Ebs rear axle control module assembly

Abstract

The application relates to the field of EBS rear axle control, and discloses an EBS rear axle control module assembly, wherein a control unit is connected with electromagnetic valves to control the opening and closing of the electromagnetic valves; at least an air inlet, a control port, an air outlet connected with a foot valve, a relay valve, an air outlet one connected with a left air chamber and an air outlet two connected with a right air chamber are arranged on the valve body; a pressure sensor is connected with the air outlet one and the air outlet two, the pressure sensor is used for collecting the pressure of the air outlet one and the air outlet two, the pressure sensor is connected with the control unit, and the control unit controls the opening and closing of the electromagnetic valves according to the collected pressure sensor and signals applied by a vehicle to realize the regulation of the pressure of the air outlet one and the air outlet two. The assembly has the advantages of light weight, compact structure, improved response time, cost saving, convenient pipeline arrangement and installation and maintenance, etc.

Description

TECHNICAL FIELD

[0001] The application relates to the field of automobile braking, in particular to an EBS rear axle control module assembly. BACKGROUND

[0002] Since the birth of the automobile, the vehicle braking system has played an important role in vehicle safety. In recent years, with the progress of vehicle technology and the increase of vehicle driving speed, the demand for improving vehicle braking effect and shortening braking time has been increasing. However, the ordinary braking system adopts a gas control gas technical scheme, that is, a gas is used as a controller device starter to control the on-off of the brake gas. This way needs a certain time for the transmission of the control gas to the control point, thereby causing a delay in braking. The EBS system improves this shortcoming by adopting an electric control gas driving scheme. The EBS single-channel electric control axle control valve assembly, as a core component of the EBS system, directly affects the braking effect of the EBS system. However, the existing EBS electric control axle control valve assembly has a complex arrangement, and most of the electromagnetic valves are arranged at the gas port to increase the inner diameter of the gas hole. In addition, the independent arrangement of each electromagnetic valve is not conducive to modularization, and the cost is high. For example, the EBS single-channel electric control axle control valve assembly disclosed in Chinese patent CN202121278557.3 adopts a scheme in which the control gas path and the electric control path coexist, and the piston is controlled by the control gas path, so that the gas control mode can still operate normally under the failure condition of the EBS system, thereby improving the safety of braking. However, the degree of integration is not high enough, and it cannot meet the increasing demand for integration and lightness. SUMMARY

[0003] The application provides a retarder control device and a vehicle to solve the problems in the prior art.

[0004] To solve the above technical problems, the application solves the problems by the following technical solutions:

[0005] The EBS rear axle control module assembly comprises a valve body, an upper cover arranged on the upper part of the valve body, an installation cavity for installing an electromagnetic valve arranged on the valve body, and a control unit. The control unit is a PCB board, and is arranged between the valve body and the upper cover. The control unit is connected with the electromagnetic valve to control the opening and closing of the electromagnetic valve.

[0006] The valve body is provided with at least an air inlet, a control port, an air outlet connected with a foot valve, a relay valve, an air outlet one connected with a left air chamber, and an air outlet two connected with a right air chamber.

[0007] The valve body is further provided with a relay valve, the electromagnetic valves include A1 electromagnetic valve, A2 electromagnetic valve, A3 electromagnetic valve, A4 electromagnetic valve, A5 electromagnetic valve, A6 electromagnetic valve and A7 electromagnetic valve, the A1 electromagnetic valve is a standby pressure electromagnetic valve, the standby pressure electromagnetic valve is used for cutting off the passage between the control port and the upper cavity of the piston; the A2 electromagnetic valve is a pressure increasing electromagnetic valve, used for opening the passage between the air inlet and the upper cavity of the piston, and used for increasing the pressure of the upper cavity of the piston; the A3 electromagnetic valve is a pressure reducing electromagnetic valve, used for opening the passage between the relay valve and the upper cavity of the piston, so that the pressure of the upper cavity of the piston is reduced; the A4 electromagnetic valve is a pressure maintaining electromagnetic valve, used for cutting off the passage between the A cavity and the air outlet one, so that the pressure is maintained; the A5 electromagnetic valve is a pressure reducing electromagnetic valve, used for opening the passage between the relay valve and the air outlet, so that the pressure is reduced; the A6 electromagnetic valve is a pressure maintaining electromagnetic valve, used for cutting off the passage between the A cavity and the air outlet two, so that the pressure is maintained; the A7 electromagnetic valve is a pressure reducing electromagnetic valve, used for opening the passage between the relay valve and the air outlet two, so that the pressure is reduced; the air outlet one and the air outlet two are connected with a pressure sensor, the pressure sensor is used for collecting the pressure of the air outlet one and the air outlet two, and the pressure sensor is connected with a control unit, the control unit controls the opening and closing of each electromagnetic valve according to the collected pressure sensor and the signal applied by the vehicle, so that the pressure of the air outlet one and the air outlet two is adjusted.

[0008] As preferred, the air inlet is used for being connected with the gas reservoir, the valve body is provided with a passage twenty-five, a passage one, a passage twenty-six, a passage twenty-one and a passage twenty-two, the air inlet is sequentially communicated with the passage twenty-five, the passage one, the passage twenty-six, the passage twenty-five, the passage one, the passage twenty-six and the passage twenty-one, the passage twenty-one and the passage twenty-two are communicated or disconnected through the A2 electromagnetic valve, and the A2 electromagnetic valve is a normally closed electromagnetic valve.

[0009] The valve body is further provided with a passage thirty-three, a passage thirty-two, a passage twenty-three and a passage three, the control port is communicated with the passage twenty-three through the passage thirty-three and the passage thirty-two, the A1 electromagnetic valve is used for controlling the communication or disconnection of the passage three and the passage twenty-three, and the A1 electromagnetic valve is a normally open electromagnetic valve.

[0010] As preferred, the valve body is further provided with a passage two, the relay valve includes a piston and a valve assembly, the valve assembly includes an air inlet valve port and an air outlet valve port, the air outlet valve port is opened and the air inlet valve port is closed in an initial state; when the pressure in the passage twenty-two becomes larger, the air pressure can drive the piston to move and drive the valve assembly to move, the valve assembly first closes the air outlet valve port and then opens the air inlet valve port; the air inlet valve port is communicated with the passage two in an open state.

[0011] As preferred, the valve body is further provided with a passage two, the passage two is communicated with five branches, including two branches connected with the left gas chamber and two branches connected with the right gas chamber, and the gas paths connected with the left gas chamber and the right gas chamber are the same;

[0012] The valve body is provided with a passage thirty-five, a gas port three and a passage thirty-two, the first path is communicated with the gas port three through the passage thirty-five provided in the valve body, further comprising a passage thirty-four and a gas pressure sensor, when the gas port three is connected with the gas pressure sensor through the passage thirty-two and the passage thirty-four, the gas pressure sensor is connected with the control unit;

[0013] The second path is communicated to the passage eleven provided in the valve body through the twenty-third port, further comprising a diaphragm assembly one and a passage twelve, the diaphragm assembly one is used for controlling the communication and disconnection of the passage eleven and the passage twelve, when the pressure of the passage eleven is larger, the diaphragm assembly one can be opened to communicate with the passage twelve;

[0014] The passage twelve is communicated with two branches, one branch is communicated with the passage seven through the passage thirty-one, the passage twenty-nine, the passage thirteen, the passage fourteen provided in the valve body in sequence, the passage seven is located on the upper side of the diaphragm assembly two, the diaphragm assembly two can control the communication and disconnection of the passage eight and the passage nine, the opening and closing of the diaphragm assembly two is controlled by the pressure in the passage seven;

[0015] The second branch of the passage twelve is communicated with the passage seventeen through the passage thirty-one, further comprising the passage seventeen and the passage sixteen which are controlled by the electromagnetic valve;

[0016] The third path is communicated with the passage six, the A3 electromagnetic valve is a normally closed valve, the A4 electromagnetic valve controls the communication and disconnection of the passage six and the passage four, the passage four is communicated with a relay valve, when the gas pressure in the passage six is reduced, the gas pressure in the passage two will push the piston to move upwards to open the exhaust port of the valve assembly, and the gas pressure in the passage two is reduced.

[0017] As preferred, according to the EBS rear axle control module assembly of claim 5, the valve body is provided with the passage sixteen and the passage seventeen, the A4 electromagnetic valve is used for controlling the communication and disconnection of the passage sixteen and the passage seventeen, and simultaneously controlling the disconnection and communication of the passage sixteen and the passage twenty, when the A4 electromagnetic valve is powered, the passage eleven and the passage twelve are disconnected, and the gas pressure of the gas outlet one is unchanged.

[0018] As preferred, the A5 electromagnetic valve is used for controlling the communication or disconnection of the passage thirteen and the passage fourteen, and simultaneously controlling the communication or disconnection of the passage fourteen and the passage fifteen, the passage fifteen and the passage twenty-eight are communicated, the passage twenty-eight is communicated with the relay valve, the passage seven is communicated with the relay valve, the diaphragm assembly four controls the communication or disconnection of the passage eight and the passage nine, when the pressure of the passage eight is larger, the diaphragm assembly can be opened to communicate with the passage nine, the gas outlet one can be communicated to the relay valve through the passage twelve, the passage eight and the passage nine.

[0019] The application has the following remarkable technical effects due to the adoption of the above technical scheme:

[0020] Compared with the prior art, the present application has the following obvious advantages and positive effects: light weight; compact structure; response time improved; cost saved; convenient pipeline arrangement, installation and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the schematic diagram of the present application.

[0022] Figure 2 is the schematic diagram of the overall appearance of the assembly.

[0023] Figure 3 is the schematic diagram of the internal structure of the assembly.

[0024] Figure 4 is the schematic diagram of the internal structure of the assembly.

[0025] Figure 5 is the schematic diagram of the internal structure of the assembly.

[0026] Figure 6 is the schematic diagram of the internal structure of the assembly.

[0027] Figure 7 is the schematic diagram of the internal structure of the assembly.

[0028] Figure 8 is the schematic diagram of the internal structure of the assembly.

[0029] The technical names of the reference signs in the drawings are as follows: 1-valve body, 2-upper cover, 3-control unit, 4-inlet, 6-control port, 5-outlet one, 7-outlet two, 8-A1 solenoid valve, 9-A2 solenoid valve, 10-A3 solenoid valve, 11-A4 solenoid valve, 12-A5 solenoid valve, 13-A6 solenoid valve, 14-A7 solenoid valve, 15-piston, 16-pressure sensor, 17-channel twenty-five, 18-channel one, 19-channel twenty-six, 20-channel twenty-one, 21-channel twenty-two, 22-channel thirty-three, 23-channel thirty-two, 24-channel twenty-three, 25-channel three, 26-channel two, 27-valve assembly, 28-inlet valve port, 29-outlet valve port, 31-channel thirty-five, 32-inlet three, 34-channel thirty-four, 35-channel eleven, 37-diaphragm assembly one, 38-channel twelve, 39-channel thirty-one, 40-channel twenty-nine, 41-channel thirteen, 42-channel fourteen, 43-channel seven, 45-channel eight, 46-channel nine, 47-diaphragm assembly two, 48-channel six, 49-channel seventeen, 50-channel sixteen, 52-channel four, 53-channel twenty-eight, 54-diaphragm assembly four, 55-diaphragm assembly three, 56-relay valve, 57-channel fifteen. DETAILED DESCRIPTION

[0030] The application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] Embodiment 1

[0032] The EBS rear axle control module assembly comprises a valve body 1, an upper portion of the valve body 1 is provided with an upper cover 2, the valve body 1 is provided with a mounting cavity for mounting an electromagnetic valve, a control unit 3, the control unit 3 is a PCB board, the control unit 3 is arranged between the valve body 1 and the upper cover 2, the control unit 3 is connected with the electromagnetic valve to control the opening and closing of the electromagnetic valve; the rear axle control module assembly is an integrated structure, the gas passages between each electromagnetic valve and the gas port are connected through the passages or cavities arranged in the valve body 1.

[0033] In the scheme, the valve body 1 is provided with at least an air inlet 4, a control port 6, an air outlet connected with a foot valve, a relay valve 64, an air outlet one 5 connected with a left gas chamber and an air outlet two 7 connected with a right gas chamber; the assembly further comprises an air outlet three 32 and an air outlet four, the air outlet three 32 and the air outlet four are provided with plugs.

[0034] The valve body 1 is further provided with a relay valve 56, the electromagnetic valves comprise an A1 electromagnetic valve 8, an A2 electromagnetic valve 9, an A3 electromagnetic valve 10, an A4 electromagnetic valve 11, an A5 electromagnetic valve 12, an A6 electromagnetic valve 13 and an A7 electromagnetic valve 14, the A1 electromagnetic valve 8 is a backup pressure electromagnetic valve, the backup pressure electromagnetic valve is used to cut off the passage between the control port 6 and the upper cavity of the piston 15; the A2 electromagnetic valve 9 is a pressure increasing electromagnetic valve, used to open the passage between the air inlet 4 and the upper cavity of the piston 15, used to increase the pressure of the upper cavity of the piston 15; the A3 electromagnetic valve 10 is a pressure reducing electromagnetic valve, used to open the passage between the relay valve 64 and the upper cavity of the piston 15, so as to realize the pressure reduction of the upper cavity of the piston 15; the A4 electromagnetic valve 11 is a pressure maintaining electromagnetic valve, used to cut off the passage between the A cavity and the air outlet one 5 to realize pressure maintaining; the A5 electromagnetic valve 12 is a pressure reducing electromagnetic valve, used to open the passage between the relay valve 64 and the air outlet, so as to realize pressure reduction; the A6 electromagnetic valve 13 is a pressure maintaining electromagnetic valve, used to cut off the passage between the A cavity and the air outlet two 7, so as to realize pressure maintaining; the A7 electromagnetic valve 14 is a pressure reducing electromagnetic valve, used to open the passage between the relay valve 64 and the air outlet two 7, so as to realize pressure reduction; the air outlet one 5 and the air outlet two 7 are connected with a pressure sensor 16, the pressure sensor 16 is used to collect the pressure of the air outlet one 5 and the air outlet two 7, the pressure sensor 16 is connected with the control unit 3, the control unit 3 controls the opening and closing of each electromagnetic valve according to the collected pressure sensor 16 and the signals applied by the vehicle, so as to realize the adjustment of the pressure of the air outlet one 5 and the air outlet two 7. The seven groups of electromagnetic valves are directly connected with the control unit 3, each electromagnetic valve can be controlled individually.

[0035] In the embodiment, the air inlet 4 is used to connect with the air cylinder, the valve body 1 is provided with a passage twenty-five 17, a passage one 18, a passage twenty-six 19, a passage twenty-one 20 and a passage twenty-two 21, the air inlet 4 is communicated with the passage twenty-five 17, the passage one 18, the passage twenty-six 19, the passage twenty-five 17, the passage one 18, the passage twenty-six 19 and the passage twenty-one 20 in sequence, the passage twenty-one 20 and the passage twenty-two 21 are communicated or disconnected by the A2 electromagnetic valve 9, and the A2 electromagnetic valve 9 is a normally closed electromagnetic valve.

[0036] The valve body 1 is further provided with a passage thirty-three 22, a passage thirty-two 23 and a passage twenty-three 24 and a passage three 25, the control port 6 is communicated with the passage twenty-three 24 through the passage thirty-three 22 and the passage thirty-two 23, and the A1 electromagnetic valve 8 is used to control the communication or disconnection of the passage three 25 and the passage twenty-three 24, and the A1 electromagnetic valve 8 is a normally open electromagnetic valve.

[0037] In the embodiment, the valve body 1 is further provided with a passage two 26, the relay valve 56 comprises a piston 15 and a valve assembly 27, the valve assembly 27 comprises an air inlet valve port 28 and an air outlet valve port 29, the air outlet valve port 29 is opened and the air inlet valve port 28 is closed in the initial state, when the pressure in the passage twenty-two 21 becomes larger, the air pressure can drive the piston 15 to move and drive the valve assembly 27 to move, the valve assembly 27 first closes the air outlet valve port 29 and then opens the air inlet valve port 28, and the air inlet valve port 28 is communicated with the passage two 26 in the opened state.

[0038] The valve body 1 is further provided with the passage two 26, the passage two 26 is communicated with five branches, including two branches communicated with the left air chamber and two branches communicated with the right air chamber, the air paths connected with the left air chamber and the right air chamber are the same, and the left channel will be introduced as follows,

[0039] The valve body 1 is provided with a passage thirty-five 31, an air port three 32 and a passage thirty-two 23, a first branch is communicated with the air port three 32 through the passage thirty-five 31 arranged in the valve body 1, further comprising a passage thirty-four 34 and a gas pressure sensor, the air port three 32 is connected with the gas pressure sensor through the passage thirty-two 23 and the passage thirty-four 34, and the gas pressure sensor is connected with the control unit 3.

[0040] A second branch is communicated to a passage eleven 35 arranged in the valve body 1 through the twenty-three port, further comprising a diaphragm assembly one 37 and a passage twelve 38, the diaphragm assembly one 37 is used to control the communication and disconnection of the passage eleven 35 and the passage twelve 38, and when the pressure of the passage eleven 35 is larger, the diaphragm assembly one 37 is opened to communicate with the passage twelve 38;

[0041] The channel twelve 38 is communicated with two branches, one branch is communicated with channel thirty-one 39, channel twenty-nine 40, channel thirteen 41, channel fourteen 42 and channel seven 43 in turn, channel seven 43 is located on the upper side of diaphragm assembly two 47, diaphragm assembly two 47 can control the communication and disconnection of channel eight 45 and channel nine 46, the opening and closing of diaphragm assembly two 47 is controlled by the pressure in channel seven 43;

[0042] The second branch of channel twelve 38 is communicated with channel thirty-one 39 and channel seventeen 49, and further comprises channel seventeen 49 and channel sixteen 50 controlled by an electromagnetic valve;

[0043] The third channel two 26 is communicated with channel six 48, A3 electromagnetic valve 10 is a normally closed valve, A4 electromagnetic valve 11 controls the communication and disconnection of channel six 48 and channel four 52, channel four 52 is communicated with relay valve 64, when the air pressure in channel six 48 is reduced, the air pressure in channel two 26 will push the piston 15 to move upward to open the exhaust valve port 29 of valve assembly 27, and reduce the air pressure in channel two 26.

[0044] The valve body 1 is provided with channel sixteen 50 and channel seventeen 49, A4 electromagnetic valve 11 is used to control the communication and disconnection of channel sixteen 50 and channel seventeen 49, and control the disconnection and communication of channel sixteen 50 and channel twenty 60 at the same time; when A4 electromagnetic valve 11 is electrified, channel eleven 35 and channel twelve 38 are disconnected, and the air pressure of outlet one 5 is unchanged.

[0045] Specifically, A5 electromagnetic valve 12 is used to control the communication or disconnection of channel thirteen 41 and channel fourteen 42, and control the communication or disconnection of channel fourteen 42 and channel fifteen 57 at the same time, channel fifteen 57 is communicated with channel twenty-eight 53, channel twenty-eight 53 is communicated with relay valve 64, channel seven 43 is communicated with relay valve 64; diaphragm assembly four 54 controls the communication or disconnection of channel eight 45 and channel nine 46, when the pressure of channel eight 45 is larger, diaphragm assembly can be opened to communicate with channel nine 46, and outlet one 5 can be communicated to relay valve 64 through channel twelve 38, channel eight 45 and channel nine 46.

[0046] The specific working process is as follows:

[0047] Automobile driving brake, air brake valve gives electric signal to EBS rear axle control module assembly, EBS rear axle control module assembly calculates required air pressure through load, pedal opening degree, etc. Air inlet 4 is connected with air reservoir, air inlet 4 is communicated with passage twenty-five 17, passage one 18, passage twenty-six 19, passage twenty-one 20, passage twenty-one 20 is not communicated with passage twenty-two 21, A2 solenoid valve 9 is normally closed valve. Air pressure of air brake valve outlet enters from control port 6, passes through passage thirty-three 22, passage thirty-two 23, reaches passage twenty-three 24, A1 solenoid valve 8 is normally open valve. EBS rear axle control module assembly electrifies A1 solenoid valve 8, cuts off passage from passage twenty-three 24 to passage thirty-five 25. EBS rear axle control module assembly electrifies pressure increasing solenoid valve, makes passage twenty-one 20 communicated with passage twenty-two 21, air pressure reaches passage twenty-two 21 and pushes piston 15 down, contacts valve assembly 27 to close exhaust valve port 29, and pushes valve assembly 27 down to open air inlet port 28, so that compressed air of air reservoir reaches passage two 26 from air inlet 4, air pressure of passage two 26 is divided into five routes, about two routes respectively, two routes of left and right sides are same, now left side passage is introduced. First route passes through passage thirty-five 31, reaches outlet three, outlet three is blocked air port, air pressure of outlet three reaches air pressure sensor through passage thirty-two 23, passage thirty-four 34, air pressure sensor collects air pressure and feeds back to EBS rear axle control module assembly, whether air pressure reaches target value. Another route passes through passage air port three to reach passage eleven 35, under the action of air pressure, opens diaphragm assembly one 37, enters passage twelve 38, passage twelve 38 is divided into two routes, one route reaches air outlet one 5, air outlet one 5 discharges air. Another route of passage twelve 38 enters passage eight 45. Second route passes through passage thirty 61, is divided into two routes, one route passes through passage thirty-one 39, passage twenty-nine 40, passage thirteen 41, passage fourteen 42 to reach passage seven 43, under the action of conical spring 39 and air pressure, presses diaphragm assembly two 47, A5 solenoid valve 12 is normally open valve, makes B8 and B9 cut off. Another route passes through to reach passage seventeen 49, under the action of conical spring, passage seventeen 49 is cut off with passage sixteen 50. Third route, passage two 26 is communicated with passage six 48, A3 solenoid valve 10 is normally closed valve, passage six 48 is not communicated with passage four 52. If air pressure collected by air pressure sensor exceeds target value, A3 solenoid valve 10 is electrified, passage six 48 is communicated with passage four 52, passage six 48 is communicated with relay valve 64, air pressure of passage six 48 is reduced, piston 15 is pushed up by passage two 26, opens valve assembly 27 and relay valve 64 passage, so that passage two 26 is depressurized.

[0048] In the process of braking, if wheel lock occurs at air outlet one 5. EBS rear axle control module assembly will be through the pressure maintaining solenoid valve, pressure reducing solenoid valve is electrified under the joint action of them, the wheel lock is removed.

[0049] Pressure holding process: in the above state, A4 solenoid valve 11 is energized, under the suction force, the valve assembly 27 moves up, making the passage sixteen 50 and passage seventeen 49 open, passage sixteen 50 and passage twenty 60 are cut off, under the action of the gas pressure and the conical spring, the diaphragm assembly three 55 is pressed, thereby cutting off the passage between passage eleven 35 and passage twelve 38. The gas pressure of outlet one 5 remains unchanged, the left and right sides are the same.

[0050] Pressure reducing process: on the basis of the pressure holding state, A5 solenoid valve 12 is energized, under the suction force, the valve assembly 27 moves up, making the passage thirteen 41 and passage fourteen 42 cut off, passage fifteen 57 and passage sixteen 50 open, passage fifteen 57 and passage twenty-eight 53 open, the gas pressure reaches the relay valve 64, thereby the gas pressure of passage seven 43 is discharged. Under the action of the gas pressure in passage eight 45, the diaphragm assembly four 54 is opened, making passage eight 45 and passage nine 46 open, the gas pressure of outlet one 5 passes through passage twelve 38, passage eight 45, passage nine 46 to reach the relay valve 64, making outlet one 5 discharge from the relay valve 64, and the brake is released.

[0051] Example 2

[0052] Vehicle, equipped with the above-mentioned EBS rear axle control module assembly.

[0053] Example 3

[0054] The difference between this embodiment and example 1 is that the control unit 3 is a PCB circuit board.

Claims

1. An EBS rear axle control module assembly, including a valve body (1), a cover (2) on the upper part of the valve body (1), an installation cavity for installing a solenoid valve on the valve body (1), and a control unit (3), the control unit (3) being a PCB board, the control unit (3) being located between the valve body (1) and the cover (2), the control unit (3) being connected to the solenoid valve to control the opening and closing of the solenoid valve; The valve body (1) is provided with at least an air inlet (4), a control port (6), an air outlet connected to the foot valve, an exhaust port (64), an air outlet one (5) connected to the left air chamber, and an air outlet two (7) connected to the right air chamber. The valve body (1) is also equipped with a relay valve (56). The solenoid valves include A1 solenoid valve (8), A2 solenoid valve (9), A3 solenoid valve (10), A4 solenoid valve (11), A5 solenoid valve (12), A6 solenoid valve (13), and A7 solenoid valve (14). A1 solenoid valve (8) is a standby solenoid valve, which is used to cut off the passage between the control port (6) and the upper chamber of the piston (15). A2 solenoid valve (9) is a booster solenoid valve, which is used to open the passage between the air inlet (4) and the upper chamber of the piston (15) to boost the pressure of the upper chamber of the piston (15). A3 solenoid valve (10) is a depressurizing solenoid valve, which is used to open the passage between the exhaust port (64) and the upper chamber of the piston (15) to depressurize the upper chamber of the piston (15). A4 solenoid valve (11) is a pressure-holding solenoid valve, which is used to cut off the passage between chamber A and outlet (5). To achieve pressure holding; A5 solenoid valve (12) is a pressure reducing solenoid valve, used to open the passage between exhaust port (64) and outlet port, thereby reducing pressure; A6 solenoid valve (13) is a pressure holding solenoid valve, used to cut off the passage between chamber A and outlet port two (7), thereby achieving pressure holding; A7 solenoid valve (14) is a pressure reducing solenoid valve, used to open the passage between exhaust port (64) and outlet port two (7), thereby achieving pressure reduction; outlet port one (5) and outlet port two (7) are connected to pressure sensor (16), pressure sensor (16) is used to collect the pressure of outlet port one (5) and outlet port two (7), pressure sensor (16) is connected to control unit (3), control unit (3) controls the opening and closing of each solenoid valve according to the collected pressure sensor (16) and the signal applied by the vehicle to achieve the adjustment of the pressure of outlet port one (5) and outlet port two (7); The air inlet (4) is used to connect with the air storage tank. The valve body (1) is provided with channel 25 (17), channel 1 (18), channel 26 (19), channel 21 (20), and channel 22 (21). The air inlet (4) is connected to channel 21 (20) in sequence through channel 25 (17), channel 1 (18), channel 26 (19), and channel 25 (17), channel 1 (18), and channel 26 (19). Channel 21 (20) and channel 22 (21) are connected or disconnected by solenoid valve A2 (9). Solenoid valve A2 (9) is a normally closed solenoid valve. The valve body (1) is also provided with channel 33 (22), channel 32 (23), channel 23 (24), and channel 3 (25). The control port (6) is connected to channel 23 (24) via channel 33 (22) and channel 32 (23). The A1 solenoid valve (8) is used to control the connection or disconnection of channel 3 (25) and channel 23 (24). The A1 solenoid valve (8) is a normally open solenoid valve.

2. The EBS rear axle control module assembly according to claim 1, characterized in that: The valve body (1) is also provided with a channel two (26). The relay valve (56) includes a piston (15) and a valve assembly (27). The valve assembly (27) includes an inlet valve port (28) and an exhaust valve port (29). In the initial state, the exhaust valve port (29) is open and the inlet valve port (28) is closed. When the pressure in the channel twenty-two (21) increases, the air pressure can push the piston (15) to move and drive the valve assembly (27) to move. The valve assembly (27) first closes the exhaust valve port (29) and then opens the inlet valve port (28). When the inlet valve port (28) is open, the inlet port (4) is connected to the channel two (26).

3. The EBS rear axle control module assembly according to claim 1, characterized in that: The valve body (1) is also provided with a channel two (26), which is connected to five branches, including two branches that connect to the left air chamber and two branches that connect to the right air chamber. The air passages that connect to the left air chamber and the air passages that connect to the right air chamber are the same. The valve body (1) is provided with channel 35 (31), air port 3 (32) and channel 32 (23). The first path is connected to air port 3 (32) through channel 35 (31) provided in the valve body (1). It also includes channel 34 (34) and air pressure sensor. When air port 3 (32) is connected to air pressure sensor through channel 32 (23) and channel 34 (34), air pressure sensor is connected to control unit (3). The second path is connected to channel eleven (35) inside the valve body (1) through twenty-three ports, and also includes diaphragm assembly one (37) and channel twelve (38). Diaphragm assembly one (37) is used to control the connection and disconnection of channel eleven (35) and channel twelve (38); Channel 12 (38) connects to two branches. One branch connects to channel 7 (43) in sequence through channels 31 (39), 29 (40), 13 (41), and 14 (42) set in the valve body (1). Channel 7 (43) is located on the upper side of diaphragm assembly 2 (47). Diaphragm assembly 2 (47) can control the connection and disconnection of channels 8 (45) and 9 (46). The opening and closing of diaphragm assembly 2 (47) is controlled by the pressure in channel 7 (43). The second branch of channel 12 (38) is connected to channel 17 (49) through channel 31 (39), and also includes channel 17 (49) and channel 16 (50) which are controlled by solenoid valve A5 (12); The third channel 2 (26) is connected to channel 6 (48). The A3 solenoid valve (10) is a normally closed valve. The A4 solenoid valve (11) controls the connection and disconnection of channel 6 (48) and channel 4 (52). Channel 4 (52) is connected to the exhaust port (64). When the air pressure in channel 6 (48) decreases, the air pressure in channel 2 (26) will push the piston (15) to move upward and open the exhaust valve port (29) of the valve assembly (27), thereby reducing the air pressure in channel 2 (26).

4. The EBS rear axle control module assembly according to claim 3, characterized in that: The valve body (1) is provided with channel sixteen (50) and channel seventeen (49). The A4 solenoid valve (11) is used to control the connection and disconnection of channel sixteen (50) and channel seventeen (49), and at the same time control the connection and disconnection of channel sixteen (50) and channel twenty (60). When the A4 solenoid valve (11) is energized, channel eleven (35) and channel twelve (38) are disconnected and the air pressure at outlet one (5) remains unchanged.

5. The EBS rear axle control module assembly according to claim 4, characterized in that: A5 solenoid valve (12) is used to control the connection or disconnection of channel thirteen (41) and channel fourteen (42), and at the same time control the connection or disconnection of channel fourteen (42) and channel fifteen (57). Channel fifteen (57) is connected to channel twenty-eight (53), channel twenty-eight (53) is connected to exhaust port (64), and channel seven (43) is connected to exhaust port (64). Diaphragm assembly four (54) controls the connection or disconnection of channel eight (45) and channel nine (46).

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