CN113500985A - Brake gap pre-filling control method, brake gap pre-filling control equipment, storage medium and brake gap pre-filling control device - Google Patents
Brake gap pre-filling control method, brake gap pre-filling control equipment, storage medium and brake gap pre-filling control device Download PDFInfo
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- CN113500985A CN113500985A CN202110895175.3A CN202110895175A CN113500985A CN 113500985 A CN113500985 A CN 113500985A CN 202110895175 A CN202110895175 A CN 202110895175A CN 113500985 A CN113500985 A CN 113500985A
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- brake
- filling
- working state
- brake gap
- gap pre
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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
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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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/025—Electrically controlled valves
Abstract
The invention discloses a brake clearance pre-filling control method, brake clearance pre-filling control equipment, a storage medium and a brake clearance pre-filling control device, wherein the method comprises the steps of obtaining the current working state of a target vehicle; judging whether the current working state meets a brake clearance pre-filling triggering condition or not; when the current operating state meets the brake gap pre-fill triggering condition, the brake pressure is pre-filled into the brake system. When the current working state meets the pre-filling triggering condition of the brake clearance, the brake pressure is pre-filled into the brake system to reduce the air clearance between the brake disc and the brake friction plate, and if the brake pedal is stepped down again, effective brake pressure can be generated immediately, so that the brake response time and the time for achieving the target deceleration are shortened.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a brake gap pre-filling control method, brake gap pre-filling control equipment, a brake gap pre-filling storage medium and a brake gap pre-filling device.
Background
With the development of social economy, automobiles have become inseparable partners of human beings, the safety and reliability of automobiles are always the key points of attention of people, and accordingly, researches on the active safety performance of automobiles and the application of new technologies are changed from one day to another.
The braking system is an important guarantee for the safe driving of the automobile, the running automobile can be decelerated and stopped within a short distance, the stability of the driving direction is maintained, the quality of the braking performance is directly related to traffic safety and personal and property safety, and serious traffic accidents are often related to the condition that the braking distance of the automobile is too long and the like.
The brake gap prefill is based on an active safety technique for the vehicle on an ESC (Electronic Stability Control). When a driver releases an accelerator pedal quickly during vehicle running, the accelerator pedal signal is transmitted to an ESC system through a vehicle CAN Network (Controller Area Network) to be judged, active pressure building is carried out through a motor of the ESC system, a brake pipeline is pre-charged through a related control valve, certain brake pressure is added to four brake wheel cylinders, so that an air gap between a brake disc and a friction disc is reduced, and further response time generated by subsequent effective brake force is shortened and time for achieving target deceleration is shortened.
The working principle of a traditional front and rear disc brake (comprising a brake caliper and a brake disc) is as follows: when a driver steps on a brake pedal to decelerate and brake a running vehicle, the pedal force of the driver is boosted and amplified by an actuating device (such as a vacuum booster) and converted into hydraulic pressure, the hydraulic pressure is transmitted through a brake pipeline to push pistons of four brake wheel cylinders, and the pistons push friction plates so that the friction plates clamp a brake disc to generate a braking effect; when a driver releases a brake pedal, the wheel cylinder piston is actively returned under the action of an active return part in the brake, and then the friction plate is returned along with the end face jumping of the rotary motion of the brake disc, so that an air gap exists between the brake disc and the friction plate. As shown in fig. 1, when the driver brakes and decelerates again, especially when emergency braking is required in an emergency, the air gap consumes a certain pedal stroke of the driver, so that the friction plate can contact with the brake disc to generate a braking effect, and the air gap affects the response time of the braking force, sacrifices a certain deceleration effect, and further causes the braking distance to become longer.
Therefore, a brake gap pre-filling control method, apparatus, storage medium and device are needed.
Disclosure of Invention
An object of the present invention is to provide a brake gap prefill control method, apparatus, storage medium and device, which can solve the above-mentioned problems in the prior art, and can shorten the brake response time and the time to reach the target deceleration, so as to improve the braking performance of the vehicle.
The invention provides a brake gap pre-filling control method, which comprises the following steps:
acquiring the current working state of a target vehicle;
judging whether the current working state meets a brake clearance pre-filling triggering condition or not;
pre-filling brake pressure into the brake system when the current operating condition satisfies a brake gap pre-fill trigger condition.
The brake gap pre-charge control method as described above, wherein preferably the current operating state of the target vehicle includes at least one of an engine speed, an engine torque, a current vehicle speed, an accelerator opening degree, and a steering wheel angle.
The brake gap pre-filling control method as described above, wherein preferably, determining whether the current operating state satisfies the brake gap pre-filling triggering condition by the following method specifically includes:
when rapid accelerator pedal release is monitored through accelerator pedal rate, it is determined that the current operating condition satisfies a brake gap pre-fill trigger condition.
The brake gap pre-filling control method as described above, wherein preferably, the pre-filling the brake pressure into the brake system when the current operating state meets the brake gap pre-filling triggering condition includes:
and when the current working state meets a brake clearance pre-filling triggering condition, starting an electronic stability system to enable the electronic stability system to actively build pressure so as to pre-fill brake pressure into the brake system.
The brake gap pre-filling control method as described above, wherein preferably, when the current operating state meets a brake gap pre-filling triggering condition, the starting the electronic stability system to enable the electronic stability system to actively build pressure so as to pre-fill the brake pressure into the brake system, specifically includes:
after the electronic stabilizing system is started, the motor is controlled to build pressure actively, and the electronic stabilizing system increases the internal pressure of a brake pipeline through an internal control valve and the pressure building process of the motor, pushes pistons of four brake wheel cylinders to move, and eliminates air gaps between the friction plates and the brake disc.
The brake gap pre-charge control method as described above, wherein preferably the brake gap pre-charge control method further includes:
and returning to the step of acquiring the current working state of the target vehicle when the current working state does not meet the brake gap pre-filling triggering condition.
The brake gap pre-charge control method as described above, wherein preferably the brake gap pre-charge control method further includes:
and returning to the step of acquiring the current working state of the target vehicle after the current working state meets the brake gap pre-filling triggering condition and the driver finishes stepping on the brake pedal to perform deceleration braking.
The present invention also provides a brake gap pre-fill control apparatus comprising: a memory, a processor and a brake gap pre-fill control program stored on the memory and running on the processor, the brake gap pre-fill control program when executed by the processor implementing the steps of the brake gap pre-fill control method described above.
The present invention also provides a storage medium having a brake gap pre-fill control program stored thereon, which when executed by a processor implements the steps of the brake gap pre-fill control method described above.
The present invention also provides a brake gap pre-fill control device comprising:
the acquisition module is used for acquiring the current working state of the target vehicle;
the judging module is used for judging whether the current working state meets a brake clearance pre-filling triggering condition or not;
the starting module is used for starting the electronic stabilizing system when the current working state meets a brake clearance pre-filling triggering condition so as to enable the electronic stabilizing system to actively build pressure;
and the monitoring module is used for monitoring whether the electronic stability system is correctly pressurized and maintains the pressure when the electronic stability system is actively pressurized in the current working state until a driver finishes stepping on a brake pedal to perform deceleration braking operation, and the electronic stability system performs pressure relief and enters the next cycle.
The invention provides a brake clearance pre-filling control method, equipment, a storage medium and a device, when the current working state meets the brake clearance pre-filling triggering condition, the brake pressure is pre-filled into a brake system to reduce the air clearance between a brake disc and a brake friction plate, and then if a brake pedal is stepped down again, effective brake pressure can be generated immediately, so that the brake response time and the time for achieving the target deceleration are shortened; the system can realize vehicle state acquisition, automatic judgment, automatic pressurization and pressure relief, and improves the safety of automobile braking through the pre-filling control of the braking gap.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a caliper air gap of a conventional front and rear disc brake;
FIG. 2 is a flow chart of an embodiment of a brake gap pre-fill control method provided by the present invention;
FIG. 3 is a schematic diagram of an embodiment of a brake gap pre-fill control method provided by the present invention;
FIG. 4 is an air gap elimination diagram of an embodiment of a brake gap pre-charge control method provided by the present invention.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
As used in this disclosure, "first", "second": and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be intervening components between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without having an intervening component, or may be directly connected to the other components without having an intervening component.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
As shown in fig. 2 and fig. 3, in an actual implementation process, the brake gap pre-filling control method provided by the present embodiment specifically includes the following steps:
and step S1, acquiring the current working state of the target vehicle.
Wherein the current operating state of the target vehicle includes at least one of an engine speed, an engine torque, a current vehicle speed, an accelerator opening degree, and a steering wheel angle. In a specific implementation, a vehicle electronic stability control system (ESC) monitors the current working state of a vehicle in real time through a CAN bus.
And step S2, judging whether the current working state meets the brake clearance pre-filling triggering condition.
Judging whether the current working state meets a brake clearance pre-filling triggering condition or not by the following method, specifically comprising the following steps:
when rapid accelerator pedal release is monitored through accelerator pedal rate, it is determined that the current operating condition satisfies a brake gap pre-fill trigger condition. The rapid accelerator release may indirectly indicate that the driver suddenly and rapidly drops the accelerator pedal and moves the sole to step on the brake pedal, and then step S3 may be executed. It should be noted that the accelerator pedal speed satisfying the brake gap prefill triggering condition may be set according to the vehicle condition, and the present invention is not particularly limited thereto.
Step S3, pre-filling brake pressure into the brake system when the current operating state satisfies a brake gap pre-fill trigger condition.
Specifically, when the current working state meets a brake clearance pre-filling triggering condition, an electronic stability system is started, so that the electronic stability system performs active pressure build-up to pre-fill brake pressure into a brake system.
In an embodiment of the brake gap pre-filling control method of the present invention, the step S3 may specifically include:
after the electronic stabilizing system is started, the motor is controlled to build pressure actively, the electronic stabilizing system increases the internal pressure of a brake pipeline through an internal control valve and the pressure building process of the motor, and pushes pistons of four brake wheel cylinders to move so as to eliminate air gaps between friction plates and a brake disc (see figure 4), so that a driver can finish stepping on a brake pedal to perform deceleration braking, the braking response time is shortened, the time for achieving the target deceleration is shortened, and the aim of improving the braking performance of the automobile is fulfilled. In this case, the number of the internal control valves is two, and the internal control valves are a first-circuit control valve and a second-circuit control valve, respectively, and each internal control valve controls the piston movement of two brake wheel cylinders.
Further, in some embodiments of the present invention, the brake gap pre-fill control method further comprises:
and returning to the step of acquiring the current working state of the target vehicle when the current working state does not meet the brake gap pre-filling triggering condition.
Still further, in some embodiments of the present invention, the brake gap pre-fill control method further comprises:
and returning to the step of acquiring the current working state of the target vehicle after the current working state meets the brake gap pre-filling triggering condition and the driver finishes stepping on the brake pedal to perform deceleration braking.
According to the brake gap pre-filling control method provided by the embodiment of the invention, when the current working state meets the brake gap pre-filling triggering condition, the brake pressure is pre-filled into the brake system to reduce the air gap between the brake disc and the brake friction plate, and then if the brake pedal is stepped down again, the effective brake pressure can be generated immediately, so that the brake response time is shortened and the time for achieving the target deceleration is shortened; the system can realize vehicle state acquisition, automatic judgment, automatic pressurization and pressure relief, and improves the safety of automobile braking through the pre-filling control of the braking gap.
Accordingly, the present invention also provides a brake gap pre-fill control apparatus comprising: a memory, a processor and a brake gap pre-fill control program stored on the memory and running on the processor, the brake gap pre-fill control program when executed by the processor implementing the steps of the brake gap pre-fill control method described above.
The present invention also provides a storage medium having a brake gap pre-fill control program stored thereon, which when executed by a processor implements the steps of the brake gap pre-fill control method described above.
The present invention also provides a brake gap pre-fill control device comprising:
the acquisition module is used for acquiring the current working state of the target vehicle;
the judging module is used for judging whether the current working state meets a brake clearance pre-filling triggering condition or not;
the starting module is used for starting the electronic stabilizing system when the current working state meets a brake clearance pre-filling triggering condition so as to enable the electronic stabilizing system to actively build pressure;
and the monitoring module is used for monitoring whether the electronic stability system is correctly pressurized and maintains the pressure when the electronic stability system is actively pressurized in the current working state until a driver finishes stepping on a brake pedal to perform deceleration braking operation, and the electronic stability system performs pressure relief and enters the next cycle.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A brake gap pre-fill control method, comprising:
acquiring the current working state of a target vehicle;
judging whether the current working state meets a brake clearance pre-filling triggering condition or not;
pre-filling brake pressure into the brake system when the current operating condition satisfies a brake gap pre-fill trigger condition.
2. The brake gap pre-fill control method of claim 1, wherein the current operating state of the target vehicle includes at least one of an engine speed, an engine torque, a current vehicle speed, an accelerator opening, and a steering wheel angle.
3. The brake gap pre-filling control method according to claim 1, wherein determining whether the current operating state satisfies a brake gap pre-filling trigger condition by:
when rapid accelerator pedal release is monitored through accelerator pedal rate, it is determined that the current operating condition satisfies a brake gap pre-fill trigger condition.
4. The brake gap pre-fill control method according to claim 1, wherein the pre-filling the brake pressure into the brake system when the current operating state satisfies a brake gap pre-fill trigger condition specifically comprises:
and when the current working state meets a brake clearance pre-filling triggering condition, starting an electronic stability system to enable the electronic stability system to actively build pressure so as to pre-fill brake pressure into the brake system.
5. The brake gap pre-filling control method according to claim 4, wherein when the current working state meets a brake gap pre-filling triggering condition, the electronic stability system is started to actively build pressure to pre-fill brake pressure into the brake system, and specifically comprises:
after the electronic stabilizing system is started, the motor is controlled to build pressure actively, and the electronic stabilizing system increases the internal pressure of a brake pipeline through an internal control valve and the pressure building process of the motor, pushes pistons of four brake wheel cylinders to move, and eliminates air gaps between the friction plates and the brake disc.
6. The brake gap pre-fill control method of claim 1, further comprising:
and returning to the step of acquiring the current working state of the target vehicle when the current working state does not meet the brake gap pre-filling triggering condition.
7. The brake gap pre-fill control method of claim 1, further comprising:
and returning to the step of acquiring the current working state of the target vehicle after the current working state meets the brake gap pre-filling triggering condition and the driver finishes stepping on the brake pedal to perform deceleration braking.
8. A brake gap pre-fill control apparatus, comprising: memory, a processor and a brake gap pre-fill control program stored on the memory and running on the processor, which when executed by the processor implements the steps of the brake gap pre-fill control method of any one of claims 1 to 7.
9. A storage medium having stored thereon a brake gap pre-fill control program that, when executed by a processor, implements the steps of a brake gap pre-fill control method according to any one of claims 1 to 7.
10. A brake gap pre-fill control device, comprising:
the acquisition module is used for acquiring the current working state of the target vehicle;
the judging module is used for judging whether the current working state meets a brake clearance pre-filling triggering condition or not;
the starting module is used for starting the electronic stabilizing system when the current working state meets a brake clearance pre-filling triggering condition so as to enable the electronic stabilizing system to actively build pressure;
and the monitoring module is used for monitoring whether the electronic stability system is correctly pressurized and maintains the pressure when the electronic stability system is actively pressurized in the current working state until a driver finishes stepping on a brake pedal to perform deceleration braking operation, and the electronic stability system performs pressure relief and enters the next cycle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110895175.3A CN113500985A (en) | 2021-08-03 | 2021-08-03 | Brake gap pre-filling control method, brake gap pre-filling control equipment, storage medium and brake gap pre-filling control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110895175.3A CN113500985A (en) | 2021-08-03 | 2021-08-03 | Brake gap pre-filling control method, brake gap pre-filling control equipment, storage medium and brake gap pre-filling control device |
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| CN113500985A true CN113500985A (en) | 2021-10-15 |
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| CN202110895175.3A Pending CN113500985A (en) | 2021-08-03 | 2021-08-03 | Brake gap pre-filling control method, brake gap pre-filling control equipment, storage medium and brake gap pre-filling control device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114451151A (en) * | 2021-12-27 | 2022-05-10 | 南京苏美达智能技术有限公司 | Emergency stop control system and control method for hybrid mower |
| CN114537351A (en) * | 2021-12-07 | 2022-05-27 | 上海拿森汽车电子有限公司 | Method and system for eliminating disc clearance |
| CN114537358A (en) * | 2021-12-03 | 2022-05-27 | 上海拿森汽车电子有限公司 | Vehicle brake clearance compensation method and device and computer storage medium |
| CN114771484A (en) * | 2022-06-06 | 2022-07-22 | 东风汽车有限公司东风日产乘用车公司 | Vehicle brake control method, vehicle, and storage medium |
| CN114802136A (en) * | 2022-05-24 | 2022-07-29 | 江铃汽车股份有限公司 | Control method for improving response time of electronic mechanical brake system |
| CN115123161A (en) * | 2022-06-24 | 2022-09-30 | 东风汽车有限公司东风日产乘用车公司 | Vehicle control method, vehicle, and storage medium |
| CN117162976A (en) * | 2023-09-08 | 2023-12-05 | 无锡车联天下信息技术有限公司 | Vehicle braking control method and device, electronic equipment and storage medium |
| CN117162976B (en) * | 2023-09-08 | 2024-05-03 | 无锡车联天下信息技术有限公司 | Vehicle braking control method and device, electronic equipment and storage medium |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114537358A (en) * | 2021-12-03 | 2022-05-27 | 上海拿森汽车电子有限公司 | Vehicle brake clearance compensation method and device and computer storage medium |
| CN114537351A (en) * | 2021-12-07 | 2022-05-27 | 上海拿森汽车电子有限公司 | Method and system for eliminating disc clearance |
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| CN117162976A (en) * | 2023-09-08 | 2023-12-05 | 无锡车联天下信息技术有限公司 | Vehicle braking control method and device, electronic equipment and storage medium |
| CN117162976B (en) * | 2023-09-08 | 2024-05-03 | 无锡车联天下信息技术有限公司 | Vehicle braking control method and device, electronic equipment and storage medium |
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Application publication date: 20211015 |