CN102815290A - Equivalent circuit for activation of an electric vacuum pump in case of control unit failure - Google Patents
Equivalent circuit for activation of an electric vacuum pump in case of control unit failure Download PDFInfo
- Publication number
- CN102815290A CN102815290A CN2012101840036A CN201210184003A CN102815290A CN 102815290 A CN102815290 A CN 102815290A CN 2012101840036 A CN2012101840036 A CN 2012101840036A CN 201210184003 A CN201210184003 A CN 201210184003A CN 102815290 A CN102815290 A CN 102815290A
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- China
- Prior art keywords
- signal
- vacuum pump
- redundant circuit
- electric vacuum
- output part
- Prior art date
- Legal status (The legal status 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 status listed.)
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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
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
-
- 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
- B60T13/24—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 gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
-
- 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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
Abstract
The present invention relates to a brake booster system in motor vehicles. It is an equivalent circuit (100) for activation of an electric vacuum pump (200) is proposed in a booster unit (300) comprising a first signal input (110) for supplying a signal representative of a brake actuation signal (111), a second signal input (120) for feeding a reference signal (121) from an ESP control unit (140) and a signal output (130) for driving the electric vacuum pump (200), wherein the first signal input (110) and the signal output (130) are so interconnected with each other, that upon receipt of one of a brake actuation signal representative (111) at the first signal input (110) is an electric vacuum pump (200) is an activating signal (131) is outputted to the signal output (130), wherein the second signal input (120) to the signal output (130) connected so that an output of an activating electrical vacuum pump signal (131) is suppressed in the signal output (130), providing the operational readiness of the ESP control device (140) representing reference signal (121) applied to the second signal input.
Description
Technical field
The present invention relates to the braking force multiplying arrangement in a kind of automobile.The present invention particularly relates to a kind of redundant circuit that when the controller et out of order, activates electric vacuum pump.
Background technology
Provide support to chaufeur through brake booster (BKV) at glancing impact in the automobile in modern times.Reduce to be used for the required operating effort of braking vehicle by BKV.By BKV the auxiliary force of use is provided is by producing at bar pressure and the pressure reduction between the low pressure of the inside of BKV existence in the low pressure BKV that in automobile, uses usually for this reason.
Even the centre is connected with BKV, brake pedal also directly affacts main brake cylinder as the brake pedal in the traditional brake system that does not have amplifier.Said main brake cylinder will be used for transmitting the employed braking liquid of braking force and be pressed into the pipeline system that is used to brake.Obtain the support of the rolling film in the cylinder through this pressure of BKV.In the both sides of said rolling film, when BKV is in dead position, be in low pressure when just drg is not by operation.Through the operation brake pedal, and bar pressure is provided for pedal one side of film through valve, in this way since then the pressure reduction of appearance and a kind of power appears, this power is supported in the power that applies on the pedal on identical action direction.
Wherein, can be created in low pressure essential among the BKV in a different manner.In aspirating air pipe, have in the combustion engine of flow regulating valve and producing the pressure that reduces with respect to ambient pressure at the back of flow regulating valve, this pressure can be input among the BKV.Yet, only in the part load zone of driving engine, have this low pressure.The low pressure that does not occur to be input to BKV under the situation of the full load when flow regulating valve is correspondingly opened fully.
In not having the combustion engine of flow regulating valve,, perhaps in the modern gasoline driving engine of direct injection is arranged, must additionally produce and be used for the required low pressure of low pressure BKV operation as for example in diesel engine.This for example can be by the vacuum pump (MVP) of machinery, and perhaps electric vacuum pump (EVP) is accomplished.Since relatively simple for structure usually, now EVP is used to produce essential low pressure in the relatively good automobile in modern times of controllability.Electric vacuum pump EVP also has such advantage in addition, and promptly it can not rely on the running state ground generation vacuum of combustion engine.This point mainly is to have starting one to stop in the automobile of a moving function, in hybrid vehicle or electronlmobil, be important.
By controller this pump is controlled and regulated.Usually the control to this EVP is integrated in the controller.Said controller also accommodates and is integrated in the ESP electronic stability program (ESP) in the automobile now usually, and said system is adjusted in its aspect through anti-wheel lockup system and slip-skid prevention propulsive effort and brakig force distribution are exerted one's influence to the single wheel of automobile.
When because the fault of controller does not just have low pressure to supply the operation of BKV to use no longer can control vacuum pump the time, like this chaufeur must be under the support that does not have BKV braking vehicle.Must guarantee structurally also that in this case brake equipment satisfies the regulation of law aspect deceleration effort.Yet,,, and also can cause making the people worried because the caused operation of braking means power of fault of vacuum pump makes chaufeur feel under the weather at least even guarantee to satisfy the legal provisions aspect deceleration.
Summary of the invention
Therefore, advise a kind of redundant circuit that is used for activating the electric vacuum pump of braking force multiplying arrangement according to the present invention.It has first signal input part that is used to import the signal of representing brake operating; Be used to import the main control unit of electric vacuum pump; The secondary signal input end of the reference signal of ESP controller for example; With the signal output part that is used to trigger electric vacuum pump, wherein, first signal input part so is connected with signal output part each other; Promptly when the signal of first signal input part input expression brake operating, on signal output part, export the signal that activates electric vacuum pump; Wherein, the secondary signal input end so is connected with signal output part, promptly on signal output part, exports the signal that activates electric vacuum pump as long as on the secondary signal input end, have the reference signal of the running ready of expression ESP controller with regard to stoping.
Guarantee through redundant circuit according to the present invention, even disturb or have fault also can guarantee the vacuum that provides enough, so that keep the reinforcement of braking force through BKV when the ESP controller as the main control unit of EVP has.
According to redundant circuit analysis of the present invention, whether operated drg.For this reason, for example can consider stop lamp switch information.Instead, and/or additionally can consider brake lamp, brake-pressure sensor, force gauge, power switch, pedal stroke sensor, and/or the information of pedal angular transducer, whether operated drg with identification.Then produce the control signal that triggers EVP when recognizing brake operating.Redundant circuit is also received running state or the information of running ready aspect of the main control unit of relevant EVP with the form of for example reference signal except analyzing brake operating.As long as the running ready of main control unit is arranged, and guarantee that through main control unit trouble free to EVP triggers the control signal that just stops through the redundant circuit generation and outputs to EVP according to reference signal.When lacking reference signal, and therefore estimate to lack the running ready of main control unit, then will output to EVP, and ensure to EVP enough vacuum are provided by the control signal that redundant circuit produces.
Redundant circuit has the power supply that is independent of main control unit in a scheme of the present invention.Improved reliability of operation further through this measure.Advantageously this independently power supply be design-calculated like this, promptly when the starting of the system of automobile, can having big time delay ground does not provide electric current independently.
It is design-calculated like this that power supply is provided according to another aspect of the present invention independently, promptly when giving the vacuum pump output signal through signal output part, also is provided for moving necessary voltage to vacuum pump.Through this measure another system margin is provided.
Redundant circuit has supervisory circuit according to another aspect of the present invention, can monitor the running ready of redundant circuit through said supervisory circuit, and when fault exportable breakdown signal.Guarantee to confirm the fault function early through this measure, and can guarantee reliability of operation.
This redundant circuit has Postponement module in according to a kind of scheme of redundant circuit of the present invention.Use the signal of the delay t1 exportable activation electric vacuum pump on signal output part that can stipulate later at the signal of input expression brake operating through this Postponement module.Advantageously can avoid because the undesirable influence that signal quality caused through this measure.Wherein, in another program, can stipulate, can on signal output part, export the signal that activates electric vacuum pump for a time gap t2 ground that has expression brake operating signal by Postponement module.The vacuum leak that in BKV, occurs in the time of can being equilibrated at release the brake through this measure.
In addition, the invention still further relates to a kind of method that main control unit triggers compensate for failed function in the electric vacuum pump of in the braking force amplification system, passing through, have following method step:
-will represent that the signal of brake operating is incorporated in the redundant circuit;
-will represent that the reference signal of the running ready of main control unit is incorporated in the redundant circuit, and
-generation activates the signal of electric vacuum pump,
It is characterized in that,
As long as the signal at the running ready that has the expression main control unit on the signal input part of redundant circuit is just exported the signal that activates electric vacuum pump on the signal output part of prevention at redundant circuit.
In a kind of scheme according to the method for the invention, on the signal output part of the slow t1 time gap of signal time delay ground that has the expression brake operating, produce and/or export the signal that activates electric vacuum pump at redundant circuit.Can avoid because the caused undesirable influence of signal quality through this measure.
Another program is according to the method for the invention exceeding on the signal output part (130) when having the signal of expression brake operating and is producing on the mouth of expression brake operating signal time gap t2 ground at redundant circuit of existence and/or the signal of output activation electric vacuum pump.Can compensate through the possible vacuum leak among its caused BKV of release the brake through this measure.
In another program according to the method for the invention; When the reference signal of the running ready of in redundant circuit, not representing main control unit, then the signal of beat ground output activation electric vacuum pump is irrespectively arranged at the signal output part of redundant circuit with expression brake operating signal is arranged.Even under the noisy situation of the monitoring of main control unit and brake operating, also can ensure to BKV vacuum is provided continuously through this measure.This gives another remaining of system, and therefore contributes for improving fail safety.
Description of drawings
By accompanying drawing the present invention is described in more details below.These accompanying drawings are:
Fig. 1: the function sketch when main control unit has function to prepare according to redundant circuit of the present invention;
Fig. 2: the function sketch when main control unit has interference according to redundant circuit of the present invention;
Fig. 3: control signal is lingeringly outputed to vacuum pump.
The specific embodiment
Function sketch when Fig. 1 illustrates main control unit 140 and has function to prepare according to redundant circuit 100 of the present invention.
The redundant circuit 100 that is used for activating the electric vacuum pump 200 of braking force multiplying arrangement 300 has first signal input part 110 that is used to import expression brake operating signal 111, is used to import the secondary signal input end 120 of reference signal 121 of the main control unit 140 of electric vacuum pump.Wherein, for example the ESP controller can be used as main control unit 140.In addition, redundant circuit also has the signal output part 130 that is used to trigger electric vacuum pump 200.First signal input part 110 is so to be connected to each other with signal output part 130, promptly when the signal that will represent brake operating 111 is input to first signal input part 110, exports the signal 131 that activates electric vacuum pumps 200 at signal output part 130.Secondary signal input end 120 is bonded assemblys like this with signal output part 130, promptly needs only the signal 131 that just stops output activation electric vacuum pump on signal output part 130 in the reference signal 121 of the running ready that has expression main control unit 140 on the secondary signal input end.Accomplish the activation of main vacuum pump 200 then through the main control unit of running ready.In addition, redundant circuit also can have Postponement module 150, by said Postponement module than the incoming signal 111 ground output signals 131 that lag behind.
Fig. 2 illustrates main control unit has the function sketch according to redundant circuit of the present invention when disturbing.Therefore in main control unit 140, interference is arranged, and can not guarantee to activate electric vacuum pump 200 through main control unit when control setup 140 lacks running ready.So on signal input part 120, do not have reference signal 121 because main control unit lacks running ready.Output is produced by redundant circuit; And the control signal 131 that is used to activate electric vacuum pump 200 is not suppressed now; And export to electric vacuum pump through signal output part 130; Wherein, said control signal 131 is owing to there is the signal 111 of expression operational brake to be present in that signal input part 110 produces by redundant circuit.Through this measure,, and guarantee in braking force multiplying arrangement 300, to provide enough vacuum even main control unit 140 does not have running ready when operational brake, can activate vacuum pump 200 yet.
Fig. 3 illustrates the situation that control signal postpones to output to vacuum pump.Postponement module 150 is than the signal 131 of the output activation electric vacuum pump on signal input part 110 incoming signals t1 ground 111 delay time.Can avoid because the issuable undesirable influence of signal quality of signal 111 through this measure.In addition also can exceed by this Postponement module 150 and have signal 111 t2 ground output signals 131.Also can on the operating time of drg, produce vacuum through this measure electric vacuum pump, but the vacuum leak that in BKV, occurs owing to loosening drg with regard to balance in such event.In addition, can stipulate also that Postponement module 150 has the output of beat ground to activate the signal 131 of electric vacuum pump.Stop the output of signal for this reason at time gap t3 output signal 131, and at time gap t4.The signal 131 that activates electric vacuum pump through this beat-type ground output can be avoided the continuous running of vacuum pump when operational brake constantly, and therefore avoids the thermal overload of the actuating device of vacuum pump relevant with it or vacuum pump.
Claims (10)
1. be used for activating the redundant circuit (100) of electric vacuum pump (200) at braking force multiplying arrangement (300); Has first signal input part (110) that is used to import the signal (111) of representing brake operating; Be used to import the secondary signal input end (120) of reference signal (121) of for example ESP controller of the main control unit (140) of electric vacuum pump; With the signal output part that is used to trigger electric vacuum pump (200) (130); Wherein, First signal input part (110) and signal output part (130) are connected to each other, thereby when the signal that will represent brake operating (111) is input to first signal input part (110), activate the signal (131) of electric vacuum pump (200) in signal output part (130) output; Wherein, Secondary signal input end (120) is connected with signal output part (130), thereby as long as on the secondary signal input end, have the reference signal (121) of the running ready of expression main control unit (140), just stops at signal output part (130) and go up the signal (131) that output activates electric vacuum pump.
2. according to the described redundant circuit of claim 1, wherein, the signal of expression brake operating is the signal of brake lamp, stop lamp switch, brake-pressure sensor, sensor force switch, pedal stroke sensor and/or pedal angular transducer.
3. according to each the described redundant circuit in claim 1 or 2, wherein, said redundant circuit has the power supply that is independent of main control unit (140).
4. according to the described redundant circuit of claim 3, wherein, design independently power supply, thereby it is provided for moving necessary voltage through signal output part (130) output signal (131) time, also for vacuum pump (200).
5. according to each the described redundant circuit in the aforementioned claim, wherein, said redundant circuit has supervisory circuit, can monitor the running ready situation of redundant circuit (100) through said supervisory circuit, and when fault is arranged exportable breakdown signal.
6. according to each the described redundant circuit in the aforementioned claim; Wherein, This redundant circuit has Postponement module (150), after the signal (111) of input expression brake operating, at signal output part (130) exports the signal (131) that activate electric vacuum pump (200) with the delay t1 ground that can stipulate through said Postponement module.
7. according to the described redundant circuit of claim 6; Wherein, surpass signal (111) the time gap t2 ground that has the expression brake operating by Postponement module (150) and go up the signal (131) that output activates electric vacuum pump (200) at signal output part (130).
8. be used for the method for compensate for failed function when triggering electric vacuum pump (200), have following method step through ESP controller (140) in braking force amplification system (300):
-will represent that the signal (111) of brake operating is incorporated in the redundant circuit (100);
-will represent that the reference signal (121) of the running ready of ESP controller (140) is incorporated in the redundant circuit (100);
-produce the signal (131) that activates electric vacuum pump (200), it is characterized in that,
As long as on the signal input part (120) of redundant circuit (100), have the signal (121) of the running ready of expression ESP controller (140), just stop and go up the signal (131) that output activates electric vacuum pump (200) at redundant circuit (100) signal output part (130).
9. according to the described method of claim 8; Wherein, delay time lag t1 ground is gone up at the signal output part (130) of redundant circuit (100) and is produced and/or export the signal (131) that activates electric vacuum pump (200) when having the signal (111) of expression brake operating.
10. according to claim 8 or 9 described methods; Wherein, When having the signal of expression brake operating, go up signal (111) than the expression brake operating that exists at signal output part (130) and exceeded time gap t2 ground and go up the signal (131) that produces and/or export activation electric vacuum pump (200) at the signal output part (130) of redundant circuit (100).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011077107.7 | 2011-06-07 | ||
| DE201110077107 DE102011077107A1 (en) | 2011-06-07 | 2011-06-07 | Replacement circuit for activation of an electric vacuum pump in the event of a controller failure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102815290A true CN102815290A (en) | 2012-12-12 |
| CN102815290B CN102815290B (en) | 2017-03-01 |
Family
ID=47220353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210184003.6A Active CN102815290B (en) | 2011-06-07 | 2012-06-06 | Activate the stand-by circuit of electric vacuum pump when controller breaks down |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6001337B2 (en) |
| CN (1) | CN102815290B (en) |
| DE (1) | DE102011077107A1 (en) |
| FR (1) | FR2976241A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697347A (en) * | 2014-12-11 | 2016-06-22 | 现代自动车株式会社 | Method and system for controlling electrical vacuum pump |
| CN106274880A (en) * | 2016-08-31 | 2017-01-04 | 北京新能源汽车股份有限公司 | A kind of brake boost control system and brake boost control method |
| CN106544725A (en) * | 2016-10-17 | 2017-03-29 | 镇江荣德新能源科技有限公司 | Device is saved in a kind of polycrystalline furnace vacuum pump failure bridging |
| CN108644096A (en) * | 2018-04-27 | 2018-10-12 | 北京新能源汽车股份有限公司 | Vacuum pump control system and vehicle for vehicle |
| CN111959472A (en) * | 2020-08-31 | 2020-11-20 | 安徽江淮汽车集团股份有限公司 | Electric automobile vacuum pump redundancy control system and method and electric automobile |
| CN112677950A (en) * | 2021-01-12 | 2021-04-20 | 精诚工科汽车系统有限公司 | Brake control method, device and system |
| CN113085814A (en) * | 2020-01-09 | 2021-07-09 | 瀚德万安(上海)电控制动系统有限公司 | Braking system of vehicle |
| CN115175836A (en) * | 2020-02-26 | 2022-10-11 | 大陆汽车科技有限公司 | Vacuum power-assisted brake system with redundancy |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9374182B2 (en) | 2014-10-22 | 2016-06-21 | Hyundai Motor Company | Vehicle and method for controlling the same |
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| EP0618114A1 (en) * | 1993-04-02 | 1994-10-05 | Société Anonyme dite: REGIE NATIONALE DES USINES RENAULT | Brake system and piezo-driven pump |
| CN201056206Y (en) * | 2007-07-20 | 2008-05-07 | 蒋中林 | Safety brake compensating gear |
| CN101524995A (en) * | 2009-04-09 | 2009-09-09 | 吉林大学 | Hybrid power car braking coordinated control system and control method thereof |
| CN101683849A (en) * | 2008-09-28 | 2010-03-31 | 比亚迪股份有限公司 | Braking vacuum servo force system and braking vacuum servo force control method |
| CN101927761A (en) * | 2010-09-29 | 2010-12-29 | 重庆长安汽车股份有限公司 | Vacuum boosting braking system for pure electric vehicle and control method |
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| JP2973076B2 (en) * | 1994-03-16 | 1999-11-08 | 本田技研工業株式会社 | Electric pump control device |
| JP3332651B2 (en) * | 1995-04-28 | 2002-10-07 | ダイハツ工業株式会社 | Pump control method for negative pressure brake |
-
2011
- 2011-06-07 DE DE201110077107 patent/DE102011077107A1/en active Pending
-
2012
- 2012-06-04 FR FR1255143A patent/FR2976241A1/en not_active Withdrawn
- 2012-06-05 JP JP2012128108A patent/JP6001337B2/en active Active
- 2012-06-06 CN CN201210184003.6A patent/CN102815290B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0618114A1 (en) * | 1993-04-02 | 1994-10-05 | Société Anonyme dite: REGIE NATIONALE DES USINES RENAULT | Brake system and piezo-driven pump |
| CN201056206Y (en) * | 2007-07-20 | 2008-05-07 | 蒋中林 | Safety brake compensating gear |
| CN101683849A (en) * | 2008-09-28 | 2010-03-31 | 比亚迪股份有限公司 | Braking vacuum servo force system and braking vacuum servo force control method |
| CN101524995A (en) * | 2009-04-09 | 2009-09-09 | 吉林大学 | Hybrid power car braking coordinated control system and control method thereof |
| CN101927761A (en) * | 2010-09-29 | 2010-12-29 | 重庆长安汽车股份有限公司 | Vacuum boosting braking system for pure electric vehicle and control method |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697347A (en) * | 2014-12-11 | 2016-06-22 | 现代自动车株式会社 | Method and system for controlling electrical vacuum pump |
| CN105697347B (en) * | 2014-12-11 | 2018-08-31 | 现代自动车株式会社 | Method and system for controlling electric vacuum pump |
| CN106274880A (en) * | 2016-08-31 | 2017-01-04 | 北京新能源汽车股份有限公司 | A kind of brake boost control system and brake boost control method |
| CN106274880B (en) * | 2016-08-31 | 2019-01-01 | 北京新能源汽车股份有限公司 | A kind of brake boost control system and brake boost control method |
| CN106544725A (en) * | 2016-10-17 | 2017-03-29 | 镇江荣德新能源科技有限公司 | Device is saved in a kind of polycrystalline furnace vacuum pump failure bridging |
| CN108644096A (en) * | 2018-04-27 | 2018-10-12 | 北京新能源汽车股份有限公司 | Vacuum pump control system and vehicle for vehicle |
| CN108644096B (en) * | 2018-04-27 | 2019-11-22 | 北京新能源汽车股份有限公司 | Vacuum pump control system and vehicle for vehicle |
| CN113085814A (en) * | 2020-01-09 | 2021-07-09 | 瀚德万安(上海)电控制动系统有限公司 | Braking system of vehicle |
| CN115175836A (en) * | 2020-02-26 | 2022-10-11 | 大陆汽车科技有限公司 | Vacuum power-assisted brake system with redundancy |
| CN111959472A (en) * | 2020-08-31 | 2020-11-20 | 安徽江淮汽车集团股份有限公司 | Electric automobile vacuum pump redundancy control system and method and electric automobile |
| CN112677950A (en) * | 2021-01-12 | 2021-04-20 | 精诚工科汽车系统有限公司 | Brake control method, device and system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2976241A1 (en) | 2012-12-14 |
| JP2012254788A (en) | 2012-12-27 |
| DE102011077107A1 (en) | 2012-12-13 |
| JP6001337B2 (en) | 2016-10-05 |
| CN102815290B (en) | 2017-03-01 |
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