CN111873969B - Electronic hydraulic line control brake system with independent double loops - Google Patents
Electronic hydraulic line control brake system with independent double loops Download PDFInfo
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- CN111873969B CN111873969B CN202010643369.XA CN202010643369A CN111873969B CN 111873969 B CN111873969 B CN 111873969B CN 202010643369 A CN202010643369 A CN 202010643369A CN 111873969 B CN111873969 B CN 111873969B
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- storage tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T13/00—Transmitting 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
- B60T13/10—Transmitting 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
- B60T13/12—Transmitting 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
- B60T13/14—Transmitting 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
- B60T13/142—Systems with master cylinder
- B60T13/145—Master cylinder integrated or hydraulically coupled with booster
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T13/00—Transmitting 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
- B60T13/10—Transmitting 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
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/70—Electrical control in fluid-pressure brake systems by fluid-controlled switches
Abstract
The invention discloses an electronic hydraulic line control brake system with independent double loops, which comprises a brake boosting module, a boosting power source module, a basic brake module and a hydraulic control module with double loops, wherein the hydraulic control module comprises two hydraulic servo boosters which are connected with the brake boosting module and the boosting power source module through pipelines and can establish brake fluid pressure and two hydraulic control units which are respectively connected with the two hydraulic servo boosters and are used for adjusting the brake fluid pressure output by the hydraulic servo boosters and transmitting the brake fluid to the basic brake module through pipelines. The system adopts an integrated design, and the master cylinder, the booster and the hydraulic control unit are integrated into a whole, so that the installation space and the assembly weight are reduced; the system adopts a double-independent loop design, so that the braking safety is enhanced, and the failure condition of a single system is avoided.
Description
Technical Field
The invention relates to the technical field of automobile brake systems, in particular to an electronic hydraulic line control brake system with independent double loops.
Background
With the development of electric vehicles and automatic driving technologies, vehicles have put new demands on braking systems. The traditional braking product relying on a vacuum booster needs a vacuum pump depending on an engine for boosting, while a hybrid power or electric automobile cannot use the traditional vacuum pump due to no engine or the fact that the engine does not work continuously, and the traditional solution is to configure an electric vacuum pump for boosting, so that the weight and the complexity of a braking system are increased. With the development of the automatic driving technology, higher requirements are put on the braking safety indexes of the automobile, and the automobile is required to be provided with functions of active braking, emergency braking auxiliary function, adaptive cruise and the like. Emergency brake assistance systems have been listed as a regulatory term in the european union, requiring that all new vehicles must be configured with this function. With the development of automobile technology and the increasing demand for safety performance, there is an urgent need for technical innovation of brake systems.
The development of the brake-by-wire system technology finds a breakthrough for solving the problems. An electric control hydraulic brake system (EHB) is used as a brake-by-wire technology, is rapidly developed in recent years, and is used as a hydraulic power-assisted servo device which mainly utilizes a motor to drive an energy storage device, controls a slide valve to control the output of pressure in the energy storage device and pushes a master cylinder to realize the braking function of the whole vehicle. The electronic hydraulic braking system is rapidly developed along with the popularization of new energy automobiles, and the technical scheme mainly comprises the following two types: 1. the motor drives the hydraulic pump to pressurize the high-pressure energy accumulator, and the pressure output in the energy accumulator is controlled by controlling the slide valve mechanism to push the main cylinder to build pressure for braking. The scheme has no effective failure backup mode, the motor is easy to protect after working for a long time, and once hydraulic pressure cannot be established, great potential safety hazards exist in driving; the scheme can realize linear control, but also has the defect that the brake hydraulic pressure of a front axle and a rear axle cannot be accurately distributed, has great influence on a single-axle driven automobile, and has the problem of brake safety caused by motor failure in addition.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide an electronic hydraulic brake-by-wire system with independent double loops, which can effectively avoid the failure of a motor.
In order to achieve the purpose, the electronic hydraulic line control brake system with the independent double loops comprises a brake boosting module, a boosting power source module and a basic brake module, and is characterized in that: the hydraulic control module comprises two hydraulic servo boosters which are connected with the brake boosting module and the boosting power source module through pipelines and can establish brake fluid pressure, and two hydraulic control units which are respectively connected with the two hydraulic servo boosters, are used for adjusting the brake fluid pressure output by the hydraulic servo boosters and can convey the brake fluid to the basic brake module through pipelines.
Furthermore, the hydraulic control module comprises a first hydraulic control module consisting of a first hydraulic servo booster and a first hydraulic control unit and a second hydraulic control module consisting of a second hydraulic servo booster and a second hydraulic control unit.
Further, the brake boosting module comprises a master cylinder with front and rear chambers, and a piston rod of the master cylinder is connected with a brake pedal.
Furthermore, the front chamber and the rear chamber of the brake master cylinder are connected with brake liquid storage tanks, and the brake liquid storage tanks are connected with the power-assisted power source module, the basic brake module and the hydraulic control module.
Furthermore, the boosting power source module comprises a boosting hydraulic pump, an oil inlet of the boosting hydraulic pump is connected with the brake liquid storage tank through a pipeline, an oil outlet of the boosting hydraulic pump is connected with a first energy accumulator and a second energy accumulator through pipelines, the first energy accumulator is connected with a liquid inlet of the first hydraulic servo booster through a pipeline, the second energy accumulator is connected with a liquid inlet of the second hydraulic servo booster through a pipeline, and the boosting hydraulic pump is connected with a driving device for driving oil pumping of the boosting hydraulic pump.
Further, the basic brake module comprises an ABS controller assembly and a wheel cylinder; braking liquid storage pot with communicate through liquid storage pot hydraulic pressure oil circuit between the ABS controller assembly, liquid storage pot hydraulic pressure oil circuit include two with the branch pipe that ABS controller assembly is connected, divide the pipe include with the first liquid storage pot oil circuit of first hydraulic control module intercommunication divide the pipe and with the second liquid storage pot oil circuit of second hydraulic control module intercommunication divides the pipe.
Furthermore, a pipeline is connected between the brake liquid storage tank and a liquid inlet of the first hydraulic servo booster, and the first hydraulic control unit comprises a first servo booster assembly pressure increasing valve connected with a liquid outlet of the first hydraulic servo booster, a first hydraulic control module pressure reducing valve connected with the first servo booster assembly pressure increasing valve, and a first branch pipe pressure reducing valve connected with a branch pipe of an oil path of the first liquid storage tank; and a pipeline is connected between the pressure increasing valve of the first servo booster assembly and the branch pipe of the oil way of the first liquid storage tank.
Furthermore, a pipeline is connected between the brake liquid storage tank and a liquid inlet of the second hydraulic servo booster, and the second hydraulic control unit comprises a second servo booster assembly pressure increasing valve connected with a liquid outlet of the second hydraulic servo booster, a second hydraulic control module pressure reducing valve connected with the second servo booster assembly pressure increasing valve and a second branch pipe pressure reducing valve connected with a branch pipe of an oil path of the second liquid storage tank; and a pipeline is connected between the pressure increasing valve of the second servo booster assembly and the branch pipe of the oil path of the second liquid storage tank.
Furthermore, the first hydraulic control unit further comprises a front cavity pressure sensor connected to a front cavity of the master brake pump, a front loop booster output pressure sensor connected to an oil outlet of the first hydraulic servo booster, a front loop accumulator pressure sensor connected with the first accumulator, and a front loop wheel cylinder pressure sensor connected to a branch pipe of an oil path of the first liquid storage tank.
Furthermore, the second hydraulic control unit further comprises a rear cavity pressure sensor connected to the rear cavity of the master cylinder, a rear loop booster output pressure sensor connected to the oil outlet of the second hydraulic servo booster, a rear loop accumulator pressure sensor connected with the second accumulator, and a rear loop wheel cylinder pressure sensor connected to the oil branch pipe of the second liquid storage tank.
The invention has the beneficial effects that: 1. the system adopts an integrated design, and the master cylinder, the booster and the hydraulic control unit are integrated into a whole, so that the installation space and the assembly weight are reduced; 2. the system adopts a double-independent loop design, so that the braking safety is enhanced, and the failure condition of a single system is avoided; the hydraulic control unit is adopted to realize the energy recovery function in a decoupling mode while realizing conventional braking, emergency auxiliary braking and active braking; 3. the system can cover the matching of brake systems of different vehicle types from three tons to ten tons through a double-power-source mode, is adaptive to hydraulic brake systems with different liquid demands, and can be expanded to multi-axle vehicles.
Drawings
FIG. 1 is a schematic diagram of an electro-hydraulic brake-by-wire system with independent dual circuits according to the present invention;
wherein, 1, braking the liquid storage tank; 2-brake master cylinder; 3-brake pedal; 4-a first hydraulic servo booster; 5-a second hydraulic servo booster; 6-front chamber pressure sensor; 7-rear chamber pressure sensor; 8-front loop booster output pressure sensor; 9-rear loop booster output pressure sensor; 10-front loop linear pressure relief valve; 11-rear loop linear pressure relief valve; 12-a first servo booster assembly boost valve; 13-a second hydraulic control module pressure charging valve; 14-branch oil way of the first liquid storage tank; 15-branch oil way of the second liquid storage tank; 16-a first hydraulic control module pressure reducing valve; 17-a second hydraulic control module pressure reducing valve; 18-front loop accumulator pressure sensor; 19-rear loop accumulator pressure sensor; 20-front loop wheel cylinder pressure sensor; 21-rear loop wheel cylinder pressure sensor; 22-ABS controller assembly; 23-left front wheel cylinder; 24-right front wheel cylinder; 25-left rear wheel cylinder; 26-right rear wheel cylinder; 27-a servo motor; 28 — a first accumulator; 29-a second accumulator; 30-booster hydraulic pump.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
The electronic hydraulic line control brake system with independent double loops as shown in fig. 1 comprises a brake boosting module, a boosting power source module, a basic brake module and a hydraulic control module with double loops, wherein the hydraulic control module comprises two hydraulic servo boosters which are connected with the brake boosting module and the boosting power source module through pipelines and can establish brake fluid pressure and two hydraulic control units which are respectively connected with the two hydraulic servo boosters and are used for adjusting the brake fluid pressure output by the hydraulic servo boosters and conveying the brake fluid to the basic brake module through pipelines.
The brake boosting module comprises a master cylinder 2 with a front chamber and a rear chamber, and a brake pedal 3 is connected to a piston rod of the master cylinder 2.
The front chamber and the rear chamber of the master cylinder 2 are connected with a brake liquid storage tank 1, and the brake liquid storage tank 1 is connected with a power-assisted power source module, a basic brake module and a hydraulic control module.
The boosting power source module comprises a boosting hydraulic pump 30, an oil inlet of the boosting hydraulic pump 30 is connected with a brake liquid storage tank 1 through a pipeline, an oil outlet of the boosting hydraulic pump 30 is connected with a first energy storage device 28 and a second energy storage device 29 through pipelines, the first energy storage device 28 is connected with a liquid inlet of a first hydraulic servo booster 4 through a pipeline, the second energy storage device 29 is connected with a liquid inlet of a second hydraulic servo booster 5 through a pipeline, and the boosting hydraulic pump 30 is connected with a servo motor 27 for driving oil pumping of the boosting hydraulic pump 30.
The basic brake module comprises an ABS controller assembly 22 and a wheel cylinder; the braking liquid storage tank 1 is communicated with the ABS controller assembly 22 through a liquid storage tank hydraulic oil path, the liquid storage tank hydraulic oil path comprises two branch pipes connected with the ABS controller assembly 22, and each branch pipe comprises a first liquid storage tank oil path branch pipe 14 communicated with the first hydraulic control module and a second liquid storage tank oil path branch pipe 15 communicated with the second hydraulic control module.
The hydraulic control module comprises a first hydraulic control module consisting of a first hydraulic servo booster 4 and a first hydraulic control unit and a second hydraulic control module consisting of a second hydraulic servo booster 5 and a second hydraulic control unit.
A pipeline is connected between the brake liquid storage tank 1 and the other liquid inlet of the first hydraulic servo booster 4, and the first hydraulic control unit comprises a first servo booster assembly pressure increasing valve 12 connected with the liquid outlet of the first hydraulic servo booster 4, a first hydraulic control module pressure reducing valve 16 connected with the first servo booster assembly pressure increasing valve 12 and a first branch pipe pressure reducing valve 10 connected with a first liquid storage tank oil path branch pipe 14; a pipeline is connected between the pressure increasing valve 12 of the first servo booster assembly and the oil path branch pipe 14 of the first liquid storage tank. The first hydraulic control unit further comprises a front cavity pressure sensor 6 connected to a front cavity of the master cylinder 2, a front loop booster output pressure sensor 8 connected to an oil outlet of the first hydraulic servo booster 4, a front loop accumulator pressure sensor 18 connected with a first accumulator 28 and a front loop wheel cylinder pressure sensor 20 connected to a first liquid storage tank oil way branch pipe 14.
A pipeline is connected between the brake liquid storage tank 1 and the other liquid inlet of the second hydraulic servo booster 5, and the second hydraulic control unit comprises a second servo booster assembly pressure increasing valve 13 connected with the liquid outlet of the second hydraulic servo booster 5, a second hydraulic control module pressure reducing valve 17 connected with the second servo booster assembly pressure increasing valve 13 and a second branch pipe pressure reducing valve 11 connected with a second liquid storage tank oil way branch pipe 15; a pipeline is connected between the pressure increasing valve 13 of the second servo booster assembly and the oil path branch pipe 15 of the second liquid storage tank. The second hydraulic control unit further comprises a rear cavity pressure sensor 7 connected to a rear cavity of the master cylinder 2, a rear loop booster output pressure sensor 9 connected to an oil outlet of the second hydraulic servo booster 5, a rear loop accumulator pressure sensor 19 connected with a second energy accumulator 29 and a rear loop wheel cylinder pressure sensor 21 connected to a second liquid storage tank oil way branch pipe 15.
In the invention, the working process of the system under different working modes is as follows:
because the system is an independent double-circuit system, the following working principle is mainly explained by taking a front circuit (namely, a first hydraulic control module) as an example, and the rear circuit (namely, a second hydraulic control module) has the same principle as the front circuit:
first, normal braking mode: when the system is in a conventional braking mode, a driver steps on a brake pedal 3, a brake master cylinder 2 is pushed by a pedal push rod, pressure is built in front and back cavities of the brake master cylinder 2 in sequence, brake fluid reaches a first hydraulic servo booster 4 and a second hydraulic servo booster 5 through a brake pipeline, a sliding valve in the first hydraulic servo booster 4 moves forwards under the actuating pressure of the brake master cylinder 2, a power-assisted cavity connected with a first energy accumulator 28 is opened, high-pressure brake fluid of a power source provided by a servo motor 27 and a power-assisted hydraulic pump 30 enters a power-assisted cavity in the first hydraulic servo booster 4 from the first energy accumulator 28, the high-pressure brake fluid is used as a power source to push a piston to build pressure, the first hydraulic servo booster 4 outputs the modulated brake pressure to a hydraulic control unit, the output pressure is in direct proportion to the force of the brake pedal, and a stroke simulator is integrated in the first hydraulic servo booster 4, the hydraulic pressure input to the first hydraulic servo booster 4 through the master cylinder 2 simulates corresponding brake pedal force, so that the opening degree of a slide valve is controlled, the brake pressure corresponding to the pedal stroke is modulated, the modulated pressure enters a hydraulic control unit through a pipeline, at the moment, the pressure increasing valve 12 of the first servo booster assembly is opened, the front loop linear pressure reducing valve 10 and the pressure reducing valve 16 of the first hydraulic control module are closed, and the brake fluid enters the ABS controller assembly 22 and a wheel cylinder through the pressure increasing valve 12 of the first servo booster assembly, so that the brake function is realized.
II, an active braking mode: for a vehicle provided with an intelligent driving distance measuring radar and a speed measuring sensor device, under the condition that a driver does not step on a brake pedal 3, when the radar detects that the distance of a front obstacle is too short, the vehicle control unit starts an active braking mode, in the active braking mode, the vehicle control unit sends a braking deceleration request to a brake-by-wire system ECU (electronic control unit), at the moment, the brake-by-wire system ECU opens a first hydraulic control module pressure reducing valve 16, and closes a front loop linear pressure reducing valve 10 and a first servo booster assembly pressure increasing valve 12, at the moment, brake fluid stored in a first energy accumulator 28 is released into a hydraulic control unit, and the opening degree of the first hydraulic control module pressure reducing valve 16 is adjusted through the detection value of a front loop wheel cylinder pressure sensor 20, so that the output pressure value is controlled, and the vehicle can achieve the deceleration required by the vehicle control unit.
Thirdly, emergency auxiliary braking mode: in the emergency auxiliary braking mode, the front cavity pressure sensor 6 and the rear cavity pressure sensor 7 sense braking information such as the force and the speed of the driver for stepping on the brake pedal 3 through pressure change values to judge the braking action intention of the driver, and the braking force is increased in time during emergency braking, so that effective, reliable and safe braking is provided, and the braking distance of a vehicle is shortened. When a driver steps on the pedal brake 3, if the front cavity pressure sensor 6 and the rear cavity pressure sensor 7 monitor that the boosting rate of the master cylinder 2 exceeds a set threshold value, the emergency auxiliary brake is judged to be implemented. At this time, the by-wire system ECU controls to open the first hydraulic control module pressure reducing valve 16, to release the high-pressure brake fluid stored in the first accumulator 28 to the conduit line measured by the front circuit wheel cylinder pressure sensor 20, and to make the pressure value of the conduit line greater than the pressure value triggered by the pedal force of the first hydraulic servo resistor 4 (i.e., the conduit line pressure test value of the front circuit booster output pressure sensor 8), thereby implementing the emergency auxiliary braking function.
Fourthly, a ramp auxiliary function: after the system starts the slope auxiliary control, the hydraulic control unit ECU controls the first servo booster assembly pressure increase valve 12 to be closed, so that the pipeline to the wheel cylinder continuously maintains the brake pressure, and the brake pressure of the wheel cylinder is continuously maintained at the moment, namely, the vehicle can also keep not sliding down the slope on the slope when the driver releases the brake pedal 3. When a driver steps on an accelerator, the ECU of the brake-by-wire system determines a control strategy implemented by the hill assistance according to the operation request of the engine, and keeps or releases the brake pressure.
Fifthly, a braking energy recovery function: the braking energy recovery is also called regenerative braking, and in the process of automobile deceleration, the motor brakes the automobile, recovers the braking energy and finally feeds the braking energy back to the chargeable energy storage system.
When a driver steps on the brake pedal 3 to recover braking energy, the vehicle control unit calculates the maximum torque of the motor (namely, calculates a wheel cylinder pressure value equal to the regenerative braking capacity) according to the rotating speed of the motor and the regenerative torque (braking force), and then sends the pressure difference value between the braking pressure required by the driver and the regenerative braking force of the equivalent motor as a target braking pressure value of a brake master cylinder to the brake-by-wire system ECU, and the mechanical braking component implements residual braking.
The brake-by-wire system has the capability of adjusting the brake oil pressure of the brake system according to the target oil pressure sent by the vehicle controller in the process of recovering the brake energy, and the control strategy and the working principle are as follows: (1) and (3) supercharging control: when a driver slowly steps on the brake pedal 3, the brake-by-wire system controls the brake pressure required by the driver and the pressure difference of the brake wheel cylinder through the opening degree of the pressure increasing valve 12 of the first servo booster assembly, so that the pressure value is equal to the pressure value generated by regenerative braking force, on the premise of meeting the braking effect, the energy recovery can be carried out to the maximum extent, and the smoothness and the comfort of braking are ensured. (2) And (3) pressure reduction control: when the driver slowly releases the pedal 3, the brake system ECU releases the pressure of the brake wheel cylinder to the brake liquid storage tank 1 through the linear control front loop linear pressure reducing valve 10, and the pressure reduction of the brake wheel cylinder is accelerated. The pressure difference between the braking pressure required by a driver and a brake wheel cylinder is controlled by adjusting the opening of the front-loop linear pressure reducing valve 10 to be equal to the pressure generated by regenerative braking force, so that the comfort of braking and good pedal feeling are ensured.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides an electron hydraulic pressure drive-by-wire braking system with independent two return circuits, includes braking helping hand module, helping hand power supply module and basic brake module, its characterized in that: the hydraulic control module comprises two hydraulic servo boosters which are connected with the brake booster module and the boosting power source module through pipelines and can establish brake fluid pressure, and two hydraulic control units which are respectively connected with the two hydraulic servo boosters, are used for adjusting the brake fluid pressure output by the hydraulic servo boosters and can convey the brake fluid to the basic brake module through pipelines;
the hydraulic control module comprises a first hydraulic control module consisting of a first hydraulic servo booster (4) and a first hydraulic control unit and a second hydraulic control module consisting of a second hydraulic servo booster (5) and a second hydraulic control unit;
the brake boosting module comprises a master brake pump (2) with front and rear chambers, and a piston rod of the master brake pump (2) is connected with a brake pedal (3);
the front cavity and the rear cavity of the master brake pump (2) are connected with a brake liquid storage tank (1), and the brake liquid storage tank (1) is connected with the boosting power source module, the basic brake module and the hydraulic control module;
the boosting power source module comprises a boosting hydraulic pump (30), an oil inlet of the boosting hydraulic pump (30) is connected with the brake liquid storage tank (1) through a pipeline, an oil outlet of the boosting hydraulic pump (30) is connected with a first energy storage device (28) and a second energy storage device (29) through pipelines, the first energy storage device (28) is connected with a liquid inlet of the first hydraulic servo booster (4) through a pipeline, the second energy storage device (29) is connected with a liquid inlet of the second hydraulic servo booster (5) through a pipeline, and the boosting hydraulic pump (30) is connected with a driving device for driving the boosting hydraulic pump (30) to pump oil;
the basic brake module comprises an ABS controller assembly (22) and a wheel cylinder; the brake liquid storage tank (1) is communicated with the ABS controller assembly (22) through a liquid storage tank hydraulic oil path, the liquid storage tank hydraulic oil path comprises two branch pipes connected with the ABS controller assembly (22), and each branch pipe comprises a first liquid storage tank oil path branch pipe (14) communicated with the first hydraulic control module and a second liquid storage tank oil path branch pipe (15) communicated with the second hydraulic control module;
the brake liquid storage tank (1) is connected with a pipeline between the liquid inlets of the first hydraulic servo booster (4), and the brake liquid storage tank (1) is connected with a pipeline between the liquid inlets of the second hydraulic servo booster (5).
2. The electro-hydraulic brake-by-wire system having independent dual circuits of claim 1, wherein: the first hydraulic control unit comprises a first servo booster assembly pressure increasing valve (12) connected with a liquid outlet of the first hydraulic servo booster (4), a first hydraulic control module pressure reducing valve (16) connected with the first servo booster assembly pressure increasing valve (12) and a first branch pipe pressure reducing valve (10) connected with a first liquid storage tank oil way branch pipe (14); and a pipeline is connected between the first servo booster assembly booster valve (12) and the first liquid storage tank oil way branch pipe (14).
3. The electro-hydraulic brake-by-wire system having independent dual circuits of claim 1, wherein: the second hydraulic control unit comprises a second servo booster assembly pressure increasing valve (13) connected with a liquid outlet of the second hydraulic servo booster (5), a second hydraulic control module pressure reducing valve (17) connected with the second servo booster assembly pressure increasing valve (13) and a second branch pipe pressure reducing valve (11) connected with the second liquid storage tank oil way branch pipe (15); and a pipeline is connected between the second servo booster assembly boosting valve (13) and the second liquid storage tank oil way branch pipe (15).
4. The electro-hydraulic brake-by-wire system having independent dual circuits of claim 2, wherein: the first hydraulic control unit further comprises a front cavity pressure sensor (6) connected to a front cavity of the master cylinder (2), a front loop booster output pressure sensor (8) connected to an oil outlet of the first hydraulic servo booster (4), a front loop accumulator pressure sensor (18) connected with the first accumulator (28) and a front loop wheel cylinder pressure sensor (20) connected to the first liquid storage tank oil way branch pipe (14).
5. The electro-hydraulic brake-by-wire system having independent dual circuits of claim 3, wherein: the second hydraulic control unit further comprises a rear cavity pressure sensor (7) connected to a rear cavity of the master cylinder (2), a rear loop booster output pressure sensor (9) connected to an oil outlet of the second hydraulic servo booster (5), a rear loop energy accumulator pressure sensor (19) connected with the second energy accumulator (29) and a rear loop wheel cylinder pressure sensor (21) connected to an oil way branch pipe (15) of the second liquid storage tank.
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| CN202010643369.XA CN111873969B (en) | 2020-07-06 | 2020-07-06 | Electronic hydraulic line control brake system with independent double loops |
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| CN202010643369.XA CN111873969B (en) | 2020-07-06 | 2020-07-06 | Electronic hydraulic line control brake system with independent double loops |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0687418A (en) * | 1992-09-04 | 1994-03-29 | Toyota Motor Corp | Hydraulic braking device |
| CN101284530A (en) * | 2007-04-13 | 2008-10-15 | 株式会社爱德克斯 | Braking control apparatus for vehicle |
| CN102015392A (en) * | 2008-04-04 | 2011-04-13 | 罗伯特.博世有限公司 | Hydraulic vehicle braking system |
| DE102010029057A1 (en) * | 2010-05-18 | 2011-11-24 | Continental Teves Ag & Co. Ohg | Actuator device for brake system of motor car, has pump prominent boot line comprising flow resistor and liquid capacitor that is arranged between flow resistor and suction side of pump |
| CN106627551A (en) * | 2017-02-22 | 2017-05-10 | 吉林大学 | Integrated uncoupling type electric power-assisted braking system applicable to regenerative braking |
| CN110316168A (en) * | 2019-06-28 | 2019-10-11 | 武汉元丰汽车电控系统有限公司 | A kind of pedal travel simulator apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008004201A1 (en) * | 2008-01-14 | 2009-07-16 | Robert Bosch Gmbh | Brake system and method for controlling a brake system |
| CN102303597B (en) * | 2011-05-23 | 2013-08-21 | 重庆大学 | Hybrid electrical vehicle (HEV)/electrical vehicle (EV) regeneration brake pressure coordinate control system based on antilock brake system (ABS) hardware |
| CN103895634B (en) * | 2014-04-16 | 2015-07-15 | 吉林大学 | Hydraulic device for automobile braking energy recovery |
| CN105150858B (en) * | 2015-09-14 | 2017-03-15 | 清华大学 | A kind of regeneration brake system and its control method based on ESC hardware |
| KR102480676B1 (en) * | 2015-12-04 | 2022-12-23 | 에이치엘만도 주식회사 | Electric brake system |
-
2020
- 2020-07-06 CN CN202010643369.XA patent/CN111873969B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0687418A (en) * | 1992-09-04 | 1994-03-29 | Toyota Motor Corp | Hydraulic braking device |
| CN101284530A (en) * | 2007-04-13 | 2008-10-15 | 株式会社爱德克斯 | Braking control apparatus for vehicle |
| CN102015392A (en) * | 2008-04-04 | 2011-04-13 | 罗伯特.博世有限公司 | Hydraulic vehicle braking system |
| DE102010029057A1 (en) * | 2010-05-18 | 2011-11-24 | Continental Teves Ag & Co. Ohg | Actuator device for brake system of motor car, has pump prominent boot line comprising flow resistor and liquid capacitor that is arranged between flow resistor and suction side of pump |
| CN106627551A (en) * | 2017-02-22 | 2017-05-10 | 吉林大学 | Integrated uncoupling type electric power-assisted braking system applicable to regenerative braking |
| CN110316168A (en) * | 2019-06-28 | 2019-10-11 | 武汉元丰汽车电控系统有限公司 | A kind of pedal travel simulator apparatus |
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