Hydraulic braking system adopting air cut-off brake and vehicle

Abstract

The utility model relates to a hydraulic braking system and a vehicle adopting an air cut-off brake, and belongs to the technical field of vehicle braking systems, the whole system mainly comprises an air compressor, an air dryer, a multi-loop protection valve, an air storage cylinder and a braking master cylinder assembly which are sequentially connected in series through an air pressure pipeline, and the braking master cylinder assembly comprises oil outlets which are mutually independent. The oil outlet is connected with a hydraulic anti-lock unit through a hydraulic pipeline, the hydraulic anti-lock unit is respectively connected with a front brake and a rear brake, the rear brake is connected with a manual brake valve and a one-way valve in series through an air pressure pipeline, and the one-way valve is connected with a multi-loop protection valve. The problems in the prior art are effectively solved, the parking energy efficiency is greatly improved, meanwhile, the safety coefficient is greatly increased, and the service life of the system is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of vehicle braking system technology, and in particular to a hydraulic braking system and vehicle employing an air-break brake. Background Technology

[0002] Light trucks refer to N2 category vehicles in the N category of vehicle classification, with a maximum design gross vehicle weight of no more than 4.5 tons. After years of development, the light truck industry has evolved from low-end to today's automated production lines, and then to the independent research and development and production of high-end light truck products. After continuous high-speed growth in recent years, the high-end light truck market is now showing a booming trend.

[0003] The braking system of a light truck is one of the most critical systems. Light trucks typically use two types of braking systems: air brakes and hydraulic brakes. As the safety requirements for vehicles increase, the safety requirements for vehicle braking systems are also becoming more stringent.

[0004] The hydraulic braking system of an automobile needs to be easy to operate and flexible in use. The braking response time of a vehicle using pneumatic brakes refers to the time elapsed from the moment the braking system's control device is activated until the pressure in the most unfavorable brake chamber reaches 75% of its steady-state maximum pressure, when the actuation time is 0.2 seconds. Both the "Automotive Braking System Structure, Performance and Test Methods" and the "Motor Vehicle Operation Safety Technical Conditions" stipulate that the braking response time of heavy-duty trucks should not exceed 0.6 seconds.

[0005] In the air-pressure braking system, the parking function is achieved through a spring energy storage structure acting on the rear wheels, which can be summarized as an air-stop braking system. The rear wheel air chamber adopts a dual-chamber structure, including a driving chamber and a parking chamber. The parking chamber is equipped with an energy storage spring, which can provide sufficient parking braking force.

[0006] For hydraulic braking systems, parking typically employs a mechanical cable-operated structure with a lever-pull plate actuator. The actuator has two installation locations: one is a central brake acting on the drive shaft; the other is integrated into the rear wheel drum brake. Both of these solutions have low parking efficiency, becoming a bottleneck in the application of hydraulic braking systems, posing certain safety hazards, and failing to meet current usage requirements.

[0007] For example, CN110371095B discloses a service braking system and a vehicle. The service braking system includes an air reservoir, a brake valve, two electromagnetic relay valves, and a brake chamber. The air reservoir is connected to the air inlet of the brake valve and the air inlets of the two electromagnetic relay valves via air passages to provide an air source. The air outlet of the brake valve is connected to the control ports of the two electromagnetic relay valves via air passages. The air outlets of the two electromagnetic relay valves are connected to the brake chambers on the same side via air passages to supply air to the brake chambers. The service braking system provided by this invention can accelerate response time, reduce the number of parts, significantly lower costs, and greatly improve assembly manufacturability. Although its main method of using electromagnetic relay valves is simple in structure, once damaged or malfunctioning, the entire system will be damaged and unable to function properly, still posing a significant safety hazard. Utility Model Content

[0008] Therefore, it is necessary to address the problems of insufficient parking efficiency and low safety factor of existing hydraulic braking systems by providing a hydraulic braking system and vehicle with an air-cut brake. This would effectively solve the problems in the existing technology, greatly improve parking efficiency, significantly increase the safety factor, and extend the service life.

[0009] A hydraulic braking system employing an air-stop brake includes an air compressor, an air dryer, a multi-circuit protection valve, an air reservoir, and a master cylinder assembly connected in series via air pressure lines. The master cylinder assembly includes independent oil outlets, which are connected to a hydraulic anti-lock braking unit via hydraulic lines. The hydraulic anti-lock braking unit is connected to a front brake and a rear brake. The rear brake is connected to a manual brake valve and a check valve in series via air pressure lines. The check valve is connected to the multi-circuit protection valve.

[0010] As a further improvement to the above technical solution:

[0011] In one embodiment, the brake master cylinder assembly includes a brake pedal and a pneumatic booster.

[0012] In one embodiment, the parking brake system employs a spring-energy-storage structure.

[0013] In one embodiment, the manual brake valve is connected to the spring energy storage chamber in the rear brake.

[0014] In one embodiment, the service brake is activated by actuating the brake pedal, which, with the help of air pressure, causes the master cylinder to output hydraulic pressure, thereby driving the brake to generate service braking force.

[0015] In one embodiment, the parking brake is activated by controlling the air pressure in the spring energy storage chamber through a manual brake valve, thereby releasing or applying the parking brake.

[0016] In one embodiment, an air filter is connected to the front end of the air compressor.

[0017] In one embodiment, the air dryer is equipped with a temperature-sensitive resistor and a heating module.

[0018] In one embodiment, a quick-release valve is connected in series between the manual brake valve and the rear brake.

[0019] A vehicle equipped with a hydraulic braking system that employs an air-stop brake.

[0020] The beneficial effects of this utility model are as follows:

[0021] This utility model has a reasonable overall system structure and is easy to operate. Through the coordinated operation of components such as air compressor, air dryer, multi-circuit protection valve, air tank, brake master cylinder assembly (including brake pedal and air booster), hydraulic anti-lock braking unit, front brake, and rear brake, hydraulic braking can be easily realized. It can effectively solve the problems of insufficient parking efficiency and low safety factor in existing hydraulic braking systems, greatly improve parking efficiency, and also greatly improve the safety factor. It is reliable in operation and has a long service life.

[0022] This invention employs a pneumatic-assisted service brake, providing sufficient braking performance; and a pneumatic-operated parking brake, providing sufficient parking braking performance. The combined effectiveness of the parking and service brakes allows for the use of hydraulic braking systems in heavier trucks, reducing costs and improving efficiency.

[0023] The system described in this utility model has a high overall vehicle safety factor and good stability, improves the reliability of vehicle braking, and prevents phenomena such as vehicle slippage due to parking failure.

[0024] The hydraulic braking system described in this utility model simplifies the overall operation process, makes operation convenient and flexible, and ensures good reliability.

[0025] The system described in this utility model has simple connecting pipes and air lines, simplified assembly process, and low cost. Attached Figure Description

[0026] Figure 1 This is a system structure diagram of the present invention (Example 1).

[0027] Figure 2 This is a system structure diagram of the present invention (Example 2).

[0028] Figure 3 This is a system structure diagram of the present invention (Example 3).

[0029] The components include: 1. Air compressor; 2. Air dryer; 3. Multi-circuit protection valve; 4. Air reservoir; 5. Brake master cylinder assembly; 6. Hydraulic anti-lock braking unit; 7. Front brake; 8. Rear brake; 9. Check valve; 10. Manual brake valve; 11. Vacuum cylinder; 12. Vacuum pump. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] Example 1:

[0037] like Figure 1 As shown, the hydraulic braking system with air-stop brake in this embodiment includes an air compressor 1, an air dryer 2, a multi-circuit protection valve 3, an air reservoir 4, and a brake master cylinder assembly 5 connected in series via air pressure pipelines. The brake master cylinder assembly 5 includes independent oil outlets, which are connected to a hydraulic anti-lock braking unit 6 via hydraulic pipelines. The hydraulic anti-lock braking unit 6 is connected to a front brake 7 and a rear brake 8. The rear brake 8 is connected to a manual brake valve 10 and a one-way valve 9 in series via air pressure pipelines. The one-way valve 9 is connected to the multi-circuit protection valve 3.

[0038] like Figure 1 As shown, the brake master cylinder assembly 5 includes a brake pedal and a pneumatic booster, and has a compact structure and complete functions.

[0039] like Figure 1 As shown, the parking brake system adopts a spring energy storage structure, which has good working stability.

[0040] like Figure 1 As shown, the manual brake valve 10 is connected to the spring energy storage chamber in the rear brake 8 to ensure braking effect.

[0041] like Figure 1 As shown, the service brake works by actuating the brake pedal, which, with the help of air pressure, causes the master cylinder to output hydraulic pressure, driving the brake to generate service braking force, resulting in good braking effect.

[0042] like Figure 1As shown, the parking brake is controlled by the manual brake valve 10, which controls the air pressure in the spring energy storage chamber to drive the spring chamber to release or apply the parking brake. It is flexible and convenient to use, reliable in operation, and has a high safety factor.

[0043] like Figure 1 As shown, an air filter is connected to the front end of the air compressor 1, which can ensure the cleanliness of the compressed air and extend its service life.

[0044] like Figure 1 As shown, the air dryer 2 is equipped with a temperature-sensing resistor and a heating module, making it more convenient to use and operate.

[0045] like Figure 1 As shown, a quick-release valve is connected in series between the manual brake valve 10 and the rear brake 8 to accelerate the venting speed of the high-pressure air in the spring energy storage chamber and improve working efficiency.

[0046] like Figure 1 As shown, the specific operation process of the hydraulic braking system using an air-stop brake described in this utility model is as follows:

[0047] The detailed procedures include the following:

[0048] First, the air compressor 1 converts atmospheric air into high-pressure air. After being filtered for impurities and moisture by the air dryer 2, the air is input into the multi-circuit protection valve 3. Then, the high-pressure air is divided into multiple outputs. One output enters the air reservoir 4 and the air pressure boosting chamber of the brake master cylinder assembly 5. Another output enters the air inlet of the manual brake valve 10 through the one-way valve 9. Then, depending on the situation: when it is necessary to release the parking brake, the manual brake valve 10 is actuated, connecting the air inlet and outlet of the manual brake valve 10. The high-pressure air enters the spring energy storage chamber of the rear brake 8, compressing the spring and thus releasing the parking brake. When it is necessary to apply the service brake, the brake pedal is actuated. With the assistance of the high-pressure air, the brake master cylinder assembly 5 outputs high-pressure oil. The high-pressure oil enters the hydraulic slave pumps of the front brake 7 and rear brake 8 through the hydraulic anti-lock braking unit 6, driving the pistons of the hydraulic slave pumps to push the brake shoes outward until they contact the working surface of the brake drum, thereby generating braking force. The whole operation is convenient, reliable, long-lasting, and has a high safety factor.

[0049] The specific structure and function of the system described in this utility model are explained in detail below:

[0050] like Figure 1As shown, the system described in this utility model includes a service braking system and a parking braking system. The service braking system adopts a pneumatic-assisted hydraulic braking system, which includes an air compressor 1, an air dryer 2, a multi-circuit protection valve 3, an air reservoir 4, a brake master cylinder assembly 5 (including a brake pedal and a pneumatic booster), a hydraulic anti-lock braking unit 6, a front brake 7, and a rear brake 8, which are connected in sequence through pipelines or air lines.

[0051] The parking brake system described in this embodiment adopts a spring energy storage type, including a one-way valve 9 and a manual brake valve 10 connected in sequence. It has a simple structure, is easy to install, and has low cost.

[0052] In this embodiment, the one-way valve 9 is connected to the multi-circuit protection valve 3, and the manual brake valve 10 is connected to the spring energy storage chamber in the rear brake 8.

[0053] The service brake described in this embodiment generates service braking force by actuating the brake pedal, which, with the help of air pressure, causes the master cylinder to output hydraulic pressure.

[0054] The parking brake described in this embodiment is activated by controlling the air pressure in the spring energy storage chamber through the manual brake valve 10, thereby releasing / activating the parking brake. The air pressure is provided by the multi-circuit protection valve 3, and the one-way valve 9 is used to prevent air pressure fluctuations in the multi-circuit protection valve 3 from affecting the parking brake status.

[0055] The air compressor 1 described in this embodiment provides compressed air and is connected to the air inlet of the air dryer 2.

[0056] The air dryer 2 described in this embodiment filters impurities and moisture from the high-pressure air, and its outlet is connected to the inlet of the multi-circuit protection valve 3.

[0057] The multi-circuit protection valve 3 described in this embodiment has one air inlet and multiple air outlets, wherein the first air outlet is connected to the air storage tank 4 and the second air outlet is connected to the one-way valve 9.

[0058] In this embodiment, the air reservoir 4 and the air pressure boosting chamber of the brake master cylinder assembly 5 are connected.

[0059] The master cylinder of the brake master cylinder assembly 5 described in this embodiment has two independent oil outlets, which are respectively connected to the two oil inlets of the hydraulic anti-lock braking unit 6.

[0060] The hydraulic anti-lock braking unit 6 described in this embodiment has two independent oil inlets and four independent oil outlets. The hydraulic anti-lock braking unit 6 is connected to the two front brakes 7 and the two rear brakes 8 through oil circuits, and the four oil outlets are respectively connected to the oil inlets of the hydraulic pumps on the brakes.

[0061] In this embodiment, one end of the one-way valve 9 is connected to the second outlet of the multi-circuit protection valve 3, and the other end of the one-way valve 9 is connected to the inlet of the manual brake valve 10. High-pressure air flows from the second outlet of the multi-circuit protection valve 3 to the inlet of the manual brake valve 10.

[0062] In this embodiment, the air outlet of the manual brake valve 10 and the air inlet of the spring energy storage chamber on the rear brake 8 are connected.

[0063] In this embodiment, during actual operation, when a vehicle using this system is running, the air compressor 1 converts atmospheric air into high-pressure air. After being filtered for impurities and moisture by the air dryer 2, the air is input into the multi-circuit protection valve 3. The high-pressure air is then output in multiple paths: the first path enters the air reservoir 4 and the air booster chamber of the brake pedal and air booster assembly with the brake master cylinder 5; the second path enters the air inlet of the manual brake valve 10 via the one-way valve 9.

[0064] In this embodiment, when it is necessary to release the parking brake, the manual brake valve 10 is activated, which connects the air inlet and outlet of the manual brake valve 10. High-pressure air enters the spring energy storage chamber of the rear brake 8, compressing the spring and thus releasing the parking brake.

[0065] In this embodiment, when service braking is required, the brake pedal is actuated. With the assistance of high-pressure air, the master cylinder outputs high-pressure oil through two outlets. The high-pressure oil enters the hydraulic slave pumps of the front brake 7 and rear brake 8 through the hydraulic anti-lock braking unit 6, driving the pistons of the hydraulic slave pumps to push the brake shoes outward until they contact the working surface of the brake drum, thereby generating braking force.

[0066] In this embodiment, when parking brake needs to be applied, the manual brake valve 10 is activated, disconnecting the air inlet and outlet of the manual brake valve 10 and connecting the air outlet and exhaust outlet. The high-pressure air in the spring energy storage chamber of the rear brake 8 flows through the air outlet of the manual brake valve 10 to the exhaust outlet and is discharged into the atmosphere. The spring is released, thereby realizing parking brake.

[0067] In addition, an air filter needs to be connected before the air inlet of the air compressor 1 described in this embodiment. This can be a borrowed air filter connected to the engine intake, or a separate air filter can be used. The air compressor 1 can be a mechanically driven air compressor integrated into the engine, or a separate electric air compressor.

[0068] It should also be noted that the air dryer 2 described in this embodiment can be equipped with a temperature-sensing resistor and a heating module. The temperature-sensing resistor is used to detect the temperature of the air handling unit, and the heating module is connected to a power supply.

[0069] It should also be noted that the air dryer 2 described in this embodiment may have a control port, which connects to the air compressor 1 through the air circuit to enable the air compressor 1 to work intermittently.

[0070] It should also be noted that the air dryer 2 described in this embodiment can be replaced by an electronically controlled air dryer 2.

[0071] It should also be noted that the multi-circuit protection valve 3 described in this embodiment commonly includes dual-circuit protection valves, triple-circuit protection valves, quadruple-circuit protection valves, and six-circuit protection valves.

[0072] It should also be noted that the multi-circuit protection valve 3 described in this embodiment may have a third air outlet to supply auxiliary air, such as air horn, air seat, urea air drive, pneumatic power take-off, clutch air booster, gearbox shift booster, etc.

[0073] It should also be noted that the air dryer 2 and multi-circuit protection valve 3 described in this embodiment can be replaced by an air handling unit. Air handling units are commonly used products in the industry, integrating the power supply for both the air dryer 2 and the multi-circuit protection valve 3. Air handling units include mechanical and electrically controlled types.

[0074] It should also be noted that, in addition to the interface for connecting the air circuit, the air storage cylinder 4 described in this embodiment may also have an interface for a water drain valve, and may also have an interface for connecting an air pressure alarm, an air pressure sensor, and a detection connector.

[0075] It should also be noted that the hydraulic anti-lock braking unit 6 described in the embodiment can realize the anti-lock braking (ABS) function and can be replaced by an electronic stability control unit (ESC).

[0076] It should also be noted that, in order to accelerate the evacuation of high-pressure air from the spring energy storage chamber, a quick-release valve can be connected in series between the manual brake valve 10 and the rear brake 8 in this embodiment.

[0077] It should also be noted that the service brake described in this embodiment can also be a vacuum-assisted type, and a schematic diagram of the structure in this case is attached. Figure 2 Second embodiment.

[0078] like Figure 2 As shown, the specific structure of this second embodiment is as follows:

[0079] The system includes an air compressor 1, an air dryer 2, an air reservoir 4, and a manual brake valve 10, connected in series via pneumatic pipelines. It also includes a vacuum pump 12, which is connected in series via a vacuum pipeline to a one-way valve 9, a vacuum cylinder 11, and a master cylinder assembly 5. The master cylinder assembly 5 includes independent oil outlets, which are connected to a hydraulic anti-lock braking unit 6 via hydraulic pipelines. The hydraulic anti-lock braking unit 6 is connected to a front brake 7 and a rear brake 8, which are connected to the manual brake valve 10 via pneumatic pipelines. The overall structure is simple, the process is simple, manufacturing and connection are convenient, and the cost is low.

[0080] The service brake described in this embodiment can also be an electro-hydraulic braking system, and a schematic diagram of the structure is attached. Figure 3 Third embodiment.

[0081] The Electro-Hydraulic Brake (EHB) described in this embodiment uses an electric motor as a power source, and transmits the motor power to the brake master cylinder through a transmission mechanism to establish hydraulic pressure.

[0082] like Figure 3 As shown, the specific structure of this embodiment three is as follows:

[0083] The system includes an air compressor 1, an air dryer 2, an air reservoir 4, and a manual brake valve 10, connected in series via pneumatic pipelines. It also includes a master brake assembly 5, which contains independent oil outlets connected to a hydraulic anti-lock braking unit 6 via hydraulic pipelines. The hydraulic anti-lock braking unit 6 is connected to a front brake 7 and a rear brake 8, with the rear brake 8 connected to the manual brake valve 10 via pneumatic pipelines. The overall structure is simple, the process is straightforward, manufacturing and connection are convenient, and the cost is low.

[0084] This utility model has a compact structure and good working reliability. It effectively solves the problems of insufficient parking efficiency and low safety factor of existing hydraulic braking systems, greatly improving parking efficiency and safety factor.

[0085] The service brake described in this invention is a pneumatic-assisted type, which can provide sufficient service braking performance. The parking brake is an air-operated type, which can provide sufficient parking braking performance. The combined performance of the parking brake and the service brake enables the use of hydraulic braking systems in trucks with larger gross weights, reducing costs and improving efficiency.

[0086] The system described in this utility model has a small number of parts, a simple assembly process, and is convenient to assemble and use, resulting in a significant reduction in cost. While ensuring a safety factor, it greatly reduces costs and assembly processability.

[0087] The system described in this utility model has a high overall vehicle safety factor and good stability, improves the reliability of vehicle braking, and prevents phenomena such as vehicle slippage due to parking failure.

[0088] The hydraulic braking system described in this utility model simplifies the overall operation process, makes operation convenient and flexible, and ensures good reliability.

[0089] The system described in this utility model has simple connecting pipes and air lines, simplified assembly process, and low cost.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hydraulic brake system employing a vacuum cut-off brake, characterized by, The air compressor, the air dryer, the multi-circuit protection valve, the air reservoir and the brake master cylinder assembly are connected in series through the air pressure pipeline.

2. The hydraulic brake system employing a vacuum cut-off according to claim 1, wherein, The brake master cylinder assembly comprises a brake pedal and an air pressure booster.

3. The hydraulic brake system employing a vacuum cut-off according to claim 1, wherein, The parking brake system adopts a spring energy storage type structure.

4. The hydraulic brake system employing a vacuum cut-off according to claim 1, wherein, The manual brake valve is communicated with the spring energy storage air chamber in the rear brake.

5. The hydraulic brake system employing a vented brake according to claim 1, wherein, The service brake is driven by the brake pedal, and the brake master cylinder outputs hydraulic pressure under the action of the air pressure booster to drive the brake to generate service braking force.

6. The hydraulic brake system employing a vented brake according to claim 1, wherein, The parking brake is driven by controlling the air pressure in the spring energy storage air chamber through the manual brake valve to drive the spring air chamber to release or implement the parking brake.

7. The hydraulic brake system employing a vented brake according to claim 1, wherein The front end of the air compressor is connected with an air filter.

8. The hydraulic brake system employing a vented brake according to claim 1, wherein, The air dryer is provided with a temperature sensing resistor and a heating module.

9. The hydraulic brake system employing a vented brake according to claim 1, wherein, A quick release valve is connected in series between the manual brake valve and the rear brake.

10. A vehicle characterized by comprising: The hydraulic brake system with the air cut brake is configured as claimed in any one of claims 1-9.

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