CN110077379B - Four-wheel drive electric vehicle braking energy recovery gas circuit based on stacked one-way valve and one-way valve - Google Patents
Four-wheel drive electric vehicle braking energy recovery gas circuit based on stacked one-way valve and one-way valve Download PDFInfo
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- CN110077379B CN110077379B CN201910429118.9A CN201910429118A CN110077379B CN 110077379 B CN110077379 B CN 110077379B CN 201910429118 A CN201910429118 A CN 201910429118A CN 110077379 B CN110077379 B CN 110077379B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
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Abstract
The invention provides a four-wheel drive electric vehicle braking energy recovery gas circuit based on a stacked one-way valve and a one-way valve, belonging to the technical field of electric vehicle braking energy recovery, the proposal adds an auxiliary gas storage tank, a switch electromagnetic valve, a three-way valve, a superposed one-way valve and a one-way valve in the braking gas circuit of the existing decoupling type braking energy recovery system based on the air pressure ABS electromagnetic valve, so that the air pressure braking gas circuit of the driving wheel has a double-loop structure, when the braking energy is recovered, one air source with high air pressure can be selected to provide high-pressure air for a left front driving wheel brake chamber, a left rear driving wheel brake chamber, a right front driving wheel brake chamber and a right rear driving wheel brake chamber, therefore, the key problems that the response speed of the coupling braking force of the driving wheels is low and the coupling braking force lags behind the required braking force caused by low air source pressure in the continuous braking in the existing scheme are effectively solved.
Description
Technical Field
The invention belongs to the technical field of electric vehicle braking energy recovery, and particularly relates to a four-wheel drive electric vehicle braking energy recovery gas circuit based on a stacked one-way valve and a one-way valve.
Background
Along with the increasing serious problems of environmental pollution and energy safety, the electric vehicle is more and more emphasized by people, a braking energy recovery system is one of the key means for energy conservation of the electric vehicle, and can recover and utilize energy originally consumed in friction braking through a motor, for example, as described in the research on an EMB-based decoupled braking energy recovery system (Yangkun, Gaussong, Wangjie, and the like), the research on the EMB-based decoupled braking energy recovery system [ J ] in automobile engineering, 2016,38(8):1072 + 1079 ], and the energy of the part can account for about 30% of energy required by driving the whole vehicle.
At present, the braking energy recovery system can be divided into a coupling type and a decoupling type according to the working principle, although the arrangement of the original vehicle braking system is not changed, the coupling type braking energy recovery system has the defects of poor braking feeling and low braking energy recovery rate, and the application is gradually reduced at present.
The decoupling type braking energy recovery system can accurately meet the braking requirement of a driver through the coupling of mechanical braking force and motor braking force, and has the advantages of good braking feeling and high braking energy recovery rate. When the braking force of the motor can completely meet the braking requirement of a driver, the braking force is completely provided by the motor brake, and when the braking force of the motor cannot completely meet the braking requirement of the driver, the braking force of the whole vehicle is provided by the motor brake and the mechanical brake together, so that whether the combined force of the motor braking force and the mechanical braking force can accurately track the braking force required by the driver becomes the key for influencing the decoupling type braking energy recovery effect.
For an electric commercial vehicle, because the whole vehicle has a heavy weight, the influence of a braking energy recovery effect on the economy of the whole vehicle is very important, and meanwhile, from the perspective of reducing the system cost, the development cost and the system transformation workload, at present, the scheme of a decoupling type braking energy recovery system for the electric commercial vehicle which is researched more is a decoupling type braking energy recovery system based on an air pressure ABS electromagnetic valve, which is mentioned in the document URBS air pressure ABS electromagnetic valve failure analysis and improvement of a new energy passenger vehicle (Yangkun, Ma super, Guo Chi, and the like. the URBS air pressure ABS electromagnetic valve failure analysis and improvement [ J ]. Guangxi university report (natural science version), 2017,42(5): 1647-; this solution has the advantages of low cost and easy implementation, but the following problems are found in the research: the adjusting speed of the pressure of the brake air chamber depends on the difference value of the air pressure of the air storage tank and the air pressure of the brake air chamber, when the continuous braking times are more than two times in the driving process, the pressure in the air storage tank can be obviously reduced, and the more the continuous braking times are, the greater the pressure reduction is, the more the adjusting speed of the pressure of the brake air chamber can be obviously reduced, so that the coupling braking force applied to the whole vehicle by the braking energy recovery system can lag behind the required braking force, thereby bringing the serious problems of different braking feeling from the conventional braking system, possibly causing the lengthening of the braking distance and the like; in addition, for the four-wheel drive electric commercial vehicle, the front wheel and the rear wheel can recover the braking energy, which provides a foundation for further improving the recovery rate of the braking energy, so that the development of the braking gas circuit meeting the decoupling type braking energy recovery requirement of the four-wheel drive electric commercial vehicle has important significance.
Disclosure of Invention
Aiming at the problems, the invention provides a four-wheel drive electric vehicle braking energy recovery air circuit based on a superposed one-way valve and a one-way valve on the basis of the existing decoupling type braking energy recovery air circuit based on a pneumatic ABS (anti-lock brake system) electromagnetic valve, and the scheme is that an auxiliary air storage tank (3), a rear drive shaft switch electromagnetic valve (5), a first three-way valve (7), a right rear drive wheel superposed one-way valve (8), a second three-way valve (13), a right rear drive wheel one-way valve (14), a third three-way valve (15), a fourth three-way valve (16), a left rear drive wheel one-way valve (17), a fifth three-way valve (22), a left rear drive wheel superposed one-way valve (23), a sixth three-way valve (24), a rear drive shaft relay valve (25), a front drive shaft relay valve (26), a seventh three-way valve (27), a left front drive wheel superposed one-way valve (28) are additionally arranged in the driving wheel braking energy recovery air circuit, The brake system comprises an eighth three-way valve (29), a left front driving wheel one-way valve (34), a ninth three-way valve (35), a thirteenth three-way valve (36), a right front driving wheel one-way valve (37), an eleventh three-way valve (39), a right front driving wheel stacked one-way valve (40), a twelfth three-way valve (44), a front driving shaft switch electromagnetic valve (45) and the like, so that each driving wheel brake circuit has two independent high-pressure air sources and a double-circuit structure, and when the brake energy recovery is triggered, an air source with higher air pressure can be selected to provide an air source for a brake air chamber, and the problem of reduction of the adjustment speed of the wheel air pressure brake force caused by lower air source pressure during continuous braking is effectively solved.
A four-wheel drive electric vehicle braking energy recovery air route brake pedal (1), a brake valve (2), an auxiliary air storage tank (3), a main air storage tank (4), a rear drive shaft switch electromagnetic valve (5), an air compressor (6), a first three-way valve (7), a right rear drive wheel stacked one-way valve (8), a right rear drive wheel brake air chamber (11), a right rear drive wheel ABS electromagnetic valve (12), a second three-way valve (13), a right rear drive wheel one-way valve (14), a third three-way valve (15), a fourth three-way valve (16), a left rear drive wheel one-way valve (17), a left rear drive wheel ABS electromagnetic valve (18), a left rear drive wheel brake air chamber (21), a fifth three-way valve (22), a left rear drive wheel stacked one-way valve (23), a sixth three-way valve (24), a rear drive shaft relay valve (25), a stacked one-way valve (3), a brake valve (2), a secondary air storage tank (3), a main air storage tank (4), a rear drive shaft switch electromagnetic valve (5), a third three-way valve (15), a fourth three-way valve (16), a third three-way valve, a fourth three-way valve (24), a fourth three-way valve, a fourth drive wheel brake air storage tank (24), a fourth drive wheel brake air storage tank, a fourth drive wheel brake air tank, a fourth drive wheel brake tank, a fourth drive wheel brake tank, a fourth drive wheel brake air tank, a fourth drive wheel brake tank, a fourth drive wheel, the brake system comprises a front drive shaft relay valve (26), a seventh three-way valve (27), a left front drive wheel superposed one-way valve (28), an eighth three-way valve (29), a left front drive wheel brake air chamber (32), a left front drive wheel ABS solenoid valve (33), a left front drive wheel one-way valve (34), a ninth three-way valve (35), a thirteenth three-way valve (36), a right front drive wheel one-way valve (37), a right front drive wheel ABS solenoid valve (38), an eleventh three-way valve (39), a right front drive wheel superposed one-way valve (40), a right front drive wheel brake air chamber (43), a twelfth three-way valve (44) and a front drive shaft switch solenoid valve (45).
An air outlet port b of the air compressor (6) is connected with an air inlet port a of the main air storage tank (4) through an air path, and an air outlet port a of the air compressor (6) is connected with an air inlet port a of the auxiliary air storage tank (3) through an air path.
An air inlet port a of the brake valve (2) is connected with an air outlet port d of the main air storage tank (4) through an air path, an air inlet port b of the brake valve (2) is connected with an air outlet port c of the main air storage tank (4) through an air path, an air outlet port c of the brake valve (2) is connected with a control port c of the front drive shaft relay valve (26) through an air path, and an air outlet port d of the brake valve (2) is connected with a control port c of the rear drive shaft relay valve (25) through an air path.
And a port a of the rear drive shaft relay valve (25) is connected with an air outlet port e of the main air storage tank (4) through an air passage, and a port b of the rear drive shaft relay valve (25) is connected with a port b of the sixth three-way valve (24) through an air passage.
The port a of the sixth three-way valve (24) is connected with the port c of the third three-way valve (15) through an air passage, the port a of the third three-way valve (15) is connected with the air inlet port a of the right rear drive wheel superposition type one-way valve (8) through an air passage, the port b of the third three-way valve (15) is connected with the air outlet port b of the right rear drive wheel one-way valve (14) through an air passage, the air outlet port c of the right rear drive wheel superposition type one-way valve (8) is connected with the port a of the second three-way valve (13) through an air passage, the air inlet port a of the right rear drive wheel one-way valve (14) is connected with the port c of the second three-way valve (13) through an air passage, the port b of the second three-way valve (13) is connected with the air inlet port a of the right rear drive wheel ABS solenoid valve (12) through an air passage, and the air inlet port b of the right rear drive wheel ABS solenoid valve (12) is connected with the right rear drive wheel brake air chamber (11) through an air passage.
The port c of the sixth three-way valve (24) is connected with the port c of the fourth three-way valve (16) through an air path, the port a of the fourth three-way valve (16) is connected with the air inlet port a of the left rear drive wheel superposition type one-way valve (23) through an air path, the port b of the fourth three-way valve (16) is connected with the air outlet port b of the left rear drive wheel one-way valve (17) through an air path, the air outlet port c of the left rear drive wheel superposition type one-way valve (23) is connected with the port a of the fifth three-way valve (22) through an air path, the air inlet port a of the left rear drive wheel one-way valve (17) is connected with the port c of the fifth three-way valve (22) through an air path, the port b of the fifth three-way valve (22) is connected with the air inlet port a of the left rear drive wheel ABS solenoid valve (18) through an air path, and the air inlet port b of the left rear drive wheel ABS solenoid valve (18) is connected with the left rear drive wheel brake air chamber (21) through an air path.
An air outlet port b of the auxiliary air storage tank (3) is connected with an air inlet port a of the rear drive shaft switching electromagnetic valve (5) through an air passage, an air outlet port b of the rear drive shaft switching electromagnetic valve (5) is connected with an air inlet port a of the first three-way valve (7) through an air passage, an air outlet port b of the first three-way valve (7) is connected with an air inlet port b of the right rear drive wheel superposition type one-way valve (8) through an air passage, and an air outlet port c of the first three-way valve (7) is connected with an air inlet port b of the left rear drive wheel superposition type one-way valve (23) through an air passage.
And a port a of the front drive shaft relay valve (26) is connected with an air outlet port b of the main air storage tank (4) through an air passage, and a port b of the front drive shaft relay valve (26) is connected with a port b of a ninth three-way valve (35) through an air passage.
The port a of the ninth three-way valve (35) is connected with the port c of the thirteenth through an air passage, the port a of the thirteenth through valve (36) is connected with the air inlet port a of the right front driving wheel superposition type one-way valve (40) through an air passage, the port b of the thirteenth through valve (36) is connected with the air outlet port b of the right front driving wheel one-way valve (37) through an air passage, the air outlet port c of the right front driving wheel superposition type one-way valve (40) is connected with the port a of the eleventh through an air passage, the air inlet port a of the right front driving wheel one-way valve (37) is connected with the port c of the eleventh through an air passage, the port b of the eleventh through valve (39) is connected with the air inlet port a of the right front driving wheel ABS solenoid valve (38), and the air inlet port b of the right front driving wheel ABS solenoid valve (38) is connected with the right front driving wheel brake air chamber (43) through an air passage.
The port c of the ninth three-way valve (35) is connected with the port c of the seventh three-way valve (27) through an air path, the port a of the seventh three-way valve (27) is connected with the air inlet port a of the left front drive wheel superposed one-way valve (28) through an air path, the port b of the seventh three-way valve (27) is connected with the air outlet port b of the left front drive wheel one-way valve (34) through an air path, the air outlet port c of the left front drive wheel superposed one-way valve (28) is connected with the port a of the eighth three-way valve (29) through an air path, the air inlet port a of the left front drive wheel one-way valve (34) is connected with the port c of the eighth three-way valve (29) through an air path, the port b of the eighth three-way valve (29) is connected with the air inlet port a of the left front drive wheel ABS solenoid valve (33) through an air path, and the air inlet port b of the left front drive wheel ABS solenoid valve (33) is connected with the left front drive wheel brake air chamber (32) through an air path.
An air outlet port c of the auxiliary air storage tank (3) is connected with an air inlet port a of the front drive shaft switch electromagnetic valve (45) through an air passage, an air outlet port b of the front drive shaft switch electromagnetic valve (45) is connected with an air inlet port a of the twelfth three-way valve (44) through an air passage, an air outlet port b of the twelfth three-way valve (44) is connected with an air inlet port b of the right front drive wheel superposition type one-way valve (40) through an air passage, and an air outlet port c of the twelfth three-way valve (44) is connected with an air inlet port b of the left front drive wheel superposition type one-way valve (28) through an air passage.
Compared with the prior art, the invention adds the auxiliary air storage tank (3), the rear driving wheel switch electromagnetic valve (5), the first three-way valve (7), the right rear driving wheel stacked one-way valve (8), the second three-way valve (13), the right rear driving wheel one-way valve (14), the third three-way valve (15), the fourth three-way valve (16), the left rear driving wheel one-way valve (17), the fifth three-way valve (22), the left rear driving wheel stacked one-way valve (23), the sixth three-way valve (24), the rear driving shaft relay valve (25), the front driving shaft relay valve (26), the seventh three-way valve (27), the left front driving wheel stacked one-way valve (28), the eighth three-way valve (29), the left front driving wheel one-way valve (34), the ninth three-way valve (35), the thirteenth three-way valve (36), the right front driving wheel one-way valve (37) in the driving wheel braking air path, The system comprises an eleventh through valve (39), a right front driving wheel superposition type one-way valve (40), a twelfth through valve (44), a front driving shaft switch electromagnetic valve (45) and the like, so that each driving wheel brake circuit has two independent high-pressure air sources and a double-circuit structure, and when the braking energy recovery is triggered, the air source with higher air pressure in the two high-pressure air sources can provide high-pressure air for a driving wheel brake chamber, thereby effectively solving the key problems that the coupling braking force response speed of the driving wheel is low and the coupling braking force lags behind the required braking force caused by low air source pressure in the continuous braking in the existing scheme.
FIG. 1 is a schematic structural diagram of a four-wheel drive electric vehicle braking energy recovery air circuit based on a stacked one-way valve and a one-way valve. Wherein: 1. a brake pedal; 2. a brake valve; 3. a secondary gas storage tank; 4. a primary gas storage tank; 5. the rear driving shaft switches the electromagnetic valve; 6. an air compressor; 7. a first three-way valve; 8. a right rear drive wheel superposition type one-way valve; 9. a right rear drive wheel brake; 10. a right rear drive wheel; 11. a right rear drive wheel brake chamber; 12. the ABS electromagnetic valve of the right rear driving wheel; 13. a second three-way valve; 14. a right rear drive wheel check valve; 15. a third three-way valve; 16. a fourth three-way valve; 17. left rear drive wheel check valves; 18. the left rear driving wheel ABS electromagnetic valve; 19. a left rear drive wheel brake; 20. a left rear drive wheel; 21. a left rear drive wheel brake chamber; 22. a fifth three-way valve; 23. a left rear driving wheel superposed one-way valve;
24. a sixth three-way valve; 25. a rear drive shaft relay valve; 26. a front drive shaft relay valve; 27. a seventh three-way valve; 28. a left front driving wheel superposition type one-way valve; 29. an eighth three-way valve; 30. a left front drive wheel; 31. a left front drive wheel brake;
32. a brake chamber of a left front driving wheel; 33. the left front driving wheel ABS electromagnetic valve; 34. a left front drive wheel check valve;
35. a ninth three-way valve; 36. a thirteenth way valve; 37. a right front drive wheel check valve; 38. an ABS electromagnetic valve of a right front driving wheel; 39. an eleventh three-way valve; 40. a right front driving wheel superposition type one-way valve; 41. a right front drive wheel brake; 42. a right front drive wheel; 43. a right front drive wheel brake chamber; 44. a twelfth three-way valve; 45. the front drive shaft switches the electromagnetic valve.
The embodiments of the present invention are as follows.
The invention provides a four-wheel drive electric vehicle braking energy recovery gas circuit based on a superposition type one-way valve and a one-way valve, and in order to make the technical scheme and the effect of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and taking examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in figure 1, a four-wheel drive electric vehicle brake energy recovery air route based on a superposition type one-way valve and a one-way valve comprises a brake pedal (1), a brake valve (2), an auxiliary air storage tank (3), a main air storage tank (4), a rear drive shaft switch electromagnetic valve (5), an air compressor (6), a first three-way valve (7), a right rear drive wheel superposition type one-way valve (8), a right rear drive wheel brake air chamber (11), a right rear drive wheel ABS electromagnetic valve (12), a second three-way valve (13), a right rear drive wheel one-way valve (14), a third three-way valve (15), a fourth three-way valve (16), a left rear drive wheel one-way valve (17), a left rear drive wheel ABS electromagnetic valve (18), a left rear drive wheel brake air chamber (21), a fifth three-way valve (22), a left rear drive wheel superposition type one-way valve (23), a sixth three-way valve (24), a rear drive shaft relay valve (25), The brake system comprises a front drive shaft relay valve (26), a seventh three-way valve (27), a left front drive wheel superposed one-way valve (28), an eighth three-way valve (29), a left front drive wheel brake air chamber (32), a left front drive wheel ABS solenoid valve (33), a left front drive wheel one-way valve (34), a ninth three-way valve (35), a thirteenth three-way valve (36), a right front drive wheel one-way valve (37), a right front drive wheel ABS solenoid valve (38), an eleventh three-way valve (39), a right front drive wheel superposed one-way valve (40), a right front drive wheel brake air chamber (43), a twelfth three-way valve (44) and a front drive shaft switch solenoid valve (45).
An air outlet port b of the air compressor (6) is connected with an air inlet port a of the main air storage tank (4) through an air path, and an air outlet port a of the air compressor (6) is connected with an air inlet port a of the auxiliary air storage tank (3) through an air path.
An air inlet port a of the brake valve (2) is connected with an air outlet port d of the main air storage tank (4) through an air path, an air inlet port b of the brake valve (2) is connected with an air outlet port c of the main air storage tank (4) through an air path, an air outlet port c of the brake valve (2) is connected with a control port c of the front drive shaft relay valve (26) through an air path, and an air outlet port d of the brake valve (2) is connected with a control port c of the rear drive shaft relay valve (25) through an air path.
And a port a of the rear drive shaft relay valve (25) is connected with an air outlet port e of the main air storage tank (4) through an air passage, and a port b of the rear drive shaft relay valve (25) is connected with a port b of the sixth three-way valve (24) through an air passage.
The port a of the sixth three-way valve (24) is connected with the port c of the third three-way valve (15) through an air passage, the port a of the third three-way valve (15) is connected with the air inlet port a of the right rear drive wheel superposition type one-way valve (8) through an air passage, the port b of the third three-way valve (15) is connected with the air outlet port b of the right rear drive wheel one-way valve (14) through an air passage, the air outlet port c of the right rear drive wheel superposition type one-way valve (8) is connected with the port a of the second three-way valve (13) through an air passage, the air inlet port a of the right rear drive wheel one-way valve (14) is connected with the port c of the second three-way valve (13) through an air passage, the port b of the second three-way valve (13) is connected with the air inlet port a of the right rear drive wheel ABS solenoid valve (12) through an air passage, and the air inlet port b of the right rear drive wheel ABS solenoid valve (12) is connected with the right rear drive wheel brake air chamber (11) through an air passage.
The port c of the sixth three-way valve (24) is connected with the port c of the fourth three-way valve (16) through an air path, the port a of the fourth three-way valve (16) is connected with the air inlet port a of the left rear drive wheel superposition type one-way valve (23) through an air path, the port b of the fourth three-way valve (16) is connected with the air outlet port b of the left rear drive wheel one-way valve (17) through an air path, the air outlet port c of the left rear drive wheel superposition type one-way valve (23) is connected with the port a of the fifth three-way valve (22) through an air path, the air inlet port a of the left rear drive wheel one-way valve (17) is connected with the port c of the fifth three-way valve (22) through an air path, the port b of the fifth three-way valve (22) is connected with the air inlet port a of the left rear drive wheel ABS solenoid valve (18) through an air path, and the air inlet port b of the left rear drive wheel ABS solenoid valve (18) is connected with the left rear drive wheel brake air chamber (21) through an air path.
An air outlet port b of the auxiliary air storage tank (3) is connected with an air inlet port a of the rear drive shaft switching electromagnetic valve (5) through an air passage, an air outlet port b of the rear drive shaft switching electromagnetic valve (5) is connected with an air inlet port a of the first three-way valve (7) through an air passage, an air outlet port b of the first three-way valve (7) is connected with an air inlet port b of the right rear drive wheel superposition type one-way valve (8) through an air passage, and an air outlet port c of the first three-way valve (7) is connected with an air inlet port b of the left rear drive wheel superposition type one-way valve (23) through an air passage;
and a port a of the front drive shaft relay valve (26) is connected with an air outlet port b of the main air storage tank (4) through an air passage, and a port b of the front drive shaft relay valve (26) is connected with a port b of a ninth three-way valve (35) through an air passage.
The port a of the ninth three-way valve (35) is connected with the port c of the thirteenth through an air passage, the port a of the thirteenth through valve (36) is connected with the air inlet port a of the right front driving wheel superposition type one-way valve (40) through an air passage, the port b of the thirteenth through valve (36) is connected with the air outlet port b of the right front driving wheel one-way valve (37) through an air passage, the air outlet port c of the right front driving wheel superposition type one-way valve (40) is connected with the port a of the eleventh through an air passage, the air inlet port a of the right front driving wheel one-way valve (37) is connected with the port c of the eleventh through an air passage, the port b of the eleventh through valve (39) is connected with the air inlet port a of the right front driving wheel ABS solenoid valve (38), and the air inlet port b of the right front driving wheel ABS solenoid valve (38) is connected with the right front driving wheel brake air chamber (43) through an air passage.
The port c of the ninth three-way valve (35) is connected with the port c of the seventh three-way valve (27) through an air path, the port a of the seventh three-way valve (27) is connected with the air inlet port a of the left front drive wheel superposed one-way valve (28) through an air path, the port b of the seventh three-way valve (27) is connected with the air outlet port b of the left front drive wheel one-way valve (34) through an air path, the air outlet port c of the left front drive wheel superposed one-way valve (28) is connected with the port a of the eighth three-way valve (29) through an air path, the air inlet port a of the left front drive wheel one-way valve (34) is connected with the port c of the eighth three-way valve (29) through an air path, the port b of the eighth three-way valve (29) is connected with the air inlet port a of the left front drive wheel ABS solenoid valve (33) through an air path, and the air inlet port b of the left front drive wheel ABS solenoid valve (33) is connected with the left front drive wheel brake air chamber (32) through an air path.
An air outlet port c of the auxiliary air storage tank (3) is connected with an air inlet port a of the front drive shaft switch electromagnetic valve (45) through an air passage, an air outlet port b of the front drive shaft switch electromagnetic valve (45) is connected with an air inlet port a of the twelfth three-way valve (44) through an air passage, an air outlet port b of the twelfth three-way valve (44) is connected with an air inlet port b of the right front drive wheel superposition type one-way valve (40) through an air passage, and an air outlet port c of the twelfth three-way valve (44) is connected with an air inlet port b of the left front drive wheel superposition type one-way valve (28) through an air passage.
During braking, the working principle of the air circuit is as follows.
In the running process of the automobile, the air compressor (6) works to generate compressed air, and the compressed air is input into the main air storage tank (4) and the auxiliary air storage tank (3).
The principle of operation of applying pneumatic braking to the right rear drive wheel (10) is as follows.
A brake air supply air path of the right rear driving wheel (10) is divided into a main air supply air path and an auxiliary air supply air path.
The working principle of the main air supply air path of the right rear driving wheel (10) is as follows: the main air supply air path of the right rear driving wheel (10) comprises a main air storage tank (4), a right rear driving wheel superposed one-way valve (8), a right rear driving wheel brake air chamber (11), a right rear driving wheel ABS electromagnetic valve (12), a second three-way valve (13), a third three-way valve (15), a sixth three-way valve (24) and a rear driving shaft relay valve (25); when a driver steps on a brake pedal (1), high-pressure gas in a main gas storage tank (4) enters a control port c of a rear drive shaft relay valve (25) through a port d of the main gas storage tank (4) and ports a and d of a brake valve (2) to enable the port a and the port b of the rear drive shaft relay valve (25) to be communicated, the high-pressure gas in the main gas storage tank (4) sequentially passes through a port e of the main gas storage tank (4), ports a and b of the rear drive shaft relay valve (25), ports b and a of a sixth three-way valve (24), ports c and a of a third three-way valve (15), ports a and c of a right rear drive wheel superposition type one-way valve (8), ports a and b of a second three-way valve (13), and ports a and b of a right rear drive wheel ABS solenoid valve (12) to enter a right rear drive wheel brake chamber (11), so that a pneumatic braking force can be applied to the right rear drive wheel (10) by the right rear drive wheel brake (9).
The working principle of the auxiliary air supply air path of the right rear driving wheel (10) is as follows: the auxiliary air supply air path of the right rear driving wheel (10) comprises an auxiliary air storage tank (3), a rear driving shaft switch electromagnetic valve (5), a first three-way valve (7), a right rear driving wheel stacked one-way valve (8), a right rear driving wheel brake air chamber (11), a right rear driving wheel ABS electromagnetic valve (12) and a second three-way valve (13); when a driver steps on the brake pedal (1) and triggers a braking energy recovery function, the rear drive shaft switch electromagnetic valve (5) is conducted, high-pressure gas in the auxiliary gas storage tank (3) sequentially passes through the port b of the auxiliary gas storage tank (3), the port a and the port b of the rear drive shaft switch electromagnetic valve (5), the port a and the port b of the first three-way valve (7), the port b and the port c of the right rear drive wheel superposition type one-way valve (8), the port a and the port b of the second three-way valve (13), and the port a and the port b of the right rear drive wheel ABS electromagnetic valve (12) and enters the right rear drive wheel braking gas chamber (11), and accordingly air pressure braking force can be applied to the right rear drive wheel (10) through the right rear drive wheel brake (9).
When the brake pedal (1) is stepped on but the braking energy recovery function is not triggered, the rear driving shaft switch electromagnetic valve (5) cuts off the air path connection between the port b of the auxiliary air storage tank (3) and the port a of the first three-way valve (7), and high-pressure air required by the rear right driving wheel brake air chamber (11) is provided by the main air supply air path.
When the electronic brake pedal (1) is stepped on and the braking energy recovery function is triggered, the conditions of applying air pressure braking pressure to the right rear driving wheel (10) are divided into two types: when the gas pressure of the main gas storage tank (4) is greater than that of the auxiliary gas storage tank (3), high-pressure gas is provided for a brake chamber (11) of the right rear driving wheel by a main gas supply gas circuit; when the gas pressure of the main gas storage tank (4) is smaller than that of the auxiliary gas storage tank (3), the auxiliary gas supply circuit provides high-pressure gas for the brake chamber (11) of the rear right driving wheel.
The operating principle of the pneumatic brake release for the right rear drive wheel (10) is as follows: the brake exhaust gas circuit of the right rear driving wheel (10) comprises a right rear driving wheel ABS electromagnetic valve (12), a second three-way valve (13), a right rear driving wheel one-way valve (14), a third three-way valve (15), a sixth three-way valve (24) and a rear driving shaft relay valve (25); when a driver releases a brake pedal (1), a brake valve (2) is closed, a rear drive shaft relay valve (25) disconnects an air path between a port e of a main air storage tank (4) and a port b of a sixth three-way valve (24), a rear drive shaft switch electromagnetic valve (5) disconnects an air path between a port b of an auxiliary air storage tank (3) and a port a of a first three-way valve (7), high-pressure air in a brake air chamber (11) of a right rear drive wheel sequentially passes through a port b and a port a of an ABS electromagnetic valve (12) of the right rear drive wheel, a port b and a port c of a second three-way valve (13) and a port a and a port b of a one-way valve (14) of the right rear drive wheel, the port b and the port c of the third three-way valve (15) and the port a and the port b of the sixth three-way valve (24) enter the rear drive shaft relay valve (25) and are exhausted to the atmosphere through the rear drive shaft relay valve (25), and therefore the pneumatic braking force of the right rear drive wheel (10) is released.
The principle of operation of applying pneumatic brakes to the left rear drive wheel (20) is as follows.
The brake air supply air path of the left rear driving wheel (20) is divided into a main air supply air path and an auxiliary air supply air path.
The working principle of the main air supply air path of the left rear driving wheel (20) is as follows: the main air supply air path of the left rear driving wheel (20) comprises a main air storage tank (4), a fourth three-way valve (16), a left rear driving wheel ABS electromagnetic valve (18), a left rear driving wheel brake air chamber (21), a fifth three-way valve (22), a left rear driving wheel stacked one-way valve (23), a sixth three-way valve (24) and a rear driving shaft relay valve (25); when a driver steps on a brake pedal (1), high-pressure gas in a main gas storage tank (4) enters a control port c of a rear drive shaft relay valve (25) through a port d of the main gas storage tank (4) and ports a and d of a brake valve (2) to enable the port a and the port b of the rear drive shaft relay valve (25) to be communicated, the high-pressure gas in the main gas storage tank (4) sequentially passes through a port e of the main gas storage tank (4), ports a and b of the rear drive shaft relay valve (25), ports b and c of a sixth three-way valve (24), ports c and a of a fourth three-way valve (16), ports a and c of a left rear drive wheel superposition type one-way valve (23), ports a and b of a fifth three-way valve (22), and ports a and b of a left rear drive wheel ABS solenoid valve (18) to enter a left rear drive wheel brake chamber (21), so that pneumatic braking force can be applied to the left rear drive wheel (20) by the left rear drive wheel brake (19).
The working principle of the auxiliary air supply path of the left rear driving wheel (20) is as follows: the auxiliary air supply air path of the left rear driving wheel (20) comprises an auxiliary air storage tank (3), a rear driving shaft switch electromagnetic valve (5), a first three-way valve (7), a left rear driving wheel ABS electromagnetic valve (18), a left rear driving wheel brake air chamber (21), a fifth three-way valve (22) and a left rear driving wheel superposed one-way valve (23); when a driver steps on the brake pedal (1) and triggers a braking energy recovery function, the rear drive shaft switch electromagnetic valve (5) is conducted, high-pressure gas in the auxiliary gas storage tank (3) sequentially passes through the port b of the auxiliary gas storage tank (3), the port a and the port b of the rear drive shaft switch electromagnetic valve (5), the port a and the port c of the first three-way valve (7), the port b and the port c of the left rear drive wheel superposed type one-way valve (23), the port a and the port b of the fifth three-way valve (22) and the port a and the port b of the left rear drive wheel ABS electromagnetic valve (18) and enters the left rear drive wheel brake chamber (21), and therefore air pressure braking force can be applied to the left rear drive wheel (20) through the left rear drive wheel brake (19).
When the brake pedal (1) is stepped on but the braking energy recovery function is not triggered, the rear driving shaft switch electromagnetic valve (5) cuts off the air path connection between the port b of the auxiliary air storage tank (3) and the port a of the first three-way valve (7), and high-pressure air required by the brake air chamber (21) of the left rear driving wheel is provided by the main air supply air path.
When the electronic brake pedal (1) is stepped on and the braking energy recovery function is triggered, the conditions of applying air pressure braking pressure to the left rear driving wheel (20) are divided into two types: when the gas pressure of the main gas storage tank (4) is greater than that of the auxiliary gas storage tank (3), high-pressure gas is provided for a brake chamber (21) of the left rear driving wheel by the main gas supply path; when the gas pressure of the main gas storage tank (4) is smaller than that of the auxiliary gas storage tank (3), the auxiliary gas supply circuit provides high-pressure gas for the brake chamber (21) of the left rear driving wheel.
The operating principle for releasing the pneumatic brake to the left rear drive wheel (20) is as follows: the brake exhaust air path of the left rear driving wheel (20) comprises a left rear driving wheel ABS electromagnetic valve (18), a fifth three-way valve (22), a left rear driving wheel one-way valve (17), a fourth three-way valve (16), a sixth three-way valve (24) and a rear driving shaft relay valve (25); when a driver releases a brake pedal (1), a brake valve (2) is closed, a rear drive shaft relay valve (25) disconnects an air path between a port e of a main air storage tank (4) and a port b of a sixth three-way valve (24), an on-off electromagnetic valve (5) disconnects an air path between a port b of an auxiliary air storage tank (3) and a port a of a first three-way valve (7), high-pressure air in a brake air chamber (21) of a rear left drive wheel sequentially passes through a port b and a port a of an ABS electromagnetic valve (18) of the rear left drive wheel, a port b and a port c of a fifth three-way valve (22) and a port a and a port b of a one-way valve (17) of the rear left drive wheel, the port b and the port c of the fourth three-way valve (16) and the port c and the port b of the sixth three-way valve (24) enter the rear drive shaft relay valve (25) and are exhausted to the atmosphere through the rear drive shaft relay valve (25), and therefore the air pressure braking force of the left rear drive wheel (20) is released.
The principle of operation of applying pneumatic brakes to the front left drive wheel (30) is as follows.
The brake air supply air path of the left front driving wheel (30) is divided into a main air supply air path and an auxiliary air supply air path.
The working principle of the main air supply path of the left front driving wheel (30) is as follows: the main air supply air path of the left front driving wheel (30) comprises a main air storage tank (4), a seventh three-way valve (27), a left front driving wheel ABS electromagnetic valve (33), a left front driving wheel brake air chamber (32), an eighth three-way valve (29), a left front driving wheel superposition type one-way valve (28), a ninth three-way valve (35) and a front driving shaft relay valve (26); when a driver steps on a brake pedal (1), high-pressure gas in a main gas storage tank (4) enters a control port c of a front drive shaft relay valve (26) through a port c of the main gas storage tank (4) and a port b and a port c of a brake valve (2) to enable a port a and a port b of the front drive shaft relay valve (26) to be communicated, the high-pressure gas in the main gas storage tank (4) sequentially passes through a port b of the main gas storage tank (4), a port a and a port b of the front drive shaft relay valve (26), a port b and a port c of a ninth three-way valve (35), a port c and a port a of a seventh three-way valve (27), a port a and a port c of a left front drive wheel superposition type one-way valve (28), a port a and a port b of an eighth three-way valve (29), and a port a and a port b of a left front drive wheel ABS solenoid valve (33) to enter a brake chamber (32) of a front drive wheel, so that a pneumatic braking force can be applied to the left front drive wheel (30) through the left front drive wheel brake (31).
The working principle of the auxiliary air supply path of the left front driving wheel (30) is as follows: the auxiliary air supply air path of the left front driving wheel (30) comprises an auxiliary air storage tank (3), a left front driving wheel superposed one-way valve (28), an eighth three-way valve (29), a left front driving wheel brake air chamber (32), a left front driving wheel ABS electromagnetic valve (33), a twelfth three-way valve (44) and a front driving shaft switch electromagnetic valve (45); when a driver steps on the brake pedal (1) and triggers a braking energy recovery function, the front drive shaft switch electromagnetic valve (45) is conducted, high-pressure gas in the auxiliary gas storage tank (3) sequentially passes through a port c of the auxiliary gas storage tank (3), a port a and a port b of the front drive shaft switch electromagnetic valve (45), a port a and a port c of the twelfth three-way valve (44), a port b and a port c of the left front drive vehicle wheel superposed type one-way valve (28), a port a and a port b of the eighth three-way valve (29), and a port a and a port b of the left front drive wheel ABS electromagnetic valve (33) and enters the left front drive vehicle wheel brake chamber (32), and therefore air pressure braking force can be applied to the left front drive wheel (30) through the left front drive vehicle wheel brake (31).
When the brake pedal (1) is stepped on but the braking energy recovery function is not triggered, the front drive shaft switch electromagnetic valve (45) cuts off the air path connection between the port c of the auxiliary air storage tank (3) and the port a of the twelfth three-way valve (44), and high-pressure air required by the brake air chamber (32) of the left front drive vehicle wheel is provided by the main air supply air path.
When the electronic brake pedal (1) is stepped on and the braking energy recovery function is triggered, the conditions of applying air pressure braking pressure to the left front driving wheel (30) are divided into two types: when the gas pressure of the main gas storage tank (4) is higher than that of the auxiliary gas storage tank (3), high-pressure gas is provided for a brake chamber (32) of the left front driving wheel by the main gas supply path; when the gas pressure of the main gas storage tank (4) is smaller than that of the auxiliary gas storage tank (3), the auxiliary gas supply circuit provides high-pressure gas for the brake chamber (32) of the left front driving wheel.
The operating principle for releasing the pneumatic brake to the left front drive wheel (30) is as follows: the brake exhaust air path of the left front driving wheel (30) comprises a front driving shaft relay valve (26), a seventh three-way valve (27), an eighth three-way valve (29), a left front driving wheel ABS electromagnetic valve (33), a left front driving wheel one-way valve (34) and a ninth three-way valve (35); when a driver releases a brake pedal (1), a brake valve (2) is closed, a front drive shaft relay valve (26) breaks the air path connection between a port b of a main air storage tank (4) and a port b of a ninth three-way valve (35), a front drive shaft switch electromagnetic valve (45) breaks the air path connection between a port c of an auxiliary air storage tank (3) and a port a of a twelfth three-way valve (44), high-pressure air in a brake air chamber (32) of a front left drive wheel enters the front drive shaft relay valve (26) through the port b and the port a of a front left drive wheel ABS electromagnetic valve (33), the port b and the port c of an eighth three-way valve (29), the port a and the port b of a front left drive wheel one-way valve (34), the port b and the port c of a seventh three-way valve (27) and the port c and the port b of the ninth three-way valve (35) in sequence, and is discharged into the atmosphere through the front drive shaft relay valve (26), thereby releasing the pneumatic braking force of the left front drive wheel (30).
The principle of operation of applying the pneumatic brake to the right front drive wheel (42) is as follows.
The brake air supply path of the right front driving wheel (42) is divided into a main air supply path and an auxiliary air supply path.
The working principle of the main air supply path of the right front driving wheel (42) is as follows: the main air supply air path of the right front driving wheel (42) comprises a main air storage tank (4), a thirteenth through valve (36), a right front driving wheel ABS electromagnetic valve (38), a right front driving wheel brake air chamber (43), an eleventh through valve (39), a right front driving wheel superposition type one-way valve (40), a ninth through valve (35) and a front driving shaft relay valve (26); when a driver steps on a brake pedal (1), high-pressure gas in a main gas storage tank (4) enters a control port c of a front drive shaft relay valve (26) through a port c of the main gas storage tank (4) and a port b and a port c of a brake valve (2) to enable a port a and a port b of the front drive shaft relay valve (26) to be communicated, the high-pressure gas in the main gas storage tank (4) sequentially passes through a port b of the main gas storage tank (4), a port a and a port b of the front drive shaft relay valve (26), a port b and a port a of a ninth three-way valve (35), a port c and a port a of a thirteenth three-way valve (36), a port a and a port c of a right front drive wheel superposition type one-way valve (40), a port a and a port b of an eleventh three-way valve (39), and a port a and a port b of a right front drive wheel ABS solenoid valve (38) to enter a right front drive wheel brake chamber (43), so that the air pressure braking force can be applied to the right front drive wheel (42) through the right front drive wheel brake (41).
The working principle of the auxiliary air supply path of the right front driving wheel (42) is as follows: the auxiliary air supply air path of the right front driving wheel (42) comprises an auxiliary air storage tank (3), an ABS electromagnetic valve (38) of the right front driving wheel, an eleventh three-way valve (39), a superposed one-way valve (40) of the right front driving wheel, a brake air chamber (43) of the right front driving wheel, a twelfth three-way valve (44) and a front driving shaft switch electromagnetic valve (45); when a driver steps on the brake pedal (1) and triggers a braking energy recovery function, the front drive shaft switch electromagnetic valve (45) is conducted, high-pressure gas in the auxiliary gas storage tank (3) sequentially passes through a port c of the auxiliary gas storage tank (3), a port a and a port b of the front drive shaft switch electromagnetic valve (45), a port a and a port b of a twelfth three-way valve (44), a port b and a port c of a right front drive wheel superposition type one-way valve (40), a port a and a port b of an eleventh three-way valve (39) and a port a and a port b of a right front drive wheel ABS electromagnetic valve (38) and enters a right front drive wheel braking air chamber (43), and therefore pneumatic braking force can be applied to the right front drive wheel (42) through the right front drive wheel brake (41).
When the brake pedal (1) is stepped on but the braking energy recovery function is not triggered, the front drive shaft switch electromagnetic valve (45) cuts off the air path connection between the port c of the auxiliary air storage tank (3) and the port a of the twelfth three-way valve (44), and high-pressure air required by the front right driving wheel brake air chamber (43) is provided by the main air supply air path.
When the electronic brake pedal (1) is stepped on and the braking energy recovery function is triggered, the conditions of applying the air pressure braking pressure to the right front driving wheel (42) are divided into two types: when the gas pressure of the main gas storage tank (4) is greater than that of the auxiliary gas storage tank (3), high-pressure gas is provided for a brake chamber (43) of the front right driving wheel by the main gas supply path; when the gas pressure of the main gas storage tank (4) is smaller than that of the auxiliary gas storage tank (3), high-pressure gas is provided for the brake chamber (43) of the front right driving wheel by the auxiliary gas supply path.
The operating principle for releasing the pneumatic brake for the right front driven wheel (42) is as follows: the brake exhaust air circuit of the right front driving wheel (42) comprises a front driving shaft relay valve (26), a thirteenth through valve (36), an eleventh three-way valve (39), a right front driving wheel ABS electromagnetic valve (38), a right front driving wheel one-way valve (37) and a ninth three-way valve (35); when a driver releases a brake pedal (1), a brake valve (2) is closed, a front drive shaft relay valve (26) breaks an air path connection between a port b of a main air storage tank (4) and a port b of a ninth three-way valve (35), a front drive shaft switch electromagnetic valve (45) breaks an air path connection between a port c of an auxiliary air storage tank (3) and a port a of a twelfth three-way valve (44), high-pressure air in a right front drive wheel brake air chamber (43) sequentially passes through the port b and the port a of a right front drive wheel ABS electromagnetic valve (38), the port b and the port c of an eleventh three-way valve (39), the port a and the port b of a right front drive wheel one-way valve (37), the port b and the port c of a thirteenth through valve (36), and the port a and the port b of the ninth three-way valve (35) to enter the front drive shaft relay valve (26), and is discharged into the atmosphere through the front drive shaft relay valve (26), thereby releasing the pneumatic braking force of the right front drive wheel (42).
The working characteristics of a rear drive shaft switch electromagnetic valve (5), a front drive shaft switch electromagnetic valve (45), a right rear drive wheel stacked one-way valve (8), a left rear drive wheel stacked one-way valve (23), a right front drive wheel stacked one-way valve (40), a left front drive vehicle wheel stacked one-way valve (28), a right rear drive wheel one-way valve (14), a left rear drive wheel one-way valve (17), a right front drive wheel one-way valve (37) and a left front drive vehicle wheel one-way valve (34) in a four-wheel drive electric vehicle braking energy recovery air circuit based on stacked one-way valves and one-way valves are described as follows.
When a driver does not step on the brake pedal (1), the rear driving shaft switch electromagnetic valve (5) is in a turn-off state, and high-pressure gas does not exist at the port a of the first three-way valve (7); when a driver steps on the brake pedal (1) but does not trigger the braking energy recovery function, the rear driving shaft switch electromagnetic valve (5) is in a turn-off state, and no high-pressure gas exists at the port a of the first three-way valve (7); when a driver steps on the brake pedal (1) and triggers the braking energy recovery function, the rear driving shaft switch electromagnetic valve (5) is in a conduction state, and high-pressure gas is arranged at the port a of the first three-way valve (7).
When a driver does not step on the brake pedal (1), the front drive shaft switch electromagnetic valve (45) is in a turn-off state, and high-pressure gas does not exist at the port a of the twelfth three-way valve (44); when a driver steps on the brake pedal (1) but does not trigger the braking energy recovery function, the front drive shaft switch electromagnetic valve (45) is in a turn-off state, and no high-pressure gas exists at the port a of the twelfth three-way valve (44); when a driver steps on the brake pedal (1) and triggers the braking energy recovery function, the front drive shaft switch electromagnetic valve (45) is in a conducting state, and high-pressure gas is arranged at the port a of the twelfth three-way valve (44).
The right rear drive wheel superposition type check valve (8) has three ports: the gas can only flow into the gas inlet port a and the gas inlet port b of the right rear driving wheel superposition type one-way valve (8) and flow out of the gas outlet port c of the right rear driving wheel superposition type one-way valve (8), so that the gas can only be controlled to flow into the right rear driving wheel brake gas chamber (11) from the first three-way valve (7) or the rear driving shaft relay valve (25), and the gas cannot be conducted in the reverse direction; when the air pressure of the air inlet port a is larger than that of the air inlet port b, the port a is communicated with the port c, and the port b is closed; when the air pressure of the air inlet port a is smaller than that of the air inlet port b, the port b and the port c are conducted, and the port a is closed.
The left rear drive wheel superposition type check valve (23) has three ports: the gas can only flow into the left rear driving wheel superposition type one-way valve (23) from the gas inlet port a and the gas inlet port b and flow out of the left rear driving wheel superposition type one-way valve (23) from the gas outlet port c, so that the gas can only flow into the left rear driving wheel brake air chamber (21) from the first three-way valve (7) and the rear driving shaft relay valve (25) and can not be conducted in the reverse direction; when the air pressure of the air inlet port a is larger than that of the air inlet port b, the port a is communicated with the port c, and the port b is closed; when the air pressure of the air inlet port a is smaller than that of the air inlet port b, the port b and the port c are conducted, and the port a is closed.
The right front drive wheel superposition check valve (40) has three ports: the air can only flow into the air inlet port a and the air inlet port b of the right front driving wheel superposition type one-way valve (40) and flow out of the air outlet port c of the right front driving wheel superposition type one-way valve (40), so that the air can only flow into the right front driving wheel brake air chamber (43) from the twelfth three-way valve (44) or the front driving shaft relay valve (26) and can not be conducted in the reverse direction; when the air pressure of the air inlet port a is larger than that of the air inlet port b, the port a is communicated with the port c, and the port b is closed; when the air pressure of the air inlet port a is smaller than that of the air inlet port b, the port b and the port c are conducted, and the port a is closed.
The left front drive wheel superposition type one-way valve (28) has three ports: the air can only flow into the air inlet port a and the air inlet port b of the left front drive vehicle wheel superposition type one-way valve (28) and flow out of the air outlet port c of the left front drive vehicle wheel superposition type one-way valve (28), so that the air can only be controlled to flow to the left front drive vehicle wheel brake air chamber (32) from the twelfth three-way valve (44) or the front drive shaft relay valve (26), and the reverse direction cannot be conducted; when the air pressure of the air inlet port a is larger than that of the air inlet port b, the port a is communicated with the port c, and the port b is closed; when the air pressure of the air inlet port a is smaller than that of the air inlet port b, the port b and the port c are conducted, and the port a is closed.
The right rear drive wheel check valve (14) has two ports: and the air inlet port a and the air outlet port b are used for controlling the air to flow from the rear right driving wheel brake air chamber (11) to the rear driving shaft relay valve (25).
The left rear drive wheel check valve (17) has two ports: and the air inlet port a and the air outlet port b are used for controlling the air to flow from the left rear driving wheel brake air chamber (21) to the rear driving shaft relay valve (25).
The right front drive wheel check valve (37) has two ports: and the air inlet port a and the air outlet port b can only flow from the air inlet port a to the air outlet port b, and can not conduct in the reverse direction, so that the air inlet port a and the air outlet port b are used for controlling the air to flow from the front right driving wheel brake air chamber (43) to the front driving shaft relay valve (26).
The left front drive wheel check valve (34) has two ports: and the air inlet port a and the air outlet port b are used for controlling the air to flow from the left front driving wheel brake air chamber (32) to the front driving shaft relay valve (26).
As can be seen from the above discussion, the auxiliary air tank (3), the rear drive shaft on-off solenoid valve (5), the first three-way valve (7), the right rear drive wheel stacked check valve (8), the second three-way valve (13), the right rear drive wheel check valve (14), the third three-way valve (15), the fourth three-way valve (16), the left rear drive wheel check valve (17), the fifth three-way valve (22), the left rear drive wheel stacked check valve (23), the sixth three-way valve (24), the rear drive shaft relay valve (25), the front drive shaft relay valve (26), the seventh three-way valve (27), the left front drive wheel stacked check valve (28), the eighth three-way valve (29), the left front drive wheel check valve (34), the ninth three-way valve (35), the thirteenth three-way valve (36), the right front drive wheel check valve (37), the eleventh three-way valve (39), and the fourth three-way valve (16) are added to the drive wheel brake air passage, The front right driving wheel superposition type one-way valve (40), the twelfth three-way valve (44), the front driving shaft switch electromagnetic valve (45) and the like, so that each driving wheel brake circuit has two independent high-pressure air sources and a double-circuit structure, and when a driver steps on the brake pedal (1) and does not trigger the brake energy recovery function, high-pressure air required by the left rear driving wheel (20), the right rear driving wheel (10), the left front driving wheel (30) and the front right driving wheel (42) is provided by the main air storage tank (4); when a driver steps on a brake pedal (1) and triggers a braking energy recovery function, high-pressure gas required by a left rear driving wheel (20), a right rear driving wheel (10), a left front driving wheel (30) and a right front driving wheel (42) is provided by the large air pressure in a main air storage tank (4) and an auxiliary air storage tank (3), so that the key problems that the response speed of the coupling braking force of the driving wheel is slow and the coupling braking force lags behind the required braking force caused by low air source pressure in the continuous braking in the existing scheme can be effectively solved.
Claims (1)
1. The utility model provides a four-wheel drive electric motor car braking energy recovery gas circuit based on stack formula check valve and check valve which characterized in that:
comprises a brake pedal (1), a brake valve (2), an auxiliary gas storage tank (3), a main gas storage tank (4), a rear drive shaft switch solenoid valve (5), an air compressor (6), a first three-way valve (7), a right rear drive wheel superposed one-way valve (8), a right rear drive wheel brake chamber (11), a right rear drive wheel ABS solenoid valve (12), a second three-way valve (13), a right rear drive wheel one-way valve (14), a third three-way valve (15), a fourth three-way valve (16), a left rear drive wheel one-way valve (17), a left rear drive wheel ABS solenoid valve (18), a left rear drive wheel brake chamber (21), a fifth three-way valve (22), a left rear drive wheel superposed one-way valve (23), a sixth three-way valve (24), a rear drive shaft relay valve (25), a front drive shaft relay valve (26), a seventh three-way valve (27), a left front drive wheel superposed one-way valve (28), The brake system comprises an eighth three-way valve (29), a left front driving wheel brake air chamber (32), a left front driving wheel ABS solenoid valve (33), a left front driving wheel one-way valve (34), a ninth three-way valve (35), a thirteenth through valve (36), a right front driving wheel one-way valve (37), a right front driving wheel ABS solenoid valve (38), an eleventh through valve (39), a right front driving wheel stacked one-way valve (40), a right front driving wheel brake air chamber (43), a twelfth three-way valve (44) and a front driving shaft switch solenoid valve (45);
an air outlet port b of the air compressor (6) is connected with an air inlet port a of the main air storage tank (4) through an air path, and an air outlet port a of the air compressor (6) is connected with an air inlet port a of the auxiliary air storage tank (3) through an air path;
an air inlet port a of the brake valve (2) is connected with an air outlet port d of the main air storage tank (4) through an air path, an air inlet port b of the brake valve (2) is connected with an air outlet port c of the main air storage tank (4) through an air path, an air outlet port c of the brake valve (2) is connected with a control port c of the front drive shaft relay valve (26) through an air path, and an air outlet port d of the brake valve (2) is connected with a control port c of the rear drive shaft relay valve (25) through an air path;
a port a of the rear drive shaft relay valve (25) is connected with an air outlet port e of the main air storage tank (4) through an air passage, and a port b of the rear drive shaft relay valve (25) is connected with a port b of the sixth three-way valve (24) through an air passage;
a port a of a sixth three-way valve (24) is connected with a port c of a third three-way valve (15) through an air passage, the port a of the third three-way valve (15) is connected with an air inlet port a of a right rear driving wheel superposition type one-way valve (8) through an air passage, the port b of the third three-way valve (15) is connected with an air outlet port b of the right rear driving wheel one-way valve (14) through an air passage, the air outlet port c of the right rear driving wheel superposition type one-way valve (8) is connected with a port a of a second three-way valve (13) through an air passage, the air inlet port a of the right rear driving wheel one-way valve (14) is connected with a port c of the second three-way valve (13) through an air passage, the port b of the second three-way valve (13) is connected with an air inlet port a of a right rear driving wheel ABS solenoid valve (12) through an air passage, and the air inlet port b of the right rear driving wheel ABS solenoid valve (12) is connected with a right rear driving wheel brake air chamber (11) through an air passage;
a port c of a sixth three-way valve (24) is connected with a port c of a fourth three-way valve (16) through an air passage, a port a of the fourth three-way valve (16) is connected with an air inlet port a of a left rear driving wheel superposition type one-way valve (23) through the air passage, a port b of the fourth three-way valve (16) is connected with an air outlet port b of the left rear driving wheel one-way valve (17) through the air passage, an air outlet port c of the left rear driving wheel superposition type one-way valve (23) is connected with a port a of a fifth three-way valve (22) through the air passage, an air inlet port a of the left rear driving wheel one-way valve (17) is connected with a port c of the fifth three-way valve (22) through the air passage, a port b of the fifth three-way valve (22) is connected with an air inlet port a of a left rear driving wheel ABS solenoid valve (18) through the air passage, and an air inlet port b of the left rear driving wheel ABS solenoid valve (18) is connected with a left rear driving wheel brake air chamber (21) through the air passage;
an air outlet port b of the auxiliary air storage tank (3) is connected with an air inlet port a of the rear drive shaft switching electromagnetic valve (5) through an air passage, an air outlet port b of the rear drive shaft switching electromagnetic valve (5) is connected with an air inlet port a of the first three-way valve (7) through an air passage, an air outlet port b of the first three-way valve (7) is connected with an air inlet port b of the right rear drive wheel superposition type one-way valve (8) through an air passage, and an air outlet port c of the first three-way valve (7) is connected with an air inlet port b of the left rear drive wheel superposition type one-way valve (23) through an air passage;
a port a of the front drive shaft relay valve (26) is connected with an air outlet port b of the main air storage tank (4) through an air path, and a port b of the front drive shaft relay valve (26) is connected with a port b of a ninth three-way valve (35) through an air path;
a port a of the ninth three-way valve (35) is connected with a port c of a thirteenth through air passage, a port a of the thirteenth through valve (36) is connected with an air inlet port a of a right front driving wheel superposition type one-way valve (40) through an air passage, a port b of the thirteenth through valve (36) is connected with an air outlet port b of the right front driving wheel one-way valve (37) through an air passage, an air outlet port c of the right front driving wheel superposition type one-way valve (40) is connected with a port a of an eleventh through air passage, an air inlet port a of the right front driving wheel one-way valve (37) is connected with a port c of the eleventh through an air passage, a port b of the eleventh through valve (39) is connected with an air inlet port a of a right front driving wheel ABS solenoid valve (38), and an air inlet port b of the right front driving wheel ABS solenoid valve (38) is connected with a right front driving wheel brake air chamber (43) through an air passage;
a port c of the ninth three-way valve (35) is connected with a port c of the seventh three-way valve (27) through an air passage, a port a of the seventh three-way valve (27) is connected with an air inlet port a of the left front drive vehicle wheel superposed one-way valve (28) through an air passage, a port b of the seventh three-way valve (27) is connected with an air outlet port b of the left front drive vehicle wheel one-way valve (34) through an air passage, an air outlet port c of the left front drive vehicle wheel superposed one-way valve (28) is connected with a port a of the eighth three-way valve (29) through an air passage, an air inlet port a of the left front drive vehicle wheel one-way valve (34) is connected with a port c of the eighth three-way valve (29) through an air passage, a port b of the eighth three-way valve (29) is connected with an air inlet port a of the left front drive vehicle wheel ABS solenoid valve (33) through an air passage, and an air inlet port b of the left front drive vehicle wheel brake air chamber (32) is connected with an air passage;
an air outlet port c of the auxiliary air storage tank (3) is connected with an air inlet port a of the front drive shaft switch electromagnetic valve (45) through an air passage, an air outlet port b of the front drive shaft switch electromagnetic valve (45) is connected with an air inlet port a of the twelfth three-way valve (44) through an air passage, an air outlet port b of the twelfth three-way valve (44) is connected with an air inlet port b of the right front drive wheel superposition type one-way valve (40) through an air passage, and an air outlet port c of the twelfth three-way valve (44) is connected with an air inlet port b of the left front drive wheel superposition type one-way valve (28) through an air passage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910429118.9A CN110077379B (en) | 2019-05-22 | 2019-05-22 | Four-wheel drive electric vehicle braking energy recovery gas circuit based on stacked one-way valve and one-way valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910429118.9A CN110077379B (en) | 2019-05-22 | 2019-05-22 | Four-wheel drive electric vehicle braking energy recovery gas circuit based on stacked one-way valve and one-way valve |
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| CN110077379A CN110077379A (en) | 2019-08-02 |
| CN110077379B true CN110077379B (en) | 2022-02-18 |
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| KR20030032661A (en) * | 2001-10-19 | 2003-04-26 | 현대자동차주식회사 | An air brake circuit for tractor |
| CN2797145Y (en) * | 2004-11-23 | 2006-07-19 | 山东时风（集团）有限责任公司 | Single air chamber biloop pneumatic brake device |
| CN101603880A (en) * | 2009-07-14 | 2009-12-16 | 清华大学 | Automotive anti-lock braking and braking energy feedback integration control hardware are the-loop test bed |
| CN205168477U (en) * | 2015-11-03 | 2016-04-20 | 南京理工大学 | Service braking system all based on intelligence hill start is supplementary |
| CN106864435B (en) * | 2015-12-10 | 2019-10-29 | 中国国际海运集装箱(集团)股份有限公司 | A kind of airport ferry push security system |
| CN106627535A (en) * | 2017-03-08 | 2017-05-10 | 吉林大学 | Air braking system with active braking function and control method |
| CN106802650B (en) * | 2017-03-28 | 2018-09-25 | 吉林大学 | Electric motor coach integration control hardware is in ring test platform and test method |
| CN207725229U (en) * | 2017-12-04 | 2018-08-14 | 吉林大学 | A kind of air pressure type braking energy recovery system |
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