CN105383462A - Automobile electronic stability program control system and automobile electronic stability program control method - Google Patents
Automobile electronic stability program control system and automobile electronic stability program control method Download PDFInfo
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- CN105383462A CN105383462A CN201510881067.5A CN201510881067A CN105383462A CN 105383462 A CN105383462 A CN 105383462A CN 201510881067 A CN201510881067 A CN 201510881067A CN 105383462 A CN105383462 A CN 105383462A
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- brake
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- braking
- pressure
- automobile
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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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
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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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements 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
- B60T8/34—Arrangements 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
- B60T8/36—Arrangements 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 including a pilot valve responding to an electromagnetic force
- B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
- B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
-
- 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/60—Regenerative braking
- B60T2270/613—ESP features related thereto
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses an automobile electronic stability program control system and an automobile electronic stability program control method. The system comprises an electric generator braking device and a brake braking device, wherein the electric generator braking device comprises a brake master cylinder, a switching valve, a pedal simulator and an electric generator which acts together with automobile driving wheels; when the electric generator braking device works, braking liquid of the brake master cylinder flows to the pedal simulator through the switching valve; the brake braking device comprises a driving motor, a booster pump, a booster valve and a brake cylinder; the booster valve is in a normally closed state; when the brake braking device works, the driving motor and the booster pump work and form pressure; when the pressure value is continuously increased and the booster valve is opened, the braking liquid flows to the brake cylinder. According to the automobile electronic stability program control system and the automobile electronic stability program control method disclosed by the invention, components related with energy recycle function are introduced, so that a new energy automobile can realize energy recycle during a braking process; moreover, the automobile electronic stability program control system disclosed by the invention is provided with the pedal simulator, so during the braking process, a driver feels the pedal not much different from that in a general braking process.
Description
Technical field
The present invention relates to automobile brake control technology, particularly relate to a kind of electronic stability program of automobile control system and control method.
Background technology
After China implements a series of sustainable development behave such as energy-saving and emission-reduction, protection of the environment, cause the upsurge greatly developing new forms of energy car.2010, new-energy automobile industry was listed in national seven great strategy new industries by management level.The deployment of national strategy aspect excites the enthusiasm that people open up new-energy automobile industry especially.Flourish along with new-energy automobile industry, associated industry-by-industry technology it is also proposed new requirement.
High-capacity storage battery, motor (electrical generator) widespread use on new forms of energy car, make the energy regenerating of new-energy automobile in braking procedure become possibility.Therefore, in brake system of car, how under the prerequisite ensureing automobile braking safety, brake system is made can to participate in the energy regenerating of automobile and make that the braking of automobile is more comfortable to become in brake system a new problem.
Summary of the invention
Technical matters to be solved by this invention is just to provide a kind of electronic stability program of automobile control system and control method, can be applied on new-energy automobile, possess energy recovery function.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of electronic stability program of automobile control system, comprise generator brake device and brake device, described generator brake device comprises master brake cylinder, transfer valve and pedal simulator and the electrical generator with automobile driving wheel effect, when generator brake device works, the braking liquid of described master brake cylinder flows to pedal simulator through transfer valve, described brake device comprises drive motor, boost pump, pressure charging valve, brake cylinder, described pressure charging valve is normally off, when brake device works, described drive motor and boost pump work build-up pressure, after force value continues to rise and opens pressure charging valve, brake oil flow brake cylinder.
As preferably, be divided into two brake circuits from master brake cylinder braking liquid out, brake circuit is connected with pressure sensor.
Further, described brake cylinder is connected with reducing valve.
Further, described reducing valve is connected with protective valve, and described protective valve is connected to oil sources by oil filter.
As preferably, be also provided with high pressure accumulator, the pulse that described high pressure accumulator produces for filtering boost pump, if when boost pump pumping rate can not meet braking requirement, compensated by high pressure accumulator.
Present invention also offers a kind of electronic stability program of automobile control method, automobile driving wheel is in braking procedure, first worked by generator brake device, Automobile drive wheel drive electrical generator carries out power generation operation, the braking liquid of master brake cylinder flows to pedal simulator through transfer valve and produces pressure, according to the force value that pressure sensor detects, drive motor and boost pump are started working and are started to set up the pressure of demand, when needed for the generating of electrical generator, moment meets brake request completely, the braking of automobile is completed by generator brake device completely, the lock torque that electrical generator produces in power generation process, its equivalent braking liquid is isolated by normally closed pressure charging valve, when needed for the generating of electrical generator, moment can not meet brake request, the pressure durations detected along with pressure sensor rises, the force value that drive motor and boost pump are set up continues to rise, and finally open the pressure charging valve of normally off, pressure charging valve carries out braking liquid to brake cylinder and supplements, brake device is started working, and now automobile driving wheel braking will have been come by generator brake device and brake device, jointly to meet the braking requirement of car load.
Further, when there is locking or locking trend in wheel, generator brake device quits work, now, pressure charging valve cuts out reducing valve and protective valve simultaneously and opens, braking liquid in brake cylinder flows out and arrives oil sources through reducing valve and protective valve, and the brake-pressure of brake cylinder declines, and not locking state replied by wheel;
Further, when automobile is initiatively braked, chaufeur does not have braking intention, master brake cylinder does not produce oil pressure, vehicle electronic control unit according to vehicle sensor signal judge vehicle exist break away or collision dangerous time drive motor start drive boost pump work and set up oil pressure, oil pressure enters brake cylinder by pressure charging valve to start wheel braking.
The technical solution used in the present invention, introduce the generator brake device relevant to energy recovery function, make new-energy automobile can carry out energy regenerating in braking procedure, and the present invention is designed with pedal simulator, makes pedal sense and conventional brake in the braking procedure of driver very nearly the same.
The invention has the beneficial effects as follows:
Automobile brake is introduced by the brake fluid pressure that boost pump is produced, can be implemented in conventional brake process, master brake cylinder is separated completely with brake cylinder, thus reduces the brake pressure request of master brake cylinder, can cancel the force aid system for braking that new-energy automobile is loaded down with trivial details.
Designed by the pressure charging valve of special normally off, make automobile driving wheel in braking procedure, first carry out the power generation operation of electrical generator.When needed for the generating of electrical generator, moment meets brake request completely, the braking of automobile by drive wheel generator brake and complete.The lock torque that electrical generator produces in power generation process, its equivalent braking liquid will not remove drg, and be isolated by normally closed pressure charging valve.When needed for the generating of electrical generator, moment can not meet brake request, pressure charging valve starts to carry out braking liquid to automobile brake cylinder and supplements, automobile driving wheel braking will have been come jointly by electrical generator and drg, this braking is combined with the height of energy regenerating, has the comfortable advantage with reducing waste of power of brake safe.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is the hydraulic schematic diagram of EESC electromagnetic valve;
The hydraulic figure that Fig. 2 is EESC electromagnetic valve when drive wheel completes braking by electrical generator separately;
Fig. 3 is that EESC electromagnetic valve completes the hydraulic figure of braking at drive wheel jointly by electrical generator and drg;
Fig. 4 is EESC electromagnetic valve is switched to ABS (Anti-lock Braking System) hydraulic figure when energy recovery state;
Fig. 5 is the hydraulic figure of EESC electromagnetic valve when electronic stability program control system or intelligent driving are initiatively braked.
In figure: master brake cylinder 1, first pressure sensor 201, second pressure sensor 202, 3rd pressure sensor 203, first transfer valve 301, second transfer valve 302, 3rd transfer valve 303, 4th transfer valve 304, first pedal simulator 401, second pedal simulator 402, high pressure accumulator 5, first pressure charging valve 601, second pressure charging valve 602, 3rd pressure charging valve 603, 4th pressure charging valve 604, boost pump 7, drive motor 8, first reducing valve 901, second reducing valve 902, 3rd reducing valve 903, 4th reducing valve 904, protective valve 10, oil filter 11, oil sources 12, first drg wheel cylinder 1301, second brake wheel cylinder 1302, 3rd drg wheel cylinder 1303, 4th drg wheel cylinder 1304.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figures 1 to 4, a kind of electronic stability program of automobile control system, comprise generator brake device and brake device, wherein generator brake device comprises master brake cylinder 1, transfer valve and pedal simulator and the electrical generator with automobile driving wheel effect, brake device comprises drive motor 8, boost pump 7, pressure charging valve, brake cylinder, and wherein pressure charging valve is normally off.
Master brake cylinder 1 braking liquid is out divided into two brake circuits, be respectively used to the braking of each two automobile driving wheels, first brake circuit is at close master brake cylinder 1 termination first pressure sensor 201, first brake circuit is by the first transfer valve 301, the first brake cylinder 1301 is connected respectively to after second transfer valve 302, second brake cylinder 1302, wherein the first brake cylinder 1301 connects the second pressure sensor 202, first brake cylinder 1301, second brake cylinder 1302 is respectively by the first reducing valve 901, protective valve 10 is connected to after second reducing valve 902, protective valve 10 is connected to oil sources 12 by oil filter 11, first transfer valve 301, second transfer valve 302 connects the first pedal simulator 401, oil sources 12 is connected to boost pump 7 by oil filter 11, boost pump 7 is driven by drive motor 8 and connects high pressure accumulator 5 and the first pressure charging valve 601, second pressure charging valve 602, first pressure charging valve 601, second pressure charging valve 602 is connected respectively to the first brake cylinder 1301, second brake cylinder 1302.The connection mode of the second brake circuit is identical with the first brake circuit, second brake circuit is by being connected respectively to the 3rd brake cylinder 1303, the 4th brake cylinder 1304 after the 3rd transfer valve 303, the 4th transfer valve 304, wherein the 4th brake cylinder 1304 connects the 3rd pressure sensor the 203, three brake cylinder 1303, the 4th brake cylinder 1304 is connected to protective valve 10 respectively by after the 3rd reducing valve 903, the 4th reducing valve 904; 3rd transfer valve 303, the 4th transfer valve 304 connect the second pedal simulator 402; 3rd pressure charging valve 603, the 4th pressure charging valve 604 are connected respectively to the 3rd brake cylinder 1303, the 4th brake cylinder 1304.
Fig. 1 is the hydraulic schematic diagram of EESC electromagnetic valve.Master brake cylinder 1, first pressure sensor 201, first transfer valve 301, second transfer valve 302 and the first pedal simulator 401 can be used as a relatively independent entirety as seen from Figure 1, through the first transfer valve 301, the adjustment of the second transfer valve 302, brake oil flow first pedal simulator 401 of master brake cylinder 1, and the intention of chaufeur is identified according to the first pressure sensor 201.Braking liquid required for car brakeing is from boost pump 7, high pressure accumulator 5 and the first pressure charging valve 601, second pressure charging valve 602, when needs energy regenerating, the first pressure charging valve 601, second pressure charging valve 602 can stop part braking liquid to enter the first brake cylinder 1301, second brake cylinder 1302.The pulse that boost pump 7 produces can be filtered in high pressure accumulator 5 one aspect, makes pressure source more stable; In addition on the one hand, if when boost pump 7 pumping rate can not meet braking requirement, compensated by high pressure accumulator 5.The braking liquid of the first brake cylinder 1301, second brake cylinder 1302 can be monitored by the second pressure sensor 202, vehicle's current condition mechanism of power generation kinetic force can be calculated according to vehicle present speed, be realized the closed loop control of synthetical restraint situation by the difference of pressure of the first pressure sensor 201 and the second pressure sensor 202 and generator brake capabilities might.First brake cylinder 1301, second brake cylinder 1302 connects the first reducing valve 901 respectively and the second reducing valve 902, first reducing valve 901, second reducing valve 902 connects protective valve 10.The pressure that first reducing valve 901, second reducing valve 902 completes the first brake cylinder 1301, second brake cylinder 1302 respectively regulates, and protective valve 10, when reducing valve lost efficacy, ensures the deceleration and stopping performance meeting wheel.Simultaneously when the electric function of electromagnetic valve lost efficacy, directly flow to the first brake cylinder 1301, second brake cylinder 1302, to complete the partial brake usefulness of vehicle by the braking liquid of master brake cylinder 1.The principle of work of the second brake circuit is identical with the first above-mentioned brake circuit, is not repeating.
The hydraulic figure that Fig. 2 is EESC electromagnetic valve when drive wheel completes braking by electrical generator separately.As seen from Figure 2, under this state, chaufeur has started braking, but the braking liquid of master brake cylinder 1 does not remove brake cylinder, and flows to the first pedal simulator 401 through the first transfer valve 301, second transfer valve 302 and produce pressure.According to the force value that the first pressure sensor 201 detects, drive motor 8 and boost pump 7 are started working and are started to set up the pressure of demand.The generate electricity brake torque that produces of this working process drive wheel can meet the braking requirement of vehicle, therefore the braking oil pressure that boost pump produces can not open the first pressure charging valve 601, second pressure charging valve 602 of normally off, and the braking of wheel has been come by power generation torque completely.
Fig. 3 is that EESC electromagnetic valve completes the hydraulic figure of braking at drive wheel jointly by electrical generator and drg.As seen from Figure 3, the generator brake of drive wheel can not meet the braking requirement of car load in this condition.The pressure durations detected along with pressure sensor rises, the force value that drive motor 8 and boost pump 7 are set up continues to rise, and finally open the first pressure charging valve 601, second pressure charging valve 602 of normally off, under the effect of drive motor 8 and boost pump 7, brake oil flow first brake cylinder 1301, second brake cylinder 1302 also starts to complete the braking requirement that braking meets car load together with power generation torque.
Fig. 4 is EESC is switched to ABS (Anti-lock Braking System) hydraulic figure when energy recovery state.As seen from Figure 4, when locking or locking trend appear in wheel, automobile energy reclaims function and cancels, and at this moment vehicle meets braking requirement by hydraulic braking completely.When such as left front (FL) takes turns and has locking phenomenon or locking trend; first pressure charging valve 601 cuts out the first reducing valve 901 and protective valve 10 simultaneously and opens; braking liquid in first brake cylinder 1301 flows out and arrives oil sources 12 through the first reducing valve 901 and protective valve 10; the brake-pressure of the first brake cylinder 1301 declines, and not locking state replied by wheel.
Fig. 5 is the hydraulic figure of EESC electromagnetic valve when electronic stability program control system or intelligent driving are initiatively braked.As seen from Figure 5, chaufeur does not have braking intention in this process, and master brake cylinder 1 does not produce oil pressure.According to sensor signal, ECU (electronic control unit) judges that vehicle exists the danger of breakking away or colliding, at this moment drive motor 8 starts to drive boost pump 7 start working and set up oil pressure, and oil pressure enters the first brake cylinder 1301, second brake cylinder 1302 by the first pressure charging valve 601, second pressure charging valve 602 to start wheel braking.
The active boost function of EESC of the present invention directly can carry out car brakeing, makes new-energy automobile cancel the power-assisted requirement of master brake cylinder; Increase pedal simulator in EESC of the present invention, make pedal sense and conventional brake in the braking procedure of driver very nearly the same.Because the present invention is based on electronic stability program of automobile control system's development, so application of the present invention not only has electronics vehicle body stabilization function, also has the energy recovery function of new-energy automobile.And feel with the tread plate that conventional brake is more or less the same the popularization being convenient to product.
Claims (9)
1. an electronic stability program of automobile control system, it is characterized in that: comprise generator brake device and brake device, described generator brake device comprises master brake cylinder, transfer valve and pedal simulator and the electrical generator with automobile driving wheel effect, when generator brake device works, the braking liquid of described master brake cylinder flows to pedal simulator through transfer valve, described brake device comprises drive motor, boost pump, pressure charging valve, brake cylinder, described pressure charging valve is normally off, when brake device works, described drive motor and boost pump work build-up pressure, after force value continues to rise and opens pressure charging valve, brake oil flow brake cylinder.
2. a kind of electronic stability program of automobile control system according to claim 1, is characterized in that: be divided into two brake circuits from master brake cylinder braking liquid out, brake circuit is connected with pressure sensor.
3. a kind of electronic stability program of automobile control system according to claim 1, is characterized in that: described brake cylinder is connected with reducing valve.
4. a kind of electronic stability program of automobile control system according to claim 3, is characterized in that: described reducing valve is connected with protective valve.
5. a kind of electronic stability program of automobile control system according to claim 4, is characterized in that: described protective valve is connected to oil sources by oil filter.
6. a kind of electronic stability program of automobile control system according to claim 1, it is characterized in that: be also provided with high pressure accumulator, the pulse that described high pressure accumulator produces for filtering boost pump, if when boost pump pumping rate can not meet braking requirement, compensated by high pressure accumulator.
7. an electronic stability program of automobile control method, it is characterized in that: automobile driving wheel is in braking procedure, first worked by generator brake device, Automobile drive wheel drive electrical generator carries out power generation operation, the braking liquid of master brake cylinder flows to pedal simulator through transfer valve and produces pressure, according to the force value that pressure sensor detects, drive motor and boost pump are started working and are started to set up the pressure of demand, when needed for the generating of electrical generator, moment meets brake request completely, the braking of automobile is completed by generator brake device completely, the lock torque that electrical generator produces in power generation process, its equivalent braking liquid is isolated by normally closed pressure charging valve, when needed for the generating of electrical generator, moment can not meet brake request, the pressure durations detected along with pressure sensor rises, the force value that drive motor and boost pump are set up continues to rise, and finally open the pressure charging valve of normally off, pressure charging valve carries out braking liquid to brake cylinder and supplements, brake device is started working, and now automobile driving wheel braking will have been come by generator brake device and brake device, jointly to meet the braking requirement of car load.
8. a kind of electronic stability program of automobile control method according to claim 7; it is characterized in that: when locking or locking trend appear in wheel; generator brake device quits work; now; pressure charging valve cuts out reducing valve and protective valve simultaneously and opens; braking liquid in brake cylinder flows out and arrives oil sources through reducing valve and protective valve, and the brake-pressure of brake cylinder declines, and not locking state replied by wheel.
9. a kind of electronic stability program of automobile control method according to claim 7, it is characterized in that: when automobile is initiatively braked, chaufeur does not have braking intention, master brake cylinder does not produce oil pressure, vehicle electronic control unit according to vehicle sensor signal judge vehicle exist break away or collision dangerous time drive motor start drive boost pump work and set up oil pressure, oil pressure enters brake cylinder by pressure charging valve to start wheel braking.
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| CN201510881067.5A CN105383462B (en) | 2015-12-03 | 2015-12-03 | A kind of electronic stability program of automobile control system and control method |
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| CN201510881067.5A CN105383462B (en) | 2015-12-03 | 2015-12-03 | A kind of electronic stability program of automobile control system and control method |
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| WO2021004526A1 (en) * | 2019-07-11 | 2021-01-14 | 浙江亚太机电股份有限公司 | Electro-hydraulic coupling drive-by-wire power-assisted braking system and method |
| WO2021063158A1 (en) * | 2019-09-30 | 2021-04-08 | 华为技术有限公司 | Distributed braking system of automobile, automobile, and control method for distributed braking system |
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