CN113232635A - Gas-cap-liquid braking system, gas-cap-liquid braking method and vehicle - Google Patents

Gas-cap-liquid braking system, gas-cap-liquid braking method and vehicle Download PDF

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Publication number
CN113232635A
CN113232635A CN202110618531.7A CN202110618531A CN113232635A CN 113232635 A CN113232635 A CN 113232635A CN 202110618531 A CN202110618531 A CN 202110618531A CN 113232635 A CN113232635 A CN 113232635A
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CN
China
Prior art keywords
air pressure
brake
electromagnetic valve
hydraulic
abs electromagnetic
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Pending
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CN202110618531.7A
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Chinese (zh)
Inventor
王磊
邴建
席玉岭
张春广
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BAIC Group ORV Co ltd
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BAIC Group ORV Co ltd
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Priority to CN202110618531.7A priority Critical patent/CN113232635A/en
Publication of CN113232635A publication Critical patent/CN113232635A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T13/00Transmitting 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
    • B60T13/10Transmitting 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
    • B60T13/66Electrical control in fluid-pressure brake systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T13/00Transmitting 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
    • B60T13/10Transmitting 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
    • B60T13/66Electrical control in fluid-pressure brake systems
    • B60T13/68Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T13/00Transmitting 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
    • B60T13/74Transmitting 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
    • B60T13/745Transmitting 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T15/00Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02Application and release valves
    • B60T15/18Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
    • B60T15/20Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere controlled by two fluid pressures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17Using electrical or electronic regulation means to control braking
    • B60T8/176Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17Using electrical or electronic regulation means to control braking
    • B60T8/176Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
    • B60T8/1761Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure

Abstract

The embodiment of the application discloses pneumatic-hydraulic brake system, pneumatic-hydraulic brake method and vehicle, and the pneumatic-hydraulic brake system is characterized in that air pressure and hydraulic pressure are combined together, and small air pressure input is amplified and converted into large hydraulic pressure output, so that sufficient braking force is obtained, and the pneumatic-hydraulic brake system is suitable for safety braking of large vehicles of N3 type and M3 type. The braking safety device is simple in structure, light in weight, safe, reliable, fast in response speed and wide in applicability, and can effectively improve braking safety performance of the large-sized vehicle, shorten braking distance and improve driving safety of the large-sized vehicle.

Description

Gas-cap-liquid braking system, gas-cap-liquid braking method and vehicle
Technical Field
The application relates to the technical field of vehicle braking systems, in particular to a gas cap liquid braking system, a gas cap liquid braking method and a vehicle.
Background
Currently, air braking systems are mostly adopted in large vehicles (such as N3-type and M3-type large vehicles) on the market, air is used as a transmission medium of the air braking systems, the air braking systems are complex in structure, heavy in weight, long in response time and long in efficiency lag time, and due to the reasons, the response time (generally 0.3 s-0.9 s) of the air braking systems is long, the pressure build-up is slow, and the braking distance is long. In addition, the working pressure of the pipeline of the pneumatic braking system is low (0.5-0.7 Mpa) due to sealing reasons, so that the diameter of a braking air chamber is large, the weight of the pneumatic braking system is increased, and the unsprung mass of the pneumatic braking system is increased. In addition, the scheduling noise of the pneumatic brake system also limits the adoption of some special vehicles.
Disclosure of Invention
The embodiment of the application discloses gas cap liquid braking system and gas cap liquid braking method, vehicle, gas cap liquid braking system is applicable to N3 class and M3 class oversize vehicle, and its simple structure, light in weight, safe and reliable, response speed are fast, extensive applicability, can effectively promote oversize vehicle braking security performance, shorten braking distance, improve the oversize vehicle security of traveling.
The embodiment of this application discloses in a first aspect a pneumatic hydraulic brake system, includes:
the air compressor is used for starting to work after the vehicle is started and transmitting high-pressure gas to the air processing unit;
the air processing unit is used for respectively conveying the high-pressure gas to the front axle gas storage cylinder and the rear axle gas storage cylinder;
when a brake pedal is stepped to push a brake master cylinder, the brake master cylinder is used for transmitting the air pressure of a front axle air cylinder to a front axle relay valve and transmitting the air pressure of a rear axle air cylinder to a rear axle relay valve;
the front axle relay valve is used for distributing air pressure to the left front ABS electromagnetic valve and the right front ABS electromagnetic valve; the left front ABS electromagnetic valve is used for transmitting air pressure to the left front booster pump, and the right front ABS electromagnetic valve is used for transmitting air pressure to the right front booster pump; the left front booster pump is used for amplifying and converting air pressure input into hydraulic output according to a first amplification factor and transmitting the hydraulic output to the left front brake so as to enable the left front brake to generate braking force; the right front booster pump is used for amplifying and converting air pressure input into hydraulic output according to the first amplification factor and transmitting the hydraulic output to the right front brake so as to enable the right front brake to generate braking force;
the rear axle relay valve is used for distributing air pressure to the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve; the left rear ABS electromagnetic valve is used for transmitting air pressure to a left rear booster pump, and the right rear ABS electromagnetic valve is used for transmitting air pressure to a right rear booster pump; the left rear booster pump is used for amplifying and converting air pressure input into hydraulic output according to a second amplification factor and transmitting the hydraulic output to the left rear brake so as to enable the left rear brake to generate braking force; the right rear booster pump is used for amplifying and converting air pressure input into hydraulic output according to the second amplification factor and transmitting the hydraulic output to the right rear brake so as to enable the right rear brake to generate braking force; the first magnification is greater than the second magnification;
the ABS regulator is used for regulating the slip rates of the front and rear wheels through the left front ABS electromagnetic valve, the right front ABS electromagnetic valve, the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve so as to realize the optimal braking performance.
As a preferred implementation, in the first aspect of the examples of this application, the first magnification is 20 times; the second magnification is 10 times.
The second aspect of the embodiment of the present application discloses a pneumatic hydraulic brake method, including:
the air compressor starts to work after the vehicle is started and transmits high-pressure gas to the air processing unit;
the air processing unit respectively transmits the high-pressure gas to a front axle gas cylinder and a rear axle gas cylinder;
when a brake pedal is stepped to push a brake master cylinder, the brake master cylinder transmits the air pressure of a front axle air cylinder to a front axle relay valve and transmits the air pressure of a rear axle air cylinder to a rear axle relay valve;
the front axle relay valve distributes air pressure to the left front ABS electromagnetic valve and the right front ABS electromagnetic valve; the left front ABS electromagnetic valve transmits air pressure to the left front booster pump, and the right front ABS electromagnetic valve transmits air pressure to the right front booster pump; the left front booster pump amplifies air pressure input according to a first amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the left front brake so as to enable the left front brake to generate braking force; the right front booster pump amplifies the air pressure input according to the first amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the right front brake so as to enable the right front brake to generate braking force;
the rear axle relay valve distributes air pressure to the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve; the left rear ABS electromagnetic valve transmits air pressure to a left rear booster pump, and the right rear ABS electromagnetic valve transmits air pressure to a right rear booster pump; the left rear booster pump amplifies the air pressure input according to a second amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the left rear brake so as to enable the left rear brake to generate braking force; the right rear booster pump amplifies the air pressure input according to the second amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the right rear brake so as to enable the right rear brake to generate braking force; the first magnification is greater than the second magnification;
the ABS regulator regulates the slip rate of the front and rear wheels through the left front ABS electromagnetic valve, the right front ABS electromagnetic valve, the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve so as to realize the optimal braking performance.
As a preferable mode, in the second aspect of the examples herein, the first magnification is 20 times; the second magnification is 10 times.
A third aspect of embodiments of the present application discloses a vehicle including the pneumatic hydraulic brake system disclosed in the first aspect of embodiments of the present application.
In a second aspect of the embodiment of the present application, the vehicle includes large-sized vehicles of N3 type and M3 type, and special vehicles.
Compared with the prior art, the embodiment of the application has at least the following beneficial effects:
the embodiment of the application breaks through the design limitation of conventional pure air pressure or pure hydraulic pressure products, combines air pressure and hydraulic pressure together, and amplifies and converts small air pressure input into large hydraulic pressure output, so that sufficient braking force is obtained, and the brake device is suitable for the safety braking of large vehicles of N3 type and M3 type. The braking safety device is simple in structure, light in weight, safe, reliable, fast in response speed and wide in applicability, and can effectively improve braking safety performance of the large-sized vehicle, shorten braking distance and improve driving safety of the large-sized vehicle.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a pneumatic hydraulic brake system according to an embodiment of the present disclosure;
fig. 2 is a schematic view of the pneumatic hydraulic brake system shown in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to 2, fig. 1 is a schematic structural diagram of an air-over-hydraulic brake system disclosed in an embodiment of the present application, and fig. 2 is a schematic diagram of the air-over-hydraulic brake system shown in fig. 1. As shown in fig. 1 to 2, the pneumatic hydraulic brake system disclosed in the embodiment of the present application includes:
the brake system comprises an air press 1, an air processing unit 2, a front axle air cylinder 3, a rear axle air cylinder 4, a brake pedal 5, a master brake pump 6, a front axle relay valve 7, a left front ABS electromagnetic valve 8, a right front ABS electromagnetic valve 9, a left front booster pump 10, a right front booster pump 11, a left front brake 12, a right front brake 13, a rear axle relay valve 14, a left rear ABS electromagnetic valve 15, a right rear ABS electromagnetic valve 16, a left rear booster pump 17, a right rear booster pump 18, a left rear brake 19, a right rear brake 20 and an ABS regulator 21; wherein:
the air press 1: means for supplying high pressure gas to a pneumatic hydraulic brake system;
the air processing unit 2: processing high-pressure gas and conveying the high-pressure gas to a front axle gas cylinder 3 and a rear axle gas cylinder 4;
front axle gas receiver 3 and rear axle gas receiver 4: storing air pressure to provide air sources for a relay valve and a brake master cylinder;
brake pedal 5: a brake operating device;
master cylinder 6: when the plunger of the brake pedal 5 pushes the piston of the master cylinder 6, the air pressure is distributed to the front axle relay valve 7 and the rear axle relay valve 14.
Front axle relay valve 7: the air pressure output by the master cylinder 6 is adjusted and distributed to a left front ABS electromagnetic valve 8 and a right front ABS electromagnetic valve 9 (namely distributed to the left and right wheel sides of a front axle);
left front ABS solenoid valve 8 and right front ABS solenoid valve 9: the slip rate of the left wheel and the right wheel of the front axle is detected, and the optimal adhesion coefficient area is adjusted to exert the maximum braking efficiency;
left front booster pump 10, right front booster pump 11: converting the pneumatic input into hydraulic output by a first amplification factor (such as 20 times);
left front brake 12, right front brake 13: the vehicle is decelerated and stopped by generating braking force by clamping the brake calipers;
rear axle relay valve 14: the air pressure output by the brake master cylinder 6 is adjusted and distributed to a left rear ABS electromagnetic valve 15 and a right rear ABS electromagnetic valve 16 (namely distributed to the left and right wheel edges of a rear axle);
left rear ABS solenoid valve 15, right rear ABS solenoid valve 16: adjusting to an optimal adhesion coefficient area by detecting the slip rate of left and right wheels of the rear axle, and exerting the maximum braking efficiency;
left rear booster pump 17, right rear booster pump 18: the air pressure input is amplified and converted into hydraulic output through a second amplification factor (such as 10 times);
left rear brake 19, right rear brake 20: the vehicle is decelerated and stopped by generating braking force by clamping the brake calipers;
the ABS regulator 21: the best braking performance is achieved by adjusting the slip rates of the four wheels.
In the embodiment of the application, the working principle of the pneumatic hydraulic brake system shown in fig. 1 is as follows:
the air compressor 1 is used for starting to work after the vehicle is started and transmitting high-pressure air to the air processing unit 2;
the air processing unit 2 is used for respectively transmitting the high-pressure gas to the front axle gas cylinder 3 and the rear axle gas cylinder 4;
when the brake pedal 5 is pressed down to push the master cylinder 6 (for example, when the brake pedal 5 is pressed down by a driver to push a piston of the master cylinder 6 by a mandril of the brake pedal 5), the master cylinder 6 is used for transmitting the air pressure of the front axle air cylinder 3 to the front axle relay valve 7 and transmitting the air pressure of the rear axle air cylinder 4 to the rear axle relay valve 14;
the front axle relay valve 7 is used for distributing air pressure to a left front ABS solenoid valve 8 and a right front ABS solenoid valve 9; the left front ABS electromagnetic valve 8 is used for transmitting air pressure to a left front booster pump 10, and the right front ABS electromagnetic valve 9 is used for transmitting air pressure to a right front booster pump 11; the left front booster pump 10 is used for amplifying air pressure input according to a first amplification factor, converting the air pressure input into hydraulic pressure output and transmitting the hydraulic pressure output to the left front brake 12, so that the left front brake 12 clamps a brake caliper to generate braking force to realize vehicle deceleration and stop; the right front booster pump 11 is used for amplifying and converting air pressure input into hydraulic pressure output according to the first amplification factor and transmitting the hydraulic pressure output to the right front brake 13, so that the right front brake 13 clamps a brake caliper to generate braking force to realize deceleration and stop of the vehicle;
the rear axle relay valve 14 is used for distributing air pressure to a left rear ABS solenoid valve 15 and a right rear ABS solenoid valve 16; the left rear ABS solenoid valve 15 is used for transmitting air pressure to a left rear booster pump 17, and the right rear ABS solenoid valve 16 is used for transmitting air pressure to a right rear booster pump 18; the left rear booster pump 17 is used for amplifying air pressure input according to a second amplification factor, converting the air pressure input into hydraulic pressure output and transmitting the hydraulic pressure output to the left rear brake 19, so that the left rear brake 19 enables the brake calipers to clamp to generate braking force to realize vehicle deceleration and stop; the right rear booster pump 18 is used for amplifying and converting air pressure input into hydraulic pressure output according to the second amplification factor and transmitting the hydraulic pressure output to the right rear brake 20, so that the right rear brake 20 clamps a brake caliper to generate braking force to realize vehicle deceleration and stop; the first magnification is greater than the second magnification;
the ABS regulator 21 is configured to regulate the wheel slip rates of the front and rear sides through the left front ABS solenoid valve 8, the right front ABS solenoid valve 9, the left rear ABS solenoid valve 15, and the right rear ABS solenoid valve 16 to achieve the optimal braking performance.
In an embodiment of the present invention, the first magnification is 20 times, and the second magnification is 10 times. It is understood that, in practical applications, the first amplification factor may be selected from other values as needed, and is not limited to 20; the second magnification factor can also be selected from other values according to needs, and is not limited to 10.
The embodiment of the application further discloses a pneumatic jacking hydraulic braking method, which comprises the following steps:
1. the air compressor starts to work after the vehicle is started and transmits high-pressure gas to the air processing unit;
2. the air processing unit respectively transmits the high-pressure gas to a front axle gas cylinder and a rear axle gas cylinder;
3. when a brake pedal is stepped to push a brake master cylinder, the brake master cylinder transmits the air pressure of a front axle air cylinder to a front axle relay valve and transmits the air pressure of a rear axle air cylinder to a rear axle relay valve;
4. the front axle relay valve distributes air pressure to the left front ABS electromagnetic valve and the right front ABS electromagnetic valve; the left front ABS electromagnetic valve transmits air pressure to the left front booster pump, and the right front ABS electromagnetic valve transmits air pressure to the right front booster pump; the left front booster pump amplifies the air pressure input according to a first amplification factor (such as 20 times) to convert the air pressure input into hydraulic output and transmits the hydraulic output to the left front brake so as to enable the left front brake to generate braking force; the right front booster pump amplifies the air pressure input according to the first amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the right front brake so as to enable the right front brake to generate braking force;
5. the rear axle relay valve distributes air pressure to the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve; the left rear ABS electromagnetic valve transmits air pressure to a left rear booster pump, and the right rear ABS electromagnetic valve transmits air pressure to a right rear booster pump; the left rear booster pump amplifies the air pressure input according to a second amplification factor (such as 10 times) to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the left rear brake so as to enable the left rear brake to generate braking force; the right rear booster pump amplifies the air pressure input according to the second amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the right rear brake so as to enable the right rear brake to generate braking force; the second magnification is greater than the first magnification;
6. the ABS regulator regulates the slip rate of the front and rear wheels through the left front ABS electromagnetic valve, the right front ABS electromagnetic valve, the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve so as to realize the optimal braking performance.
The embodiment of the application further discloses a vehicle, and the vehicle comprises the gas cap liquid braking system disclosed by the embodiment of the application.
In the present embodiment, the vehicle includes large-sized vehicles of N3 and M3 and special vehicles.
The embodiment of the application breaks through the design limitation of conventional pure air pressure or pure hydraulic pressure products, combines air pressure and hydraulic pressure together, and amplifies and converts small air pressure input into large hydraulic pressure output, so that sufficient braking force is obtained, and the brake device is suitable for the safety braking of large vehicles of N3 type and M3 type. The braking safety device is simple in structure, light in weight, safe, reliable, fast in response speed and wide in applicability, and can effectively improve braking safety performance of the large-sized vehicle, shorten braking distance and improve driving safety of the large-sized vehicle.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. A pneumatic hydraulic brake system, comprising:
the air compressor is used for starting to work after the vehicle is started and transmitting high-pressure gas to the air processing unit;
the air processing unit is used for respectively conveying the high-pressure gas to the front axle gas storage cylinder and the rear axle gas storage cylinder;
when a brake pedal is stepped to push a brake master cylinder, the brake master cylinder is used for transmitting the air pressure of a front axle air cylinder to a front axle relay valve and transmitting the air pressure of a rear axle air cylinder to a rear axle relay valve;
the front axle relay valve is used for distributing air pressure to the left front ABS electromagnetic valve and the right front ABS electromagnetic valve; the left front ABS electromagnetic valve is used for transmitting air pressure to the left front booster pump, and the right front ABS electromagnetic valve is used for transmitting air pressure to the right front booster pump; the left front booster pump is used for amplifying and converting air pressure input into hydraulic output according to a first amplification factor and transmitting the hydraulic output to the left front brake so as to enable the left front brake to generate braking force; the right front booster pump is used for amplifying and converting air pressure input into hydraulic output according to the first amplification factor and transmitting the hydraulic output to the right front brake so as to enable the right front brake to generate braking force;
the rear axle relay valve is used for distributing air pressure to the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve; the left rear ABS electromagnetic valve is used for transmitting air pressure to a left rear booster pump, and the right rear ABS electromagnetic valve is used for transmitting air pressure to a right rear booster pump; the left rear booster pump is used for amplifying and converting air pressure input into hydraulic output according to a second amplification factor and transmitting the hydraulic output to the left rear brake so as to enable the left rear brake to generate braking force; the right rear booster pump is used for amplifying and converting air pressure input into hydraulic output according to the second amplification factor and transmitting the hydraulic output to the right rear brake so as to enable the right rear brake to generate braking force; the first magnification is greater than the second magnification;
the ABS regulator is used for regulating the slip rates of the front and rear wheels through the left front ABS electromagnetic valve, the right front ABS electromagnetic valve, the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve so as to realize the optimal braking performance.
2. The pneumatic hydraulic brake system according to claim 1, wherein the first amplification factor is 20 times; the second magnification is 10 times.
3. A pneumatic hydraulic brake method, comprising:
the air compressor starts to work after the vehicle is started and transmits high-pressure gas to the air processing unit;
the air processing unit respectively transmits the high-pressure gas to a front axle gas cylinder and a rear axle gas cylinder;
when a brake pedal is stepped to push a brake master cylinder, the brake master cylinder transmits the air pressure of a front axle air cylinder to a front axle relay valve and transmits the air pressure of a rear axle air cylinder to a rear axle relay valve;
the front axle relay valve distributes air pressure to the left front ABS electromagnetic valve and the right front ABS electromagnetic valve; the left front ABS electromagnetic valve transmits air pressure to the left front booster pump, and the right front ABS electromagnetic valve transmits air pressure to the right front booster pump; the left front booster pump amplifies air pressure input according to a first amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the left front brake so as to enable the left front brake to generate braking force; the right front booster pump amplifies the air pressure input according to the first amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the right front brake so as to enable the right front brake to generate braking force;
the rear axle relay valve distributes air pressure to the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve; the left rear ABS electromagnetic valve transmits air pressure to a left rear booster pump, and the right rear ABS electromagnetic valve transmits air pressure to a right rear booster pump; the left rear booster pump amplifies the air pressure input according to a second amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the left rear brake so as to enable the left rear brake to generate braking force; the right rear booster pump amplifies the air pressure input according to the second amplification factor to convert the air pressure input into hydraulic pressure output and transmits the hydraulic pressure output to the right rear brake so as to enable the right rear brake to generate braking force; the first magnification is greater than the second magnification;
the ABS regulator regulates the slip rate of the front and rear wheels through the left front ABS electromagnetic valve, the right front ABS electromagnetic valve, the left rear ABS electromagnetic valve and the right rear ABS electromagnetic valve so as to realize the optimal braking performance.
4. The pneumatic hydraulic brake method according to claim 3, wherein the first amplification factor is 20 times; the second magnification is 10 times.
5. A vehicle comprising a pneumatic hydraulic brake system according to any one of claims 1-2.
6. The vehicle of claim 5, characterized in that the vehicle comprises large vehicles of class N3 and class M3 and specialty vehicles.
CN202110618531.7A 2021-06-03 2021-06-03 Gas-cap-liquid braking system, gas-cap-liquid braking method and vehicle Pending CN113232635A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115027433A (en) * 2022-05-05 2022-09-09 北京汽车集团越野车有限公司 Braking system and vehicle

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Application publication date: 20210810