Hydraulic control pneumatic valve and automobile clutch brake control system

Abstract

The application discloses a kind of liquid control gas valve and automobile clutch brake control system, the liquid control gas valve includes: liquid control gas valve shell is connected with the dynamic pump oil outlet on engine;Liquid control gas valve shell includes small cylindrical shell and large cylindrical shell, valve core is arranged in liquid control gas valve shell, valve core includes hollow pipe corresponding with small cylindrical shell and solid cylinder corresponding with large cylindrical shell, the solid cylinder outside of valve core is connected with the clutch yoke assembly that can extend to the outside of shell, switch valve is arranged in the hollow pipe of valve core, switch valve right end is provided with switch valve spring, brake spring is arranged in the right end portion in liquid control gas valve shell.The liquid control gas valve and automobile clutch brake control system provided by the application make the whole vehicle brake, clutch have the help when being controlled by a pedal, reduce the size of pedal force, improve comfort;Cancel the original clutch sub-pump, simplify the whole clutch, brake system, so that the whole vehicle brake, clutch is controlled by a pedal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile braking system, and particularly relates to a hydraulic control air valve and an automobile clutch braking control system. BACKGROUND

[0002] In the current braking system, clutch and braking are controlled by independent two pedals. In the braking process, the compressed air of front and rear brake cylinders needs to be connected to the brake master pump in the cab, and then is connected to the front and rear ABS electromagnetic valves from the air outlet of the brake master pump. The on and off of the air inlet and outlet of the brake master pump is controlled by the brake pedal. The whole pipeline is long, which delays the braking response time.

[0003] Therefore, a hydraulic control air valve and an automobile clutch braking control system are urgently needed. SUMMARY

[0004] The present application aims to provide a hydraulic control air valve and an automobile clutch braking control system to solve the problems in the prior art. The whole vehicle braking and clutch can be controlled by one pedal. The pedal can provide assistance when the whole vehicle braking and clutch are controlled by one pedal. The structure of the whole system is simplified, and the clutch pump is cancelled.

[0005] The present application provides a hydraulic control air valve, which comprises a hydraulic control air valve shell connected with the oil outlet of a dynamic pump on an engine, so that the high-pressure oil of the dynamic pump can enter the hydraulic control air valve for assistance. The hydraulic control air valve shell comprises small and large cylindrical shells of different diameters arranged in sequence along the left-right direction. A valve core slidable along an axis is arranged in the hydraulic control air valve shell. The valve core comprises a hollow pipe and a solid cylinder arranged in sequence. The hollow pipe corresponds to the small cylindrical shell and can slide to the area where the large cylindrical shell is located. The solid cylinder corresponds to the large cylindrical shell. The solid cylinder of the valve core is connected with a clutch yoke assembly extendable to the outside of the hydraulic control air valve shell. A switch valve slidable along an axis is arranged in the hollow pipe of the valve core. A switch valve spring is arranged at the right end of the switch valve. A brake spring is arranged in the hydraulic control air valve shell and located at the right end of the hydraulic control air valve shell.

[0006] As described above, in a preferred embodiment, the valve housing 1 is provided with a non-assisted hydraulic oil inlet, a housing-assisted hydraulic oil inlet, a housing-assisted hydraulic oil outlet, a front brake high-pressure gas inlet, a rear brake high-pressure gas inlet, a front brake high-pressure gas outlet, and a rear brake high-pressure gas outlet. The non-assisted hydraulic oil inlet is located on the left end face of the small cylindrical shell of the valve housing. The housing-assisted hydraulic oil inlet is located at the center of the top of the small cylindrical shell of the valve housing. The housing-assisted hydraulic oil outlet is located on the left end face of the small cylindrical shell of the valve housing. The small cylindrical housing is located at the bottom center position; the front brake high-pressure gas inlet and the rear brake high-pressure gas inlet are symmetrically arranged at the top of the large cylindrical housing of the hydraulic control valve housing, and the line connecting the front brake high-pressure gas inlet and the rear brake high-pressure gas inlet is perpendicular to the axial direction of the hydraulic control valve housing; the front brake high-pressure gas outlet and the rear brake high-pressure gas outlet are symmetrically arranged at the bottom of the large cylindrical housing of the hydraulic control valve housing, and the line connecting the front brake high-pressure gas outlet and the rear brake high-pressure gas outlet is perpendicular to the axial direction of the hydraulic control valve housing.

[0007] In the hydraulically controlled air valve described above, preferably, the non-assisted hydraulic oil inlet is connected to the brake master cylinder in the driver's cab; the housing-assisted hydraulic oil inlet is connected to the oil outlet of the power pump on the engine; the housing-assisted hydraulic oil outlet is connected to the oil inlet of the power pump reservoir; the front brake high-pressure gas inlet is connected to the air outlet of the front brake reservoir; the front brake high-pressure gas outlet is connected to the air inlet of the front brake ABS solenoid valve; the rear brake high-pressure gas inlet is connected to the air outlet of the rear brake reservoir; and the rear brake high-pressure gas outlet is connected to the air inlet of the rear brake ABS solenoid valve.

[0008] As described above, preferably, a mounting plate is provided on the right side of the large cylindrical shell of the hydraulic control valve housing 1. The mounting plate has a plurality of hydraulic control valve mounting holes for mounting the hydraulic control valve. The mounting plate is a rounded square in shape, and the number of hydraulic control valve mounting holes is four, which are symmetrically arranged at the four corner edges of the mounting plate.

[0009] In the hydraulically controlled pneumatic valve described above, preferably, the clutch fork assembly includes a clutch fork and a clutch fork push rod, wherein one end of the clutch fork push rod is connected to the right end of the valve core, the axial direction of the clutch fork push rod is consistent with the axial direction of the hydraulically controlled pneumatic valve housing, and the other end of the clutch fork push rod is connected to a clutch fork.

[0010] In the hydraulically controlled pneumatic valve described above, preferably, the hollow circular tube of the valve core extends into the solid cylinder; a waist-shaped hole is provided at the lower position of the hollow circular tube as the valve core oil outlet; a waist-shaped hole is provided at the upper position of the hollow circular tube as the valve core oil inlet; holes are provided at the top and bottom of the hollow circular tube near the solid cylinder as valve core oil inlet and outlet ports; a front brake high-pressure gas channel and a rear brake high-pressure gas channel are symmetrically arranged at the top of the solid cylinder, wherein the size of the rear brake high-pressure gas channel is larger than the size of the front brake high-pressure gas channel, and the line connecting the front brake high-pressure gas channel and the rear brake high-pressure gas channel is perpendicular to the axial direction of the solid cylinder; a clutch fork push rod mounting seat for mounting the clutch fork assembly is provided on the right end face of the solid cylinder; a spring mounting seat for mounting the switch valve spring is provided at the connection between the hollow circular tube and the solid cylinder.

[0011] As described above, in the hydraulic control valve, preferably, the cross-section of the switching valve 4 is approximately T-shaped. The switching valve includes a first switching valve port, a second switching valve port, and a third switching valve port arranged in a vertical direction. A horizontally arranged connecting oil passage is provided between the first switching valve port, the second switching valve port, and the third switching valve port. The first switching valve port is located at the upper left of the connecting oil passage and extends upward to the top of the switching valve. The second switching valve port is located at the right side of the connecting oil passage and extends upward to the top of the switching valve and downward to the bottom of the switching valve, respectively. The third switching valve port is located below the middle of the connecting oil passage and extends downward to the bottom of the switching valve.

[0012] In the hydraulically controlled pneumatic valve described above, preferably, a power-assisted oil chamber corresponding to the position of the valve core oil inlet / outlet is provided on the outer side of the right circumference of the hollow circular tube.

[0013] In the hydraulic control valve described above, preferably, in the initial state, the power assist oil chamber is connected to the rotating oil reservoir via the valve core inlet / outlet of the valve core, the internal pipeline of the switching valve consisting of the third switching valve port, the connecting oil circuit and the second switching valve port, the valve core outlet of the valve core, and the housing power assist hydraulic oil outlet on the hydraulic control valve housing. At this time, the hydraulic oil pressure in the power assist oil chamber of the hydraulic control valve assembly is 0.

[0014] The operating states of the hydraulically controlled pneumatic valve include a first operating state, a second operating state, a third operating state, a fourth operating state, and a fifth operating state, wherein:

[0015] In the first working state, when the driver has just pressed the brake pedal, the master cylinder pushes the hydraulic fluid into the non-power-assisted hydraulic oil inlet of the hydraulic control valve housing. At this time, the switching valve moves and compresses the switching valve spring. The internal pipeline of the switching valve, consisting of the third switching valve port, the connecting oil circuit, and the second switching valve port, is disconnected from the valve core outlet of the valve core. Furthermore, the third switching valve port of the switching valve is connected to the valve core inlet of the valve core. The high-pressure oil from the rotating pump flows into the power-assisted oil chamber through the housing power-assisted hydraulic oil inlet on the hydraulic control valve housing, the valve core inlet of the valve core, and the internal pipeline of the switching valve, consisting of the first switching valve port, the connecting oil circuit, and the second switching valve port. At this time, the power-assisted oil chamber contains high-pressure hydraulic oil.

[0016] In the second operating state, when the driver continuously depresses the brake pedal, the high-pressure oil from the throttle pump continuously flows into the power assist hydraulic chamber through the power assist hydraulic oil inlet on the hydraulic control valve housing, the valve core inlet on the valve core, and the internal pipeline of the switching valve consisting of the first switching valve port, the connecting oil circuit, and the second switching valve port. This propels the valve core and the clutch fork assembly until the rear brake high-pressure gas passage in the valve core just begins to contact the rear brake high-pressure gas inlet on the hydraulic control valve housing. At this point, the rear brake high-pressure gas passage and the hydraulic... The rear brake high-pressure gas inlet on the air control valve housing is not open, and the initial length of the brake spring is set so that the valve core just begins to contact the brake spring at this time. The magnitude of the high-pressure oil assist F1 is set to be equal to or approximately equal to the magnitude of the thrust F2 required by the clutch rocker arm. When the valve core just begins to contact the brake spring, the driver will feel the brake pedal become harder. The pedal is softer when the clutch is engaged, and it becomes harder when the braking system begins to engage. Based on the two pedal forces of the brake pedal for both clutch and braking, the driver can lightly press the pedal to control only the clutch, or press the brake pedal deeply to achieve both clutch and braking.

[0017] In the third operating state, based on the second operating state of the hydraulic control valve, if the driver needs to brake, they should continue to press the brake pedal after feeling it harden. High-pressure oil from the rotary pump will continuously flow into the power assist chamber through the hydraulic control valve housing's booster hydraulic oil inlet, the valve core's valve core inlet, and the internal pipeline of the switching valve consisting of the first switching valve port, the connecting oil circuit, and the second switching valve port to provide assistance. The driver needs to apply additional pedal force to overcome the resistance of the brake spring, ultimately achieving the desired rear braking force. The high-pressure gas passage, the rear brake high-pressure gas inlet and the rear brake high-pressure gas outlet on the hydraulic control valve housing are connected. The high-pressure gas from the rear brake reservoir enters the rear brake ABS solenoid valve through the hydraulic control valve to power the rear brake chamber. Similarly, the front brake high-pressure gas passage, the front brake high-pressure gas inlet and the front brake high-pressure gas outlet on the hydraulic control valve housing are connected. The high-pressure gas from the front brake reservoir enters the front brake ABS solenoid valve through the hydraulic control valve assembly to power the front brake chamber. Finally, the front and rear brakes begin to operate.

[0018] In the fourth operating state, when the hydraulic control valve is in any of the first, second, and third operating states, if the driver releases the brake pedal, the switching valve returns to its original position under the action of the switching valve spring. At this time, the relative position of the switching valve and the valve core returns to the initial state. The power assist oil chamber is connected to the power oil reservoir via the valve core inlet / outlet of the valve core, the internal pipeline of the switching valve consisting of the connecting oil circuit, the second switching valve port, and the third switching valve port, the valve core outlet of the valve core, and the housing power assist hydraulic oil outlet on the hydraulic control valve housing. At this time, the hydraulic oil pressure in the power assist oil chamber is 0. Under the action of the clutch diaphragm spring, the clutch rocker arm drives the clutch shift fork assembly and the valve core to move in opposite directions until the hydraulic control valve returns to the initial state.

[0019] In the fifth operating state, the hydraulic control valve assist is disabled. At this time, when the driver presses the brake pedal, the hydraulic oil of the brake master cylinder pushes the switch valve to move. The switch valve drives the valve core and the clutch shift fork assembly to move, thereby realizing the clutch and braking functions. The working process when the hydraulic control valve assembly returns to its original position is the same as the working process of the hydraulic control valve in the fourth operating state.

[0020] The present invention also provides an automotive clutch and brake control system, comprising:

[0021] The main control circuit includes a master cylinder and a pedal, wherein the pedal is electrically connected to the master cylinder and is used to control the fluid flow rate of the master cylinder;

[0022] Braking auxiliary circuit, including clutch rocker arm, rear brake air reservoir, rear brake chamber, front brake air reservoir, and front brake chamber; and,

[0023] A hydraulically controlled air valve is located between the main control circuit and the auxiliary braking circuit to connect the main control circuit and the auxiliary braking circuit. The hydraulically controlled air valve is the aforementioned hydraulically controlled air valve.

[0024] The present invention relates to a hydraulically controlled air valve and an automotive clutch and brake control system. The hydraulically controlled air valve housing is connected to the oil outlet of the engine's rotary pump. High-pressure oil is drawn from the rotary pump to the hydraulically controlled air valve for assistance, enabling the entire vehicle's braking and clutch to be controlled by a single pedal, reducing pedal force and improving comfort. The function of the clutch slave cylinder is integrated into the hydraulically controlled air valve, eliminating the original clutch slave cylinder and simplifying the structure of the entire clutch and braking system. This allows the entire vehicle's braking and clutch to be controlled by a single pedal, solving the problems of traditional technologies where the clutch and brake are controlled by two separate pedals, resulting in long control response times and low device integration. The entire braking and clutch system has a simple structure, low cost, fast response, and good braking effect, and has a promising market prospect. Attached Figure Description

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described below with reference to the accompanying drawings, wherein:

[0026] Figure 1 This is a cross-sectional view of an embodiment of the hydraulically controlled pneumatic valve provided by the present invention;

[0027] Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the hydraulically controlled pneumatic valve provided by the present invention;

[0028] Figure 3 A schematic diagram illustrating the working principle of the clutch and brake control system provided by the present invention;

[0029] Figure 4 This is a schematic diagram of the valve core structure of an embodiment of the hydraulically controlled pneumatic valve provided by the present invention;

[0030] Figure 5 A cross-sectional view of the valve core of an embodiment of the hydraulically controlled pneumatic valve provided by the present invention;

[0031] Figure 6 A cross-sectional view of the switching valve in an embodiment of the hydraulically controlled pneumatic valve provided by the present invention;

[0032] Figure 7 A cross-sectional view of an embodiment of the hydraulically controlled pneumatic valve provided by the present invention in its initial state;

[0033] Figure 8 A cross-sectional view of the hydraulically controlled pneumatic valve embodiment provided by the present invention in its first working state;

[0034] Figure 9 A cross-sectional view of an embodiment of the hydraulically controlled pneumatic valve provided by the present invention in a second working state;

[0035] Figure 10 A cross-sectional view of the hydraulically controlled pneumatic valve embodiment provided by the present invention in the third working state;

[0036] Figure 11 A cross-sectional view of the hydraulically controlled pneumatic valve embodiment provided by the present invention in the fourth working state;

[0037] Figure 12 A cross-sectional view of the hydraulically controlled pneumatic valve embodiment provided by the present invention in its fifth working state.

[0038] Explanation of reference numerals in the attached drawings: 1-Hydraulic control valve housing, 2-Clutch fork assembly, 3-Valve core, 4-Switch valve, 5-Switch valve spring, 6-Brake spring, 7-Power assist oil chamber, 11-Non-power assist hydraulic oil inlet, 12-Housing power assist hydraulic oil inlet, 13-Housing power assist hydraulic oil outlet, 14-Front brake high-pressure gas inlet, 15-Rear brake high-pressure gas inlet, 16-Front brake high-pressure gas outlet, 17-Rear brake high-pressure gas outlet, 18-Hydraulic control valve mounting hole, 21-Clutch fork, 22-Clutch fork push rod, 31-Valve core oil outlet, 32-Valve core oil inlet, 33-Valve core inlet and outlet, 34-Front brake high-pressure gas passage, 35-Rear brake high-pressure gas passage, 36-Clutch fork push rod mounting seat, 37-Spring mounting seat, 41-First switch valve oil port, 42-Connecting oil circuit, 43-Second switch valve oil port, 44-Third switch valve oil port. Detailed Implementation

[0039] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0040] The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Terms such as “including” or “contains” mean that the element preceding the term encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as “above” and “below” are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0041] In this disclosure, when a specific component is described as being located between a first component and a second component, an intermediary component may or may not be present between the specific component and the first or second component. When a specific component is described as connecting to other components, the specific component may be directly connected to the other components without having an intermediary component, or it may not be directly connected to the other components but may have an intermediary component.

[0042] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0043] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0044] like Figure 1 As shown, the hydraulic control valve provided in this embodiment includes: a hydraulic control valve housing 1, which is connected to the oil outlet of the power pump on the engine, so that the high-pressure oil of the power pump can enter the hydraulic control valve for power assistance; the hydraulic control valve housing 1 includes small cylindrical housings and large cylindrical housings of different diameters arranged sequentially in the left-right direction, and a valve core 3 that can slide along the axis is provided inside the hydraulic control valve housing 1, such as... Figure 3 As shown, the valve core 3 includes a hollow circular tube and a solid cylinder arranged sequentially. The hollow circular tube corresponds to the small cylindrical shell and can slide to the area where the large cylindrical shell is located. The solid cylinder corresponds to the large cylindrical shell. A clutch fork assembly 2 that can extend to the outside of the hydraulic control valve housing 1 is connected to the outside of the solid cylinder of the valve core 3. A switching valve 4 that can slide along the axis is provided inside the hollow circular tube of the valve core 3. A switching valve spring 5 is provided at the right end of the switching valve 4. A brake spring 6 located at the right end of the hydraulic control valve housing 1 is provided inside the hydraulic control valve housing 1.

[0045] Furthermore, such as Figure 2As shown, the hydraulic valve housing 1 is provided with a non-assisted hydraulic oil inlet 11, a housing-assisted hydraulic oil inlet 12, a housing-assisted hydraulic oil outlet 13, a front brake high-pressure gas inlet 14, a rear brake high-pressure gas inlet 15, a front brake high-pressure gas outlet 16, and a rear brake high-pressure gas outlet 17. The non-assisted hydraulic oil inlet 11 is located on the left end face of the small cylindrical shell of the hydraulic valve housing 1. The housing-assisted hydraulic oil inlet 12 is located at the top center of the small cylindrical shell of the hydraulic valve housing 1. The housing-assisted hydraulic oil outlet 13 is located on the top center of the small cylindrical shell of the hydraulic valve housing 1. The front brake high-pressure gas inlet 14 and the rear brake high-pressure gas inlet 15 are symmetrically arranged at the top of the large cylindrical shell of the hydraulic valve housing 1, and the line connecting the front brake high-pressure gas inlet 14 and the rear brake high-pressure gas inlet 15 is perpendicular to the axial direction of the hydraulic valve housing 1; the front brake high-pressure gas outlet 16 and the rear brake high-pressure gas outlet 17 are symmetrically arranged at the bottom of the large cylindrical shell of the hydraulic valve housing 1, and the line connecting the front brake high-pressure gas outlet 16 and the rear brake high-pressure gas outlet 17 is perpendicular to the axial direction of the hydraulic valve housing 1.

[0046] Specifically, such as Figure 3 As shown, the non-assisted hydraulic oil inlet 11 is connected to the brake master cylinder in the driver's cab; the housing-assisted hydraulic oil inlet 12 is connected to the oil outlet of the power pump on the engine; the housing-assisted hydraulic oil outlet 13 is connected to the oil inlet of the power pump reservoir; the front brake high-pressure gas inlet 14 is connected to the air outlet of the front brake air reservoir; the front brake high-pressure gas outlet 16 is connected to the air inlet of the front brake ABS solenoid valve. When the valve core 3 in the hydraulic control valve moves to the designated position, the front brake high-pressure gas inlet 14 and the front brake high-pressure gas outlet 16 are connected, and the front brake air reservoir... The high-pressure gas inside the cylinder enters the left and right air chambers of the front brake via the front brake ABS solenoid valve, enabling the front brake to operate. The high-pressure gas inlet 15 of the rear brake is connected to the outlet of the rear brake reservoir and is always filled with high-pressure gas. The high-pressure gas outlet 17 of the rear brake is connected to the inlet of the rear brake ABS solenoid valve. When the valve core 3 in the hydraulic control valve moves to the designated position, the high-pressure gas inlet 15 and the high-pressure gas outlet 17 of the rear brake are connected, and the high-pressure gas in the rear brake reservoir enters the left and right air chambers of the rear brake via the rear brake ABS solenoid valve, enabling the rear brake to operate.

[0047] Furthermore, such as Figure 2As shown, a mounting plate is provided on the right side of the large cylindrical shell of the hydraulic control valve housing 1. The mounting plate has a plurality of hydraulic control valve mounting holes 18 for mounting the hydraulic control valve. The mounting plate is a rounded square, and there are four hydraulic control valve mounting holes 18, which are symmetrically arranged at the four corner edges of the mounting plate.

[0048] Furthermore, such as Figure 2 As shown, the clutch fork assembly 2 includes a clutch fork 21 and a clutch fork push rod 22. One end of the clutch fork push rod 22 is connected to the right end of the valve core 3. The axial direction of the clutch fork push rod 22 is consistent with the axial direction of the hydraulic control valve housing 1. The other end of the clutch fork push rod 22 is connected to the clutch fork 21.

[0049] Furthermore, such as Figure 4 and Figure 5 As shown, the hollow tube of the valve core 3 extends into the solid cylinder. A waist-shaped hole is provided at the lower part of the hollow tube as the valve core oil outlet 31; a waist-shaped hole is provided at the upper part of the hollow tube as the valve core oil inlet 32; holes are provided at the top and bottom of the hollow tube near the solid cylinder as valve core oil inlet and outlet ports 33; a front brake high-pressure gas channel 34 and a rear brake high-pressure gas channel 35 are symmetrically arranged at the top of the solid cylinder, wherein the size of the rear brake high-pressure gas channel 35 is larger than the size of the front brake high-pressure gas channel 34, so that when the valve core 3 moves... The rear brake high-pressure gas passage 35 first contacts the rear brake high-pressure gas inlet 15 and the rear brake high-pressure gas outlet 17, and the rear brake will work first (because the hydraulic control valve is closer to the front wheel, in order to ensure that the front and rear brakes work simultaneously, the rear brake high-pressure gas needs to be connected first). Furthermore, the line connecting the front brake high-pressure gas passage 34 and the rear brake high-pressure gas passage 35 is perpendicular to the axial direction of the solid cylinder. The right end face of the solid cylinder is provided with a clutch fork push rod mounting seat 36 for mounting the clutch fork assembly 2. The connection between the hollow tube and the solid cylinder is provided with a spring mounting seat 37 for mounting the switch valve spring 5.

[0050] Furthermore, such as Figure 6As shown, the cross-section of the switching valve 4 is approximately T-shaped. The switching valve 4 includes a first switching valve port 41, a second switching valve port 43, and a third switching valve port 44 arranged in a vertical direction. A horizontally arranged connecting oil passage 42 is provided between the first switching valve port 41, the second switching valve port 43, and the third switching valve port 44. The first switching valve port 41 is located at the upper left of the connecting oil passage 42 and extends upward to the top of the switching valve 4. The second switching valve port 43 is located at the right side of the connecting oil passage 42 and extends upward to the top of the switching valve 4 and downward to the bottom of the switching valve 4, respectively. The third switching valve port 44 is located below the middle of the connecting oil passage 42 and extends downward to the bottom of the switching valve 4.

[0051] Furthermore, such as Figure 7 As shown, the hollow circular tube has an auxiliary oil chamber 7 on the outer side of the right circumference, which corresponds to the position of the valve core oil inlet / outlet 33.

[0052] like Figure 7 As shown, in the initial state, the hydraulic control valve's power-assisted oil chamber 7 is connected to the rotating oil reservoir via the valve core inlet / outlet 33 of the valve core 3, the internal pipeline of the switching valve 4 consisting of the third switching valve port 44, the connecting oil circuit 42 and the second switching valve port 43, the valve core outlet 31 of the valve core 3, and the housing power-assisted hydraulic oil outlet 13 on the hydraulic control valve housing 1. At this time, the hydraulic oil pressure in the power-assisted oil chamber 7 of the hydraulic control valve assembly is 0.

[0053] The operating states of the hydraulically controlled pneumatic valve include a first operating state, a second operating state, a third operating state, a fourth operating state, and a fifth operating state, wherein:

[0054] like Figure 8As shown, in the first working state, when the driver has just pressed the brake pedal, the brake master cylinder pushes the oil into the non-powered hydraulic oil inlet 11 of the hydraulic control valve housing 1. Because the clutch shift fork requires a large thrust, while the stiffness of the switch valve spring 5 is small, the switch valve 4 moves and compresses the switch valve spring 5. The internal pipeline of the switch valve 4, consisting of the third switch valve port 44, the connecting oil passage 42, and the second switch valve port 43, is disconnected from the valve core outlet 31 of the valve core 3. Furthermore, the third switch valve port 44 of the switch valve 4 is connected to the valve core inlet 32 ​​of the valve core 3. The high-pressure oil from the rotating pump flows into the power-assisted oil chamber 7 through the housing power-assisted hydraulic oil inlet 12 on the hydraulic control valve housing 1, the valve core inlet 32 ​​of the valve core 3, and the internal pipeline of the switch valve 4, consisting of the first switch valve port 41, the connecting oil passage 42, and the second switch valve port 43. At this time, the power-assisted oil chamber 7 contains high-pressure hydraulic oil.

[0055] like Figure 9 As shown, in the second working state, when the driver continuously depresses the brake pedal, the high-pressure oil from the power pump continuously flows into the power assist oil chamber 7 through the housing assist hydraulic oil inlet 12 on the hydraulic control valve housing 1, the valve core oil inlet 32 ​​on the valve core 3, and the internal pipeline of the switching valve 4 consisting of the first switching valve oil port 41, the connecting oil passage 42, and the second switching valve oil port 43. This pushes the valve core 3 and the clutch fork assembly 2 to move until the rear brake high-pressure gas passage 35 in the valve core 3 just begins to contact the rear brake high-pressure gas inlet 15 on the hydraulic control valve housing 1. At this time, the rear brake high-pressure gas passage 35 and the hydraulic control valve housing 1... The rear brake high-pressure gas inlet 15 is not open, and the initial length of the brake spring 6 is set so that the valve core 3 just begins to contact the brake spring 6. The magnitude of the high-pressure oil assist F1 (by setting the oil pressure and the assist area of ​​the valve core 3) is set to be equal to or approximately equal to the magnitude of the thrust F2 required by the clutch rocker arm. When the valve core 3 just begins to contact the brake spring 6, the driver will feel the brake pedal become harder because of the additional resistance of the brake spring 6. The pedal is softer when the clutch is engaged, and becomes harder when the braking system begins to engage. Based on the two pedal forces of clutch and brake, the driver can lightly press the brake pedal to control only the clutch, or press the brake pedal deeply to achieve both clutch and brake.

[0056] like Figure 10As shown, in the third working state, based on the second working state of the hydraulic control valve, if the driver needs to brake, after feeling the brake pedal harden (adding extra pedal force to overcome the resistance of the brake spring 6), the driver should continue to press the brake pedal. The high-pressure oil from the rotary pump flows continuously into the power assist chamber 7 through the housing assist hydraulic oil inlet 12 on the hydraulic control valve housing 1, the valve core oil inlet 32 ​​of the valve core 3, and the internal pipeline of the switching valve 4 consisting of the first switching valve oil port 41, the connecting oil circuit 42, and the second switching valve oil port 43 to provide assistance. The driver needs to add extra pedal force to overcome the resistance of the brake spring 6. Finally, the rear brake high-pressure gas channel 35 and the hydraulic control valve... The rear brake high-pressure gas inlet 15 and the rear brake high-pressure gas outlet 17 on the housing 1 are connected. The high-pressure gas from the rear brake reservoir enters the rear brake ABS solenoid valve through the hydraulic control valve to power the rear brake chamber. Furthermore, the front brake high-pressure gas channel 34, the front brake high-pressure gas inlet 14 and the front brake high-pressure gas outlet 16 on the hydraulic control valve housing 1 are connected. The high-pressure gas from the front brake reservoir enters the front brake ABS solenoid valve through the hydraulic control valve assembly to power the front brake chamber. Finally, the front and rear brakes start to work. The response time of the front and rear brakes can be achieved by changing the size of the front and rear brake high-pressure gas channels. The specific scheme has been described above and will not be repeated here.

[0057] like Figure 11 As shown, in the fourth operating state, when the hydraulic control valve is in any of the first, second, and third operating states, if the driver releases the brake pedal, the switching valve 4 returns to its original position under the action of the switching valve spring 5. At this time, the relative position of the switching valve 4 and the valve core 3 returns to its initial state (e.g., ...). Figure 7 As shown), the power-assisted oil chamber 7 is connected to the rotating oil reservoir via the valve core inlet / outlet 33 of the valve core 3, the internal pipeline of the switching valve 4 consisting of the connecting oil passage 42, the second switching valve port 43, and the third switching valve port 44, the valve core outlet 31 of the valve core 3, and the housing power-assisted hydraulic oil outlet 13 on the hydraulic control valve housing 1. At this time, the hydraulic oil pressure in the power-assisted oil chamber 7 is 0. Under the action of the clutch diaphragm spring, the clutch rocker arm drives the clutch fork assembly 2 and the valve core 3 to move in opposite directions until the hydraulic control valve returns to its initial state (as shown). Figure 7 (As shown). During this process, if the driver presses the brake pedal again, the high-pressure hydraulic system will provide power assistance again, returning to normal. Figure 8 , Figure 9 , Figure 10The diagram shows several operating states. Simply put, the hydraulically controlled pneumatic valve of this invention can freely switch between power assist and return modes. It should be noted that in other embodiments of this invention, the high-pressure oil can be provided by other power sources, such as the suspension oil pump in a fully active hydraulic suspension; this invention does not specifically limit this.

[0058] like Figure 12 As shown, in the fifth working state, the hydraulic control valve assist is disabled. At this time, when the driver presses the brake pedal, the hydraulic oil of the brake master cylinder pushes the switch valve 4 to move. The switch valve 4 drives the valve core 3 and the clutch shift fork assembly 2 to move, thereby realizing the clutch and braking functions. Because there is no hydraulic assist, the brake pedal force is relatively large in this working state. The working process of the hydraulic control valve assembly returning to its original position is the same as the working process of the hydraulic control valve in the fourth working state, and will not be described again here.

[0059] The hydraulically controlled air valve provided in this invention has its housing connected to the oil outlet of the engine's rotary pump. High-pressure oil from the rotary pump is drawn into the valve for assistance, providing power to the vehicle's braking and clutch when controlled by a single pedal. This reduces pedal force and improves comfort. The function of the clutch slave pump is integrated into the hydraulically controlled air valve, eliminating the need for a separate slave pump and simplifying the entire clutch and braking system. This allows for single-pedal control of the vehicle's braking and clutch, solving the problems of long response times and low integration in traditional braking systems that rely on separate pedals. The entire braking and clutch system is simple in structure, low in cost, fast in response, and provides good braking performance, making it a promising market prospect.

[0060] like Figure 3 As shown, the present invention also provides an automotive clutch and brake control system, comprising:

[0061] The main control circuit includes a master cylinder and a pedal, wherein the pedal is electrically connected to the master cylinder and is used to control the fluid flow rate of the master cylinder;

[0062] Braking auxiliary circuit, including clutch rocker arm, rear brake air reservoir, rear brake chamber, front brake air reservoir, and front brake chamber; and,

[0063] A hydraulically controlled air valve is located between the main control circuit and the auxiliary braking circuit to connect the main control circuit and the auxiliary braking circuit. The hydraulically controlled air valve is the aforementioned hydraulically controlled air valve.

[0064] The automotive clutch and brake control system provided in this invention connects the hydraulic control valve housing to the oil outlet of the engine's rotary pump. High-pressure oil from the rotary pump is drawn to the hydraulic control valve for assistance, providing power to the vehicle's braking and clutch when controlled by a single pedal. This reduces pedal force and improves comfort. By integrating the clutch slave cylinder's function into the hydraulic control valve, the original clutch slave cylinder is eliminated, simplifying the entire clutch and brake system structure. This allows for single-pedal control of the vehicle's braking and clutch, solving the problems of long response times and low integration in traditional technologies where clutch and brake are controlled by separate pedals. The entire braking and clutch system is simple in structure, low in cost, fast in response, and provides good braking performance, showing great market potential.

[0065] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0066] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A pilot operated gas valve characterized by, The utility model provides a liquid control gas valve housing is connected with the dynamic pump oil outlet on the engine to make the high pressure oil of dynamic pump can enter the liquid control gas valve and carry out power assistance, the liquid control gas valve housing includes the small cylindrical shell and big cylindrical shell of different diameters arranged in sequence along left and right directions, the valve core that can slide along the axis is arranged in the liquid control gas valve housing, the valve core includes hollow pipe and solid cylinder arranged in sequence, the hollow pipe corresponds with the small cylindrical shell and can slide to the area of big cylindrical shell, the solid cylinder corresponds with the big cylindrical shell, the solid cylinder outside of valve core is connected with the clutch yoke assembly that can extend to the outside of liquid control gas valve housing, the hollow pipe of valve core is provided with the on-off valve that can slide along the axis, the right end of on-off valve is provided with on-off valve spring, the brake spring that is located in the right end of liquid control gas valve housing is arranged in the liquid control gas valve housing, the non-power hydraulic oil inlet, the shell power hydraulic oil inlet, the shell power hydraulic oil outlet, the front brake high pressure gas inlet, the rear brake high pressure gas inlet, the front brake high pressure gas outlet, the rear brake high pressure gas outlet are provided on the liquid control gas valve housing, wherein, the non-power hydraulic oil inlet is arranged on the left end surface of small cylindrical shell of liquid control gas valve housing, the non-power hydraulic oil inlet is connected with the brake master pump in the cab, the top end of solid cylinder is provided with the front brake high pressure gas passage and rear brake high pressure gas passage symmetrically. The shell power hydraulic oil inlet is arranged at the top center position of small cylindrical shell of liquid control gas valve housing, the shell power hydraulic oil outlet is arranged at the bottom center position of small cylindrical shell of liquid control gas valve housing, the front brake high pressure gas inlet and rear brake high pressure gas inlet are symmetrically arranged at the top of big cylindrical shell of liquid control gas valve housing, and the line connection of front brake high pressure gas inlet and rear brake high pressure gas inlet is perpendicular to the axial direction of liquid control gas valve housing, the front brake high pressure gas outlet and rear brake high pressure gas outlet are symmetrically arranged at the bottom of big cylindrical shell of liquid control gas valve housing, and the line connection of front brake high pressure gas outlet and rear brake high pressure gas outlet is perpendicular to the axial direction of liquid control gas valve housing.

2. The pilot operated gas valve of claim 1, wherein, The shell power hydraulic oil inlet is connected with the dynamic pump oil outlet on the engine, the shell power hydraulic oil outlet is connected with the dynamic oil pot inlet, the front brake high pressure gas inlet is connected with the front brake gas reservoir gas outlet, the front brake high pressure gas outlet is connected with the front brake ABS solenoid valve gas inlet, the rear brake high pressure gas inlet is connected with the rear brake gas reservoir gas outlet, and the rear brake high pressure gas outlet is connected with the rear brake ABS solenoid valve gas inlet.

3. The pilot operated gas valve of claim 2 wherein, The right side of big cylindrical shell of liquid control gas valve housing is provided with mounting plate, a plurality of liquid control gas valve mounting holes for mounting liquid control gas valve are formed in the mounting plate, the shape of mounting plate is rounded square, the number of liquid control gas valve mounting hole is 4, and is symmetrically arranged at the four corner edges of mounting plate.

4. The pilot operated gas valve of claim 1 wherein, ​ 5. The pilot operated gas valve of claim 1 wherein, The clutch yoke assembly comprises a clutch yoke and a clutch yoke push rod, one end of the clutch yoke push rod is connected to the right end of the spool, the axis direction of the clutch yoke push rod is consistent with the axis direction of the hydro-control pneumatic valve housing, the other end of the clutch yoke push rod is connected with the clutch yoke.

6. The pilot operated gas valve of claim 3 wherein, The hollow circular tube of the spool extends into the solid cylinder, a waist-shaped hole is formed at the lower position of the hollow circular tube of the spool as a spool oil outlet, a waist-shaped hole is formed at the upper position of the hollow circular tube as a spool oil inlet, a hole is formed at the top end and the lower end of the position of the hollow circular tube close to the solid cylinder as a spool oil inlet and outlet, the size of the rear brake high-pressure gas channel is larger than the size of the front brake high-pressure gas channel, and the line connecting the front brake high-pressure gas channel and the rear brake high-pressure gas channel is perpendicular to the axis direction of the solid cylinder, the right side end surface of the solid cylinder is provided with a clutch yoke push rod mounting seat for mounting the clutch yoke assembly, and the connection between the hollow circular tube and the solid cylinder is provided with a spring mounting seat for mounting the on-off valve spring.

7. The pilot operated gas valve of claim 6 wherein, The cross section of the on-off valve is approximately T-shaped, the on-off valve comprises a first on-off valve oil port, a second on-off valve oil port and a third on-off valve oil port arranged in a vertical direction, a communication oil passage arranged in a horizontal direction is arranged between the first on-off valve oil port, the second on-off valve oil port and the third on-off valve oil port, the first on-off valve oil port is located at the upper left of the communication oil passage and extends upward to the top of the on-off valve, the second on-off valve oil port is located at the right of the communication oil passage and respectively extends upward to the top of the on-off valve and downward to the bottom of the on-off valve, and the third on-off valve oil port is located below the middle of the communication oil passage and extends downward to the bottom of the on-off valve.

8. The pilot operated gas valve of claim 7 wherein, The right side circumferential outer side of the hollow circular tube is provided with a power-assisted oil cavity corresponding to the position of the spool oil inlet and outlet.

9. The pilot operated gas valve of claim 8 wherein, In the initial state of the hydro-control pneumatic valve, the power-assisted oil cavity is connected with the movable oil pot through the spool oil inlet and outlet of the spool, the internal pipeline composed of the third on-off valve oil port, the communication oil passage and the second on-off valve oil port of the on-off valve, the spool oil outlet of the spool, and the housing power-assisted hydraulic oil outlet on the hydro-control pneumatic valve housing, at this time, the hydraulic oil pressure in the power-assisted oil cavity of the hydro-control pneumatic valve assembly is 0; The working state of the hydro-control pneumatic valve comprises a first working state, a second working state, a third working state, a fourth working state and a fifth working state, wherein: In the first working state, when the driver just steps on the brake pedal, the brake master cylinder pushes the oil into the non-boost hydraulic oil inlet of the hydraulic control valve housing, the switch valve moves and compresses the switch valve spring, the internal pipeline of the switch valve composed of the third switch valve oil port, the communication oil way and the second switch valve oil port is disconnected with the valve core oil outlet, and the third switch valve oil port of the switch valve communicates with the valve core oil inlet, the high-pressure oil of the dynamic converter pump flows into the boost oil cavity through the housing boost hydraulic oil inlet on the hydraulic control valve housing, the valve core oil inlet of the valve core, the internal pipeline of the switch valve composed of the first switch valve oil port, the communication oil way and the second switch valve oil port, and the boost oil cavity is filled with high-pressure hydraulic oil at this time; In the second working state, when the driver continues to step on the brake pedal, the high-pressure oil of the dynamic converter pump continuously flows into the boost oil cavity through the housing boost hydraulic oil inlet on the hydraulic control valve housing, the valve core oil inlet of the valve core, the internal pipeline of the switch valve composed of the first switch valve oil port, the communication oil way and the second switch valve oil port, and drives the valve core and the clutch yoke assembly to move, until the rear brake high-pressure gas passage in the valve core just starts to contact with the rear brake high-pressure gas inlet on the hydraulic control valve housing, at this time, the rear brake high-pressure gas passage and the rear brake high-pressure gas inlet on the hydraulic control valve housing are not conductive, and the initial length of the brake spring is set so that the valve core just starts to contact with the brake spring at this time, and the size F1 of the high-pressure oil boost is set to be equal to or approximately equal to the required thrust size F2 of the clutch rocker arm; when the valve core just starts to contact with the brake spring, the driver will feel that the brake pedal becomes hard, the pedal is relatively soft when the clutch works, the pedal starts to become hard when the brake system starts to work, and the driver can control only the clutch by stepping on the brake pedal lightly, or realize the clutch and the brake by stepping on the brake pedal deeply. In the third working state, on the basis of the second working state of the hydraulic control gas valve, if the driver needs to brake, the high-pressure oil of the dynamic rotary pump continuously flows into the assist oil chamber through the shell assist hydraulic oil inlet on the hydraulic control gas valve shell, the valve core oil inlet of the valve core, the internal pipeline composed of the first switch valve oil port, the communication oil way and the second switch valve oil port of the switch valve, and the driver needs to additionally increase the pedal force to overcome the resistance of the brake spring, finally the rear brake high-pressure gas passage, the rear brake high-pressure gas inlet on the hydraulic control gas valve shell and the rear brake high-pressure gas outlet are connected in communication, the high-pressure gas of the rear brake gas cylinder enters the rear brake ABS electromagnetic valve through the hydraulic control gas valve to supply energy to the rear brake chamber; and the front brake high-pressure gas passage, the front brake high-pressure gas inlet on the hydraulic control gas valve shell and the front brake high-pressure gas outlet are connected in communication, the high-pressure gas of the front brake gas cylinder enters the front brake ABS electromagnetic valve through the hydraulic control gas valve assembly to supply energy to the front brake chamber, and finally the front and rear brakes start to work. In the fourth working state, when the hydraulic control gas valve is in any one of the first working state, the second working state and the third working state, if the driver releases the brake pedal, the switch valve is reset under the action of the switch valve spring, at this time the relative position of the switch valve and the valve core returns to the initial state, the assist oil chamber is connected with the dynamic rotary oil pot through the valve core oil inlet and outlet of the valve core, the internal pipeline composed of the communication oil way, the second switch valve oil port and the third switch valve oil port of the switch valve, the valve core oil outlet of the valve core and the shell assist hydraulic oil outlet on the hydraulic control gas valve shell, at this time the hydraulic oil pressure in the assist oil chamber is 0; under the action of the clutch diaphragm spring, the clutch rocker arm drives the clutch yoke assembly and the valve core to move reversely until the hydraulic control gas valve returns to the initial state. In the fifth working state, the hydraulic control gas valve assist fails, at this time, when the driver steps on the brake pedal, the hydraulic oil of the brake master cylinder drives the switch valve to move, the switch valve drives the valve core and the clutch yoke assembly to move, so as to realize the functions of clutching and braking; the working process of the hydraulic control gas valve assembly when it is reset is the same as that in the fourth working state.

10. An automotive clutch brake handling system characterized by, Comprise: A control main path, comprising a brake master cylinder and a pedal, the pedal being electrically connected with the brake master cylinder, used for controlling the liquid flow of the brake master cylinder; A brake auxiliary path, comprising a clutch rocker arm, a rear brake gas cylinder, a rear brake chamber, a front brake gas cylinder and a front brake chamber; And, A hydraulic control gas valve, arranged between the control main path and the brake auxiliary path, used for connecting the control main path and the brake auxiliary path, the hydraulic control gas valve being the hydraulic control gas valve according to any one of claims 1 to 9.

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