CN105620454A - Electric control hydraulic parking braking system and control method - Google Patents
Electric control hydraulic parking braking system and control method Download PDFInfo
- Publication number
- CN105620454A CN105620454A CN201610060923.5A CN201610060923A CN105620454A CN 105620454 A CN105620454 A CN 105620454A CN 201610060923 A CN201610060923 A CN 201610060923A CN 105620454 A CN105620454 A CN 105620454A
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- China
- Prior art keywords
- parking
- brake
- braking system
- parking braking
- control valve
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Classifications
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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
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
Abstract
The invention discloses an electric control hydraulic parking braking system and a control method. The electric control hydraulic parking braking system comprises a parking braking oil path and a service braking oil path which are integrated. The electric control hydraulic parking braking system is characterized in that a power supply, a parking switch and one or more parking control valves are respectively connected with an electronic control unit (ECU), and when receiving a signal from the parking switch, the electronic control unit (ECU) treats and controls the opening/closing motion of the parking control valves. Through the adoption of the electric control hydraulic parking braking system and the control method provided by the embodiment of the invention, varied practical problems that a parking handle (manual brake) is frequently pulled up on and put when a driver parks a vehicle and starts the vehicle can be solved; in addition, the electric control hydraulic parking braking system disclosed by the invention is reasonable in design, simple in structure, and convenient, and safe and reliable to park, the manual park does not need to be regulated, and the vehicle service cost is reduced.
Description
Technical field
The invention belongs to automobile brake technical field, especially relate to a kind of electric-controlled hydraulic parking braking system and control method.
Background technology
Parking braking is a kind of temporary parking or stops for stable vehicle for a long time, it is to avoid vehicle when slope pavement or parking owing to slipping the braking method that car causes the accident. Parking braking type refers to the mode of operation of parking braking, and on present passenger car, the mode of operation of parking braking can be divided into parking brake, service brake and electronic parking three kinds.
Conventional traditional mechanical formula parking mode is called for short parking brake, simple in construction, low cost of manufacture, but relatively take up room, additionally, life-time service parking brake can make brake cable produce plastic deformation, owing to this deformation is non-response, so life-time service can reduce effectiveness, the stroke of parking brake also can increase, especially, do not notice that maintaining may result in parking braking "Fail-safe" hidden danger. Secondly, to pull the hand brake during parking, to let go during starting and stop so that automobile manipulation is particularly loaded down with trivial details, again, for schoolgirl, it is possible to dynamics does not reach desired parking braking effect not. In order to overcome the tradition parking brake dynamics problem to the restriction of braking effect, a kind of service brake parking mode is developed.
Along with the continuous progress of auto technology, increasing motor vehicle assembly is had to control to be gradually converted into electronic type control from traditional mechanical type now. Electronic parking control system is easy to use, simple to operate, saves space, and intelligence degree is high, obtains commonly used on some middle-to-high end cars. Existing EPB electronic parking system, compare traditional mechanical parking systematic function to optimize to some extent, but only drawback is that some EPB electronic parking system does not still break away from the application of brake cable, additionally, there is the problems such as manufacturing cost height, maintenance and replacing inconvenience in EBP electronic parking.
Summary of the invention
The technical problem to be solved is in that for above-mentioned deficiency of the prior art, it is provided that a kind of electric-controlled hydraulic parking braking system and control method. Can effectively solve tradition parking mode and manipulate loaded down with trivial details, take up room, and Yin Lasuo deformation or dynamics cause the problems such as braking effect difference not; Especially compared to existing EPB electronic parking system, there is simple in construction, the feature of low cost of manufacture.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of electric-controlled hydraulic parking braking system, includes service braking system, brake operating mechanism and brake, described brake operating mechanism includes brake pedal, vacuum booster, and master cylinder is sequentially connected with; Oil storage tank is connected with master cylinder; Master cylinder, ABS assembly, wheel cylinder etc. is sequentially connected with by brake pipe; It is characterized in that: include park control valve and be arranged on master cylinder to the brake pipe between ABS assembly; Emergent unidirectional bypass bridges side by side and is arranged between park control valve, is provided with check valve in described emergent unidirectional bypass, and brake fluid force feed is only capable of being flowed to ABS assembly by master cylinder and is assigned to a wheel cylinder; Also including automatically controlled part, parking switch, park control valve is connected with electronic control unit (ECU) respectively; Described parking switch is arranged on P file location, and is controlled by P shelves; When electronic control unit (ECU) receives parking switch signal, process and control park control valve ON/OFF action.
The control method of described a kind of electric-controlled hydraulic parking braking system comprises the following steps:
Step one, parking braking: when vehicle needs parking braking, driver is brake pedal first, after vehicle comes to a complete stop, continue to slam brake pedal, then gear level is linked into P shelves, parking switch sends parking signal to electronic control unit (ECU) simultaneously, electronic control unit (ECU) receives parking signal and processes, and rear instant at least one park control valve that controls is closed, now, brakes oil return line is closed, and brakes is in service lap parked state.
Step 2, releasing parking: when vehicle needs to release parking, driver is brake pedal first, then gear level is hung up P shelves, parking switch sends to electronic control unit (ECU) and releases parking signal simultaneously, electronic control unit (ECU) receives and releases parking signal and process, rear instant at least one park control valve that controls is opened, when and during just when driver's take-off the brake brake pedal, brakes oil return release, until releasing parking completely, brakes recovers conventional non-brake state.
Preferably, parking emergency brake mode: in order to improve the safety during parking of ramp, preventing driver gently steps on brake pedal, it is linked into P shelves simultaneously, brakes oil circuit is closed, and the situation that parking braking power is inadequate, and driver can also meet an urgent need brake pedal, pressurized brake fluid force feed is flowed into ABS assembly by master cylinder through emergent unidirectional bypass by brake pipe and is assigned to each wheel cylinder, it is provided that enough parking braking power.
In sum, a kind of electric-controlled hydraulic parking braking system and control method, simple and reasonable, economical and practical, safe and reliable, it is convenient to manipulate, especially this system adopts the design concept of parking braking oil circuit and service brake oil circuit pairing one, decrease tradition parking and control drag-line, save the trouble adjusting parking brake, save and use car cost. Secondly, this electric control parking system is applicable to tradition vehicle and the electric drive vehicles such as passenger car, light bus, middle bus, commercial vehicle, MPV, light duty.
Below it is only the general design of the present invention, below by the drawings and specific embodiments, technical scheme is described in further detail.
Accompanying drawing explanation
Fig. 1 is first preferred embodiment of the invention system construction drawing
Fig. 2 is second preferred embodiment of the invention system construction drawing
Fig. 3 is control flow chart of the present invention
Description of reference numerals: 1 brake pedal, 2 vacuum boosters, 3 master cylinders, 4 oil storage tanks, 5 emergent unidirectional bypass, 6ABS assembly, 7 wheel cylinders, 01 parking switch, 02 electronic control unit (ECU), 03 park control valve, 04 power supplys
Detailed description of the invention
First preferred embodiment
As it is shown in figure 1, the preferred a kind of electric-controlled hydraulic parking braking system of the present invention first and control method.
First preferred a kind of electric-controlled hydraulic parking braking system, includes service braking system, brake operating mechanism and brake, and described brake operating mechanism includes 1 brake pedal, 2 vacuum boosters, and 3 master cylinders are sequentially connected with; 4 oil storage tanks and 3 master cylinders connect; 3 master cylinders, 6ABS assembly, 7 wheel cylinders etc. are sequentially connected with by brake pipe; It is characterized in that: 03 park control valve is arranged on 3 master cylinders to the brake pipe between 6ABS assembly; 5 emergent unidirectional bypass bridge side by side and are arranged between 03 park control valve, are provided with check valve in described 5 emergent unidirectional bypass, and brake fluid force feed is only capable of being flowed to 6ABS assembly by 3 master cylinders and is assigned to 7 wheel cylinder; Also including automatically controlled part 04 power supply, 01 parking switch, 03 park control valve is connected with 02 electronic control unit (ECU) respectively; Described 01 parking switch is arranged on P file location, and is controlled by P shelves; When 02 electronic control unit (ECU) receives 01 parking switch signal, process and control 03 park control valve ON/OFF action.
The control method of first preferred a kind of electric-controlled hydraulic parking braking system comprises the following steps:
Step one, parking braking: when vehicle needs parking braking, first driver steps on 1 brake pedal, pressurized brake fluid force feed is crossed 03 park control valve by brake pipe by 3 master cylinders and is assigned to each 7 wheel cylinders through 6ABS assembly, now, vehicle is in conventional brake state, after vehicle comes to a complete stop, continue to slam 1 brake pedal, then gear level is linked into P shelves, 01 parking switch sends parking signal to 02 electronic control unit (ECU) simultaneously, 02 electronic control unit (ECU) receives parking signal and processes, rear instant at least one 03 park control valve that controls is closed, now, brakes oil return line is closed, brakes is in service lap parked state.
Step 2, release parking: when vehicle needs to release parking, first driver steps on 1 brake pedal, then gear level is hung up P shelves, 01 parking switch sends to 02 electronic control unit (ECU) and releases parking signal simultaneously, 02 electronic control unit (ECU) receives and releases parking signal and process, rear instant at least one 03 park control valve that controls is opened, when and when unclamping 1 brake pedal just when driver, brakes oil return release, the brake fluid force feed of each 7 wheel cylinders is crossed 03 park control valve through 6ABS assembly and is flowed back to 3 master cylinders, until releasing parking completely, brakes recovers conventional non-brake state.
Second preferred embodiment
Described it is different from the first preferred embodiment, it is characterised in that: described 03 park control valve is arranged in 6ABS assembly, shares with 6ABS assembly fuel oil feed regulation valve.
The above first preferred embodiment, in the second preferred embodiment, it is preferred that parking switch is P gear position sensor. Preferably, park control valve can be the adjustment valve with lock-bit function, as: the screw rod of Serve Motor Control and valve plug composite class, can prevent the valve plug changing of the relative positions in vehicle pitching process from walking the braking of position influence normal row car.
Especially, 5. park control valve described in the embodiment of the present invention is not intended to electromagnetism regulable control or servomotor regulable control, can be that normally closed solenoid valve (during conventional brake, open by energising during electromagnetism regulable control, during parking, power-off is closed, avoid long-time parking, parking system power-fail, so that oil return release occurs unexpected), or as being provided with the solenoid valve of automatic locking positioning device between spool and valve body.
Especially, 01 parking switch described in the embodiment of the present invention is not intended to the control mode that button is arranged on central control panel.
The above; it it is only presently preferred embodiments of the present invention; not the present invention is imposed any restrictions, every any simple modification, change and equivalent structure change above example made according to the technology of the present invention essence, all still fall within the protection domain of technical solution of the present invention.
Claims (6)
1. an electric-controlled hydraulic parking braking system, includes brake operating mechanism and the brake of service braking system, and described brake operating mechanism includes brake pedal, vacuum booster, and master cylinder is sequentially connected with, oil storage tank is connected with master cylinder, master cylinder, ABS assembly, wheel cylinder is sequentially connected with by brake pipe, it is characterized in that: include park control valve and be arranged on brake pipe or in ABS assembly, power supply, parking switch, park control valve is connected with electronic control unit (ECU) respectively, described electronic control unit (ECU) receives parking switch signal, processes and controls at least one park control valve ON/OFF action, adopt the control method of described a kind of electric-controlled hydraulic parking braking system, comprise the following steps: step one, parking braking: when vehicle needs parking braking, driver is brake pedal first, pressurized brake fluid force feed is crossed park control valve by brake pipe by master cylinder and is assigned to each wheel cylinder through ABS assembly, now, vehicle is in conventional brake state, after vehicle comes to a complete stop, continue to slam brake pedal, then gear level is linked into P shelves, parking switch sends parking signal to electronic control unit (ECU) simultaneously, electronic control unit (ECU) receives parking signal and processes, rear instant at least one park control valve that controls is closed, now, brakes oil return line is closed, brakes is in service lap parked state, step 2, release parking: when vehicle needs to release parking, driver is brake pedal first, then gear level is hung up P shelves, parking switch sends to electronic control unit (ECU) and releases parking signal simultaneously, electronic control unit (ECU) receives and releases parking signal and process, rear instant at least one park control valve that controls is opened, when and just when the driver releases the brake pedal, brakes oil return release, the brake fluid force feed of each wheel cylinder is crossed park control valve through ABS assembly and is flowed back to master cylinder, until releasing parking completely, brakes recovers conventional non-brake state.
2. a kind of electric-controlled hydraulic parking braking system according to claim 1, it is characterised in that: described park control valve, there is lock-bit function.
3. a kind of electric-controlled hydraulic parking braking system according to claim 1, it is characterised in that: described parking switch is P gear position sensor.
4. a kind of electric-controlled hydraulic parking braking system according to claim 1, it is characterised in that: described parking switch is arranged on P file location, and is controlled by P shelves, or button is arranged on central control panel, by by key control.
5. a kind of electric-controlled hydraulic parking braking system according to claim 1, it is characterized in that: described park control valve is arranged on master cylinder to the brake pipe between ABS assembly, also include emergent unidirectional bypass to bridge side by side and be arranged between park control valve, being provided with check valve in described emergent unidirectional bypass, brake fluid force feed is only capable of being flowed to ABS assembly by master cylinder and is assigned to each wheel cylinder.
6. the parking emergency brake mode of a kind of electric-controlled hydraulic parking braking system according to claim 5, it is characterized in that: gently step on brake pedal with preventing driver, it is linked into P shelves simultaneously, brakes oil circuit is closed, and the situation that parking braking power is inadequate, driver can also meet an urgent need brake pedal, and pressurized brake fluid force feed is flowed into ABS assembly by master cylinder through emergent unidirectional bypass by brake pipe and is assigned to each wheel cylinder, it is provided that enough parking braking power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610060923.5A CN105620454A (en) | 2016-01-26 | 2016-01-29 | Electric control hydraulic parking braking system and control method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016100497719 | 2016-01-26 | ||
| CN201610049771 | 2016-01-26 | ||
| CN201610060923.5A CN105620454A (en) | 2016-01-26 | 2016-01-29 | Electric control hydraulic parking braking system and control method |
Publications (1)
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|---|---|
| CN105620454A true CN105620454A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610060923.5A Pending CN105620454A (en) | 2016-01-26 | 2016-01-29 | Electric control hydraulic parking braking system and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111762139A (en) * | 2020-06-29 | 2020-10-13 | 北京汽车集团越野车有限公司 | Brake system, control method thereof and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2931769A1 (en) * | 2008-05-28 | 2009-12-04 | Peugeot Citroen Automobiles Sa | Hydraulic control braking system e.g. anti-lock braking system, for motor vehicle, has brake managing circuit controlled by electronic control unit, and electrical units permitting actuation of motorized braking caliper |
| CN103935347A (en) * | 2014-04-30 | 2014-07-23 | 长城汽车股份有限公司 | Multifunctional automobile braking system |
| CN104494586A (en) * | 2014-11-19 | 2015-04-08 | 吉林大学 | Automatic parking control system and control method of automatic cars |
| CN204641722U (en) * | 2015-03-09 | 2015-09-16 | 浙江力邦合信汽车制动系统有限公司 | A kind of automatic keeping system of automobile parking hydraulic pressure not having ESC |
-
2016
- 2016-01-29 CN CN201610060923.5A patent/CN105620454A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2931769A1 (en) * | 2008-05-28 | 2009-12-04 | Peugeot Citroen Automobiles Sa | Hydraulic control braking system e.g. anti-lock braking system, for motor vehicle, has brake managing circuit controlled by electronic control unit, and electrical units permitting actuation of motorized braking caliper |
| CN103935347A (en) * | 2014-04-30 | 2014-07-23 | 长城汽车股份有限公司 | Multifunctional automobile braking system |
| CN104494586A (en) * | 2014-11-19 | 2015-04-08 | 吉林大学 | Automatic parking control system and control method of automatic cars |
| CN204641722U (en) * | 2015-03-09 | 2015-09-16 | 浙江力邦合信汽车制动系统有限公司 | A kind of automatic keeping system of automobile parking hydraulic pressure not having ESC |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111762139A (en) * | 2020-06-29 | 2020-10-13 | 北京汽车集团越野车有限公司 | Brake system, control method thereof and vehicle |
| CN111762139B (en) * | 2020-06-29 | 2023-12-15 | 北京汽车集团越野车有限公司 | Braking system, control method thereof and vehicle |
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Application publication date: 20160601 |