way valve 171 is provided on the oil inlet pipe 1 170, and the one-way valve 171 is configured to allow the brake fluid to flow in the direction from the fluid storage device 30 to the second hydraulic chamber 17, while preventing the brake fluid Flow in the opposite direction.
  • the hydraulic adjustment unit 100 of the embodiment of the present application has multiple working modes such as forward pressure increase, reverse pressure increase, normal pressure reduction, and rapid pressure reduction.
  • the controller can control the pipe switch element 61 to open and control the piston 12 to move forward to squeeze
  • the brake fluid in the second hydraulic chamber 17 is pressed, and a part of the brake fluid in the second hydraulic chamber 17 passes through the fourth hydraulic pressure adjustment port 11b, the first pipe 60 (pipe switch element 61), and the third brake pipe
  • the passage 130 is then discharged into the brake pipe 20, so that the pressure of the brake fluid in the brake pipe 20 can be increased, thereby increasing the braking force applied to the wheels.
  • the controller can control the pipeline switch element 61 to close, and control the piston 12 to move in the reverse direction to squeeze the brake fluid in the first hydraulic chamber 16.
  • the brake fluid in a hydraulic pressure chamber 16 passes through the third hydraulic pressure adjustment port 11a and the third brake pipe 130 and then is discharged into the brake pipe 20, thereby increasing the pressure of the brake fluid in the brake pipe 20 , Thereby increasing the braking force exerted on the wheels.
  • the brake fluid in the liquid storage device 30 will be replenished into the second hydraulic chamber 17 through the oil inlet pipe 170 (the one-way valve 171) and the fifth hydraulic adjustment port 11c.
  • the controller can control the pipe switch element 61 to open, and control the piston 12 to move in the reverse direction.
  • the brake fluid in the moving pipeline 20 will enter the second hydraulic chamber 17 through the third brake pipeline 130, the first pipeline 60 (the pipeline switching element 61), and the fourth hydraulic pressure regulating port 11b in sequence.
  • the brake fluid in the first hydraulic chamber 16 will also sequentially pass through the third hydraulic pressure adjustment port 11a, the third brake pipeline 130, the first pipeline 60 (the pipeline switch element 61), and the fourth hydraulic pressure adjustment port. 11b enters into the second hydraulic chamber 17.
  • the controller can control the piston 12 to move to the inner dead center, and the second pressure-reducing hole 13a and the first pressure-reducing hole 14a will be connected.
  • the brake The brake fluid in the pipeline 20 will sequentially pass through the third brake pipeline 130, the third hydraulic pressure regulating port 11a, the first hydraulic chamber 16, the second pressure reducing hole 13a, the diversion groove 13b, and the first pressure reducing hole 14a.
  • the pressure of the brake fluid in the brake pipe 20 can be reduced, thereby reducing or canceling the braking force applied to the wheels.
  • the pipeline switch element 61 can be opened or closed, which is not limited in this application.
  • Fig. 6 is a schematic diagram of a braking system provided by an embodiment of the present application.
  • the brake system 200 includes wheel brake cylinders 15 for the wheels of an automobile, and a hydraulic pressure adjusting unit 100.
  • the brake pipeline 20 of the hydraulic adjustment unit 100 is connected with the wheel brake cylinder 15 to provide braking force to the wheels 311 and 312 of the automobile through the wheel brake cylinder 15.
  • the above-mentioned brake pipeline may be a brake pipeline in a dual-circuit brake system, or a brake pipeline in a distributed brake system, which is not specifically limited in the embodiment of the present application.
  • the brake line 20 may be connected with the wheel brake cylinder 15 of the first set of wheels 310 of the automobile to provide braking force to the first set of wheels 310.
  • the first set of wheels includes a first wheel 311 and a second wheel 312.
  • the brake pipeline 20 includes a first branch 21 and a second branch 22.
  • the first branch 21 is connected to the wheel brake cylinder 15 of the first wheel 311, and the second branch 2 is connected to the second wheel 312.
  • the brake wheel cylinder 15 is connected.
  • first branch 21 and the second branch 22 are respectively provided with an inlet valve (not shown in the figure) that controls the on and off of the pipeline, so that the control can be achieved by controlling the opening and closing of the inlet valve. Braking control of a single wheel.
  • first wheel 311 and the second wheel 312 may be a right front wheel and a left front wheel, respectively.
  • first wheel 311 and the second wheel 312 may be a right rear wheel and a left rear wheel, respectively.
  • first wheel 311 and the second wheel 312 may be a right front wheel and a left rear wheel, respectively, or the first wheel 311 and the second wheel 312 may be a right rear wheel and a left front wheel, respectively.
  • the brake pipeline 20 can also be connected to the brake wheel cylinders of the second set of wheels (not shown in the figure) of the automobile to provide braking force to the second set of wheels.
  • the braking system 200 may also include a controller (not shown in the figure).
  • the controller is used to receive the measurement information of the various sensors in the braking system 200, and based on the measurement information, to control the driving device 15 and the pipeline switch elements in the system. 61 and other electronic control components to control.
  • the brake system 200 of the embodiment of the present application has multiple working modes such as forward pressure increase, reverse pressure increase, normal pressure reduction, rapid pressure reduction, etc.
  • the multiple working modes are described below with reference to the accompanying drawings.
  • FIG. 7 is a schematic diagram of the working state of the brake system 200 in the forward pressure-increasing mode of the embodiment of the present application.
  • the controller controls the driving device 15 to be energized, and the rotary motion of the driving device 15 is converted into linear motion through the power assembly and replacement mechanism 18, and the push rod 13 is pushed to move to the left.
  • the second pressure relief hole 13a and the first pressure relief hole 14a Are disconnected from time to time.
  • the controller controls the pipeline switch element 61 to open, so that the first pipeline 60 is connected, and the piston 12 moves to the left under the leftward thrust of the push rod 13, pushing the brake fluid in the second hydraulic chamber 17 into the first pipeline Road 60.
  • the volume change ⁇ V1 of the second hydraulic chamber 17 is greater than the volume change ⁇ V2 of the first hydraulic chamber 16, and the difference between the two is the product of the surface area of the push rod 13 and the stroke of the push rod. This ensures that part of the brake fluid can enter the first hydraulic chamber 16 through the first pipeline 60 during the movement of the piston 12 to the left, reducing the pressure difference between the two sides, reducing the working power of the driving device 15, and the other part of the brake fluid. It enters the brake pipe 20 through the third brake pipe 130 to realize the pressure increase function.
  • a part of the brake fluid in the second hydraulic chamber 17 will pass through the fourth hydraulic pressure adjustment port 11b, the first pipeline 60 (the pipeline switch element 61), the third brake pipeline 130, and the third hydraulic pressure adjustment port. 11a is added to the first hydraulic chamber 16.
  • Another part of the brake fluid passes through the fourth hydraulic pressure adjustment port 11b, the first pipe 60 (pipe switch element 61), and the third brake pipe 130, and then is discharged into the brake pipe 20, and then passes through the first branch. 21 and the second branch 22 enter the wheel brake cylinder 15 to increase the pressure of the brake fluid in the wheel brake cylinder 15 and thereby increase the braking force applied to the first set of wheels 310.
  • FIG. 8 is a comparison diagram of the force analysis of the piston under the positive pressurization mode of the hydraulic adjusting device according to the embodiment of the present application and the conventional hydraulic adjusting device.
  • Fig. 8(a) is a schematic diagram of the force analysis of the piston in the forward pressurization mode of the conventional hydraulic adjustment device
  • Fig. 8(b) is the force analysis of the piston in the forward pressurization mode of the hydraulic adjustment device of the application embodiment. Schematic diagram of force analysis.
  • the hydraulic adjusting device 10 performs positive pressure increase. Since the first hydraulic chamber 16 and the second hydraulic chamber 17 are connected, the pressure in the first hydraulic chamber 16 and the second hydraulic chamber 17 are the same. The pressure p1 in the first hydraulic chamber 16 is equal to the pressure p2 in the second hydraulic chamber 17.
  • the pressure on both sides of the piston 12 decreases when the piston 12 moves forward. Specifically, at this time, the force area on the left side of the piston 12 is s1, and the force area on the right side is s2 (s1>s2), and the pressures in the first hydraulic chamber 16 and the second hydraulic chamber 17 are both p1, so ,
  • the embodiment of the present application connects the first hydraulic chamber 16 and the second hydraulic chamber 17, so that the pressure in the first hydraulic chamber 16 and the second hydraulic chamber 17 are the same, which is compared with the prior art.
  • the one-way hydraulic adjustment device can reduce the thrust required for the positive movement of the piston 12, thereby reducing the working load of the driving device 15 and increasing the life of the motor. If a driving device with the same power is used as in the prior art, the hydraulic regulating device 10 provided by the present application will have a faster operating speed in the forward pressure-increasing mode, that is, the pressure building time will be shorter.
  • FIG. 9 is a schematic diagram of the working state of the braking system 200 in the reverse boost mode according to the embodiment of the application.
  • the controller of the braking system 200 determines that the wheel cylinder 15 of the first group of wheels 310 needs to be reversely pressurized
  • the controller controls the driving device 15 to be energized, and the power assembly mechanism 18 will
  • the rotary motion of the driving device 15 is converted into a linear motion, which drives the push rod 13 to move to the right, and the second pressure relief hole 13a and the first pressure relief hole 14a are still in a disconnected state.
  • the controller controls the pipeline switch element 61 to close, so that the first pipeline 60 is disconnected, and the piston 12 moves to the right under the drive of the push rod 13, pushing the brake fluid in the first hydraulic chamber 16 into the third brake pipeline 130.
  • the brake fluid in the first hydraulic chamber 16 passes through the third hydraulic pressure adjustment port 11a and the third brake pipe 130, and then is discharged into the brake pipe 20, and then passes through the first branch 21 and the second branch.
  • the passage 22 enters the wheel brake cylinder 15, so that the pressure of the brake fluid in the wheel brake cylinder 15 can be increased, thereby increasing the braking force applied to the first set of wheels 310.
  • the piston 12 is driven by the push rod 13 to move to the right.
  • the brake fluid in the liquid storage device 30 enters the second hydraulic chamber 17 through the oil return line 70 (check valve 171) and the fifth hydraulic adjustment port 11c to compensate for the The space formed by the movement of the piston 12 to the right.
  • the hydraulic pressure adjusting device 10 provided by the embodiment of the present application can realize continuous pressure increase. After the forward supercharging is completed, the reverse supercharging can be performed immediately; after the reverse supercharging is completed, the forward supercharging can also be performed immediately.
  • the controller may first control the hydraulic adjustment device 10 to perform positive pressure increase.
  • the controller controls the pipeline switch element 61 to open and controls the piston 12 to move to the left.
  • the positive pressure is increased.
  • the controller can continue to control the hydraulic adjustment device 10 to perform reverse pressure increase.
  • the controller can control the pipeline switch element 61 to close, and control the piston to move to the right until it moves to the inner dead center, and the reverse pressurization ends.
  • the controller can continue to control the hydraulic adjustment device 10 to perform positive pressure increase according to specific braking requirements, so as to achieve continuous cycle pressure increase.
  • Fig. 10 is a comparison diagram of pressure changes of the hydraulic adjusting device of the embodiment of the present application and the conventional hydraulic adjusting device during the pressurization process.
  • the ordinate represents the hydraulic pressure of the brake fluid in the brake pipe 20
  • the abscissa represents the pressure increase time.
  • the hydraulic pressure adjusting device 10 positively pressurizes the brake line 20 during the period 0-t1, so that the hydraulic pressure of the brake fluid in the brake line 20 changes from 0 to p1, and then In the time period t1-t4, the reverse boost is continued, so that the boost pressure in the brake pipeline 20 increases from p1 to p2.
  • the controller can control the hydraulic adjustment of the application according to specific braking requirements. The device continues to perform forward and reverse pressurization to achieve continuous cycle pressurization.
  • the piston 12 moves more slowly. During the period of 0-t3, positive pressure is performed, so that the boost pressure in the brake pipe 20 changes from 0 to p2, and p2 is greater than p1. Because the piston 12 of the conventional hydraulic adjusting device moves more slowly, it takes longer for the existing hydraulic adjusting device to change the boost pressure of the brake line 20 from 0 to p1, as shown in FIG. 10, until time t2. Only then can the boost pressure be changed to p1, and the time t2 is later than the time t1.
  • the brake pipe 20 When the existing hydraulic adjustment device needs to continue to pressurize the brake pipe 20, the brake pipe 20 must be pressure-maintained first to ensure that the piston 12 can be restored to the inner dead point for the next pressurization. operate. As shown in FIG. 10, the brake pipeline 20 is operated to maintain pressure during the period of t3-t5, and the next pressurizing operation can be performed only when the piston 12 returns to the inner dead center at time t5.
  • the pressure increase process of the hydraulic adjustment device 10 provided by the embodiment of the present application is more stable and continuous, with less fluctuation, and can improve the comfort during braking; and During pressurization, the pressurization rate is faster, and the overall pressurization rate is also faster.
  • the pressure in the road 20 drops from p2 to p1. At this time, the piston 12 has moved to the inner dead center position, and the brake pipeline 20 cannot be continued. Perform decompression operation.
  • the hydraulic adjusting device 10 provided by the embodiment of the present application can perform conventional decompression and rapid decompression.
  • the brake pipeline 20 is routinely decompressed, and the pressure in the brake pipeline 20 drops from p2 to p1.
  • the piston 12 has moved to the inner dead center position, and the brake can be immediately applied.
  • the pipeline 20 performs rapid decompression, that is, during the time period t2-t3, the brake pipeline 20 is quickly decompressed, and the pressure in the brake pipeline 20 drops from p1 to 0.
  • the traditional hydraulic adjusting device has a high initial decompression pressure
  • when the piston 12 is at the inner dead center it cannot continue to realize the rapid decompression function, that is, the pressure of the brake system is always maintained at p1.
  • the piston 12 when the piston 12 is at the inner dead center of the hydraulic adjusting device 10 provided by the present application, it can still continue to depressurize based on the pressure difference of the brake fluid in the brake system.
  • FIG. 11 is a schematic diagram of the working state of the braking system 200 in the conventional decompression mode according to the embodiment of the present application.
  • the controller of the braking system 200 determines that the brake wheel cylinder 15 of the first group of wheels 310 needs to be subjected to a regular decompression operation
  • the controller controls the driving device 15 to be energized and works through the power assembly and replacement mechanism 18.
  • the rotary motion of the driving device 15 is converted into a linear motion, and the push rod 13 is driven to move to the right, and the second decompression hole 13a and the first decompression hole 14a are still in a disconnected state.
  • the controller controls the pipeline switch element 61 to open, so that the first pipeline 60 is connected, the piston 12 moves to the right under the drive of the push rod 13, and the brake pipeline 20 and the brake fluid in the first hydraulic chamber 16 will pass through The first pipe 60 flows into the second hydraulic chamber 17.
  • the brake fluid in the wheel brake cylinder 15 will flow into the second hydraulic chamber 17 through the brake pipe 20, the first pipe 60, and the fourth hydraulic pressure adjustment port 11b in order to realize the correcting of the brake wheel cylinder. 15's conventional decompression operation.
  • the brake fluid in the first hydraulic pressure chamber 16 will also flow into the second hydraulic pressure chamber 17 through the third hydraulic pressure regulating port 11a, the third brake pipeline 130, the first pipeline 60, and the fourth hydraulic pressure regulating port 11b in sequence.
  • the hydraulic adjustment device 10 provided by the embodiment of the present application has two decompression modes: conventional decompression and rapid decompression, and the brake pipeline 20 can be quickly decompressed immediately after the conventional decompression is completed.
  • it is also possible to skip regular decompression and directly perform rapid decompression which is not limited in this application.
  • FIG. 12 is a schematic diagram of the working state of the braking system 200 in the rapid decompression mode according to the embodiment of the present application.
  • the brake pipe 20 can be quickly decompressed.
  • the piston 12 can be moved to the inner dead center position, the second decompression hole 13a and the first decompression
  • the holes 14a will be connected to each other, so that the first hydraulic chamber 16 and the liquid storage device 30 are also connected to each other.
  • the controller can control the pipeline switch element 61 to be in the initial state of power-off (either connected or disconnected).
  • the brake fluid in the wheel brake cylinder 15 will sequentially pass through the brake pipe 20, the third brake pipe 130, the third hydraulic pressure adjustment port 11a, the first hydraulic pressure chamber 16, the second pressure relief hole 13a, After the diversion groove 13b, the first decompression hole 14a, and the decompression pipeline 50, they are discharged into the liquid storage device 30 to realize the rapid decompression operation of the wheel brake cylinder 15.
  • FIG. 13 is a comparison diagram of pressure changes in the pressure reduction process of the hydraulic adjusting device according to the embodiment of the application and the conventional hydraulic adjusting device. It should be noted that, in order to increase the comparability of the two hydraulic adjustment devices, the brake system does not rely on other devices or pipelines for decompression at this time. In FIG. 13, the ordinate represents the pressure in the brake pipe 20, and the abscissa represents the decompression time.
  • the existing hydraulic adjustment device can only perform conventional decompression.
  • the brake pipeline 20 is conventionally decompressed, and the pressure in the brake pipeline 20 drops from p2 to p1.
  • the piston 12 has moved to the inner dead center position, and the brake pipeline 20 cannot be continuously decompressed.
  • the hydraulic adjusting device 10 provided by the embodiment of the present application can perform conventional decompression and rapid decompression.
  • the brake pipeline 20 is routinely decompressed, and the pressure in the brake pipeline 20 drops from p2 to p1.
  • the piston 12 has moved to the inner dead center position, and the brake can be immediately applied.
  • the pipeline 20 performs rapid decompression, that is, during the time period t2-t3, the brake pipeline 20 is quickly decompressed, and the pressure in the brake pipeline 20 drops from p1 to 0.
  • the traditional hydraulic adjusting device has a high initial decompression pressure
  • the piston 12 when the piston 12 is at the inner dead center, it cannot continue to realize the rapid decompression function, that is, the pressure of the brake system is always maintained at p1.
  • the brake system since the pressure of the liquid storage device 30 is 0, the brake system has a very high decompression rate at this time, which is more suitable for emergency situations such as AEB. It is necessary to quickly reduce the pressure during the working condition or ABS/ESP/TCS working process.
  • the brake circuit 20 may be a brake circuit of a dual-circuit brake system.
  • the following describes the hydraulic adjustment device of the embodiment of the present application by taking the brake of the dual-circuit brake system as an example with reference to FIGS. 14 to 21 10.
  • Fig. 14 is a schematic diagram of a dual-circuit hydraulic adjustment unit according to an application embodiment.
  • the hydraulic adjustment unit 1400 shown in FIG. 14 includes a hydraulic adjustment device 10, a first hydraulic chamber 16, a second hydraulic chamber 17, a first brake line 110, a second brake line 120, and a third brake line 130. , The first control valve 111, the second control valve 121.
  • the hydraulic adjusting device 10 has a two-way pressurization/decompression.
  • the hydraulic adjusting device 10 includes a first hydraulic chamber 16 and a second hydraulic chamber 17.
  • the second hydraulic chamber 17 is respectively connected to the first brake line 110 and the second brake line 120.
  • the first brake line 110 is used to provide the first set of wheel brake cylinders 28 and 29 in the braking system. Braking force
  • the second brake line 120 is used to provide braking force for the second set of wheel brake cylinders 26 and 27 in the braking system, wherein a first control valve 111 is provided in the first brake line 110, The on-off state of the first control valve 111 controls the on-off state of the first brake pipe 110, the second brake pipe 120 is provided with a second control valve 121, and the on-off state of the second control valve 121 controls the second brake pipe.
  • the on-off state of the brake line 120 is provided in the first brake line 110,
  • the on-off state of the first control valve 111 controls the on-off state of the first brake pipe 110
  • the second brake pipe 120 is provided with a second control valve 121
  • the on-off state of the second control valve 121 controls the second brake pipe.
  • the on-off state of the above-mentioned first control valve 111 controls the on-off state of the first brake pipe 110. It can be understood that when the first control valve 111 is in the off state, the first brake pipe 110 is disconnected, and the brake fluid It cannot flow to the first set of wheel brake cylinders 28 and 29 through the first brake pipeline 110.
  • the on-off state of the above-mentioned second control valve 121 controls the on-off state of the second brake pipeline 120. It can be understood that the second brake pipeline 120 is disconnected when the second control valve 121 is in the off state, and the brake fluid It cannot flow to the second set of wheel brake cylinders 26 and 27 through the second brake pipe 120.
  • the first set of wheel brake cylinders 28, 29 may include the wheel brake cylinder of the right front wheel and the wheel brake cylinder of the left front wheel of the automobile
  • the second set of wheel brake cylinders 26, 27 may include The brake wheel cylinder of the right rear wheel of the automobile and the brake wheel cylinder of the left rear wheel of the automobile.
  • the above-mentioned hydraulic brake unit can be understood as an H-shaped arrangement in the automobile.
  • the first set of wheel brake cylinders 28, 29 may include the wheel brake cylinder of the right front wheel of the automobile and the wheel brake cylinder of the left rear wheel
  • the second set of wheel brake cylinders 26, 27 may include the right wheel cylinder of the automobile.
  • the above-mentioned hydraulic brake unit can be understood as an X-shaped arrangement in an automobile.
  • the second hydraulic chamber 17 is respectively connected to the first brake line 110 and the second brake line 120, which can be understood as the second hydraulic chamber 17 and the first brake line 110 and the second brake line 120 is directly connected, that is, the fourth hydraulic pressure adjustment port 11b of the second hydraulic pressure chamber 17 is the pressure inlet port of the first brake pipe 110, and the fourth hydraulic pressure adjustment port 11b of the second hydraulic pressure chamber 17 is the second brake pipe
  • the pressure of the road 120 enters the port. In other words, the above-mentioned first brake line 110 and the second brake line 120 are connected.
  • the second hydraulic chamber 17 is respectively connected to the first brake pipe 110 and the second brake pipe 120. It can also be understood that the second hydraulic chamber 17 is connected to the first brake pipe 110 and the first brake pipe 110 and the second brake pipe through a section of pipe.
  • the two brake pipes 120 are connected, that is, the second hydraulic chamber 17 is connected to the first brake pipe 110 and the second brake pipe 120 through the fourth brake pipe 140.
  • the second hydraulic chamber 17 is connected to the first end of the fourth brake line 140, and the second end of the fourth brake line 140 is connected to the first control valve 111 in the first brake line 110.
  • the first end of the fourth brake pipe 140 is connected to the first end of the second control valve 121 in the second brake pipe 120.
  • the above-mentioned first brake line 110 and the second brake line 120 are connected.
  • the first hydraulic chamber 16 is connected to the second brake line 120 through the third brake line 130 in the brake system, and the first hydraulic chamber 16 is the second set of wheel brake cylinders 26 through the second brake line 120. , 27 provides braking force.
  • the third brake pipe 130 communicates with the first brake pipe 110 through the second brake pipe 120, and the first hydraulic pressure
  • the cavity 16 provides braking force for the first set of wheel brake cylinders 28 and 29 through the first brake pipeline 110.
  • the first end of the second control valve 121 is a port connected to the fourth control pipeline 140, and the first end of the second control valve 121 is the two ends of the second control valve 121 connected to the second control pipeline 120. The end other than the first end.
  • the interface between the third brake line 130 and the second brake line 120 is connected to the second end of the second control valve 121, and the second brake line 120 and the third brake line 120 are connected to the second end of the second control valve 121.
  • the pipeline 130 is connected, and the on-off state of the first control valve 111 and the second control valve 121 has no effect on the on-off state between the second brake pipeline 120 and the third brake pipeline 130.
  • the second brake line 120 communicates with the first brake line 110, that is, the third brake line 130 can pass through
  • the second brake line 120 is in communication with the first brake line 110, so that the first hydraulic chamber 17 can pass through the third brake line 130, the second brake line 120, and the first brake line 110.
  • the first set of wheel brake cylinders 28, 29 provide braking force.
  • the second brake line 120 is disconnected from the first brake line 110, that is, the third brake line 130 cannot communicate with the first brake line 110 through the second brake line 120.
  • the first hydraulic chamber 17 can only pass through the third brake line 130 and the second brake line 120 as the second group system.
  • the moving wheel cylinders 26 and 27 provide braking force.
  • the second hydraulic chamber 17 provides braking force for the first set of wheel brake cylinders 28 and 29 through the first brake pipeline 110 provided with the first control valve 111, and is provided with a second control valve 111.
  • the second brake pipe 120 of the valve 121 provides braking force for the second group of wheel brake cylinders 26 and 27, which is beneficial to realize the independent pressure increase of the first brake pipe 110 and the second brake pipe 120, and avoid
  • the first brake line 110 and the second brake line 120 with check valves provide the first set of wheel brake cylinders 28, 29 and the second set of wheel brake cylinders 26, 27.
  • the on-off state of the first brake line 110 and the second brake line 120 cannot be controlled.
  • the second hydraulic chamber 16 can reuse the first brake line 110 provided with the first control valve 111 and the second brake line 120 provided with the second control valve 121 to determine whether it is a second group system.
  • the driving wheel cylinders 26 and 27 provide braking force, which is beneficial to reduce the number of control valves in the braking system and reduce the cost of the braking system.
  • a third control valve 141 can be provided between the second end of the first control valve 111 and the second end of the second control valve 121.
  • the third control valve 141 controls the second control. The on-off between the second end of the valve 121 and the second end of the first control valve 111. In this way, when the third control valve 141 is in the conducting state, the second end of the first control valve 111 and the second end of the second control valve 121 are connected, and the pressure between the two brake lines is equalized.
  • the third control valve 141 may not be provided, which is not limited in the embodiment of the present application.
  • valve 141 since the third control valve 141 is used to balance the pressure of the brake fluid between the first brake pipe 110 and the second brake pipe 120, the third control valve 141 can also be referred to as "pressure equalization”. Valve 141".
  • a first check valve 122 can be provided between the first port and the second port.
  • the first port is between the third brake line 130 and the second brake line 120.
  • the second interface is the interface between the third control valve 141 and the second brake pipeline 120, the first check valve 122 allows the brake fluid to flow from the first interface to the second interface, and the first one The direction valve 122 blocks the flow of brake fluid from the second port to the first port.
  • the first one-way valve 122 may not be provided, which is not limited in the embodiment of the present application.
  • the first hydraulic chamber 16 can pass through the second brake pipeline 120 and the first brake pipeline 110 as the first group of wheel brake cylinders 27, 28 provides braking force.
  • the brake fluid flows from the second brake pipe 120 to the first control valve 111 through the second control valve 121, a part of the brake fluid may flow into the first control valve 111 through the fourth brake pipe 140.
  • the two hydraulic chambers 17 reduce the efficiency of the first hydraulic chamber 16 to provide braking force for the first set of wheel brake cylinders 27 and 28 to a certain extent.
  • a fourth control valve 142 may be provided on the fourth brake pipe 140 to control the on and off of the fourth brake pipe 140 through the on and off of the fourth control valve 142.
  • the fourth control valve 142 is in the disconnected state.
  • the brake fluid flows from the second brake pipeline 120 through the second control valve 121.
  • the brake fluid entering the fourth brake pipeline 140 will be blocked by the fourth control valve 142 and cannot flow into the second hydraulic chamber 17.
  • the arrangement of the control valves in the above-mentioned brake pipeline can be seen in FIG. 15.
  • a fifth control valve 131 can also be provided on the third brake pipeline 130, and the third control valve 131 is controlled by the on-off state of the fifth control valve 131.
  • the brake pipeline 130 is turned on and off.
  • connection between the hydraulic adjustment device and the dual-circuit brake system in the embodiment of the present application is described above in conjunction with FIGS. 14 to 16.
  • the connection between the hydraulic adjustment device and the liquid storage device 30 is described below in conjunction with FIGS. 17 and 18 Way. It should be understood that, for ease of understanding, the following uses the hydraulic adjustment device 10 as an example to introduce the connection between the hydraulic adjustment device 10 and the liquid storage device 30.
  • connection mode 1 The second hydraulic chamber 17 is provided with a liquid inlet pipe 170 connected to the liquid storage device 30, and the first hydraulic chamber 16 is not provided with a liquid inlet pipe connected to the liquid storage device 30.
  • FIG. 17 is a schematic diagram of the first connection mode of the liquid storage device and the hydraulic adjusting device 10 in the embodiment of the present application.
  • a check valve 171 is provided on the liquid inlet pipe 1, and the check valve 171 allows the brake fluid in the liquid inlet pipe 1 to flow from the liquid storage device 30 to the second hydraulic chamber 17.
  • the first hydraulic pressure regulating port (also called “liquid outlet”) 14 a in the first hydraulic chamber 16 is connected to the first liquid outlet pipe 180.
  • the second control valve 121 when the second control valve 121 is in the conducting state, in the positive pressurization mode of the hydraulic adjustment device 10, a part of the brake fluid in the second hydraulic chamber 17 flows into the dual-circuit brake system, and a part passes through the second
  • the control valve 121 flows into the third brake pipe 130, and flows into the first hydraulic chamber 16 through the third brake pipe 130, that is to say, in the process of positive pressurization, the inlet pipe of the first hydraulic chamber 16 It is the third brake line 130.
  • the brake fluid in the dual-circuit braking system is pumped into the second hydraulic chamber 17.
  • the dual-circuit braking The remaining brake fluid in the system flows to the fluid storage device 30 through the first fluid outlet pipe 180.
  • the first hydraulic chamber 16 is provided with a liquid inlet pipe 2 190 connected with the liquid storage device 30, and the second hydraulic chamber 17 is provided with a liquid inlet pipe 1 170 connected with the liquid storage device 30.
  • FIG. 18 is a schematic diagram of the second connection mode of the liquid storage device and the hydraulic adjusting device 10 in the embodiment of the present application.
  • a check valve 171 is provided on the liquid inlet pipe 1, and the check valve 171 allows the brake fluid in the liquid inlet pipe 1 to flow from the liquid storage device 30 to the second hydraulic chamber 17.
  • the first hydraulic pressure regulating port (also called “liquid outlet”) 14 a in the first hydraulic chamber 16 is connected to the first liquid outlet pipe 180.
  • a check valve 191 is provided on the inlet pipe 2 190.
  • the check valve 191 allows the brake fluid in the inlet pipe 2 to flow from the liquid storage device 30 to the first hydraulic chamber 16, and prevents the brake fluid in the inlet pipe 2 from flowing into the first hydraulic chamber 16. The brake fluid flows from the first hydraulic chamber 16 to the fluid storage device 30.
  • the second control valve 121 when the second control valve 121 is in the conducting state, in the positive pressurization mode of the hydraulic adjustment device 10, a part of the brake fluid in the second hydraulic chamber 17 flows into the dual-circuit brake system, and a part passes through the second
  • the control valve 121 flows into the third brake pipe 130, and flows into the first hydraulic chamber 16 through the third brake pipe 130, that is to say, in the process of positive pressurization, the inlet pipe of the first hydraulic chamber 16 It is the third brake line 130.
  • the brake fluid in the dual-circuit braking system is pumped into the second hydraulic chamber 17.
  • the dual-circuit braking The remaining brake fluid in the system flows to the fluid storage device 30 through the first fluid outlet pipe 180.
  • the connection between the hydraulic adjustment device 10 and the dual-circuit brake pipeline is described above in conjunction with Figures 2 to 18.
  • the units 1400 to 1600 can be combined with the hydraulic adjustment units 1700 and 1800 arbitrarily.
  • the hydraulic adjustment unit 1400 and the hydraulic adjustment unit 1800 are combined, the hydraulic adjustment unit 1500 is combined with the hydraulic adjustment unit 1800, and the hydraulic adjustment unit 1600 and the hydraulic adjustment unit 1800 are combined as examples.
  • the mechanism of power is described above in conjunction with Figures 2 to 18.
  • the manual braking mode triggered by the driver by stepping on the brake pedal the line control motion mode triggered by the driver by stepping on the brake pedal, and the automatic driving scenario can also be implemented.
  • the driverless braking mode The principle of the braking process in the manual braking mode is similar to the braking process in the existing braking system in the manual braking mode. For the sake of brevity, the details will not be described in detail. The following mainly introduces the two-way pressure increase and two-way pressure reduction process of the pressure regulating device 10 in the brake-by-wire mode and the unmanned braking mode.
  • Fig. 19 is a schematic diagram of a hydraulic adjustment unit according to an embodiment of the present application.
  • the functions implemented by the master cylinder pressure increase adjustment unit 910 in the hydraulic adjustment unit 1900 shown in FIG. 19 are the manual braking mode and the brake-by-wire mode that require the driver's participation.
  • the driver depresses the brake pedal 911 to flow the brake fluid in the master cylinder 917 into the pedal feel simulator 912 through the brake pipeline where the control valve 913 is located.
  • the control valve 915 and the control valve 916 are in a disconnected state.
  • the hydraulic regulator 10 is based on the pedal stroke detected by the pedal stroke sensor 918, or the pressure of the brake fluid detected by the pressure sensor 914, as The dual-circuit braking system provides braking force.
  • the control valve 915 and the control valve 916 are in a communication state, and the brake fluid provides braking force to the brake wheel cylinders 26, 27, 28, 29 through the brake pipeline 160 and the brake pipeline 150.
  • the first control valve 111, the second control valve 121, the third control valve 141, and the inlet valve 920 corresponding to the brake wheel cylinders 26, 27, 28, 29 are in conduction
  • the control valve 915, the control valve 916, and the discharge valve 930 corresponding to the wheel brake cylinders 26, 27, 28, and 29 are in an open state.
  • the brake fluid in the second hydraulic chamber 17 passes through the first brake pipe 110 and the second brake pipe respectively.
  • the circuit 120 is pressed into the brake pipe 150 and the brake pipe 160, the brake wheel cylinders 28 and 29 are pressed into the brake pipe 150, and the brake wheel cylinders 26 and 27 are pressed into the brake pipe 160.
  • a part of the brake fluid can also enter the first hydraulic chamber 16 through the third brake pipe 130, so as to replenish the first hydraulic chamber 16 and reduce the driving device. 15 drives the driving force of the piston 12.
  • the brake fluid in the liquid storage device 30 can also enter the first hydraulic chamber 16 through the oil inlet pipe 2 190 to replenish the first hydraulic chamber 16 and reduce the driving force of the driving device 15 to drive the piston 12.
  • Another part of the brake fluid in the first hydraulic chamber 16 enters the second brake line 120 through the connected third brake pipe 130 and the second brake pipe 120, and passes through the second control valve 121 and the first control valve.
  • 111 enters the first brake line 110 and provides braking force for the first group of wheel brake cylinders 28 and 29 through the brake line 150.
  • the brake fluid in the liquid storage device 30 can also enter the second hydraulic chamber 17 through the oil inlet pipe 2 170 to replenish the second hydraulic chamber 17 and reduce the driving force of the driving device 15 to drive the piston 12.
  • the control valve 915, the control valve 916, the inlet valve 920 corresponding to the brake wheel cylinders 26, 27, 28, 29, and the brake wheel cylinders 26, 27, 28, 29 correspond to
  • the outlet valve 930 is in an off state, and the first control valve 111, the second control valve 121, and the third control valve 141 are in an on state.
  • the volume of the second hydraulic chamber 17 is the largest. At this time, the second hydraulic chamber 17 cannot continue to contain the brake fluid, and the remaining brakes in the wheel cylinders 26, 27, 28, 29 are braked.
  • the fluid can continue to flow through the first brake line 110 to the second control valve 121, through the second control valve 121 to the third brake line 130, and then flow into the second hydraulic chamber through the third brake line 130 16, and flow into the liquid storage device 30 through the first liquid outlet pipe 180.
  • the brake fluid in the second set of wheel brake cylinders 26, 27 is pumped through the second brake pipeline 120.
  • the brake fluid in the first set of wheel brake cylinders 28 and 29 is drawn into the first brake pipe 110, and flows into the third brake pipe 130 through the first control valve 111 and the second control valve 121, and finally passes through the first brake pipe.
  • the third control pipeline 130 flows into the first hydraulic chamber 16.
  • the outlet valve 930 corresponding to the brake wheel cylinders 26, 27, 28, 29 can be controlled to be in a conductive state, and the remaining brake fluid in the brake system can be corresponded to by the brake wheel cylinders 26, 27, 28, 29
  • the liquid outlet valve 930 of the valve flows to the liquid storage device 30 through the decompression pipeline.
  • the pressure regulating device 10 When the pressure regulating device 10 is in a two-way pressure-increasing mode of single-circuit braking, assuming that the brake circuit 940 fails, the pressure regulating device 10 needs to provide braking force for the brake circuit 950.
  • the third control valve 141, the second control valve 121, the control valve 915, the control valve 916, and the outlet valve 930 corresponding to the brake wheel cylinders 26, 27, 28, 29 are in the open state, and the first The control valve 111 and the outlet valve 930 corresponding to the wheel brake cylinders 28 and 29 are in a conducting state.
  • the volume of the first hydraulic chamber 16 increases, and a part of the brake fluid can also enter the first hydraulic chamber 16 through the third brake pipe 130, so as to The hydraulic chamber 16 performs fluid replenishment to reduce the driving force of the driving device 15 to drive the piston 12.
  • the brake fluid in the liquid storage device 30 can also enter the first hydraulic chamber 16 through the oil inlet pipe 2 190 to replenish the first hydraulic chamber 16 and reduce the driving force of the driving device 15 to drive the piston 12.
  • the pressure regulating device 10 When the pressure regulating device 10 is in a two-way pressurization mode of single-circuit braking, assuming that the brake circuit 950 fails, the pressure regulating device 10 needs to provide braking force for the brake circuit 940.
  • the third control valve 141, the first control valve 111, the control valve 915, the control valve 916, and the outlet valve 930 corresponding to the brake wheel cylinders 26, 27, 28, 29 are in the open state, and the second The control valve 121 and the outlet valve 930 corresponding to the wheel brake cylinders 26 and 27 are in a conducting state.
  • the driving device 15 drives the piston 12 to compress the volume of the second hydraulic chamber 17 to press the brake fluid in the second hydraulic chamber 17 into the brake line 160 through the second brake pipe 120. And the brake wheel cylinders 26 and 27 are pressed into the brake pipe 160. Since the first control valve 111 and the third control valve 141 in the first brake pipeline 110 are in a disconnected state, the brake fluid in the second hydraulic chamber 17 cannot pass through the first brake pipeline 110.
  • the volume of the first hydraulic chamber 16 increases, and the brake fluid in the fluid storage device 30 can enter the first hydraulic chamber 16 through the oil inlet pipe 2190 to correct
  • the first hydraulic chamber 16 performs fluid replenishment to reduce the driving force of the driving device 15 to drive the piston 12.
  • Fig. 20 is a schematic diagram of a hydraulic adjustment unit according to another embodiment of the present application.
  • the functions implemented by the master cylinder pressure-increasing adjustment unit 910 in the hydraulic adjustment unit 2000 shown in FIG. 20 are the same as those implemented by the hydraulic adjustment unit 1900 shown in FIG.
  • the pressure regulating device 10 can be divided into a forward pressurization process and a reverse pressurization process.
  • the first control valve 111, the second control valve 121, and the fourth control valve 142, and the inlet valve 1020 corresponding to the brake wheel cylinders 26, 27, 28, 29 are in a conducting state to control
  • the valve 915, the control valve 916, and the outlet valve 1030 corresponding to the wheel brake cylinders 26, 27, 28, and 29 are in an open state.
  • the driving device 15 drives the piston 12 to compress the volume of the second hydraulic chamber 17 to press the brake fluid in the second hydraulic chamber 17 into the brake pipe through the first brake pipe 110 and the second brake pipe 120 respectively 150 and the brake pipe 160, and press into the wheel brake cylinders 28 and 29 through the brake pipe 150, and press into the wheel brake cylinders 26 and 27 through the brake pipe 160.
  • a part of the brake fluid can also enter the first hydraulic chamber 16 through the third brake pipe 130, so as to replenish the first hydraulic chamber 16 and reduce the driving device. 15 drives the driving force of the piston 12.
  • the brake fluid in the liquid storage device 30 can also enter the first hydraulic chamber 16 through the oil inlet pipe 2 190 to replenish the first hydraulic chamber 16 and reduce the driving force of the driving device 15 to drive the piston 12.
  • the first control valve 111, the second control valve 121, and the inlet valve 1020 corresponding to the brake wheel cylinders 26, 27, 28, 29 are in a conducting state, and the control valve 915 and the control valve 916 , The outlet valve 1030 and the fourth control valve 142 corresponding to the brake wheel cylinders 26, 27, 28, 29 are in a disconnected state.
  • the pipeline 160 provides braking force for the second set of wheel brake cylinders 26 and 27.
  • Another part of the brake fluid in the first hydraulic chamber 16 enters the second brake line 120 through the connected third brake pipe 130 and the second brake pipe 120, and passes through the second control valve 121 and the first control valve.
  • 111 enters the first brake line 110 and provides braking force for the first group of wheel brake cylinders 28 and 29 through the brake line 150.
  • the brake fluid flows through the second control valve 121, since the fourth control valve 142 is in an open state, the brake fluid will be blocked from flowing into the second hydraulic chamber 17 through the fourth brake pipe 140.
  • the brake fluid in the liquid storage device 30 can also enter the second hydraulic chamber 17 through the oil inlet pipe 2 170 to replenish the second hydraulic chamber 17 and reduce the driving force of the driving device 15 to drive the piston 12.
  • the pressure regulating device 10 can be divided into a forward pressure increase process and a reverse pressure increase process.
  • the outlet valve 1030 corresponding to 29 is in the off state, and the first control valve 111 and the second control valve 121 are in the on state.
  • the volume of the second hydraulic chamber 17 is the largest.
  • the second hydraulic chamber 17 cannot continue to contain the brake fluid, and the remaining brake fluid in the first group of wheel brake cylinders 28 and 29 It can continue to flow through the first brake line 110 to the second control valve 121, through the second control valve 121 to the third brake line 130, and then flow into the second hydraulic chamber 16 through the third brake line 130. , And flow into the liquid storage device 30 through the first liquid outlet pipe 180.
  • the remaining brake fluid in the second set of wheel brake cylinders 26 and 27 can continue to flow through the second brake line 120 to the third brake line 130, and flow into the second hydraulic chamber through the third brake line 130 16, and flow into the liquid storage device 30 through the first liquid outlet pipe 180.
  • the brake fluid in the second set of wheel brake cylinders 26, 27 is pumped through the second brake pipeline 120. It enters the third brake line 130 and is drawn into the first hydraulic chamber 16 through the third brake line 130.
  • the brake fluid in the first set of wheel brake cylinders 28 and 29 is drawn into the first brake pipe 110, and flows into the third brake pipe 130 through the first control valve 111 and the second control valve 121, and finally passes through the first brake pipe.
  • the third control pipeline 130 flows into the first hydraulic chamber 16.
  • the outlet valve 1030 corresponding to the brake wheel cylinders 26, 27, 28, 29 can be controlled to be in a conductive state, and the remaining brake fluid in the brake system can be corresponded to by the brake wheel cylinders 26, 27, 28, 29
  • the liquid outlet valve 1030 flows to the liquid storage device 30 through the decompression pipeline.
  • the pressure regulating device 10 When the pressure regulating device 10 is in the two-way pressure-increasing mode of single-circuit braking, assuming that the brake circuit 1040 fails, the pressure regulating device 10 needs to provide braking force for the brake circuit 1050.
  • the second control valve 121, the control valve 915, the control valve 916, and the outlet valve 1030 corresponding to the brake wheel cylinders 26, 27, 28, 29 are in the open state
  • the third control valve 141, the first The control valve 111 and the outlet valve 1030 corresponding to the wheel brake cylinders 28 and 29 are in a conducting state.
  • the volume of the first hydraulic chamber 16 increases, and the brake fluid in the fluid storage device 30 can enter the first hydraulic chamber 16 through the oil inlet pipe 2190 to correct
  • the first hydraulic chamber 16 performs fluid replenishment to reduce the driving force of the driving device 15 to drive the piston 12.
  • the pressure regulating device 10 When the pressure regulating device 10 is in the two-way boost mode of single-circuit braking, assuming that the brake circuit 1050 fails, the pressure regulating device 10 needs to provide braking force for the brake circuit 1040.
  • the first control valve 111, the control valve 915, the control valve 916, and the outlet valve 1030 corresponding to the brake wheel cylinders 26, 27, 28, 29 are in the open state
  • the fourth control valve 142, the second The control valve 121 and the outlet valve 1030 corresponding to the wheel brake cylinders 26 and 27 are in a conducting state.
  • the driving device 15 drives the piston 12 to compress the volume of the second hydraulic chamber 17 to press the brake fluid in the second hydraulic chamber 17 into the brake line 160 through the second brake pipe 120, and press it through the brake line 160.
  • the driving device 15 drives the piston 12 to compress the volume of the second hydraulic chamber 17 to press the brake fluid in the second hydraulic chamber 17 into the brake line 160 through the second brake pipe 120, and press it through the brake line 160.
  • the brake wheel cylinders 26,27 Since the first control valve 111 in the first brake line 110 is in a disconnected state, the brake fluid in the second hydraulic chamber 17 cannot pass through the first brake line 110.
  • the volume of the first hydraulic chamber 16 increases, and the brake fluid in the fluid storage device 30 can enter the first hydraulic chamber 16 through the oil inlet pipe 2190 to correct
  • the first hydraulic chamber 16 performs fluid replenishment to reduce the driving force of the driving device 15 to drive the piston 12.
  • the volume of the first hydraulic chamber 16 is increased, and a part of the brake fluid in the second brake pipeline 120 can also enter the first hydraulic chamber 16 through the third brake pipeline 130 to perform the operation on the first hydraulic chamber 16.
  • Replenishing fluid reduces the driving force of the driving device 15 to drive the piston 12.
  • Fig. 21 is a schematic diagram of a hydraulic adjustment unit according to an embodiment of the present application.
  • the functions implemented by the master cylinder booster adjustment unit 1900 in the hydraulic adjustment unit 2100 shown in FIG. 21 are the same as those implemented by the hydraulic adjustment unit 1900 shown in FIG.
  • the pressure regulating device 10 can be divided into a forward pressurization process and a reverse pressurization process.
  • the first control valve 111, the second control valve 121, and the fourth control valve 142, and the inlet valve 1120 corresponding to the wheel brake cylinders 26, 27, 28, 29 are in a conducting state
  • the five control valve 131, the control valve 915, the control valve 916, and the outlet valve 1130 corresponding to the brake wheel cylinders 26, 27, 28, and 29 are in an open state.
  • the driving device 15 drives the piston 12 to compress the volume of the second hydraulic chamber 17 to press the brake fluid in the second hydraulic chamber 17 into the brake pipe through the first brake pipe 110 and the second brake pipe 120 respectively 150 and the brake pipe 160, and press into the wheel brake cylinders 28 and 29 through the brake pipe 150, and press into the wheel brake cylinders 26 and 27 through the brake pipe 160.
  • the brake fluid in the fluid storage device 30 can enter the first hydraulic chamber 16 through the oil inlet pipe 2 190 to replenish the first hydraulic chamber 16 and reduce The driving device 15 drives the driving force of the piston 12.
  • the brake fluid in the second brake line 120 cannot enter the first hydraulic chamber 16 through the third brake line 130.
  • the first control valve 111, the second control valve 121, the fifth control valve 131, and the inlet valve 1120 corresponding to the wheel brake cylinders 26, 27, 28, 29 are in a conducting state, and the control valve 915, the control valve 916, the outlet valve 1130 corresponding to the wheel brake cylinders 26, 27, 28, and 29, and the fourth control valve 142 are in a disconnected state.
  • the pipeline 160 provides braking force for the second set of wheel brake cylinders 26 and 27.
  • Another part of the brake fluid in the first hydraulic chamber 16 enters the second brake line 120 through the connected third brake pipe 130 and the second brake pipe 120, and passes through the second control valve 121 and the first control valve.
  • 111 enters the first brake line 110 and provides braking force for the first group of wheel brake cylinders 28 and 29 through the brake line 150.
  • the brake fluid flows through the second control valve 121, since the fourth control valve 142 is in an open state, the brake fluid will be blocked from flowing into the second hydraulic chamber 17 through the fourth brake pipeline 140.
  • the brake fluid in the liquid storage device 30 can also enter the second hydraulic chamber 17 through the oil inlet pipe 2 170 to replenish the second hydraulic chamber 17 and reduce the driving force of the driving device 15 to drive the piston 12.
  • the pressure regulating device 10 can be divided into a forward pressure increase process and a reverse pressure increase process.
  • the outlet valve 1130 corresponding to 29 is in the off state, and the fifth control valve 131, the first control valve 111, and the second control valve 121 are in the on state.
  • the volume of the second hydraulic chamber 17 is the largest.
  • the second hydraulic chamber 17 cannot continue to contain the brake fluid, and the remaining brake fluid in the first group of wheel brake cylinders 28 and 29 It can continue to flow through the first brake line 110 to the second control valve 121, and through the second control valve 121 to the third brake line 130. Since the fifth control valve 131 is in the conducting state, the brake fluid It can flow into the second hydraulic chamber 16 through the third brake pipe 130 and flow into the liquid storage device 30 through the first liquid outlet pipe 180.
  • the remaining brake fluid in the second set of wheel brake cylinders 26 and 27 can continue to flow through the second brake line 120 to the third brake line 130, and flow into the second hydraulic chamber through the third brake line 130 16, and flow into the liquid storage device 30 through the first liquid outlet pipe 180.
  • the brake fluid in the second set of wheel brake cylinders 26, 27 is pumped through the second brake pipeline 120. It enters the third brake line 130 and is drawn into the first hydraulic chamber 16 through the third brake line 130.
  • the brake fluid in the first set of wheel brake cylinders 28 and 29 is drawn into the first brake pipe 110, and flows into the third brake pipe 130 through the first control valve 111 and the second control valve 121, and finally passes through the first brake pipe.
  • the third control pipeline 130 flows into the first hydraulic chamber 16.
  • the outlet valve 1130 corresponding to the brake wheel cylinders 26, 27, 28, 29 can be controlled to be in a conductive state, and the remaining brake fluid in the brake system can be corresponded to by the brake wheel cylinders 26, 27, 28, 29
  • the liquid outlet valve 1130 flows to the liquid storage device 30 through the decompression pipeline.
  • the pressure regulating device 10 When the pressure regulating device 10 is in the bidirectional boost mode of single-circuit braking, assuming that the brake circuit 1140 fails, the pressure regulating device 10 needs to provide braking force for the brake circuit 1150.
  • the second control valve 121, the control valve 915, the control valve 916, and the outlet valve 1130 and the fifth control valve 131 corresponding to the wheel brake cylinders 26, 27, 28, 29 are in the open state
  • the third The control valve 141, the first control valve 111, and the discharge valve 1130 corresponding to the wheel brake cylinders 28 and 29 are in a conducting state.
  • the volume of the first hydraulic chamber 16 increases, and the brake fluid in the fluid storage device 30 can enter the first hydraulic chamber 16 through the oil inlet pipe 2190 to correct
  • the first hydraulic chamber 16 performs fluid replenishment to reduce the driving force of the driving device 15 to drive the piston 12.
  • the pressure regulating device 10 When the pressure regulating device 10 is in the two-way pressure-increasing mode of single-circuit braking, assuming that the brake circuit 1150 fails, the pressure regulating device 10 needs to provide braking force for the brake circuit 1140.
  • the first control valve 111, the control valve 915, the control valve 916, and the outlet valves 1130 and the fifth control valve 131 corresponding to the brake wheel cylinders 26, 27, 28, 29 are in the open state
  • the fourth The control valve 142, the second control valve 121, and the discharge valve 1130 corresponding to the wheel brake cylinders 26 and 27 are in a conducting state.
  • the brake fluid in the fluid storage device 30 can enter the first hydraulic chamber 16 through the oil inlet pipe 2190 to correct
  • the first hydraulic chamber 16 performs fluid replenishment to reduce the driving force of the driving device 15 to drive the piston 12.
  • the brake fluid in the second brake pipe 120 cannot enter the first hydraulic chamber 16 through the third brake pipe 130, which is beneficial to improve the braking performance of the pressure regulating device 10
  • the circuit 1140 provides the efficiency of the braking force.
  • the hydraulic adjusting device, hydraulic adjusting unit, and braking system provided by the embodiment of the present application are described above in conjunction with FIGS. 2 to 21.
  • the control method of the embodiment of the present application is described below in conjunction with FIG. 22 and FIG. 23. It should be noted that this The control method of the application embodiment can be applied to any of the devices introduced above, which is not limited in the embodiment of the application.
  • Fig. 22 is a flowchart of a control method according to an embodiment of the present application.
  • the method shown in FIG. 22 can be executed by the controller in the car.
  • the method shown in FIG. 22 includes step 2210 and step 2220.
  • the controller generates a control instruction, and the control instruction is used to control the driving device 15.
  • control commands may include operating parameters such as torque that the drive device needs to provide.
  • the controller sends a control instruction to the driving device 15 to drive the push rod 13 to push the piston 12 to move along the inner wall of the hydraulic cylinder 11 by controlling the driving device 15.
  • the liquid outlet pipeline of the first hydraulic chamber 16 is arranged in sections on the push rod support portion 14 corresponding to the first hydraulic adjustment port 14a and the push rod 13 corresponds to the second hydraulic adjustment port 13a. In this way, when the piston 12 is at the inner dead center of the piston stroke, the first hydraulic pressure adjustment port 14a communicates with the second end of the second hydraulic pressure adjustment port 13a.
  • the adjustment port 14a is not connected to the second end of the second hydraulic adjustment port 13a, that is, the on-off state of the first hydraulic adjustment port 14a and the second hydraulic adjustment port 13a is controlled by the position of the piston 12 in the piston stroke, avoiding the traditional
  • the hydraulic adjustment device needs to be specially equipped with a control valve for the first hydraulic chamber 16 to control the on and off of the outlet pipe of the first hydraulic chamber 16, which is beneficial to reduce the number of control valves in the hydraulic adjustment unit and reduce the number of control valves in the hydraulic adjustment unit. the cost of.
  • the above step 2220 includes: in the process of decompressing the brake system, the controller sends a control instruction to the driving device 15, and the driving device 15 is controlled to drive the push rod 13 to push the piston 12 to move. To the inner dead point.
  • the control piston 12 moves to the inner dead center of the piston stroke, and the first hydraulic pressure adjustment port 14a is connected with the second hydraulic pressure adjustment port 13a so that the brake fluid
  • the first hydraulic chamber 16 can still be discharged through the connected first hydraulic pressure adjusting port 14a and the second hydraulic pressure adjusting port 13a, which is beneficial to improve the pressure reducing performance of the brake system.
  • the above step 2220 includes: in the process of pressurizing the brake system, the controller sends a control instruction to the driving device 15, and the driving device 15 is controlled to drive the push rod 13 to push the piston 12 to compress.
  • the volume of the second hydraulic chamber 17 is used to press the first part of the brake fluid in the second hydraulic chamber 17 into the wheel cylinder of the brake system through the first pipe 60 in the brake system, and the first pipe 60
  • the second hydraulic chamber 17 is connected with the wheel brake cylinder, and the first part of the brake fluid is part or all of the brake fluid in the second hydraulic chamber 17.
  • control piston 12 compresses the volume of the second hydraulic chamber 17 to press the first part of the brake fluid in the second hydraulic chamber 17 into the brake system through the first pipeline 60 in the brake system.
  • the brake wheel cylinder realizes the positive pressurization process.
  • the piston 12 in the process of pressurizing the brake system, is located at a position other than the inner dead center in the stroke of the piston, and the first hydraulic pressure adjustment port 14a and the second hydraulic pressure adjustment port 13a The second end is not connected.
  • the first hydraulic pressure regulating port 14a in the process of pressurizing the brake system, is not connected to the second end of the second hydraulic pressure regulating port 13a. At this time, the first hydraulic pressure chamber 16 can be used for storing Brake fluid.
  • the controller sends a control instruction to the driving device 15, and by controlling the driving device 15 to drive the push rod 13 to push the piston 12 to compress the volume of the second hydraulic chamber 17, so as to pass the second part of the brake fluid through
  • the third brake pipeline 130 is pressed into the first hydraulic chamber 16 and stored in the first hydraulic chamber 16, and the third brake pipeline 130 communicates with the first hydraulic chamber 16 and the second hydraulic chamber 17.
  • the second part of the brake fluid in the second hydraulic chamber 17 can flow into the first hydraulic chamber 16 through the third brake pipeline 130, so as to reduce the first hydraulic chamber 16 and the second hydraulic chamber 16
  • the pressure difference in 17 helps reduce the power required by the driving device to drive the piston.
  • the above step 2220 includes: in the process of pressurizing the brake system, the controller sends a control instruction to the driving device 15, and the driving device 15 is controlled to drive the push rod 13 to push the piston 12 to compress.
  • the volume of the first hydraulic chamber 16 is used to press the second part of the brake fluid into the brake wheel cylinders of the brake system through the third brake pipeline 130, wherein the third brake pipeline 130 is also used to communicate with the first Hydraulic chamber 16 and brake wheel cylinder.
  • FIG. 23 is a flowchart of a control method according to another embodiment of the present application.
  • the method shown in FIG. 23 can be executed by the controller in the car.
  • the method shown in FIG. 23 includes step 1410 to step 1470.
  • step 1410 the controller detects the state of the braking system.
  • the controller detects the state of the braking system, and determines that the braking system has no faults or failures and can work normally.
  • the controller can determine the state of the brake system based on the pressure sensor (not shown in the figure) set in the brake system, for example, it can be on the third brake pipe 130 and the first pipe 60 in the brake system Set a pressure sensor to detect the pressure of the brake fluid in the pipeline, and judge the state of the brake system based on the pressure of the brake fluid in the pipeline.
  • the controller may also determine the state of the brake system based on the current pressure build-up time of the brake system and the average pressure build-up time of the brake system.
  • step 1415 the controller determines that the vehicle has a braking demand.
  • the controller may determine that the braking system has a braking requirement based on the driver's input (ie, forming a sensor through a pedal), and the controller may also determine that the braking system has a braking requirement based on the road condition information of the vehicle. This is not limited. After it is determined that the vehicle has a braking requirement, step 1420 is entered.
  • step 1420 the controller controls the driving device 15 to be energized and prepares for boosting work.
  • step 1425 the controller determines whether the hydraulic pressure regulating device 10 performs positive pressure increase, if yes, it proceeds to step 1430, if not, it proceeds to step 1435.
  • step 1430 the controller turns on the pipeline switch element 61 and controls the piston 12 to move to the left.
  • step 1435 the controller turns off the pipeline switching element 61 and controls the piston 12 to move to the right.
  • the controller can control the driving device 15 to energize, and determine whether to perform positive pressure increase according to the current position of the piston 12. If the piston 12 is currently at the inner dead center, the controller can determine that the hydraulic adjustment device 10 is positively pressurized. At this time, step 1430 is entered. The controller opens the pipeline switch element 61 and controls the piston 12 to move to the left, so that the hydraulic adjustment device 10 through the second hydraulic chamber 17, the first pipeline 60 to positively pressurize the brake pipeline 20.
  • step 1435 is entered. 10 through the first hydraulic chamber 17 and the third brake line 130 to reversely pressurize the brake line 20.
  • step 1440 After the hydraulic pressure regulating device 10 performs forward pressure increase or reverse pressure increase, that is, after step 1430 or step 1435 is completed, it proceeds to step 1440.
  • step 1440 the controller determines whether the hydraulic pressure regulating device 10 continues to perform a pressure increase operation on the brake line 20. If yes, go back to step 1425, if not, go to step 1445.
  • the controller determines whether the braking force applied to the wheels needs to be increased according to the braking demand, and if so, it determines that the hydraulic adjusting device 10 needs to continue to pressurize the brake pipeline 20, and at this time, it can return to step 1425, The controller determines to continue the positive pressure increase or the reverse pressure increase of the brake line 20.
  • step 1445 may be entered at this time.
  • Steps 1420 to 1440 in the dashed box A in Fig. 23 can realize two-way continuous and stable pressurization (build pressure) of the brake system, can achieve stable pressurization, ensure the continuity of the pressurization process, and improve the comfort during braking sex.
  • step 1445 the controller determines whether to enter the pressure holding process. If yes, go to step 1450, if not, go to step 1455.
  • step 1450 the controller controls the driving device 15 to power off and stop working.
  • step 1455 the controller determines that the system is decompressed.
  • step 1445 the controller determines whether to enter the pressure holding process according to specific braking requirements. If the controller determines that it is necessary to maintain the current braking force unchanged, it can enter the pressure holding process. At this time, the corresponding valve can be closed and step 1450 can be entered. At this time, the controller can control the driving device 15 to power off and stop working. If the controller determines that the pressure holding process does not need to be entered, step 1455 can be entered at this time.
  • step 1455 the controller determines whether the brake system needs to be decompressed.
  • the controller can determine whether to reduce or cancel the braking force applied to the wheels according to the specific braking demand. If so, the braking system can be decompressed. At this time, steps 1460 to 1470 are performed. If not, end this operation.
  • step 1460 the controller turns on the pipeline switching element 61.
  • step 1465 the controller controls the driving device 15 to be energized to start working, and drives the piston 12 to move to the right.
  • step 1470 the controller performs system decompression on the brake system through the hydraulic adjustment device 10.
  • the controller may turn on the pipeline switching element 61 so that the first regulating first pipeline 60 is turned on.
  • the controller controls the driving device 15 to drive the piston to move to the right, and the high-pressure brake fluid in the brake pipe 20 enters the second hydraulic chamber 17 through the first regulating first pipe 60 to perform conventional reduction of the brake system. Pressure.
  • the piston 12 continues to move the piston 12 so that the piston 12 reaches the inner dead center position and is fixed at the inner dead center.
  • the second pressure relief hole 13a and the first pressure relief hole 14a are connected, and the brake pipe 20 After passing through the third brake pipeline 130, the first hydraulic chamber 16, and the pressure reducing pipeline 50, the high-pressure brake fluid is discharged into the liquid storage device 30 to achieve rapid pressure reduction of the braking system.
  • control method of the embodiment of the present application is described above with reference to FIGS. 22 and 23, and the control device for executing the above control method is described below with reference to FIGS. 24 and 25. It should be noted that the device in the embodiment of the present application can be applied to any hydraulic adjustment unit or braking system described above to implement any one of the control methods described above. For the sake of brevity, it will not be repeated here.
  • FIG. 24 is a schematic diagram of a control device according to an embodiment of the present application.
  • the control device 2400 shown in FIG. 24 includes a generating unit 2410 and a sending unit 2420.
  • the generating unit 2410 is used to generate control instructions, and the control instructions are used to control the driving device 15.
  • the sending unit 2420 the controller sends a control instruction to the driving device 15, and by controlling the driving device 15 to drive the push rod 13 to push the piston 12 to move along the inner wall of the hydraulic cylinder 11.
  • the generating unit 2410 may be a processor 2520, the sending unit 2420 may be a communication interface 2530, and the specific structure of the controller is shown in FIG. 25.
  • FIG. 25 is a schematic block diagram of a controller according to another embodiment of the present application.
  • the controller 2500 shown in FIG. 25 may include a memory 2510, a processor 2520, and a communication interface 2530.
  • the memory 2510, the processor 2520, and the communication interface 2530 are connected by an internal connection path.
  • the memory 2510 is used to store instructions, and the processor 2520 is used to execute the instructions stored in the memory 2520 to control the communication interface 2530 to receive/send information.
  • the memory 2510 may be coupled with the processor 2520 through an interface, or may be integrated with the processor 2520.
  • the aforementioned communication interface 2530 uses devices such as, but not limited to, an input/output interface to implement communication between the controller 2500 and other devices or communication networks.
  • each step of the above method can be completed by an integrated logic circuit of hardware in the processor 2520 or instructions in the form of software.
  • the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 2510, and the processor 2520 reads the information in the memory 2510, and completes the steps of the foregoing method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the processor may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), and dedicated integration Circuit (application specific integrated circuit, ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory may include a read-only memory and a random access memory, and provide instructions and data to the processor.
  • a part of the processor may also include a non-volatile random access memory.
  • the processor may also store device type information.
  • the “liquid outlet pipe” and the “liquid inlet pipe” involved may correspond to different brake pipes, or may correspond to the same brake pipe.
  • “Liquid outlet pipe” and “Liquid inlet pipe” are only distinguished based on the function of the brake pipe in the brake system. For example, when the "liquid outlet pipe” and “liquid inlet pipe” correspond to the same brake pipe 1, it can be understood that the brake pipe in the brake system 1 is used to deliver the brake fluid in the brake wheel cylinder to the liquid storage device. At this time, the brake pipeline 1 can be called the "liquid outlet pipeline”.
  • the brake line 1 In the process of pressurizing the wheels of the car, the brake line 1 is used to provide brake fluid for the wheels of the car, so as to provide braking force for the wheels of the car. At this time, the brake line 1 can be called "fluid inlet”. Pipeline”.
  • the involved "liquid inlet valve”, “liquid outlet valve” and “pressure equalizing valve” are only distinguished based on the function of the control valve in the brake system.
  • the control valve used to control the connection or disconnection of the liquid inlet pipe can be referred to as the “liquid inlet valve” or the “pressurizing valve”.
  • the controller used to control the connection or disconnection of the liquid return line can be called a “liquid outlet valve” or a “relief valve”.
  • the control valve used to isolate the two-stage brake subsystem may be referred to as an "isolation valve".
  • the above-mentioned control valve may be a valve commonly used in an existing brake system, for example, a solenoid valve, etc., which is not specifically limited in the embodiment of the present application.
  • connection port between the control valve and the brake pipeline can be represented by the first end and the second end.
  • the direction of flow is not limited.
  • the brake fluid can flow from the first end of the control valve to the second end of the control valve, or when the control valve is in the off state, the brake fluid can flow from the control valve.
  • the second end flows to the first end of the control valve.
  • first brake line 110 is involved.
  • second brake line 120 is involved.
  • third brake line 130 is involved.
  • fourth brake pipelines, etc. can be understood as one or more sections of brake pipelines that realize a certain function.
  • the first liquid inlet pipeline 130 is a multi-section brake pipeline for connecting the master brake cylinder 3 and the wheel brake cylinder 151 of the first group of wheels.
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Regulating Braking Force (AREA)
  • Braking Arrangements (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

一种液压调节装置、液压调节单元、制动系统及控制方法,其中,将第一液压腔(16)的出液管路分段配置在推杆支撑部(14)以及推杆(13)上,这样,当活塞(12)位于活塞行程的内止点时,位于推杆支撑部(14)的第一液压调节口(14a)与位于推杆(13)的第二液压调节口(13a)连通,当活塞(12)位于活塞行程中除内止点之外的位置时,第一液压调节口(14a)与第二液压调节口(13a)不连通,避免了传统的液压调节装置中需要专门为第一液压腔(16)配置控制阀,以控制第一液压腔(16)对应的出液管路的通断。

Description

液压调节装置、液压调节系统、制动系统及控制方法 技术领域
本申请涉及汽车领域,并且更具体地,涉及汽车中制动系统的液压调节装置、液压调节单元、汽车中的制动系统及控制方法。
背景技术
汽车的制动系统是通过对汽车的车轮施加一定的制动力,从而对其进行一定程度的强制制动的系统。制动系统作用是使行驶中的汽车按照驾驶员或者控制器的要求进行强制减速甚至停车,或者使已停驶的汽车在各种道路条件下(例如,在坡道上)稳定驻车,或者使下坡行驶的汽车速度保持稳定。
电液制动系统(Electro-Hydraulic Brake,EHB)作为流行的制动系统通常包含液压调节装置。液压调节装置可以基于车辆的行驶需求增大或减小制动系统中制动液的压力。例如,制动系统工作在线控模式下,当驾驶员踩下制动踏板,液压调节装置可以基于制动踏板的行程,将制动液压入制动管路以为汽车提供制动力。又例如,在自动驾驶模式下,当自动驾驶系统确认需要减速停车时,液压调节装置可以基于控制器的指令,将制动液压入制动管路以为汽车提供制动力。又例如,制动系统工作在线控模式下,当驾驶员松开制动踏板,液压调节装置可以基于制动踏板的行程,将制动液从汽车的制动轮缸中抽至储液装置,以减小汽车的制动力。又例如,在自动驾驶模式下,当自动驾驶系统确认需要加速时,液压调节装置可以基于控制器的指令,将制动液从汽车的制动轮缸中抽至储液装置,以减小汽车的制动力。
目前较为流行的液压调节装置为具有双向增压/减压功能的液压调节装置。液压调节装置中的液压缸被活塞分隔为两个液压腔,且两个液压腔内分别包括一条制动液的流道,以实现制动液的流进或流出。然而,为了复用每个液压腔对应的制动液的流道可以在增压模式下,让制动液从储液装置流入对应的液压腔,在减压模式下,让制动液从对应的液压腔流入储液装置,需要为每个流道配置对应的控制阀,以控制流道中制动液的流向。这种,连接方式使得制动系统中控制阀的数量无法减少,不利于降低制动系统的成本。
发明内容
本申请提供一种液压调节装置、液压调节单元、制动系统及其控制方法,以减少液压调节单元中控制阀的数量,降低液压调节单元的成本。
第一方面,提供一种液压调节装置,包括:液压缸11;活塞12;推杆13;所述推杆13用于推动所述活塞12沿着所述液压缸11的内壁运动形成活塞行程;所述活塞12将所述液压缸11分隔为第一液压腔16和第二液压腔17;所述第一液压腔16的端部设置有推杆支撑部14,所述推杆支撑部14用于支撑所述推杆13,且所述推杆支撑部14上设置有第一液压调节口14a;所述推杆13上设有第二液压调节口13a,所述第二液压调节口13a 的第一端与所述第一液压腔16连通,当所述活塞12位于活塞行程的内止点时,所述第一液压调节口14a与所述第二液压调节口13a的第二端连通,当所述活塞12位于所述活塞行程中除所述内止点之外的位置时,所述第一液压调节口14a与所述第二液压调节口13a的第二端不连通。
在本申请实施例中,将第一液压腔16的出液管路分段配置在推杆支撑部14对应第一液压调节口14a以及推杆13对应第二液压调节口13a上,这样,当活塞12位于活塞行程的内止点时,第一液压调节口14a与第二液压调节口13a的第二端连通,当活塞12位于活塞行程中除内止点之外的位置时,第一液压调节口14a与第二液压调节口13a的第二端不连通,即通过活塞12在活塞行程中的位置控制第一液压调节口14a与第二液压调节口13a的通断状态,避免了传统的液压调节装置中需要专门为第一液压腔16配置控制阀,以通过控制第一液压腔16的出液管路的通断,有利于减少液压调节单元中与液压调节装置配套使用的控制阀的数量,降低液压调节单元中的成本。
需要说明的是,第二液压调节口13a的第一端与所述第一液压腔16连通,可以包括当活塞12位于活塞行程的内止点时,第二液压调节口13a的第一端与所述第一液压腔16连通;或者,当活塞12位于活塞行程中的全部位置时,第二液压调节口13a的第一端都与第一液压腔16连通。
在一种可能的实现方式中,当所述活塞12位于活塞行程的内止点时,所述第一液压腔16内的制动液,通过连通的所述第一液压调节口14a与所述第二液压调节口13a排出所述第一液压腔16。
在本申请实施例中,将第一液压腔16的出液管路分段配置在推杆支撑部14对应第一液压调节口14a以及推杆13对应第二液压调节口13a上,这样,当活塞12位于活塞行程的内止点时,第一液压调节口14a与第二液压调节口13a连通,第一液压腔16内的制动液可以通过连通的第一液压调节口14a以及第二液压调节口13a排出第一液压腔16,有利于减少液压调节单元中控制阀的数量,降低液压调节单元中的成本。
在一种可能的实现方式中,沿所述推杆13的外周设有圆环状或半圆环状的第一导流槽13b,所述第一导流槽13b与所述第二液压调节口13a的第二端连通。相应地,当活塞位于内止点时所述第一导流槽13b与所述第一液压调节口14a连通。
在本申请实施例中,通过在推杆13的外周设置圆环状或半圆环状的第一导流槽13b,在推杆13发生旋转的情况下,活塞12位于内止点,第一液压调节口14a与第二液压调节口13a之间可以通过第一导流槽13b连通,有利于提高液压调节装置的性能。
在一种可能的实现方式中,沿所述推杆支撑部14的内周设有圆环状或半圆环状的第二导流槽13c,所述第二导流槽13c与所述第一液压调节口14a连通,当所述活塞12位于活塞行程的内止点时,且所述第二导流槽13c与所述第二液压调节口13a的第二端连通。
在本申请实施例中,通过在推杆支撑部14的内周设置圆环状或半圆环状的第二导流槽13c,在推杆13发生旋转的情况下,活塞12位于内止点,第一液压调节口14a与第二液压调节口13a之间可以通过第二导流槽13c连通,有利于提高液压调节装置的性能。
在一种可能的实现方式中,所述第二液压调节口13a在所述推杆13上倾斜设置并且贯穿所述推杆13,所述第二液压调节口13a的第一端与所述活塞12之间的距离短于所述第二液压调节口13a的第二端与所述活塞12之间的距离。
在本申请实施例中,通过设置第二液压调节口13a的第一端与活塞12之间的距离短于第二液压调节口13a的第二端与活塞12之间的距离,使得连通的第二液压调节口13a和第一液压调节口14a可以与第一液压腔16连通。
在一种可能的实现方式中,当所述活塞12位于所述内止点时,所述推杆支撑部14与所述第二液压调节口13a间隔设置。
在本申请实施例中,当活塞12位于内止点时,推杆支撑部14与第二液压调节口13a间隔设置,避免推杆支撑部14对第二液压调节口13a的遮挡,有利于方便制动液流进第二液压调节口13a,提高液压调节装置的减压效率。
第二方面,提供一种液压调节单元,包括:液压调节装置10,所述液压调节装置10包括液压缸11、活塞12以及推杆13,其中,所述活塞12将所述液压缸11分隔为第一液压腔16和第二液压腔17;驱动装置15,所述驱动装置15用于驱动推杆13推动活塞12沿着所述液压缸11的内壁运动并形成活塞行程;所述第一液压腔16的端部设置有推杆支撑部14,所述推杆支撑部14用于支撑所述推杆13,且所述推杆支撑部14上设置有第一液压调节口14a,所述第一液压调节口14a与所述液压调节单元的第一出液管路180相连;所述推杆13上设有第二液压调节口13a,所述第二液压调节口13a的第一端与所述第一液压腔16连通;当所述活塞12位于活塞行程的内止点时,所述第一液压调节口14a与所述第二液压调节口13a的第二端连通,所述第一液压腔16中的制动液通过所述第一出液管路180从所述第一液压腔16中排出,当所述活塞12位于所述活塞行程中除所述内止点之外的位置时,所述第一液压调节口14a与所述第二液压调节口13a的第二端不连通。
在本申请实施例中,将第一液压腔16的出液管路分段配置在推杆支撑部14对应第一液压调节口14a以及推杆13对应第二液压调节口13a上,这样,当活塞12位于活塞行程的内止点时,第一液压调节口14a与第二液压调节口13a的第二端连通,当活塞12位于活塞行程中除内止点之外的位置时,第一液压调节口14a与第二液压调节口13a的第二端不连通,即通过活塞12在活塞行程中的位置控制第一液压调节口14a与第二液压调节口13a的通断状态,避免了传统的液压调节装置中需要专门为第一液压腔16配置控制阀,以通过控制第一液压腔16的出液管路的通断,有利于减少液压调节单元中控制阀的数量,降低液压调节单元中的成本。
在一种可能的实现方式中,所述第一液压腔16设置有第三液压调节口11a,所述第一液压腔16通过所述第三液压调节口11a调节所述液压调节单元中的制动管路内制动液的压力;当所述活塞12位于活塞行程的内止点时,所述第一液压调节口14a与所述第二液压调节口13a的第二端连通,所述第三液压调节口11a与所述第二液压调节口13a的第一端连通。
在本申请实施例中,当活塞12位于活塞行程的内止点时,第一液压调节口14a、第二液压调节口13a与第三液压调节口11a连通,第一液压腔16内的制动液可以通过连通的第一液压调节口14a、第三液压调节口11a以及第二液压调节口13a排出第一液压腔16,有利于减少液压调节单元中控制阀的数量,降低液压调节单元中的成本。
在一种可能的实现方式中,沿所述推杆13的外周设有圆环状或半圆环状的第一导流槽13b,所述第一导流槽13b与所述第二液压调节口13a的第二端连通,所述第一导流槽13b与所述第一液压调节口14a连通。
在本申请实施例中,通过在推杆13的外周设置圆环状或半圆环状的第一导流槽13b,在推杆13发生旋转的情况下,活塞12位于内止点,第一液压调节口14a与第二液压调节口13a之间可以通过第一导流槽13b连通,有利于提高液压调节装置的性能。
在一种可能的实现方式中,沿所述推杆支撑部14的内周设有圆环状或半圆环状的第二导流槽13c,所述第二导流槽13c与所述第一液压调节口14a连通,所述第二导流槽13c与所述第二液压调节口13a的第二端连通。
在本申请实施例中,通过在推杆支撑部14的内周设置圆环状或半圆环状的第二导流槽13c,在推杆13发生旋转的情况下,活塞12位于内止点,第一液压调节口14a与第二液压调节口13a之间可以通过第二导流槽13c连通,有利于提高液压调节装置的性能。
在一种可能的实现方式中,所述第二液压调节口13a在所述推杆13上倾斜设置并且贯穿所述推杆13,所述第二液压调节口13a的第一端与所述活塞12之间的距离短于所述第一液压调节口14a的第二端与所述活塞12之间的距离。
在本申请实施例中,通过设置第二液压调节口13a的第一端与活塞12之间的距离短于第二液压调节口13a的第二端与活塞12之间的距离,使得连通的第二液压调节口13a和第一液压调节口14a可以与第一液压腔16连通。
第三方面,提供一种制动系统,所述制动系统包括:液压调节装置10,所述液压调节装置10包括液压缸11、活塞12以及推杆13,其中,所述活塞12将所述液压缸11分隔为第一液压腔16和第二液压腔17;驱动装置15,所述驱动装置15用于驱动所述推杆13推动活塞12沿着所述液压缸11的内壁运动并形成活塞行程,所述活塞12将所述液压缸分隔为第一液压腔16和第二液压腔17;所述第一液压腔16的端部设置有推杆支撑部14,所述推杆支撑部14用于支撑所述推杆13,且所述推杆支撑部14上设置有第一液压调节口14a,所述第一液压调节口14a与所述制动系统的第一出液管路180相连;所述推杆13上设有第二液压调节口13a,所述第二液压调节口13a的第一端与所述第一液压腔16连通;当所述活塞12位于所述活塞行程的内止点时,所述第一液压调节口14a与所述第二液压调节口13a的第二端连通,所述第一液压腔16中的制动液通过所述第一出液管路180从所述第一液压腔16流至储液装置30;当所述活塞12位于所述活塞行程中除所述内止点之外的位置时,所述第一液压调节口14a与所述第二液压调节口13a的第二端不连通。
在本申请实施例中,将第一液压腔16的出液管路分段配置在推杆支撑部14对应第一液压调节口14a以及推杆13对应第二液压调节口13a上,这样,当活塞12位于活塞行程的内止点时,第一液压调节口14a与第二液压调节口13a的第二端连通,当活塞12位于活塞行程中除内止点之外的位置时,第一液压调节口14a与第二液压调节口13a的第二端不连通,即通过活塞12在活塞行程中的位置控制第一液压调节口14a与第二液压调节口13a的通断状态,避免了传统的液压调节装置中需要专门为第一液压腔16配置控制阀,以通过控制第一液压腔16的出液管路的通断,有利于减少液压调节单元中控制阀的数量,降低液压调节单元中的成本。
在一种可能的实现方式中,所述制动系统还包括第三制动管路130,所述第一液压腔16通过所述第三制动管路130与所述制动系统中的制动轮缸311、312相连,当所述活塞12位于所述活塞行程的内止点时,所述制动轮缸311、312中的制动液通过所述第三制动 管路130流至所述第一液压腔16,并通过所述第二液压调节口13a的第二端与所述第一液压调节口14a流至所述储液装置30。
在本申请实施例中,将第一液压腔16的出液管路分段配置在推杆支撑部14对应第一液压调节口14a以及推杆13对应第二液压调节口13a上,这样,当活塞12位于活塞行程的内止点时,制动轮缸311、312中的制动液可以通过第三制动管路130流至第一液压腔16,并通过第二液压调节口13a的第二端与第一液压调节口14a流至储液装置30,有利于减少液压调节单元中控制阀的数量,降低液压调节单元中的成本。
需要说明的是,上述第三制定管路130可以与第二管路60相连,即第一液压腔16通过第三制动管路130、第二管路60与制动系统中的制动轮缸311、312相连。
在一种可能的实现方式中,所述制动系统还包括第一管路60,所述第一液压腔16所述第一管路60与所述第二液压腔17连通,当所述活塞12压缩所述第二液压腔17的容量,以为所述制动系统中的制动轮缸311、312增压时,所述第一液压调节口14a与所述第二液压调节口13a的第二端不连通,所述第二液压腔17中的部分制动液通过所述第一管路60流至所述第二液压腔17,并存储在所述第二液压腔17中。
在本申请实施例中,在基于第二液压腔17的增压过程中,上述第二液压腔17中的部分制动液通过所述第一管路60流至所述第二液压腔17,并存储在所述第二液压腔17中,这样可以减少第二液压腔17和第一液压腔16之间的压力差,有利于减低驱动装置推动活塞所需的功率。
在一种可能的实现方式中,沿所述推杆13的外周设有圆环状或半圆环状的第一导流槽13b,所述第一导流槽13b与所述第二液压调节口13a的第二端连通,所述第一导流槽13b与所述第一液压调节口14a连通。
在本申请实施例中,通过在推杆13的外周设置圆环状或半圆环状的第一导流槽13b,在推杆13发生旋转的情况下,活塞12位于内止点,第一液压调节口14a与第二液压调节口13a之间可以通过第一导流槽13b连通,有利于提高液压调节装置的性能。
在一种可能的实现方式中,沿所述推杆支撑部14的内周设有圆环状或半圆环状的第二导流槽13c,所述第二导流槽13c与所述第一液压调节口14a连通,所述第二导流槽13c与所述第二液压调节口13a的第二端连通。
在本申请实施例中,通过在推杆支撑部14的内周设置圆环状或半圆环状的第二导流槽13c,在推杆13发生旋转的情况下,活塞12位于内止点,第一液压调节口14a与第二液压调节口13a之间可以通过第二导流槽13c连通,有利于提高液压调节装置的性能。
在一种可能的实现方式中,所述第二液压调节口13a在所述推杆13上倾斜设置并且贯穿所述推杆13,所述第二液压调节口13a的第一端与所述活塞12之间的距离短于所述第二液压调节口13a的第二端与所述活塞12之间的距离。
在本申请实施例中,通过设置第二液压调节口13a的第一端与活塞12之间的距离短于第二液压调节口13a的第二端与活塞12之间的距离,使得连通的第二液压调节口13a和第一液压调节口14a可以与第一液压腔16连通。
第四方面,提供一种制动系统的控制方法,所述制动系统包括:液压调节装置10,所述液压调节装置10包括液压缸11、活塞12以及推杆13,其中,所述活塞12将所述液压缸11分隔为第一液压腔16和第二液压腔17;驱动装置15,所述驱动装置15用于驱动 推杆13推动活塞12沿着液压调节装置10中液压缸11的内壁运动并形成活塞行程;所述第一液压腔16的端部设置有推杆支撑部14,所述推杆支撑部14用于支撑所述推杆13,且所述推杆支撑部14上设置有第一液压调节口14a,所述第一液压调节口14a与所述制动系统的第一出液管路180相连;所述推杆13上设有第二液压调节口13a,所述第二液压调节口13a的第一端与所述第一液压腔16连通;当所述活塞12位于活塞行程的内止点时,所述第一液压调节口14a与所述第二液压调节口13a的第二端连通,所述第一液压腔16中的制动液通过所述第一出液管路180从所述第一液压腔16流至储液装置30;当所述活塞12位于所述活塞行程中除所述内止点之外的位置时,所述第一液压调节口14a与所述第二液压调节口13a的第二端不连通;所述方法包括:控制器生成控制指令,所述控制指令用于对所述驱动装置15进行控制;所述控制器向所述驱动装置15发送所述控制指令,通过控制所述驱动装置15以驱动所述推杆13推动所述活塞12沿着所述液压缸11的内壁运动。
在本申请实施例中,将第一液压腔16的出液管路分段配置在推杆支撑部14对应第一液压调节口14a以及推杆13对应第二液压调节口13a上,这样,当活塞12位于活塞行程的内止点时,第一液压调节口14a与第二液压调节口13a的第二端连通,当活塞12位于活塞行程中除内止点之外的位置时,第一液压调节口14a与第二液压调节口13a的第二端不连通,即通过活塞12在活塞行程中的位置控制第一液压调节口14a与第二液压调节口13a的通断状态,避免了传统的液压调节装置中需要专门为第一液压腔16配置控制阀,以通过控制第一液压腔16的出液管路的通断,有利于减少液压调节单元中控制阀的数量,降低液压调节单元中的成本。
在一种可能的实现方式中,所述控制器向所述驱动装置15发送所述控制指令,通过控制所述驱动装置15以驱动所述推杆13推动所述活塞12沿着所述液压缸11的内壁运动,包括:在对所述制动系统进行减压的过程中,所述控制器向所述驱动装置15发送所述控制指令,通过控制所述驱动装置15以驱动所述活塞12移动到所述内止点。
在本申请实施例中,在对制动系统进行减压的过程中,控制活塞12移动至活塞行程的内止点,第一液压调节口14a与第二液压调节口13a连通,以便制动液任然可以通过连通的第一液压调节口14a与第二液压调节口13a排出第一液压腔16,有利于提高制动系统的减压性能。
在一种可能的实现方式中,所述控制器向所述驱动装置15发送所述控制指令,通过控制所述驱动装置15以驱动所述推杆13推动所述活塞12沿着所述液压缸11的内壁运动,包括:在对所述制动系统进行增压的过程中,所述控制器向所述驱动装置15发送所述控制指令,通过控制所述驱动装置15以驱动所述活塞12压缩所述第二液压腔17的容积,以将所述第二液压腔17中的第一部分制动液通过所述制动系统中的第一管路60压入所述制动系统中的制动轮缸,所述第一管路60连通所述第二液压腔17与所述制动轮缸,所述第一部分制动液为所述第二液压腔17中的部分或全部制动液。
在本申请实施例中,控制活塞12压缩第二液压腔17的容积,以将第二液压腔17中的第一部分制动液通过制动系统中的第一管路60压入制动系统中的制动轮缸,即实现正向增压过程。
在一种可能的实现方式中,在对所述制动系统进行增压的过程中,所述活塞12位于 所述活塞行程中除所述内止点之外的位置,所述第一液压调节口14a与所述第二液压调节口13a的第二端不连通。
在本申请实施例中,在对制动系统进行增压的过程中,第一液压调节口14a与第二液压调节口13a的第二端不连通,此时第一液压腔16可以用于存储制动液。
在一种可能的实现方式中,若所述第一部分制动液为所述第二液压腔17中的部分制动液,所述第二液压腔17还包括第二部分制动液,所述控制器向所述驱动装置15发送所述控制指令,通过控制所述驱动装置15以驱动所述推杆13推动所述活塞12沿着所述液压缸11的内壁运动,包括:在对所述制动系统进行增压的过程中,所述控制器向所述驱动装置15发送所述控制指令,通过控制所述驱动装置15以驱动所述推杆13推动所述活塞12压缩所述第二液压腔17的容积,以将所述第二部分制动液通过第三制动管路130压入所述第一液压腔16,并储存在所述第一液压腔16中,所述第三制动管路130连通所述第一液压腔16和所述第二液压腔17。
在本申请实施例中,第二液压腔17中的第二部分制动液可以通过第三制动管路130流至第一液压腔16中,以减少第一液压腔16与第二液压腔17中的压力差,有利于降低驱动装置驱动活塞运动所需的功率。
在一种可能的实现方式中,所述控制器向所述驱动装置15发送所述控制指令,通过控制所述驱动装置15以驱动所述推杆13推动所述活塞12沿着所述液压缸11的内壁运动,包括:在对所述制动系统进行增压的过程中,所述控制器向所述驱动装置15发送所述控制指令,通过控制所述驱动装置15以驱动所述推杆13推动所述活塞12压缩所述第一液压腔16的容积,以将所述第二部分制动液通过所述第三制动管路130压入所述制动系统中的制动轮缸,所述第三制动管路用于连通所述第一液压腔16与所述制动轮缸。
第五方面,提供一种汽车,包括上述第三方面中任意一种可能的实现方式所述的制动系统,所述液压调节单元通过调节所述制动系统中的制动管路内制动液的压力,以控制施加至所述制动系统中制动轮缸的制动力的大小。
第六方面,提供一种控制装置,该控制装置包括处理单元和存储单元,其中存储单元用于存储指令,处理单元执行存储单元所存储的指令,以使控制装置执行第四方面中任一种可能的方法。
可选地,上述控制装置可以是汽车中独立的控制器,也可以是汽车中具有控制功能的芯片。上述处理单元可以是处理器,上述存储单元可以是存储器,其中存储器可以是芯片内的存储单元(例如,寄存器、缓存等),也可以是汽车内位于上述芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
需要说明的是,上述控制器中存储器与处理器耦合。存储器与处理器耦合,可以理解为,存储器位于处理器内部,或者存储器位于处理器外部,从而独立于处理器。
第七方面,提供了一种计算机程序产品,所述计算机程序产品包括:计算机程序代码,当所述计算机程序代码在计算机上运行时,使得计算机执行上述各方面中的方法。
需要说明的是,上述计算机程序代码可以全部或者部分存储在第一存储介质上,其中第一存储介质可以与处理器封装在一起的,也可以与处理器单独封装,本申请实施例对此不作具体限定。
第八方面,提供了一种计算机可读介质,所述计算机可读介质存储有程序代码,当所 述计算机程序代码在计算机上运行时,使得计算机执行上述各方面中的方法。
附图说明
图1是传统的具有双向增压/减压功能的液压调节装置的示意性结构图。
图2是本申请实施例液压调节装置的示意性结构图。
图3是本申请实施例的第一导流槽的结构示意图。
图4是本申请实施例的第二导流槽的示意性结构图。
图5是本申请实施例的液压调节单元的示意性结构图。
图6是本申请实施例的制动系统的示意图。
图7是本申请实施例的制动系统200在正向增压模式下的工作状态示意图。
图8(a)是传统的液压调节装置在正向增压模式下活塞的受力分析示意图。
图8(b)是申请实施例的液压调节装置在正向增压模式下活塞的受力分析示意图。
图9是申请实施例的制动系统200在反向增压模式下的工作状态示意图。
图10是本申请实施例的液压调节装置与传统液压调节装置在增压过程中的压力变化对比图。
图11是本申请实施例的制动系统200在常规减压模式下的工作状态示意图。
图12是本申请实施例的制动系统200在快速减压模式下的工作状态示意图。
图13是本申请实施例的液压调节装置与传统液压调节装置在减压过程中压力变化对比图。
图14是申请实施例的双回路液压调节单元的示意图。
图15是申请另一实施例的双回路液压调节单元的示意图。
图16是申请另一实施例的双回路液压调节单元的示意图。
图17是本申请实施例中储液装置与液压调节装置10的连接方式一的示意图。
图18是本申请实施例中储液装置与液压调节装置10的连接方式二的示意图。
图19是本申请实施例的液压调节单元的示意图。
图20是本申请另一实施例的液压调节单元的示意图。
图21是本申请另一实施例的液压调节单元的示意图。
图22是本申请实施例的控制方法的流程图。
图23是本申请另一实施例的控制方法的流程图。
图24是本申请实施例的控制装置的示意图。
图25是本申请另一实施例的控制器的示意性框图。
具体实施方式
下面将结合附图,对本申请中的技术方案进行描述。
图1是传统的具有双向增压/减压功能的液压调节装置的示意性结构图。图1所示的液压调节装置包括驱动装置15、制动管路20、储液装置30、液压缸11、活塞12、推杆13、第一液压腔16、第二液压腔17、第一控制阀110、第二控制阀120、组成第一流道的接口11a和11d以及组成第二流道的接口11c和11b。
如图1所示,驱动装置15用于驱动推杆13推动活塞12沿着液压缸11的内壁运动, 液压缸11被活塞12分隔为两个液压腔,第一液压腔16以及第二液压腔17。其中,与第一液压腔16相连的第一流道由端口11a和端口11d组成。与第二液压腔17相连的第二流道由端口11c和端口11b组成。
当液压调节装置处于双向增压模式时,第一控制阀110和第二控制阀120处于断开状态,储液装置30中的制动液通过两个单向阀所在的管路,流至第一液压腔16和第二液压腔17。活塞12在驱动装置15的驱动下,沿着液压缸11的内壁从右往左运动,将第二液压腔17中的制动液通过第二流道的端口11b压入制动管路20。活塞12在驱动装置15的驱动下,沿着液压缸11的内壁从左往右运动,将第一液压腔16中的制动液通过第一流道的端口11a压入制动管路20。
当液压调节装置处于双向减压模式时,第一控制阀110和第二控制阀120处于导通状态,两个单向阀所在的管路由于单向阀的存在阻断制动液从液压缸11流至储液装置30。活塞12在驱动装置15的驱动下,沿着液压缸11的内壁从右往左运动,将制动管路20中的制动液通过第二流道的端口11b抽进第二液压腔17,在从第二液压腔17通过第二控制阀120所在的管路抽进储液装置30。活塞12在驱动装置15的驱动下,沿着液压缸11的内壁从左往右运动,将制动管路20中的制动液通过第一流道的端口11a抽进第一液压腔16,在从第一液压腔16通过第一控制阀110所在的管路抽进储液装置30。
由上可知,传统的液压调节装置为了在增压模式和减压模式下,可以复用第一流道和第二流道,需要为每个流道配置一个控制阀以控制每个流道的通断状态。这种,连接方式使得制动系统中控制阀的数量无法减少,不利于降低制动系统的成本。
为了避免上述问题,本申请实施例提供一种新的液压调节装置,即将上述第一流道分段配置在推杆13以及推杆支撑部14上,当推杆13相对于推杆支撑部14的运动时,上述第一流道两段会错开,以使得第一流道处于断开状态,当推杆13相对于推杆支撑部14处于内止点时,上述第一流道两段连通,以使得第一流道处于导通状态。也就是说,通过推杆13相对于推杆支撑部14的位置来实现第一流道的导通或断开,因此,本申请提供的液压调节装置中不再需要为第一流道配置第一控制阀110。即有利于减少制动系统中控制阀的数量,降低了制动系统的成本。
需要说明的是,为了下文方便表述,可以将活塞12向前方移动称为正向移动,将活塞12向后方移动称为反向移动。当通过液压调节装置10对制动系统进行增压操作时,可以将正向移动的增压称为正向增压,将反向移动的增压称为反向增压。下文在对包含该液压调节装置10在内的液压调节单元或者制动系统进行介绍时,将会对该正向增压和反向增压做进一步介绍。
下文结合图2介绍本申请实施例液压调节装置的结构。图2所示的液压调节装置10包括液压缸11、活塞12、推杆13以及推杆支撑部14。其中,推杆13用于推动活塞12沿着液压缸11的内壁运动形成活塞行程,活塞12将液压缸11分隔为第一液压腔16和第二液压腔17;第一液压腔16的端部设置有推杆支撑部14,推杆支撑部14用于支撑推杆13,且推杆支撑部14上设置有第一液压调节口14a;推杆13上设有第二液压调节口13a,第二液压调节口13a的第一端与第一液压腔16连通,当活塞12位于活塞行程的内止点时,第一液压调节口14a与第二液压调节口13a的第二端连通,当活塞12位于活塞行程中除内止点之外的位置时,第一液压调节口14a与第二液压调节口13a的第二端不连通。
上述活塞12可活动的设置于液压缸11内,推杆13的一端伸入液压缸11内并且与活塞12连接,推杆13的另一端穿出液压缸11与驱动装置15传动连接。在驱动装置15的带动下,活塞12能够在液压缸11内做往复运动,以实现对制动系统的增压或者减压(减压)操作。
在活塞12沿着液压缸11的内壁运动的过程中,活塞12距离驱动装置15的驱动轴(例如,曲轴中心)最远的位置称为“外止点”,相应地,活塞12距离驱动装置15的驱动轴(例如,曲轴中心)最进的位置称为“内止点”,而“外止点”和“内止点”之间的距离称为活塞行程。
第一液压腔16和第二液压腔17被活塞12隔开,并且被配置为使得其体积随着活塞12的移动而改变。具体地,当活塞12向前方(图1中向左方向)移动时,第一液压腔16的体积被增大,第二液压腔17的体积被减小。当活塞12向后方(图1中向右方向)移动时,第一液压腔16的体积被减小,第二液压腔17的体积被增大。
第一液压腔16的端部设置有推杆支撑部14,推杆支撑部14用于支撑推杆13,且推杆支撑部14上设置有第一液压调节口14a。
需要说明的是,推杆支撑部14与液压缸11可以一体成型,或者推杆支撑部14与液压缸11还可以是后期组装的,本申请实施例对此不作限定。
可选地,在推杆支撑部14上还设置有密封构件(图中未示出),从而防止制动液从第一液压腔16中通过推杆13和推杆支撑部之间的间隙流出。
推杆13上设有第二液压调节口13a,第二液压调节口13a的第一端与所述第一液压腔16连通。当活塞12位于活塞行程的内止点时,第一液压腔16通过第一液压调节口14a与第二液压调节口13a连通。相反地,当活塞12位于活塞行程中除内止点之外的位置时,第一液压调节口14a与第二液压调节口13a不连通。
上述第一液压腔16通过第一液压调节口14a与第二液压调节口13a连通,可以理解为第一液压腔16中的制动液可以通过连通的第一液压调节口14a与第二液压调节口13a排出第一液压腔16,或者制动液可以通过连通的第一液压调节口14a与第二液压调节口13a进入第一液压腔16。
上述第一液压调节口14a与第二液压调节口13a可以视为上文中与第一液压腔16相连通的第一流道的端口。
在本申请实施例中,将第一液压腔16的出液管路分段配置在推杆支撑部14(对应第一液压调节口14a)以及推杆13(对应第二液压调节口13a)上,这样,当活塞12位于活塞行程的内止点时,第一液压调节口14a与第二液压调节口13a连通,第一液压腔16内的制动液可以通过连通的第一液压调节口14a以及第二液压调节口13a排出第一液压腔16,有利于减少液压调节单元中控制阀的数量,降低液压调节单元中的成本。
可选地,上述第一液压腔16中的制动液可以通过第一液压腔上设置的第三液压调节口11a流进。第三液压调节口11a连通第一液压腔16和制动系统的制动管路,该制动管路可以连通至与汽车车轮的制动轮缸,制动系统的控制器能够通过调节制动管路中的液压来调节施加在车轮上的制动力。
也就是说,在增压过程中,第一液压腔16可以通过第三液压调节口11a将制动液压入该制动管路中,以此来增加施加在车轮上的制动力。在减压过程中,基于制动系统中的 压力差,制动管路中的制动液可以通过第三液压调节口11a流进第一液压腔16中,以此来减少或者取消施加在车轮上的制动力。
可选地,液压缸11上还可以开设有第四液压调节口11b,第四液压调节口11b用于通过管路连通第二液压腔17和制动系统的制动管路。
类似地,第二液压腔17能够通过第四液压调节口11b向该制动管路中排出制动液,对制动管路进行增压操作,以此来增加施加在车轮上的制动力。制动管路中的制动液还能够通过该第四液压调节口11b排入第二液压腔17中,对制动管路进行减压操作,以此来减少或者取消施加在车轮上的制动力。
上述第四液压调节口11b还可以通过制动管路连通第二液压腔17和第一液压腔16。通过以上设置,在液压调节装置10进行正向增压时,第二液压腔17内的制动液的一部分能够排入制动管路中,以对车轮进行制动,其余一部分制动液可以排入第一液压腔16内,从而能够降低第二液压腔17和第一液压腔16之间的压力差,减小驱动装置15的工作负荷,提高电机驱动装置的寿命。
液压缸11上还可以设置有第五液压调节口11c,第五液压调节口11c用于排入储液装置30补充的制动液。
具体地,第五液压调节口11c通过管路与储液装置30相连通,当进行反向增压时,为了降低第二液压腔17和第一液压腔16的压力差,在活塞12向右移动的过程中,可以通过第五液压调节口11c将储液装置30内的制动液及时的补充入第二液压腔17中。
因此,本申请实施例提供的液压调节装置10,通过正向移动或者反向移动,能够实现双向增压,保证增压过程的连续性,提高制动时的舒适性。另一方面,本申请实施例的液压调节装置10能够迅速的生成压力,实现对制动系统的快速建压,减少系统的控制响应时间,满足车辆的控制和安全需求。
可选地,为了便于连通第一液压腔16与第一液压调节口14a,第二液压调节口13a可以在推杆13上倾斜设置并且贯穿推杆13,第二液压调节口13a的进液口(又称第一端)与活塞12之间的距离短于第二液压调节口13a的出液口(又称第二端)与活塞12之间的距离。
上述第二液压调节口13a的进液口与活塞12之间的距离短于第二液压调节口13a的出液口与活塞12之间的距离,可以理解为,第二液压调节口13a与第一液压调节口14a连通的一侧相对第二液压调节口13a与第一液压腔16连通的一侧更靠近活塞12。当然,第二液压调节口13a也可以为U形孔等,本申请对此不做限定。
通常为了避免活塞12位于内止点时,推杆支撑部14对第二液压调节口13a的遮挡,推杆支撑部14可以与第二液压调节口13a间隔设置,或者说,活塞12位于内止点时,推杆支撑部14可以与第二液压调节口13a之间存在一定间隔,以便于第一液压腔16中的制动液可以不被遮挡的进出第二液压调节口13a。当然,推杆支撑部14也可以遮挡部分第二液压调节口13a。本申请实施例对此不作限定。
通常,推杆13在经历长时间工作后可能发生旋转,相应地,设置在推杆13上的第二液压调节口13a也会发生旋转,此时,即使活塞12处于内止点,旋转后的第二液压调节口13a与第一液压调节口14a无法导通。例如,旋转后的第二液压调节口13a的出口可能被推杆支撑部14的内壁封堵,相应地,第一液压调节口14a被推杆13的外壁封堵。
为了避免上述问题,可以沿推杆13的外周设置第一导流槽13b,第一导流槽13b与第二液压调节口13a相连通,第一导流槽13b能够在推杆13发生旋转后,确保第二液压调节口13a与第一液压调节口14a之间保持连通。
可选地,第一导流槽13b可以是沿推杆13的外周的圆环状或半圆环状。当然,第一导流槽13b为沿推杆13的外周设置的半圆环形槽时,有利于减小第一导流槽13b对推杆13机械强度的影响。应理解,上述半圆环的弧长可以根据推杆13能够发生的最大旋转量来确定。
下文以图3所示的第一导流槽为例进行说明。图3是本申请实施例的第一导流槽的结构示意图。其中,图3(b)是推杆13的主视图,图3(a)是图3(b)中AA视角的截面图。
沿推杆13的外周可以开设第一导流槽13b,该导流槽沿着推杆13的周向设置,第二液压调节口13a与第一导流槽13b相连通,这样,当活塞12被移动到内止点时,第二液压调节口13a将通过第一导流槽13b与第一液压调节口14a相导通,从而能够实现快速减压。
由于第一导流槽13b沿着推杆13的外周设置,并且具有一定的长度,从而使得在推杆13发生旋转时,第一导流槽13b将始终和第一液压调节口14a相连通,而第二液压调节口13a也与第一导流槽13b相连通,即此时仍然能够保证第二液压调节口13a与第一液压调节口14a相互导通。
如图3(a)所示,第一导流槽13b为首尾相连的环形槽。这样,推杆13无论发生多大角度的旋转,将保证第一导流槽13b和第一液压调节口14a始终保持相互连通,且第一导流槽13b和第二液压调节口13a也始终保持相互连通,如此,第二液压调节口13a与第一液压调节口14a始终保持相互导通。
可选地,沿推杆支撑部14的内周设有圆环状或半圆环状的第二导流槽13c,第二导流槽13c与第一液压调节口14a连通。下文结合图4介绍本申请实施例的第二导流槽13c的结构。
图4是本申请实施例的第二导流槽的示意性结构图。如图4所示,第二导流槽13c可以设置于推杆支撑部14的内壁上,并且第二导流槽13b与第一液压调节口14a相连通。
第二导流槽13c可以沿着推杆支撑部14的内周设置,由于推杆支撑部14的内周始终包覆推杆13的外周,这样,即使推杆13发生旋转,位于推杆支撑部14的内周的第二导流槽13c与第二液压调节口13a也能连通,即第二液压调节口13a与第一液压调节口14a连通。
在本申请实施例中,通过将第二导流槽13c设置于推杆支撑部14上有利于减小对推杆13的机械强度的影响,防止推杆13长时间工作之后发生断裂。
前文结合图2至4介绍了本申请实施例的液压调节装置,下文结合图5介绍本申请实施例中包含上述液压调节装置的液压调节单元。需要说明的是,图5与图2至4中功能相同的部件使用的编号相同,为了简洁,下文不再具体赘述。
图5以液压调节装置10为例进行介绍。图4所示的液压调节装置设置于液压调节单元中时,其管路的排布方式与图5所示的管路排布方式相同。为了简洁,下文不再单独赘述。
图5是本申请实施例的液压调节单元的示意性结构图。液压调节单元100包括液压调节装置10、制动管路20、储液装置30、第一出液管路180以及驱动装置15。
液压调节装置10,液压调节装置10包括液压缸11、活塞12以及推杆13,其中,活塞12将液压缸11分隔为第一液压腔16和第二液压腔17;
驱动装置15,驱动装置15用于驱动推杆13推动活塞12沿着液压调节装置10中液压缸11的内壁运动形成活塞行程。
上述驱动装置15可以是电机等其他具有驱动能力的装置。应理解,上述驱动装置15为电机时,由于部分电机输出的是转矩,因此,为了将电机输出的转矩装换为驱动推杆13的直线运动,驱动装置15与推杆13之间还可以通过减速机构,或者其他动力转换机构18相连。上述动力装换机构例如可以包括涡轮蜗杆组件或者滚珠丝杠螺母组件。
第一液压腔16的端部设置有推杆支撑部14,推杆支撑部14用于支撑推杆13,且推杆支撑部14上设置有第一液压调节口14a,第一液压调节口14a与制动系统的第一出液管路180相连。
推杆13上设有第二液压调节口13a,当活塞12位于活塞行程的内止点时,第一液压调节口14a与第二液压调节口13a连通,制动系统中的制动液可以通过连通的第一液压调节口14a与第二液压调节口13a,在第一液压腔16以及第一出液管路180之间流动。
可选地,第一液压调节口14a通过第一出液管路180与储液装置30相连通,这样,制动液可以通过连通的第一液压调节口14a与第二液压调节口13a,从储液装置30流至第一液压腔16,或者制动液可以通过连通的第一液压调节口14a与第二液压调节口13a,从第一液压腔16流至储液装置30。
可选地,液压调节单元100还包括第一管路60、进油管路1 170,管路开关元件61、单向阀171、第三制动管路130。其中,液压缸11上的第四液压调节口11b通过第一管路60与第三制动管路130相连通,其中第三制动管路130的一端与第一液压腔16中的第三液压调节口11a相连,第三制动管路130的另一端与制动回路20相连通。
具体地,液压缸11上的第四液压调节口11b可以通过第一管路60、第三制动管路130连通第二液压腔17和制动管路20。也就是说,第二液压腔17通过第一管路60、第三制动管路130与制动管路20相连通。
此外,液压缸11上的第四液压调节口11b还通过第一管路60、另一部分的第三制动管路130连通第二液压腔17和第一液压腔16。也就是说,第二液压腔17通过第一管路60、第三制动管路130与第一液压腔16相连通。从而使得在进行正向增压时,其中一部分制动液能够流向制动管路20以向车轮提供制动力,而另一部分的制动液能够补充入第一液压腔16内,从而能够降低第二液压腔17和第一液压腔16的压力差,降低驱动装置15的工作负荷,提高驱动装置15的寿命。
可选地,制动系统还可以包括管路开关元件61,管路开关元件61可以设置于第一管路60上,管路开关元件61能够控制第一管路60的通断。当管路开关元件61处于导通状态第一管路60连通。当管路开关元件61处于断开状态,第一管路60断开。
需要说明的是,上述管路开关元件61可以是各种类型的阀门,例如电磁阀、单向阀等。该电磁阀可以为两通阀、三通阀等,本申请对此不做限定。例如,管路开关元件61可以被设置为常开型电磁阀,该常开型电磁阀被配置为在正常状态下是打开的,并且在接 收到来自控制器的关闭信号时进行操作以关闭。也就是说,管路开关元件61的默认初始状态为打开状态。
液压缸11上的第五液压调节口11c通过进油管路1 170连通第二液压腔17和储液装置30,使得储液装置30中的制动液能够通过第五液压调节口11c排入第二液压腔17内,进而使得储液装置30能够通过进油管路1 170向第二液压腔17补充制动液。
可选地,在进油管路1 170上设置有单向阀171,单向阀171被配置为允许制动液从储液装置30到第二液压腔17的方向上流动,同时阻止制动液在相反的方向上流动。
本申请实施例的液压调节单元100具有正向增压、反向增压、常规减压、快速减压等多种工作模式。
当需要对制动管路20进行正向增压操作时(即此时需要增大对车轮的制动力),控制器可以控制管路开关元件61打开,并且控制活塞12正向移动,以挤压第二液压腔17内的制动液,第二液压腔17内的制动液的一部分通过第四液压调节口11b、第一管路60(管路开关元件61)、第三制动管路130之后被排入制动管路20内,从而能够增大制动管路20内制动液的压力,进而增大施加在车轮上的制动力。
此时,第二液压腔17内的制动液的另一部分将通过第四液压调节口11b、第一管路60(管路开关元件61)、第三制动管路130、第三液压调节口11a补充入第一液压腔16内。
当需要对制动管路20进行反向增压操作时,控制器可以控制管路开关元件61关闭,并且控制活塞12反向移动,以挤压第一液压腔16内的制动液,第一液压腔16内的制动液通过第三液压调节口11a、第三制动管路130之后被排入制动管路20内,从而能够增大制动管路20内制动液的压力,进而增大施加在车轮上的制动力。
此时,储液装置30内的制动液将通过进油管路1 170(单向阀171)、第五液压调节口11c补充入第二液压腔17内。
当需要对制动管路20进行常规减压操作时(即此时需要减小或者取消对车轮的制动力),控制器可以控制管路开关元件61打开,并且控制活塞12反向移动,制动管路20内的制动液将依次通过第三制动管路130、第一管路60(管路开关元件61)、第四液压调节口11b进入到第二液压腔17内。
此时,第一液压腔16内的制动液也将依次通过第三液压调节口11a、第三制动管路130、第一管路60(管路开关元件61)、第四液压调节口11b进入到第二液压腔17内。
当需要对制动管路20进行快速减压时,控制器可以控制活塞12移动到内止点,第二减压孔13a与第一减压孔14a之间将被导通,此时制动管路20内的制动液将依次通过第三制动管路130、第三液压调节口11a、第一液压腔16、第二减压孔13a、导流槽13b、第一减压孔14a、减压管路50之后,排入储液装置30内,从而能够减小制动管路20内制动液的压力,进而减小或者取消施加在车轮上的制动力。
此时,管路开关元件61被打开或者关闭均可,本申请对此不做限定。
前文结合附图5介绍了本申请实施例提供的液压调节单元100,下文将结合附图6介绍本申请实施例的制动系统,该制动系统包括前述实施例提供的液压调节单元100。需要说明的是,图5和图6中功能相同的元件使用的编号相同,为了简洁,下文不再具体赘述。
图6是本申请实施例提供的制动系统的示意图。如图6所示,制动系统200包括汽车 车轮的制动轮缸15,以及液压调节单元100。该液压调节单元100的制动管路20与制动轮缸15相连接,以通过制动轮缸15向汽车的车轮311、312提供制动力。
需要说明的是,上述制动管路可以是双回路制动系统中的制动管路,也可以是分布式制动系统中的制动管路,本申请实施例对此不作具体限定。
制动管路20可以与汽车的第一组车轮310的制动轮缸15相连接,以向该第一组车轮310提供制动力。该第一组车轮包括第一车轮311和第二车轮312。制动管路20包括第一支路21和第二支路22,该第一支路21与第一车轮311的制动轮缸15相连接,该第二支路2与第二车轮312的制动轮缸15相连接。
可选地,该第一支路21和第二支路22上还分别设置有控制管路通断的入口阀(图中未示出),从而能够通过控制该入口阀的开闭来实现对单个车轮的制动控制。
可选地,该第一车轮311和第二车轮312可以分别为右前轮和左前轮。或者,该第一车轮311和第二车轮312可以分别为右后轮和左后轮。或者,该第一车轮311和第二车轮312可以分别为右前轮和左后轮,或者,该第一车轮311和第二车轮312可以分别为右后轮和左前轮。
可选地,制动管路20还可以与汽车的第二组车轮(图中未示出)的制动轮缸相连接,以向该第二组车轮提供制动力。
制动系统200还可以包括控制器(图中未示出),控制器用于接收制动系统200中各个传感器的测量信息,并且基于该测量信息,对系统中的驱动装置15、管路开关元件61等电控元件进行控制。
本申请实施例的制动系统200具有正向增压、反向增压、常规减压、快速减压等多种工作模式,下面结合附图对该多种工作模式分别进行阐述。
工作模式一:正向增压
图7是本申请实施例的制动系统200在正向增压模式下的工作状态示意图。如图7所示,当制动系统200的控制器确定需要对第一组车轮310的轮缸15进行正向增压操作时(即此时需要增大对第一组车轮310的制动力),控制器控制驱动装置15通电工作,通过动力装换机构18将驱动装置15的旋转运动转化为直线运动,推动推杆13向左移动,第二减压孔13a和第一减压孔14a之间被断开。控制器控制管路开关元件61打开,使得第一管路60被接通,活塞12在推杆13的向左推力作用下左移,推动第二液压腔17中的制动液进入第一管路60。
推杆13向左移动到某一距离后,第二液压腔17容积变化量ΔV1大于第一液压腔16的容积变化量ΔV2,二者的差值为推杆13表面积与推杆行程的乘积,这就保证了活塞12在向左移动过程中一部分制动液可以由第一管路60进入第一液压腔16,降低两侧的压力差,降低驱动装置15的工作功率,另一部分制动液通过第三制动管路130进入制动管路20,实现增压功能。
具体地,第二液压腔17内的制动液的一部分将通过第四液压调节口11b、第一管路60(管路开关元件61)、第三制动管路130、第三液压调节口11a补充入第一液压腔16内。
另一部分制动液通过第四液压调节口11b、第一管路60(管路开关元件61)、第三制动管路130之后被排入制动管路20内,之后经过第一支路21和第二支路22进入制动 轮缸15内,从而能够增大制动轮缸15内制动液的压力,进而增大施加在第一组车轮310上的制动力。
图8是本申请实施例的液压调节装置与传统的液压调节装置在正向增压模式下活塞的受力分析对比图。其中,图8(a)为传统的液压调节装置在正向增压模式下活塞的受力分析示意图,图8(b)为申请实施例的液压调节装置在正向增压模式下活塞的受力分析示意图。
如图8(a)所示,对于现有的液压调节装置,由于只能实现单向增压,活塞12位于推杆13一侧的侧面并未受到制动液的压力,因此,推杆13所需驱动装置的推力F1=p1s1。其中,p1为液压腔内的压强,s1为活塞12的左侧的受力面积。
同等情况下,本申请提供的液压调节装置10进行正向增压,由于第一液压腔16和第二液压腔17相连通,使得第一液压腔16和第二液压腔17内的压强相同,第一液压腔16内的压强p1等于第二液压腔17内的压强p2。
由于活塞12两侧的液压受力面积不同(右侧的推杆13占据了一定的表面积),使得活塞12正向移动时两侧形成压力下降。具体地,此时活塞12左侧的受力面积为s1,右侧的受力面积为s2(s1>s2),而第一液压腔16和第二液压腔17内的压强均为p1,因此,推杆13所需驱动装置的推力F2=p1(s1-s2)。显然,F2要小于F1。
与现有技术相比,本申请实施例通过将第一液压腔16和第二液压腔17相连通,使得第一液压腔16和第二液压腔17内的压强相同,相对于现有技术中的单向液压调节装置,能够降低活塞12正向移动所需的推力,进而能够降低驱动装置15的工作负荷,提高电机的寿命。若与现有技术采用相同功率的驱动装置,则本申请提供的液压调节装置10在正向增压模式下,活塞12具有更快的运行速度,即建压时间更短。
工作模式二:反向增压
图9是申请实施例的制动系统200在反向增压模式下的工作状态示意图。如图9所示,当制动系统200的控制器确定需要对第一组车轮310的轮缸15进行反向增压操作时,控制器控制驱动装置15通电工作,通过动力装换机构18将驱动装置15的旋转运动转化为直线运动,带动推杆13向右移动,第二减压孔13a和第一减压孔14a之间仍然处于断开状态。控制器控制管路开关元件61关闭,使得第一管路60被断开,活塞12在推杆13的带动下右移,推动第一液压腔16中的制动液进入第三制动管路130。
此时,第一液压腔16内的制动液通过第三液压调节口11a、第三制动管路130之后被排入制动管路20内,之后经过第一支路21和第二支路22进入制动轮缸15内,从而能够增大制动轮缸15内制动液的压力,进而增大施加在第一组车轮310上的制动力。
活塞12在推杆13的带动下右移,储液装置30中的制动液经回油管路70(单向阀171)、第五液压调节口11c进入第二液压腔17,用以弥补由于活塞12右移形成的空间。
本申请实施例提供的液压调节装置10能够实现连续增压。在正向增压完成以后,可以紧接着进行反向增压;在反向增压完成以后,也可以紧接着进行正向增压。
例如,控制器可以首先控制液压调节装置10进行正向增压,此时控制器控制管路开关元件61打开,并且控制活塞12左移,当活塞12移动到外止点时,正向增压结束,控制器可以继续控制液压调节装置10进行反向增压。此时,控制器可以控制管路开关元件61关闭,并且控制活塞右移,直至移动到内止点,反向增压结束。类似地,控制器可以 根据具体制动需求继续控制液压调节装置10进行正向增压,以此实现连续循环增压。
图10是本申请实施例的液压调节装置与传统液压调节装置在增压过程中压力变化的对比图。图10中,纵坐标表示制动管路20中制动液的液压,横坐标表示增压时间。
如图10所示,液压调节装置10在0-t1时间段内对制动管路20进行正向增压,使得制动管路20中制动液的液压由0变为p1,紧接着在t1-t4时间段内继续进行反向增压,使得制动管路20内的增压压力由p1增加为p2,在t4时刻之后,根据具体制动需求,控制器可以控制本申请的液压调节装置继续进行正向增压、反向增压,以实现连续循环增压。
对于传统的液压调节装置,由于移动活塞12需要的推力更大,因此活塞12移动的更慢一些。在0-t3时间段内进行正向增压,使得制动管路20内的增压压力由0变为p2,p2要大于p1。由于传统的液压调节装置活塞12移动的更慢,使得现有的液压调节装置对制动管路20的增压压力由0变为p1需要的时间更长,如图10所示,直至时刻t2才能够将增压压力变为p1,t2时刻相对t1时刻更靠后。
当现有的液压调节装置需要对制动管路20继续进行增压时,要对制动管路20首先进行保压操作,以保证活塞12能够恢复至内止点,以进行下一次增压操作。如图10所示,在t3-t5时间段内对制动管路20进行保压操作,直至时刻t5,活塞12恢复至内止点才能够进行下一次增压操作。
根据图10的内容可知,相比于现有的液压调节装置,本申请实施例提供的液压调节装置10增压过程更加稳定连续,波动较少,能够提高制动时的舒适性;并且正向增压时增压速率更快,总体的增压速率也更快,更加路20内的压力由p2下降至p1,此时活塞12已经移动到内止点位置,无法继续对制动管路20进行减压操作。
本申请实施例提供的液压调节装置10能够进行常规减压和快速减压。在0-t2时间段内对制动管路20进行常规减压,制动管路20内的压力由p2下降至p1,此时活塞12已经移动到内止点位置,可以紧接着对制动管路20进行快速减压,即在t2-t3时间段内,对制动管路20进行快速减压,制动管路20内的压力由p1下降至0。
传统的液压调节装置虽然具有较高的初始减压压力,但是当活塞12处于内止点时,无法继续实现快速减压功能,即制动系统的压力始终维持在p1。与此同时,本申请提供的液压调节装置10当活塞12处于内止点时,基于制动系统中制动液的压力差,仍然可以继续减压。
工作模式三:常规减压模式
图11是本申请实施例的制动系统200在常规减压模式下的工作状态示意图。如图11所示,当制动系统200的控制器确定需要对第一组车轮310的制动轮缸15进行常规减压操作时,控制器控制驱动装置15通电工作,通过动力装换机构18将驱动装置15的旋转运动转化为直线运动,带动推杆13向右移动,第二减压孔13a和第一减压孔14a之间仍然处于断开状态。控制器控制管路开关元件61打开,使得第一管路60被接通,活塞12在推杆13的带动下右移,制动管路20以及第一液压腔16内的制动液将通过第一管路60流入第二液压腔17内。
此时,制动轮缸15内的制动液将依次通过制动管路20、第一管路60、第四液压调节口11b流动至第二液压腔17内,以实现对制动轮缸15的常规减压操作。
第一液压腔16内的制动液也将依次通过第三液压调节口11a、第三制动管路130、第 一管路60、第四液压调节口11b流动至第二液压腔17内。
工作模式四:快速减压模式
本申请实施例提供的液压调节装置10具有常规减压和快速减压两种减压模式,在常规减压结束后可以紧接着对制动管路20进行快速减压。此外,根据具体的制动需求,也可以跳过常规减压而直接进行快速减压,本申请对此不做限定。
图12是本申请实施例的制动系统200在快速减压模式下的工作状态示意图。如图12所示,在常规减压结束后可以紧接着对制动管路20进行快速减压,此时可以继续移动活塞12到内止点位置,第二减压孔13a和第一减压孔14a之间将被导通,进而使得第一液压腔16和储液装置30之间也被导通。控制器可以控制管路开关元件61可以处于断电初始状态(连通或断开均可)。
此时,制动轮缸15内的制动液将依次通过制动管路20、第三制动管路130、第三液压调节口11a、第一液压腔16、第二减压孔13a、导流槽13b、第一减压孔14a、减压管路50之后,排入储液装置30内,以实现对制动轮缸15的快速减压操作。
图13是本申请实施例的液压调节装置与传统液压调节装置减压过程压力变化对比图。需要说明的是,为了增加两种液压调节装置的可对比性,此时制动系统不依靠其他装置或管路进行减压。图13中,纵坐标表示制动管路20内的压力,横坐标表示减压时间。
如图13所示,现有液压调节装置只能进行常规减压,在0-t1时间段内对制动管路20进行常规减压,制动管路20内的压力由p2下降至p1,此时活塞12已经移动到内止点位置,无法继续对制动管路20进行减压操作。
本申请实施例提供的液压调节装置10能够进行常规减压和快速减压。在0-t2时间段内对制动管路20进行常规减压,制动管路20内的压力由p2下降至p1,此时活塞12已经移动到内止点位置,可以紧接着对制动管路20进行快速减压,即在t2-t3时间段内,对制动管路20进行快速减压,制动管路20内的压力由p1下降至0。
传统的液压调节装置虽然具有较高的初始减压压力,但是当活塞12处于内止点时,无法继续实现快速减压功能,即制动系统的压力始终维持在p1。与此同时,本申请提供的液压调节装置10当活塞12处于内止点时,由于储液装置30的压力为0,此时制动系统具有极高的减压速率,更加适用于AEB等紧急工况或ABS/ESP/TCS工作过程中需快速减压需求。
如上文所述,制动回路20可以是双回路制动系统制动的制动回路,下文结合图14至图21以双回路制动系统制动为例,介绍本申请实施例的液压调节装置10在液压调节单元中的制动管路的连接方式及工作原理。
图14是申请实施例的双回路液压调节单元的示意图。图14所示的液压调节单元1400包括液压调节装置10、第一液压腔16、第二液压腔17、第一制动管路110、第二制动管路120、第三制动管路130、第一控制阀111、第二控制阀121。
具有双向增压/减压的液压调节装置10,液压调节装置10包括第一液压腔16和第二液压腔17。
第二液压腔17分别连接至第一制动管路110以及第二制动管路120,第一制动管路110用于为制动系统中的第一组制动轮缸28、29提供制动力,第二制动管路120用于为制动系统中的第二组制动轮缸26、27提供制动力,其中,第一制动管路110中设置有第 一控制阀111,第一控制阀111的通断状态控制第一制动管路110的通断状态,第二制动管路120中设置有第二控制阀121,第二控制阀121的通断状态控制第二制动管路120的通断状态。
上述第一控制阀111的通断状态控制第一制动管路110的通断状态,可以理解为,第一控制阀111处于断开状态时第一制动管路110断开,制动液无法通过第一制动管路110流至第一组制动轮缸28、29。
上述第二控制阀121的通断状态控制第二制动管路120的通断状态,可以理解为,第二控制阀121处于断开状态时第二制动管路120断开,制动液无法通过第二制动管路120流至第二组制动轮缸26、27。
可选地,上述第一组制动轮缸28、29可以包括汽车右前轮的制动轮缸和左前轮的制动轮缸,则上述第二组制动轮缸26、27可以包括汽车右后轮的制动轮缸和左后轮的制动轮缸,此时,上述液压制动单元可以理解为在汽车中呈H型布置。或者,上述第一组制动轮缸28、29可以包括汽车右前轮的制动轮缸和左后轮的制动轮缸,则上述第二组制动轮缸26、27可以包括汽车右后轮的制动轮缸和左前轮的制动轮缸,此时,上述液压制动单元可以理解为在汽车中呈X型布置。
上述第二液压腔17分别连接至第一制动管路110以及第二制动管路120,可以理解为,上述第二液压腔17与第一制动管路110以及第二制动管路120直接相连,即上述第二液压腔17的第四液压调节口11b为第一制动管路110的压力入端口,且第二液压腔17的第四液压调节口11b为第二制动管路120的压力入端口。也就是说,上述第一制动管路110与第二制动管路120相连通。
上述第二液压腔17分别连接至第一制动管路110以及第二制动管路120,还可以理解为,上述第二液压腔17通过一段管路与第一制动管路110以及第二制动管路120相连,即上述第二液压腔17通过第四制动管路140与第一制动管路110以及第二制动管路120相连。如图1所示,第二液压腔17与第四制动管路140的第一端相连,第四制动管路140的第二端与第一制动管路110中第一控制阀111的第一端相连,且第四制动管路140的第二端与第二制动管路120中第二控制阀121的第一端相连。也就是说,上述第一制动管路110与第二制动管路120相连通。
第一液压腔16通过制动系统中的第三制动管路130与第二制动管路120相连,第一液压腔16通过第二制动管路120为第二组制动轮缸26、27提供制动力,当第一控制阀111与第二控制阀121处于连通状态,第三制动管路130通过第二制动管路120与第一制动管路110连通,第一液压腔16通过第一制动管路110为第一组制动轮缸28、29提供制动力。
上述第二控制阀121的第一端为与第四控制管路140相连的端口,则第二控制阀121的第一端为第二控制阀121与第二控制管路120相连的两端中出第一端之外的一端。
如图14所示,第三制动管路130与第二制动管路120之间的接口与第二控制阀121的第二端相连,则第二制动管路120与第三制动管路130相连通,第一控制阀111和第二控制阀121的通断状态,对第二制动管路120与第三制动管路130之间的通断状态没有影响。但是,第一控制阀111和第二控制阀121同时处于导通状态时,第二制动管路120与第一制动管路110连通,也就是说,第三制动管路130可以通过第二制动管路120与第一 制动管路110连通,这样,第一液压腔17可以通过第三制动管路130、第二制动管路120、第一制动管路110为第一组制动轮缸28、29提供制动力。
相应地,当第一控制阀111和第二控制阀121同时处于断开状态时,第二制动管路120与第一制动管路110断开,也就是说,第三制动管路130无法通过第二制动管路120与第一制动管路110连通,这样,第一液压腔17仅可以通过第三制动管路130、第二制动管路120为第二组制动轮缸26、27提供制动力。
在本申请实施例中,第二液压腔17通过设置有第一控制阀111的第一制动管路110为第一组制动轮缸28、29提供制动力,并且通过设置有第二控制阀121的第二制动管路120为第二组制动轮缸26、27提供制动力,有利于实现对第一制动管路110和第二制动管路120进行单独增压,避免了现有技术中,通过带单向阀的第一制动管路110和第二制动管路120为第一组制动轮缸28、29和第二组制动轮缸26、27提供制动力时,无法控制第一制动管路110和第二制动管路120的通断状态。
另一方面,第二液压腔16可以复用设置有第一控制阀111的第一制动管路110以及设置有第二控制阀121的第二制动管路120确定是否为第二组制动轮缸26、27提供制动力,有利于减少制动系统中控制阀的数量,降低制动系统的成本。
在分别通过第一制动管路110和第二制动管路120为第一组制动轮缸28、29和第二组制动轮缸26、27提供制动力时,为了使得两条制动管路中制动液的压力均衡,可以在第一控制阀111的第二端与第二控制阀121的第二端之间设置第三控制阀141,第三控制阀141控制第二控制阀121的第二端与第一控制阀111的第二端之间的通断。这样,当第三控制阀141处于导通状态时,第一控制阀111的第二端与第二控制阀121的第二端导通,两条制动管路之间的压力均衡。当然,如果不考虑两条制动管路之间压力均衡的问题,也可以不设置第三控制阀141,本申请实施例对此不作限定。
需要说明的是,由于第三控制阀141用于平衡第一制动管路110和第二制动管路120之间制动液的压力,因此第三控制阀141又可以称为“均压阀141”。
当上述第三控制阀141处于导通状态后,第一制动管路110中的一部分制动液会通过第三控制阀141流至第二制动管路120,并通过第二控制阀121流至第二液压腔17,导致这部分制动液不能到达制动轮缸,降低制动效率。为了避免这个问题,如图14所示,可以在第一接口与第二接口之间设置第一单向阀122,第一接口为第三制动管路130与第二制动管路120之间的接口,第二接口为第三控制阀141与第二制动管路120之间的接口,第一单向阀122允许制动液从第一接口流至第二接口,且第一单向阀122阻断制动液从第二接口流向第一接口。当然,如果不考虑制动效率的问题,也可以不设置第一单向阀122,本申请实施例对此不作限定。
当第一控制阀111和第二控制阀121处于导通状态时,第一液压腔16可以通过第二制动管路120、第一制动管路110为第一组制动轮缸27、28提供制动力,但是,当制动液通过第二控制阀121从第二制动管路120流向第一控制阀111时,一部分制动液可能会经过第四制动管路140流进第二液压腔17,在一定程度上会降低第一液压腔16为第一组制动轮缸27、28提供制动力的效率。
为了避免上述问题,可以在第四制动管路140上设置第四控制阀142,以通过第四控制阀142的通断控制第四制动管路140的通断。这样,当第一控制阀111和第二控制阀 121处于导通状态时,第四控制阀142处于断开状态,此时,制动液通过第二控制阀121从第二制动管路120流向第一控制阀111时,进入第四制动管路140的制动液会被第四控制阀142阻断,无法流进第二液压腔17。上述制动管路中控制阀的排布方式可以参见图15所示。
如上文所述,第一控制阀111和第二控制阀121的通断只能控制第一液压腔16是否为第一组制动轮缸28、29提供制动力,但是无法控制第一液压腔16是否为第二组制动轮缸26、27提供制动力,因此,还可以在第三制动管路130上设置第五控制阀131,通过第五控制阀131的通断状态控制第三制动管路130的通断。
如图16所示,当第五控制阀131处于导通状态时,第三制动管路130导通,第一液压腔16可以通过第三制动管路130、第二制动管路120为第二组制动轮缸26、27提供制动力。当第五控制阀131处于断开状态时,第三制动管路130断开,第一液压腔16无法通过第三制动管路130、第二制动管路120为第二组制动轮缸26、27提供制动力。
上文结合图14至图16介绍了本申请实施例中液压调节装置与双回路制动系统之间的连接方式,下文结合图17和图18介绍液压调节装置与储液装置30之间的连接方式。应理解,为了便于理解,下文以液压调节装置10为例,介绍液压调节装置10与储液装置30之间的连接方式。
连接方式一,第二液压腔17设置有与储液装置30相连的进液管路1 170,第一液压腔16未设置与储液装置30相连的进液管路。
图17是本申请实施例中储液装置与液压调节装置10的连接方式一的示意图。如图17所示的液压调节单元1700,进液管路1上设置有单向阀171,单向阀171允许进液管路1中的制动液从储液装置30流至第二液压腔17。第一液压腔16中的第一液压调节口(又称“出液口”)14a与第一出液管路180相连。
相应地,当第二控制阀121处于导通状态时,在液压调节装置10的正向增压模式下,第二液压腔17内的制动液一部分流入双回路制动系统,一部分通过第二控制阀121流入第三制动管路130,并通过第三制动管路130流入第一液压腔16,也就是说,在正向增压过程中,第一液压腔16的进液管路为第三制动管路130。
在正向减压过程中,随着活塞12的正向移动,双回路制动系统中的制动液被抽入第二液压腔17,当活塞12移动到内止点后,双回路制动系统中的剩余的制动液通过第一出液管路180流至储液装置30。
连接方式二,第一液压腔16设置有与储液装置30相连的进液管路2 190,第二液压腔17设置有与储液装置30相连的进液管路1 170。
图18是本申请实施例中储液装置与液压调节装置10的连接方式二的示意图。如图18所示液压调节单元1800,进液管路1上设置有单向阀171,单向阀171允许进液管路1中的制动液从储液装置30流至第二液压腔17。第一液压腔16中的第一液压调节口(又称“出液口”)14a与第一出液管路180相连。
进液管路2 190上设置有单向阀191,单向阀191允许进液管路2中的制动液从储液装置30流至第一液压腔16,阻止进液管路2中的制动液从第一液压腔16流至储液装置30。
相应地,当第二控制阀121处于导通状态时,在液压调节装置10的正向增压模式下, 第二液压腔17内的制动液一部分流入双回路制动系统,一部分通过第二控制阀121流入第三制动管路130,并通过第三制动管路130流入第一液压腔16,也就是说,在正向增压过程中,第一液压腔16的进液管路为第三制动管路130。
在正向减压过程中,随着活塞12的正向移动,双回路制动系统中的制动液被抽入第二液压腔17,当活塞12移动到内止点后,双回路制动系统中的剩余的制动液通过第一出液管路180流至储液装置30。
上文结合图2至图18介绍了液压调节装置10与双回路制动管路之间的连接方式,以液压调节装置10与储液装置30之间的连接方式,上文所示的液压调节单元1400至1600可以与液压调节单元1700和1800任意结合。下文分别以液压调节单元1400与液压调节单元1800组合,液压调节单元1500与液压调节单元1800组合,液压调节单元1600与液压调节单元1800组合为例,介绍制动系统中以液压调节机构10提供制动力的机制。
需要说明的是,在下文所示的制动系统中,也可以实现驾驶员通过踩踏制动踏板触发的人工制动模式、驾驶员通过踩踏制动踏板触发的线控制动模式以及自动驾驶场景中的无人驾驶制动模式。其人工制动模式下的制动过程原理与现有的制动系统中的人工制动模式下的制动过程类似,为了简洁,不再具体赘述。下文主要介绍基于线控制动模式以及无人驾驶制动模式中,压力调节装置10的双向增压以及双向减压过程。
下文结合图19介绍液压调节单元1400与液压调节单元1800组合形成的液压调节单元1900。图19是本申请实施例的液压调节单元的示意图。图19所示的液压调节单元1900中主缸增压调节单元910实现的功能即为需要驾驶员参与的人工制动模式以及线控制动模式。
主缸增压调节单元910,驾驶员通过踩踏制动踏板911将制动主缸917中的制动液通过控制阀913所在的制动管路流入踏板感觉模拟器912。在线控制动模式下,控制阀915和控制阀916处于断开状态,相应地,液压调节装置10基于踏板行程传感器918检测到的踏板行程,或者压力传感器914检测到的制动液的压力,为双回路制动系统提供制动力。在人工制动模式下,控制阀915和控制阀916处于连通状态,制动液通过制动管路160和制动管路150为制动轮缸26、27、28、29提供制动力。
压力调节装置10在双向增压模式下,第一控制阀111、第二控制阀121以及第三控制阀141、以及制动轮缸26、27、28、29对应的进液阀920处于导通状态,控制阀915、控制阀916、以及制动轮缸26、27、28、29对应的出液阀930处于断开状态。
在正向增压过程中,当驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的制动液分别通过第一制动管110、第二制动管路120压入制动管路150和制动管路160,并通过制动管路150压入制动轮缸28、29,通过制动管路160压入制动轮缸26、27。
在活塞12压缩第二液压腔17的容积的过程中,一部分制动液还可以通过第三制动管路130进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。另外,储液装置30中的制动液还可以通过进油管路2 190进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。
在反向增压过程中,当驱动装置15驱动活塞12压缩第一液压腔16的容积,以将第一液压腔16中的一部分制动液通过连通的第三制动管130与第二制动管路120压入制动 管路160,以为第二组制动轮缸26、27提供制动力。
第一液压腔16中的另一部分制动液通过连通的第三制动管130与第二制动管路120进入第二制动管路120,并通过第二控制阀121以及第一控制阀111进入第一制动管路110,并通过制动管路150为第一组制动轮缸28、29提供制动力。
在制动液流经第二控制阀121的过程中,会有一部分通过第四制动管路140流入第二液压腔17,以为第二液压腔17进行补液,减小驱动装置15驱动活塞12的驱动力。另外,储液装置30中的制动液还可以通过进油管路2 170进入第二液压腔17,以对第二液压腔17进行补液,减小驱动装置15驱动活塞12的驱动力。
压力调节装置10在双向减压模式下,控制阀915、控制阀916、制动轮缸26、27、28、29对应的进液阀920以及制动轮缸26、27、28、29对应的出液阀930处于断开状态,第一控制阀111、第二控制阀121以及第三控制阀141处于导通状态。
在正向减压过程中,当驱动装置15驱动活塞12压缩第一液压腔16的容积,以将制动轮缸26、27、28、29中的制动液分别通过第一制动管路110抽入第二液压腔17。由于第二制动管路120上设置有第一单向阀122,当制动轮缸26、27、28、29中的制动液抽入第二制动管路120后,会被第一单向阀122阻断,只能通过第三控制阀141所在的制动管路流至第一制动管路110流入第二液压腔17。
当活塞12移动至内止点后,第二液压腔17的容积最大,此时,第二液压腔17无法继续容纳制动液,制动轮缸26、27、28、29中剩余的制动液可以继续通过第一制动管路110流至第二控制阀121,并通过第二控制阀121流至第三制动管路130,再通过第三制动管路130流入第二液压腔16,并通过第一出液管路180流入储液装置30。
在反向减压过程中,当驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二组制动轮缸26、27中的制动液通过第二制动管路120抽入第三控制阀141所在的制动管路,再通过第三控制阀141所在的制动管路流经第一控制阀111、第二控制阀121流入第三制动管路130。第一组制动轮缸28、29中的制动液抽入第一制动管路110,并经过第一控制阀111、第二控制阀121流入第三制动管路130,最终通过第三控制管路130流入第一液压腔16,当活塞12运行至外止点后,第一液压腔16的容积最大,无法继续容纳制动液。此时,可以控制制动轮缸26、27、28、29对应的出液阀930处于导通状态,制动系统中剩余的制动液可以通过制动轮缸26、27、28、29对应的出液阀930通过减压管路流至储液装置30。
压力调节装置10在单回路制动的双向增压模式下,假设制动回路940失效,压力调节装置10需要为制动回路950提供制动力。
此种情况下,第三控制阀141、第二控制阀121、控制阀915、控制阀916、以及制动轮缸26、27、28、29对应的出液阀930处于断开状态,第一控制阀111、制动轮缸28、29对应的出液阀930处于导通状态。
在正向增压过程中,当驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的制动液通过第一制动管110压入制动管路150,并通过制动管路150压入制动轮缸28、29。第二制动管路120中由于第二控制阀121以及第三控制阀141处于断开状态,因此,第二液压腔17中的制动液无法通过第二制动管路120。
在活塞12压缩第二液压腔17的容积的过程中,第一液压腔16的容积增大,一部分 制动液还可以通过第三制动管路130进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。另外,储液装置30中的制动液还可以通过进油管路2 190进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。
压力调节装置10在单回路制动的双向增压模式下,假设制动回路950失效,压力调节装置10需要为制动回路940提供制动力。此种情况下,第三控制阀141、第一控制阀111、控制阀915、控制阀916、以及制动轮缸26、27、28、29对应的出液阀930处于断开状态,第二控制阀121、制动轮缸26、27对应的出液阀930处于导通状态。
在反向增压过程中,驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的制动液通过第二制动管120压入制动管路160,并通过制动管路160压入制动轮缸26、27。第一制动管路110中由于第一控制阀111以及第三控制阀141处于断开状态,因此,第二液压腔17中的制动液无法通过第一制动管路110。
在活塞12压缩第二液压腔17的容积的过程中,第一液压腔16的容积增大,储液装置30中的制动液可以通过进油管路2 190进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。
下文结合图20介绍液压调节单元1500与液压调节单元1800组合形成的液压调节单元2000。图20是本申请另一实施例的液压调节单元的示意图。图20所示的液压调节单元2000中主缸增压调节单元910实现的功能与图19所示的液压调节单元1900实现的功能相同,为了简洁,下文不再赘述。
压力调节装置10在双向增压模式下,可以分为正向增压过程和反向增压过程。
在正向增压过程中,第一控制阀111、第二控制阀121以及第四控制阀142、以及制动轮缸26、27、28、29对应的进液阀1020处于导通状态,控制阀915、控制阀916、以及制动轮缸26、27、28、29对应的出液阀1030处于断开状态。
当驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的制动液分别通过第一制动管110、第二制动管路120压入制动管路150和制动管路160,并通过制动管路150压入制动轮缸28、29,通过制动管路160压入制动轮缸26、27。
在活塞12压缩第二液压腔17的容积的过程中,一部分制动液还可以通过第三制动管路130进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。另外,储液装置30中的制动液还可以通过进油管路2 190进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。
在反向增压过程中,第一控制阀111、第二控制阀121、以及制动轮缸26、27、28、29对应的进液阀1020处于导通状态,控制阀915、控制阀916、制动轮缸26、27、28、29对应的出液阀1030以及第四控制阀142处于断开状态。
当驱动装置15驱动活塞12压缩第一液压腔16的容积,以将第一液压腔16中的一部分制动液通过连通的第三制动管130与第二制动管路120压入制动管路160,以为第二组制动轮缸26、27提供制动力。
第一液压腔16中的另一部分制动液通过连通的第三制动管130与第二制动管路120进入第二制动管路120,并通过第二控制阀121以及第一控制阀111进入第一制动管路110,并通过制动管路150为第一组制动轮缸28、29提供制动力。在制动液流经第二控制 阀121的过程中,由于第四控制阀142处于断开状态,因此会阻断制动液通过第四制动管路140流入第二液压腔17。
另外,储液装置30中的制动液还可以通过进油管路2 170进入第二液压腔17,以对第二液压腔17进行补液,减小驱动装置15驱动活塞12的驱动力。
压力调节装置10在双向减压模式下,可以分为正向增压过程和反向增压过程。
在正向减压过程中,第四控制阀142、控制阀915、控制阀916、制动轮缸26、27、28、29对应的进液阀1020以及制动轮缸26、27、28、29对应的出液阀1030处于断开状态,第一控制阀111以及第二控制阀121处于导通状态。
当驱动装置15驱动活塞12压缩第一液压腔16的容积,以将制动轮缸26、27、28、29中的制动液分别通过第一制动管路110以及第二制动管路120抽入第二液压腔17。
当活塞12移动至内止点后,第二液压腔17的容积最大,此时,第二液压腔17无法继续容纳制动液,第一组制动轮缸28、29中剩余的制动液可以继续通过第一制动管路110流至第二控制阀121,并通过第二控制阀121流至第三制动管路130,再通过第三制动管路130流入第二液压腔16,并通过第一出液管路180流入储液装置30。第二组制动轮缸26、27中剩余的制动液可以继续通过第二制动管路120流至第三制动管路130,并通过第三制动管路130流入第二液压腔16,并通过第一出液管路180流入储液装置30。
在反向减压过程中,当驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二组制动轮缸26、27中的制动液通过第二制动管路120抽入第三制动管路130,并通过第三制动管路130抽进第一液压腔16。第一组制动轮缸28、29中的制动液抽入第一制动管路110,并经过第一控制阀111、第二控制阀121流入第三制动管路130,最终通过第三控制管路130流入第一液压腔16,当活塞12移动至外止点后,第一液压腔16的容积最大,无法继续容纳制动液。此时,可以控制制动轮缸26、27、28、29对应的出液阀1030处于导通状态,制动系统中剩余的制动液可以通过制动轮缸26、27、28、29对应的出液阀1030通过减压管路流至储液装置30。
压力调节装置10在单回路制动的双向增压模式下,假设制动回路1040失效,压力调节装置10需要为制动回路1050提供制动力。
此种情况下,第二控制阀121、控制阀915、控制阀916、以及制动轮缸26、27、28、29对应的出液阀1030处于断开状态,第三控制阀141、第一控制阀111、制动轮缸28、29对应的出液阀1030处于导通状态。
在正向增压过程中,当驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的制动液通过第一制动管110压入制动管路150,并通过制动管路150压入制动轮缸28、29。第二制动管路120中由于第二控制阀121处于断开状态,因此,第二液压腔17中的制动液无法通过第二制动管路120。
在活塞12压缩第二液压腔17的容积的过程中,第一液压腔16的容积增大,储液装置30中的制动液可以通过进油管路2 190进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。
压力调节装置10在单回路制动的双向增压模式下,假设制动回路1050失效,压力调节装置10需要为制动回路1040提供制动力。此种情况下,第一控制阀111、控制阀915、控制阀916、以及制动轮缸26、27、28、29对应的出液阀1030处于断开状态,第四控制 阀142、第二控制阀121、制动轮缸26、27对应的出液阀1030处于导通状态。
驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的制动液通过第二制动管120压入制动管路160,并通过制动管路160压入制动轮缸26、27。第一制动管路110中由于第一控制阀111处于断开状态,因此,第二液压腔17中的制动液无法通过第一制动管路110。
在活塞12压缩第二液压腔17的容积的过程中,第一液压腔16的容积增大,储液装置30中的制动液可以通过进油管路2 190进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。另外,第一液压腔16的容积增大,第二制动管路120中的一部分制动液还可以通过第三制动管路130进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。
下文结合图21介绍液压调节单元1600与液压调节单元1800组合形成的液压调节单元2100。图21是本申请实施例的液压调节单元的示意图。图21所示的液压调节单元2100中主缸增压调节单元1900实现的功能与图19所示的液压调节单元1900实现的功能相同,为了简洁,下文不再赘述。
压力调节装置10在双向增压模式下,可以分为正向增压过程和反向增压过程。
在正向增压过程中,第一控制阀111、第二控制阀121以及第四控制阀142、以及制动轮缸26、27、28、29对应的进液阀1120处于导通状态,第五控制阀131、控制阀915、控制阀916、以及制动轮缸26、27、28、29对应的出液阀1130处于断开状态。
当驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的制动液分别通过第一制动管110、第二制动管路120压入制动管路150和制动管路160,并通过制动管路150压入制动轮缸28、29,通过制动管路160压入制动轮缸26、27。
在活塞12压缩第二液压腔17的容积的过程中,储液装置30中的制动液可以通过进油管路2 190进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。另外,由于第五控制阀131处于断开状态,第二制动管路120中的制动液无法通过第三制动管路130进入第一液压腔16。
在反向增压过程中,第一控制阀111、第二控制阀121、第五控制阀131以及制动轮缸26、27、28、29对应的进液阀1120处于导通状态,控制阀915、控制阀916、制动轮缸26、27、28、29对应的出液阀1130以及第四控制阀142处于断开状态。
当驱动装置15驱动活塞12压缩第一液压腔16的容积,以将第一液压腔16中的一部分制动液通过连通的第三制动管130与第二制动管路120压入制动管路160,以为第二组制动轮缸26、27提供制动力。
第一液压腔16中的另一部分制动液通过连通的第三制动管130与第二制动管路120进入第二制动管路120,并通过第二控制阀121以及第一控制阀111进入第一制动管路110,并通过制动管路150为第一组制动轮缸28、29提供制动力。在制动液流经第二控制阀121的过程中,由于第四控制阀142处于断开状态,因此会阻断制动液通过第四制动管路140流入第二液压腔17。
另外,储液装置30中的制动液还可以通过进油管路2 170进入第二液压腔17,以对第二液压腔17进行补液,减小驱动装置15驱动活塞12的驱动力。
压力调节装置10在双向减压模式下,可以分为正向增压过程和反向增压过程。
在正向减压过程中,第四控制阀142、控制阀915、控制阀916、制动轮缸26、27、28、29对应的进液阀1120以及制动轮缸26、27、28、29对应的出液阀1130处于断开状态,第五控制阀131、第一控制阀111以及第二控制阀121处于导通状态。
当驱动装置15驱动活塞12压缩第一液压腔16的容积,以将制动轮缸26、27、28、29中的制动液分别通过第一制动管路110以及第二制动管路120抽入第二液压腔17。
当活塞12移动至内止点后,第二液压腔17的容积最大,此时,第二液压腔17无法继续容纳制动液,第一组制动轮缸28、29中剩余的制动液可以继续通过第一制动管路110流至第二控制阀121,并通过第二控制阀121流至第三制动管路130,由于第五控制阀131处于导通状态,则制动液可以通过第三制动管路130流入第二液压腔16,并通过第一出液管路180流入储液装置30。第二组制动轮缸26、27中剩余的制动液可以继续通过第二制动管路120流至第三制动管路130,并通过第三制动管路130流入第二液压腔16,并通过第一出液管路180流入储液装置30。
在反向减压过程中,当驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二组制动轮缸26、27中的制动液通过第二制动管路120抽入第三制动管路130,并通过第三制动管路130抽进第一液压腔16。第一组制动轮缸28、29中的制动液抽入第一制动管路110,并经过第一控制阀111、第二控制阀121流入第三制动管路130,最终通过第三控制管路130流入第一液压腔16,当活塞12移动至外止点后,第一液压腔16的容积最大,无法继续容纳制动液。此时,可以控制制动轮缸26、27、28、29对应的出液阀1130处于导通状态,制动系统中剩余的制动液可以通过制动轮缸26、27、28、29对应的出液阀1130通过减压管路流至储液装置30。
压力调节装置10在单回路制动的双向增压模式下,假设制动回路1140失效,压力调节装置10需要为制动回路1150提供制动力。
此种情况下,第二控制阀121、控制阀915、控制阀916、以及制动轮缸26、27、28、29对应的出液阀1130、第五控制阀131处于断开状态,第三控制阀141、第一控制阀111、制动轮缸28、29对应的出液阀1130处于导通状态。
在正向增压过程中,当驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的制动液通过第一制动管110压入制动管路150,并通过制动管路150压入制动轮缸28、29。第二制动管路120中由于第二控制阀121处于断开状态,因此,第二液压腔17中的制动液无法通过第二制动管路120。
在活塞12压缩第二液压腔17的容积的过程中,第一液压腔16的容积增大,储液装置30中的制动液可以通过进油管路2 190进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。
压力调节装置10在单回路制动的双向增压模式下,假设制动回路1150失效,压力调节装置10需要为制动回路1140提供制动力。
此种情况下,第一控制阀111、控制阀915、控制阀916、以及制动轮缸26、27、28、29对应的出液阀1130、第五控制阀131处于断开状态,第四控制阀142、第二控制阀121、制动轮缸26、27对应的出液阀1130处于导通状态。
驱动装置15驱动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的制动液通过第二制动管120压入制动管路160,并通过制动管路160压入制动轮缸26、27。第一 制动管路110中由于第一控制阀111处于断开状态,因此,第二液压腔17中的制动液无法通过第一制动管路110。
在活塞12压缩第二液压腔17的容积的过程中,第一液压腔16的容积增大,储液装置30中的制动液可以通过进油管路2 190进入第一液压腔16,以对第一液压腔16进行补液,减小驱动装置15驱动活塞12的驱动力。另外,由于第五控制阀131处于断开状态,第二制动管路120中制动液无法通过第三制动管路130进入第一液压腔16,有利于提高压力调节装置10为制动回路1140提供制动力的效率。
上文结合图2至图21介绍了本申请实施例提供的液压调节装置、液压调节单元以及制动系统,下文结合图22和图23介绍本申请实施例的控制方法,需要说明的是,本申请实施例的控制方法可以应用于上文介绍的任一种装置,本申请实施例对此不作限定。
图22是本申请实施例的控制方法的流程图。图22所示的方法可以由汽车中的控制器执行。图22所示的方法包括步骤2210和步骤2220。
2210,控制器生成控制指令,控制指令用于对驱动装置15进行控制。
上述控制指令可以包括驱动装置需要提供的转矩等工作参数。
2220,控制器向驱动装置15发送控制指令,通过控制驱动装置15以驱动推杆13推动活塞12沿着液压缸11的内壁运动。
在本申请实施例中,将第一液压腔16的出液管路分段配置在推杆支撑部14对应第一液压调节口14a以及推杆13对应第二液压调节口13a上,这样,当活塞12位于活塞行程的内止点时,第一液压调节口14a与第二液压调节口13a的第二端连通,当活塞12位于活塞行程中除内止点之外的位置时,第一液压调节口14a与第二液压调节口13a的第二端不连通,即通过活塞12在活塞行程中的位置控制第一液压调节口14a与第二液压调节口13a的通断状态,避免了传统的液压调节装置中需要专门为第一液压腔16配置控制阀,以通过控制第一液压腔16的出液管路的通断,有利于减少液压调节单元中控制阀的数量,降低液压调节单元中的成本。
可选地,作为一个实施例,上述步骤2220包括:在对制动系统进行减压的过程中,控制器向驱动装置15发送控制指令,通过控制驱动装置15以驱动推杆13推动活塞12移动到内止点。
在本申请实施例中,在对制动系统进行减压的过程中,控制活塞12移动至活塞行程的内止点,第一液压调节口14a与第二液压调节口13a连通,以便制动液仍然可以通过连通的第一液压调节口14a与第二液压调节口13a排出第一液压腔16,有利于提高制动系统的减压性能。
可选地,作为一个实施例,上述步骤2220包括:在对制动系统进行增压的过程中,控制器向驱动装置15发送控制指令,通过控制驱动装置15以驱动推杆13推动活塞12压缩第二液压腔17的容积,以将第二液压腔17中的第一部分制动液通过制动系统中的第一管路60压入制动系统中的制动轮缸,第一管路60连通第二液压腔17与制动轮缸,第一部分制动液为第二液压腔17中的部分或全部制动液。
在本申请实施例中,控制活塞12压缩第二液压腔17的容积,以将第二液压腔17中的第一部分制动液通过制动系统中的第一管路60压入制动系统中的制动轮缸,即实现正向增压过程。
可选地,作为一个实施例,在对制动系统进行增压的过程中,活塞12位于活塞行程中除内止点之外的位置,第一液压调节口14a与第二液压调节口13a的第二端不连通。
在本申请实施例中,在对制动系统进行增压的过程中,第一液压调节口14a与第二液压调节口13a的第二端不连通,此时第一液压腔16可以用于存储制动液。
可选地,作为一个实施例,若第一部分制动液为第二液压腔17中的部分制动液,第二液压腔17还包括第二部分制动液,上述步骤2220包括:在对制动系统进行增压的过程中,控制器向驱动装置15发送控制指令,通过控制驱动装置15以驱动推杆13推动活塞12压缩第二液压腔17的容积,以将第二部分制动液通过第三制动管路130压入第一液压腔16,并储存在第一液压腔16中,第三制动管路130连通第一液压腔16和第二液压腔17。
在本申请实施例中,第二液压腔17中的第二部分制动液可以通过第三制动管路130流至第一液压腔16中,以减少第一液压腔16与第二液压腔17中的压力差,有利于降低驱动装置驱动活塞运动所需的功率。
可选地,作为一个实施例,上述步骤2220包括:在对制动系统进行增压的过程中,控制器向驱动装置15发送控制指令,通过控制驱动装置15以驱动推杆13推动活塞12压缩第一液压腔16的容积,以将第二部分制动液通过第三制动管路130压入制动系统中的制动轮缸,其中第三制动管路130还用于连通第一液压腔16和制动轮缸。
图23是本申请另一实施例的控制方法的流程图。图23所示的方法可以由汽车中的控制器执行。图23所示的方法包括步骤1410至步骤1470。
步骤1410,控制器检测制动系统的状态。
控制器检测制动系统的状态,并且确定制动系统不存在故障或者失效,能够正常工作。
应理解,本申请实施例对控制器检测制动系统的状态的具体方式不作限定。控制器可以基于制动系统中设置的压力传感器(图中未示出),判断制动系统的状态,例如,可以在制动系统中的第三制动管路130和第一管路60上设置压力传感器,以检测管路内制动液的压力,并基于管路内制动液的压力判断制动系统的状态。又例如,控制器还可以基于制动系统当前的建压时间以及制动系统的平均建压时间,判断制动系统的状态。
步骤1415,控制器确定车辆有制动需求。
应理解,控制器可以基于驾驶员的输入(即通过踏板形成传感器)确定制动系统具有制动需求,控制器还可以基于车辆的路况信息确定制动系统具有制动需求,本申请实施例对此不作限定。在确定车辆具有制动需求以后,进入步骤1420。
步骤1420,控制器控制驱动装置15通电,准备进行增压工作。
步骤1425,控制器确定液压调节装置10是否进行正向增压,若是,则进入步骤1430,若否,则进入步骤1435。
步骤1430,控制器打开管路开关元件61,并且控制活塞12左移。
步骤1435,控制器关闭管路开关元件61,并且控制活塞12右移。
具体地,控制器在确定了车辆具有制动需求以后,可以控制驱动装置15通电,并且根据活塞12当前所处的位置判断是否进行正向增压。若活塞12当前处于内止点,控制器可以确定液压调节装置10进行正向增压,此时进入步骤1430,控制器打开管路开关元件61,并且控制活塞12左移,从而使得液压调节装置10通过第二液压腔17、第一管路60 对制动管路20进行正向增压。
若活塞12当前处于外止点,控制器可以确定液压调节装置10进行反向增压,此时进入步骤1435,控制器关闭管路开关元件61,并且控制活塞12右移,从而使得液压调节装置10通过第一液压腔17、第三制动管路130对制动管路20进行反向增压。
液压调节装置10在进行正向增压或者反向增压完成以后,即在步骤1430或者步骤1435完成以后,进入步骤1440。
步骤1440,控制器确定液压调节装置10是否对制动管路20继续进行增压操作。若是,则返回步骤1425,若否,则进入步骤1445。
具体地,控制器根据制动需求确定是否需要增大对车轮施加的制动力,若是,则确定液压调节装置10需要继续对制动管路20继续进行增压,此时可以回到步骤1425,控制器确定继续对制动管路20进行正向增压或者反向增压。
若控制器根据制动需求确定不需要增大对车轮施加的制动力,则确定液压调节装置10不需要继续进行增压,此时可以进入步骤1445。
图23中虚线框A中的步骤1420至1440能够实现对制动系统的双向连续稳定的增压(建压),能够实现稳定增压,保证增压过程的连续性,提高制动时的舒适性。
步骤1445,控制器确定是否进入保压过程。若是,则进入步骤1450,若否,则进入步骤1455。
步骤1450,控制器控制驱动装置15断电停止工作。
步骤1455,控制器确定系统减压。
具体地,在步骤1445中,控制器根据具体制动需求确定是否进入保压过程。若控制器确定需要维持当前的制动力不变,则可以进入保压过程,此时可以关闭相应的阀门,并且进入步骤1450,此时控制器可以控制驱动装置15断电停止工作。若控制器确定不需要进入保压过程,则此时可以进入步骤1455。
在步骤1455中,控制器确定是否需要对制动系统进行减压操作。
控制器可以根据具体制动需求确定是否减小或者取消施加在车轮上的制动力,若是,则可以对制动系统进行减压操作,此时进行步骤1460至1470。若否,则结束本次操作。
步骤1460,控制器打开管路开关元件61。
步骤1465,控制器控制驱动装置15通电开始工作,并且带动活塞12右移。
步骤1470,控制器通过液压调节装置10对制动系统进行系统减压。
具体地,控制器可以打开管路开关元件61,以使得第一调节第一管路60被接通。此时,控制器控制驱动装置15带动活塞右移,制动管路20中的高压制动液经过第一调节第一管路60进入第二液压腔17内,以对制动系统进行常规减压。之后继续移动活塞12,使得活塞12到达内止点位置,并且固定在内止点不动,此时,第二减压孔13a和第一减压孔14a被接通,制动管路20内的高压制动液通过第三制动管路130、第一液压腔16、减压管路50之后,排入储液装置30内,以实现对制动系统的快速减压。
需要说明的是,上述步骤中的正向增压、反向增压、常规减压以及快速减压可以参见上文的介绍,为了简洁,不再赘述。
上文结合图22和图23介绍了本申请实施例的控制方法,下文结合图24和图25介绍执行上述控制方法的控制装置。需要说明的是,本申请实施例的装置可以应用于上文介绍 的任意一种液压调节单元或者制动系统中,实现上文介绍的任意一种控制方法,为了简洁,在此不再赘述。
图24是本申请实施例的控制装置的示意图,图24所示的控制装置2400包括生成单元2410和发送单元2420。
生成单元2410,用于生成控制指令,控制指令用于对驱动装置15进行控制。
发送单元2420,控制器向驱动装置15发送控制指令,通过控制驱动装置15以驱动推杆13推动活塞12沿着液压缸11的内壁运动。
在可选的实施例中,上述生成单元2410可以为处理器2520,上述发送单元2420可以为通信接口2530,控制器的具体结构如图25所示。
图25是本申请另一实施例的控制器的示意性框图。图25所示的控制器2500可以包括:存储器2510、处理器2520、以及通信接口2530。其中,存储器2510、处理器2520,通信接口2530通过内部连接通路相连,该存储器2510用于存储指令,该处理器2520用于执行该存储器2520存储的指令,以控制通信接口2530接收/发送信息。可选地,存储器2510既可以和处理器2520通过接口耦合,也可以和处理器2520集成在一起。
需要说明的是,上述通信接口2530使用例如但不限于输入/输出接口(input/output interface)一类的装置,来实现控制器2500与其他设备或通信网络之间的通信。
在实现过程中,上述方法的各步骤可以通过处理器2520中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器2510,处理器2520读取存储器2510中的信息,结合其硬件完成上述方法的步骤。为避免重复,这里不再详细描述。
应理解,本申请实施例中,该处理器可以为中央处理单元(central processing unit,CPU),该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解,本申请实施例中,该存储器可以包括只读存储器和随机存取存储器,并向处理器提供指令和数据。处理器的一部分还可以包括非易失性随机存取存储器。例如,处理器还可以存储设备类型的信息。
在本申请实施例中,“第一”、“第二”以及各种数字编号仅为描述方便进行的区分,并不用来限制本申请实施例的范围。例如,区分不同的管路、通孔等。
应理解,本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
应理解,在本申请实施例中,涉及的“出液管路”和“进液管路”可以对应不同的制动管路,也可以对应相同的一条制动管路。“出液管路”和“进液管路”仅仅基于制动管路在制动系统中的功能来区分的。例如,当“出液管路”和“进液管路”对应相同的制动 管路1时,可以理解为,在为汽车的车轮减压的过程中,制动系统中的制动管路1用于将制动轮缸中的制动液输送至储液装置,此时,制动管路1可以称为“出液管路”。在为汽车的车轮增压的过程中,该制动管路1用于为汽车的车轮提供制动液,以为汽车的车轮提供制动力,此时,制动管路1可以称为“进液管路”。
另外,在本申请实施例中,涉及的“进液阀”、“出液阀”以及“均压阀”仅仅基于控制阀在制动系统中的功能来区分的。用于控制进液管路连通或者断开的控制阀可以称为“进液阀”或者“增压阀”。用于控制回液管路连通或者断开的控制器可以称为“出液阀”或者“减压阀”。用于隔离两级制动子系统的控制阀可以称为“隔离阀”。其中,上述控制阀可以是现有的制动系统中常用的阀,例如,电磁阀等,本申请实施例对此不作具体限定。
另外,当控制阀连接至制动管路后,控制阀与制动管路的连接端口可以通过第一端和第二端表示,本申请对制动液在第一端和第二端之间的流向不作限定。例如,当控制阀处于导通状态时,制动液可以从控制阀的第一端流至控制阀的第二端,或者,当控制阀处于断开状态时,制动液可以从控制阀的第二端流至控制阀的第一端。
另外,在本申请实施例中,涉及的“第一制动管路110”、“第二制动管路120”、“第三制动管路130”、“第四进液管路140”、以及其他制动管路等可以理解为实现某一功能的一段或多段制动管路。例如,第一进液管路130为用于连接制动主缸3与第一组车轮的制动轮缸151的多段制动管路。
另外,在本申请实施例中,在结合附图介绍制动系统、汽车等架构时,附图中会示意性地示出每个控制阀可以实现的两种工作状态(断开或连通),并不限定控制阀当前的工作状态如图所示。
应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络 单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(read-only memory,ROM)、随机存取存储器(random access memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖。在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。

Claims (23)

  1. 一种液压调节装置,其特征在于,包括:
    液压缸(11);
    活塞(12);
    推杆(13);其中,
    所述推杆(13)用于推动所述活塞(12)沿着所述液压缸(11)的内壁运动形成活塞行程;
    所述活塞(12)将所述液压缸(11)分隔为第一液压腔(16)和第二液压腔(17);
    所述第一液压腔(16)的端部设置有推杆支撑部(14),所述推杆支撑部(14)用于支撑所述推杆(13),且所述推杆支撑部(14)上设置有第一液压调节口(14a);
    所述推杆(13)上设有第二液压调节口(13a),所述第二液压调节口(13a)的第一端与所述第一液压腔(16)连通;
    当所述活塞(12)位于所述活塞行程的内止点时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端连通;当所述活塞(12)位于所述活塞行程中除所述内止点之外的位置时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端不连通。
  2. 根据权利要求1所述的液压调节装置,其特征在于,当所述活塞(12)位于所述活塞行程的内止点时,所述第一液压腔(16)内的制动液,通过连通的所述第一液压调节口(14a)与所述第二液压调节口(13a)排出所述第一液压腔(16)。
  3. 根据权利要求1或2所述的液压调节装置,其特征在于,沿所述推杆(13)的外周设有圆环状或半圆环状的第一导流槽(13b),所述第一导流槽(13b)与所述第二液压调节口(13a)的第二端连通,当所述活塞(12)位于活塞行程的内止点时,所述第一导流槽(13b)与所述第一液压调节口(14a)连通。
  4. 根据权利要求1或2所述的液压调节装置,其特征在于,沿所述推杆支撑部(14)的内周设有圆环状或半圆环状的第二导流槽(13c),所述第二导流槽(13c)与所述第一液压调节口(14a)连通,当所述活塞(12)位于所述活塞行程的内止点时,所述第二导流槽(13c)与所述第二液压调节口(13a)的第二端连通。
  5. 根据权利要求1-4中任一项所述的液压调节装置,其特征在于,所述第二液压调节口(13a)在所述推杆(13)上倾斜设置并且贯穿所述推杆(13),所述第二液压调节口(13a)的第一端与所述活塞(12)之间的距离短于所述第二液压调节口(13a)的第二端与所述活塞(12)之间的距离。
  6. 根据权利要求1-5中任一项所述的液压调节装置,其特征在于,当所述活塞(12)位于所述内止点时,所述推杆支撑部(14)与所述第二液压调节口(13a)间隔设置。
  7. 一种液压调节单元,其特征在于,包括:
    液压调节装置(10),所述液压调节装置(10)包括液压缸(11)、活塞(12)以及推杆(13),其中,所述活塞(12)将所述液压缸(11)分隔为第一液压腔(16)和第二液压腔(17);
    驱动装置(15),所述驱动装置(15)用于驱动所述推杆(13)推动所述活塞(12)沿着所述液压缸(11)的内壁运动并形成活塞行程;
    所述第一液压腔(16)的端部设置有推杆支撑部(14),所述推杆支撑部(14)用于支撑所述推杆(13),且所述推杆支撑部(14)上设置有第一液压调节口(14a),所述第一液压调节口(14a)与所述液压调节单元的第一出液管路(180)相连;
    所述推杆(13)上设有第二液压调节口(13a),所述第二液压调节口(13a)的第一端与所述第一液压腔(16)连通;
    当所述活塞(12)位于所述活塞行程的内止点时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端连通,所述第一液压腔(16)中的制动液通过所述第一出液管路(180)从所述第一液压腔(16)中排出;当所述活塞(12)位于所述活塞行程中除所述内止点之外的位置时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端不连通。
  8. 根据权利要求7所述的液压调节单元,其特征在于,所述第一液压腔(16)设置有第三液压调节口(11a),所述第一液压腔(16)通过所述第三液压调节口(11a)调节所述液压调节单元中的制动管路内制动液的压力;
    当所述活塞(12)位于所述活塞行程的内止点时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端连通,所述第三液压调节口(11a)与所述第二液压调节口(13a)的第一端连通。
  9. 根据权利要求7或8所述的液压调节单元,其特征在于,沿所述推杆(13)的外周设有圆环状或半圆环状的第一导流槽(13b),所述第一导流槽(13b)与所述第二液压调节口(13a)的第二端连通,所述第一导流槽(13b)与所述第一液压调节口(14a)连通。
  10. 根据权利要求7或8所述的液压调节单元,其特征在于,沿所述推杆支撑部(14)的内周设有圆环状或半圆环状的第二导流槽(13c),所述第二导流槽(13c)与所述第一液压调节口(14a)连通,所述第二导流槽(13c)与所述第二液压调节口(13a)的第二端连通。
  11. 根据权利要求7-10中任一项所述的液压调节单元,其特征在于,所述第二液压调节口(13a)在所述推杆(13)上倾斜设置并且贯穿所述推杆(13),所述第二液压调节口(13a)的第一端与所述活塞(12)之间的距离短于所述第二液压调节口(13a)的第二端与所述活塞(12)之间的距离。
  12. 一种制动系统,其特征在于,包括:
    液压调节装置(10),所述液压调节装置(10)包括液压缸(11)、活塞(12)以及推杆(13),其中,所述活塞(12)将所述液压缸(11)分隔为第一液压腔(16)和第二液压腔(17);
    驱动装置(15),所述驱动装置(15)用于驱动所述推杆(13)推动所述活塞(12)沿着所述液压缸(11)的内壁运动并形成活塞行程;
    所述第一液压腔(16)的端部设置有推杆支撑部(14),所述推杆支撑部(14)用于支撑所述推杆(13),且所述推杆支撑部(14)上设置有第一液压调节口(14a),所述第一液压调节口(14a)与所述制动系统的第一出液管路(180)相连;
    所述推杆(13)上设有第二液压调节口(13a),所述第二液压调节口(13a)的第一端与所述第一液压腔(16)连通;
    当所述活塞(12)位于所述活塞行程的内止点时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端连通,所述第一液压腔(16)中的制动液通过所述第一出液管路(180)从所述第一液压腔(16)流至储液装置(30);当所述活塞(12)位于所述活塞行程中除所述内止点之外的位置时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端不连通。
  13. 根据权利要求12所述的制动系统,其特征在于,所述制动系统还包括第三制动管路(130),所述第一液压腔(16)通过所述第三制动管路(130)与所述制动系统中的制动轮缸(311、312)相连,
    当所述活塞(12)位于所述活塞行程的内止点时,所述制动轮缸(311、312)中的制动液通过所述第三制动管路(130)流至所述第一液压腔(16),并通过所述第二液压调节口(13a)的第二端与所述第一液压调节口(14a)流至所述储液装置(30)。
  14. 根据权利要求12所述的制动系统,其特征在于,所述制动系统还包括第一管路(60),所述第一液压腔(16)所述第一管路(60)与所述第二液压腔(17)连通,
    当所述活塞(12)压缩所述第二液压腔(17)的容量,以为所述制动系统中的制动轮缸(311、312)增压时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端不连通,所述第二液压腔(17)中的部分制动液通过所述第一管路(60)流至所述第二液压腔(17),并存储在所述第二液压腔(17)中。
  15. 根据权利要求12-14中任一项所述的制动系统,其特征在于,沿所述推杆(13)的外周设有圆环状或半圆环状的第一导流槽(13b),所述第一导流槽(13b)与所述第二液压调节口(13a)的第二端连通,所述第一导流槽(13b)与所述第一液压调节口(14a)连通。
  16. 根据权利要求12-14中任一项所述的制动系统,其特征在于,沿所述推杆支撑部(14)的内周设有圆环状或半圆环状的第二导流槽(13c),所述第二导流槽(13c)与所述第一液压调节口(14a)连通,所述第二导流槽(13c)与所述第二液压调节口(13a)的第二端连通。
  17. 根据权利要求12-16中任一项所述的制动系统,其特征在于,所述第二液压调节口(13a)在所述推杆(13)上倾斜设置并且贯穿所述推杆(13),所述第二液压调节口(13a)的第一端与所述活塞(12)之间的距离短于所述第二液压调节口(13a)的第二端与所述活塞(12)之间的距离。
  18. 一种制动系统的控制方法,其特征在于,所述制动系统包括:液压调节装置(10),所述液压调节装置(10)包括液压缸(11)、活塞(12)以及推杆(13),其中,所述活塞(12)将所述液压缸(11)分隔为第一液压腔(16)和第二液压腔(17);
    驱动装置(15),所述驱动装置(15)用于驱动所述推杆(13)推动所述活塞(12)沿着所述液压缸(11)的内壁运动并形成活塞行程;
    所述第一液压腔(16)的端部设置有推杆支撑部(14),所述推杆支撑部(14)用于支撑所述推杆(13),且所述推杆支撑部(14)上设置有第一液压调节口(14a),所述第一液压调节口(14a)与所述制动系统的第一出液管路(180)相连;
    所述推杆(13)上设有第二液压调节口(13a),所述第二液压调节口(13a)的第一端与所述第一液压腔(16)连通;
    当所述活塞(12)位于所述活塞行程的内止点时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端连通,所述第一液压腔(16)中的制动液通过所述第一出液管路(180)从所述第一液压腔(16)流至储液装置(30);当所述活塞(12)位于所述活塞行程中除所述内止点之外的位置时,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端不连通;
    所述方法包括:
    控制器生成控制指令,所述控制指令用于对所述驱动装置(15)进行控制;
    所述控制器向所述驱动装置(15)发送所述控制指令,通过控制所述驱动装置(15)以驱动所述推杆(13)推动所述活塞(12)沿着所述液压缸(11)的内壁运动。
  19. 如权利要求18所述的方法,其特征在于,所述控制器向所述驱动装置(15)发送所述控制指令,通过控制所述驱动装置(15)以驱动所述推杆(13)推动所述活塞(12)沿着所述液压缸(11)的内壁运动,包括:
    在对所述制动系统进行减压的过程中,所述控制器向所述驱动装置(15)发送所述控制指令,通过控制所述驱动装置(15)以驱动所述推杆(13)推动所述活塞(12)移动到所述内止点。
  20. 如权利要求18或19所述的方法,其特征在于,所述控制器向所述驱动装置(15)发送所述控制指令,通过控制所述驱动装置(15)以驱动所述推杆(13)推动所述活塞(12)沿着所述液压缸(11)的内壁运动,包括:
    在对所述制动系统进行增压的过程中,所述控制器向所述驱动装置(15)发送所述控制指令,通过控制所述驱动装置(15)以驱动所述推杆(13)推动所述活塞(12)压缩所述第二液压腔(17)的容积,以将所述第二液压腔(17)中的第一部分制动液通过所述制动系统中的第一管路(60)压入所述制动系统中的制动轮缸,所述第一管路(60)连通所述第二液压腔(17)与所述制动轮缸,所述第一部分制动液为所述第二液压腔(17)中的部分或全部制动液。
  21. 如权利要求20所述的方法,其特征在于,在对所述制动系统进行增压的过程中,所述活塞(12)位于所述活塞行程中除所述内止点之外的位置,所述第一液压调节口(14a)与所述第二液压调节口(13a)的第二端不连通。
  22. 如权利要求21所述的方法,其特征在于,若所述第一部分制动液为所述第二液压腔(17)中的部分制动液,所述第二液压腔(17)还包括第二部分制动液,
    所述控制器向所述驱动装置(15)发送所述控制指令,通过控制所述驱动装置(15)以驱动所述推杆(13)推动所述活塞(12)沿着所述液压缸(11)的内壁运动,包括:
    在对所述制动系统进行增压的过程中,所述控制器向所述驱动装置(15)发送所述控制指令,通过控制所述驱动装置(15)以驱动所述推杆(13)推动所述活塞(12)压缩所述第二液压腔(17)的容积,以将所述第二部分制动液通过第三制动管路(130)压入所述第一液压腔(16),并储存在所述第一液压腔(16)中,所述第三制动管路(130)连通所述第一液压腔(16)和所述第二液压腔(17)。
  23. 如权利要求22所述的方法,其特征在于,所述控制器向所述驱动装置(15)发 送所述控制指令,通过控制所述驱动装置(15)以驱动所述推杆(13)推动所述活塞(12)沿着所述液压缸(11)的内壁运动,包括:
    在对所述制动系统进行增压的过程中,所述控制器向所述驱动装置(15)发送所述控制指令,通过控制所述驱动装置(15)以驱动所述推杆(13)推动所述活塞(12)压缩所述第一液压腔(16)的容积,以将所述第二部分制动液通过所述第三制动管路(130)压入所述制动系统中的制动轮缸,所述第三制动管路(130)连通所述第一液压腔(16)与所述制动轮缸。
PCT/CN2020/090091 2020-05-13 2020-05-13 液压调节装置、液压调节系统、制动系统及控制方法 WO2021226889A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024056648A1 (de) * 2022-09-14 2024-03-21 Heinz Leiber Bremssystem sowie ventil mit zuschaltbarer haltekraft

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2931769A1 (fr) * 2008-05-28 2009-12-04 Peugeot Citroen Automobiles Sa Systeme de feinage permettant la mise en oeuvre d'un procede de controle de stabilite et de trajectoire dans un vehicule muni d'elements de frein motorises.
DE102012221146A1 (de) * 2012-11-20 2014-05-22 Continental Teves Ag & Co. Ohg Bremsanlage für Kraftfahrzeuge
CN206615206U (zh) * 2017-04-01 2017-11-07 吉林大学 制动双腔副主缸双电机线控液压制动系统
CN110758365A (zh) * 2019-12-09 2020-02-07 宁泓(深圳)汽车科技有限公司 用于车辆的集成式线控制动系统

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040601A1 (de) * 1980-10-29 1982-05-27 Alfred Teves Gmbh, 6000 Frankfurt Hydraulische bremsanlage mit einer bremsschlupfregelanlage
CN2518742Y (zh) * 2001-11-29 2002-10-30 韩其顺 汽车辅助制动装置
JP2004155236A (ja) * 2002-11-05 2004-06-03 Advics:Kk 車両用液圧ブレーキ装置
JP3955016B2 (ja) * 2003-12-05 2007-08-08 日信工業株式会社 車両用ブレーキ装置
JP4630070B2 (ja) * 2005-01-17 2011-02-09 本田技研工業株式会社 液圧ブレーキ装置
JP5636357B2 (ja) * 2011-12-22 2014-12-03 日立オートモティブシステムズ株式会社 車両制御装置
CN103303286B (zh) * 2012-03-14 2016-07-13 浙江万向精工有限公司 一种汽车制动装置
CN203078511U (zh) * 2012-12-27 2013-07-24 清华大学 一种汽车线控制动系统
CN203161708U (zh) * 2013-01-21 2013-08-28 三一汽车制造有限公司 一种缓冲液压油缸
JP5892980B2 (ja) * 2013-06-25 2016-03-23 株式会社アドヴィックス 車両用制動装置
CN103465894B (zh) * 2013-09-29 2016-07-06 江苏理工学院 液压制动系统及汽车电液线控制动系统
JP6278236B2 (ja) * 2014-01-29 2018-02-14 株式会社アドヴィックス 車両用制動装置
CN108058615B (zh) * 2016-11-09 2022-02-25 华为技术有限公司 车辆制动能量的回收方法和装置
CN207860163U (zh) * 2018-02-06 2018-09-14 吉林大学 四轮压力独立控制的复合线控制动系统
CN110562225B (zh) * 2018-06-05 2022-01-14 华为技术有限公司 液压制动装置及其控制装置及方法、新能源汽车制动系统
CN208858757U (zh) * 2018-08-22 2019-05-14 浙江锋锐发动机有限公司 发动机曲轴及汽车

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2931769A1 (fr) * 2008-05-28 2009-12-04 Peugeot Citroen Automobiles Sa Systeme de feinage permettant la mise en oeuvre d'un procede de controle de stabilite et de trajectoire dans un vehicule muni d'elements de frein motorises.
DE102012221146A1 (de) * 2012-11-20 2014-05-22 Continental Teves Ag & Co. Ohg Bremsanlage für Kraftfahrzeuge
CN206615206U (zh) * 2017-04-01 2017-11-07 吉林大学 制动双腔副主缸双电机线控液压制动系统
CN110758365A (zh) * 2019-12-09 2020-02-07 宁泓(深圳)汽车科技有限公司 用于车辆的集成式线控制动系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4147929A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024056648A1 (de) * 2022-09-14 2024-03-21 Heinz Leiber Bremssystem sowie ventil mit zuschaltbarer haltekraft

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