CN116373827A - Braking method for realizing zero drag of braking system - Google Patents
Braking method for realizing zero drag of braking system Download PDFInfo
- Publication number
- CN116373827A CN116373827A CN202211361960.1A CN202211361960A CN116373827A CN 116373827 A CN116373827 A CN 116373827A CN 202211361960 A CN202211361960 A CN 202211361960A CN 116373827 A CN116373827 A CN 116373827A
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- caliper
- wheel end
- piston
- calipers
- braking
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
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
- B60T13/74—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 electrical assistance or drive
- B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a braking method for realizing zero drag of a braking system, which is characterized in that the pressure in a wheel end clamp is changed by controlling the work of a booster cylinder and the opening and closing of a liquid outlet valve, so that a caliper piston is moved, zero drag of the braking system is realized, the smaller pressure generated by the booster cylinder is transmitted to the wheel end clamp to eliminate the clearance of the caliper piston, the liquid amount required by the braking system is prevented from increasing, the use of the liquid amount is effectively reduced, the loss is reduced, the structure is simple, and the use is convenient.
Description
Technical Field
The invention relates to the technical field of automobile brake control, in particular to a braking method for realizing zero drag of a braking system.
Background
The automobile braking system includes calipers, an electric control hydraulic braking system braking main cylinder for controlling hydraulic distribution, a booster, an electronic vacuum pump and a braking pedal. After the driver presses the brake pedal, the brake fluid of the brake master cylinder enters the caliper, and after the driver withdraws the brake pedal, the brake fluid of the caliper returns to the master cylinder, and the process comprises the brake pressurization of the pedal and the brake pressurization of the withdrawal pedal. The system has a ubiquitous phenomenon at present, when a driver presses a brake pedal to pressurize a caliper, and the brake pressurization needs to be released, even if the driver completely withdraws the brake pedal, the caliper still has a dragging moment on wheels, and the dragging moment has a non-negligible influence on the oil consumption of an automobile. With the development of new energy technology and braking technology of automobiles, the automobiles pay more attention to drag torque after braking is finished.
Patent number CN110116718A discloses a hydraulic brake system by wire, a friction plate return spring with a larger force value than that of a traditional caliper is arranged on a wheel end caliper to reduce the braking torque after braking, but the friction plate return spring with the larger force value can increase the braking liquid amount required by the caliper for braking, patent number CN110566612a discloses a structure and a working method for reducing the braking torque of an automobile brake caliper, an electromagnetic valve is arranged between a booster cylinder and a liquid storage tank, negative pressure is generated on the booster cylinder through the electromagnetic valve, and the negative pressure can enable the external atmospheric pressure to act on the caliper piston on the caliper to move, so that zero braking is realized. However, the negative pressure can increase the liquid amount required by the caliper while realizing zero drag of the brake system, so that the liquid amount required by the brake system is influenced, and the consumption of the brake liquid is large, so that the problem is very important to be solved.
Disclosure of Invention
The invention aims to provide a braking method for realizing zero drag of a braking system, which is characterized in that a pressure cylinder is used for carrying out pressure control on wheel end clamping pliers for a plurality of times, so that a caliper piston in the wheel end clamping pliers moves and resets under the action of pressure, and the problem of more consumption of brake fluid required by caliper braking in the background art is solved.
The invention provides a braking method for realizing zero drag of a braking system, which comprises the following steps:
step one, controlling a pressurizing cylinder and a liquid outlet valve to be opened through an ECU controller, controlling the pressure in the wheel end clamping pliers, and enabling a caliper piston in the wheel end clamping pliers to move, so that extremely low dragging moment or zero dragging is realized;
and secondly, controlling the booster cylinder to apply braking hydraulic pressure to the inside of the wheel end calipers through the ECU controller, wherein the force of the hydraulic pressure on the calipers is 100-200N, so that the calipers pistons in the wheel end calipers move to eliminate gaps.
After the two steps, the caliper piston returns under the action of the rectangular sealing ring in the caliper, the dragging moment of the final caliper is extremely low, and the liquid amount required by the caliper is not increased.
The further improvement is that: the wheel end clamping pliers are arranged in a group, the wheel end clamping pliers are provided with a plurality of groups, and one of the wheel end calipers of each group is an electric control calipers.
The further improvement is that: the caliper piston in the wheel end caliper of the electric control caliper moves without being influenced by pressure through the motor control action of the motor caliper, and the caliper piston in the wheel end caliper of the non-electric control caliper moves under the influence of pressure.
The further improvement is that: in the first step, the pressurizing cylinder and the liquid outlet valve are controlled by the ECU controller to sequentially act.
The further improvement is that: the pressurizing cylinder and the liquid outlet valve sequentially act, so that negative pressure is generated in the wheel end clamping pliers, and the caliper piston is driven to move by the negative pressure.
The further improvement is that: and in the second step, the caliper piston in the wheel end caliper applies smaller brake hydraulic pressure through the booster cylinder, so that the caliper piston in the wheel end caliper, the friction plate and the brake disc are propped against each other, and the position of the caliper piston is restored.
The invention has the beneficial effects that: 1. according to the invention, the pressurizing cylinder and the liquid outlet valve are controlled to sequentially work, so that zero dragging of the braking system requirement is realized in a mode of generating negative pressure in the wheel end clamp, and an additional structure of the wheel end clamp is not increased; through the work of the pressurizing cylinder and the opening and closing of the liquid outlet valve, negative pressure is generated in the inner cavity of the wheel end clamping pliers, the caliper piston moves back under the action of the negative pressure, friction between the friction plate and the brake disc is reduced, zero dragging of the brake system is realized, the service life of the brake system is prolonged, and energy is saved and consumption is reduced.
2. According to the invention, after the caliper piston in the wheel end caliper is moved and reset, the pressurizing cylinder is controlled to apply smaller brake hydraulic pressure into the wheel end caliper, the caliper piston is pushed to return further by the brake hydraulic pressure, so that the caliper piston, the friction plate and the brake disc are lightly abutted, a gap generated by driving the caliper piston to move by negative pressure is eliminated, the use of brake fluid is reduced by reducing the gap, the problem of increasing the liquid amount required by a brake system caused by negative pressure is avoided, the energy consumption is reduced, the energy is saved, the consumption is reduced, and the resource utilization rate is improved.
3. According to the invention, the ECU controller controls the booster cylinder and the liquid outlet valve to sequentially work, so that the pressure control is performed on the booster cylinder, and then the opening and closing of the liquid outlet valve are controlled, so that negative pressure is generated in the inner cavity of the wheel end clamping pliers to drive the caliper piston to move, the dragging moment is reduced, the friction is reduced, and the energy consumption is reduced.
4. According to the invention, the wheel end calipers are used together by adopting the electric calipers and the common calipers, and the electric calipers are used for maintaining the calipers piston of the wheel end calipers to move without being influenced by negative pressure, so that the common calipers can not maintain the calipers piston, and the calipers piston can move under the negative pressure, thereby realizing zero dragging of a braking system, reducing resistance and reducing energy consumption.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Wherein: the hydraulic device comprises a 1-motor, a 2-motor, a 3-pressurizing cylinder, a 4-liquid storage cylinder, a 5-first wheel end clamping clamp, a 6-second wheel end clamping clamp, a 7-third wheel end clamping clamp, an 8-fourth wheel end clamping clamp, a 9-first liquid outlet valve, a 10-second liquid outlet valve, a 11-third liquid outlet valve and a 12-fourth liquid outlet valve.
Detailed Description
The present invention will be further described in detail with reference to examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
As shown in fig. 1, the embodiment provides a braking system for realizing zero drag of the braking system, which comprises a braking system, wherein the braking system comprises an ECU (electronic control unit) controller 1, a motor 2, a booster cylinder 3, a liquid outlet valve, a liquid storage tank 4 and wheel end calipers; the ECU controller 2 is through motor 2 control boost jar 3 work, boost jar 3 is connected with wheel end callipers through oil circuit pipeline, wheel end callipers are equipped with four, be first wheel end calliper 5, second wheel end calliper 6, third wheel end calliper 7, fourth wheel end calliper 8 respectively, first wheel end calliper 5 is a set of with second wheel end calliper 6, third wheel end calliper 7 is a set of with fourth wheel end calliper 8, first wheel end calliper 5 and third wheel end calliper 7 are electric caliper structure, second wheel end calliper 6 and fourth wheel end calliper 8 are ordinary calliper structure.
The first wheel end calipers 5, the second wheel end calipers 6, the third wheel end calipers 7 and the fourth wheel end calipers 8 are respectively connected with the liquid storage tank 4 through oil-way pipelines, liquid outlet valves are arranged between the wheel end calipers and the liquid storage tank 4, the number of the liquid outlet valves corresponding to the wheel end calipers is four, the number of the liquid outlet valves is respectively a first liquid outlet valve 9, a second liquid outlet valve 10, a third liquid outlet valve 11 and a fourth liquid outlet valve 12, and the first liquid outlet valve 9, the second liquid outlet valve 10, the third liquid outlet valve 11 and the fourth liquid outlet valve 12 are respectively connected with the first wheel end calipers 5, the second wheel end calipers 6, the third wheel end calipers 7 and the fourth wheel end calipers 8; the liquid outlet valve is electrically connected with the ECU controller 1.
The braking method for realizing zero drag of the braking system by the braking system comprises the following steps:
s1: when the vehicle is required to be braked, the motor is controlled by the ECU controller to drive the booster cylinder 3, and then the first liquid outlet valve 9, the second liquid outlet valve 10, the third liquid outlet valve 11 and the fourth liquid outlet valve 12 are controlled to open and close;
s2: the negative pressure is generated in the inner cavity of the wheel end clamping pliers through the work of the pressurizing cylinder 3 and the opening and closing of the liquid outlet valve;
s3: the first wheel end clamping pliers 5 and the third wheel end clamping pliers 7 are of an electric caliper structure, the positions of caliper pistons are not affected by negative pressure to cause movement through electric control of the electric control calipers, the second wheel end clamping pliers 6 and the fourth wheel end clamping pliers 8 are of a common caliper structure, and the positions of the caliper pistons are affected by the negative pressure to move and retract, so that zero dragging of a braking system is realized;
s4: after the positions of caliper pistons in the second wheel end clamping pliers 6 and the fourth wheel end calipers 8 move under negative pressure, the ECU controller controls the motor to drive the pressurizing cylinder 3, and smaller brake hydraulic pressure is applied to the second wheel end clamping pliers 6 and the fourth wheel end calipers 8, wherein the brake hydraulic pressure is 0.5MPa;
s5: through the application of brake fluid pressure, the caliper piston, the friction plate and the brake disc are lightly propped against, so that the positions of the caliper pistons in the second wheel end clamp 6 and the fourth wheel end clamp 8 are recovered, the excessive increase of the liquid amount required by the wheel end clamp is avoided, and the energy-saving effect of the whole vehicle is realized.
Claims (7)
1. The invention provides a braking method for realizing zero drag of a braking system, which comprises the following steps:
step one, controlling a pressurizing cylinder and a liquid outlet valve to be opened through an ECU controller, controlling the pressure in the wheel end clamping pliers, and enabling a caliper piston in the wheel end clamping pliers to move, so that extremely low dragging moment or zero dragging is realized;
and secondly, controlling the booster cylinder to apply braking hydraulic pressure to the inside of the wheel end calipers through the ECU controller, wherein the force of the hydraulic pressure on the caliper piston is 100-200N, so that the caliper piston in the wheel end calipers moves to eliminate a gap.
2. After the two steps, the caliper piston returns under the action of the rectangular sealing ring in the caliper, the dragging moment of the final caliper is extremely low, and the liquid amount required by the caliper is not increased.
3. The further improvement is that: the wheel end clamping pliers are arranged in a group, the wheel end clamping pliers are provided with a plurality of groups, and one of the wheel end calipers of each group is an electric control calipers.
4. The further improvement is that: the caliper piston in the wheel end caliper of the electric control caliper moves without being influenced by pressure through the motor control action of the motor caliper, and the caliper piston in the wheel end caliper of the non-electric control caliper moves under the influence of pressure.
5. The further improvement is that: in the first step, the pressurizing cylinder and the liquid outlet valve are controlled by the ECU controller to sequentially act.
6. The further improvement is that: the pressurizing cylinder and the liquid outlet valve sequentially act, so that negative pressure is generated in the wheel end clamping pliers, and the caliper piston is driven to move by the negative pressure.
7. The further improvement is that: and in the second step, the caliper piston in the wheel end caliper applies smaller brake hydraulic pressure through the booster cylinder, so that the caliper piston in the wheel end caliper, the friction plate and the brake disc are propped against each other, and the position of the caliper piston is restored.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211361960.1A CN116373827A (en) | 2022-11-02 | 2022-11-02 | Braking method for realizing zero drag of braking system |
| PCT/CN2023/126115 WO2024093716A1 (en) | 2022-11-02 | 2023-10-24 | Braking method for realizing zero drag of braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211361960.1A CN116373827A (en) | 2022-11-02 | 2022-11-02 | Braking method for realizing zero drag of braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116373827A true CN116373827A (en) | 2023-07-04 |
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ID=86973661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211361960.1A Pending CN116373827A (en) | 2022-11-02 | 2022-11-02 | Braking method for realizing zero drag of braking system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116373827A (en) |
| WO (1) | WO2024093716A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093716A1 (en) * | 2022-11-02 | 2024-05-10 | 芜湖伯特利电子控制系统有限公司 | Braking method for realizing zero drag of braking system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2928890B1 (en) * | 2008-03-20 | 2015-03-06 | Peugeot Citroen Automobiles Sa | STABILITY AND TRACK CONTROL SYSTEM OF A MOTOR VEHICLE USING AN ACTIVE SERVOFREIN |
| KR101518880B1 (en) * | 2009-08-26 | 2015-05-15 | 현대자동차 주식회사 | Control method of brake drag reducing device for vehicle |
| KR101510419B1 (en) * | 2013-08-08 | 2015-04-14 | 주식회사 만도 | Device for reduction of brake drag using electronic stability control system and method for reduction thereof |
| CN207830415U (en) * | 2018-01-19 | 2018-09-07 | 北京车和家信息技术有限公司 | Calipers assembly, braking system and mechanical equipment |
| CN114684091B (en) * | 2020-12-31 | 2023-04-07 | 长城汽车股份有限公司 | Vehicle brake dragging auxiliary return control method and device and automobile |
| CN113928285B (en) * | 2021-09-30 | 2022-09-16 | 浙江吉利控股集团有限公司 | Method for reducing drag torque of brake |
| CN116373827A (en) * | 2022-11-02 | 2023-07-04 | 芜湖伯特利电子控制系统有限公司 | Braking method for realizing zero drag of braking system |
-
2022
- 2022-11-02 CN CN202211361960.1A patent/CN116373827A/en active Pending
-
2023
- 2023-10-24 WO PCT/CN2023/126115 patent/WO2024093716A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024093716A1 (en) * | 2022-11-02 | 2024-05-10 | 芜湖伯特利电子控制系统有限公司 | Braking method for realizing zero drag of braking system |
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| Publication number | Publication date |
|---|---|
| WO2024093716A1 (en) | 2024-05-10 |
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