CN113212092B - Braking energy recovery system for air suspension energy storage and adjustment and control method - Google Patents
Braking energy recovery system for air suspension energy storage and adjustment and control method Download PDFInfo
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- CN113212092B CN113212092B CN202110535066.0A CN202110535066A CN113212092B CN 113212092 B CN113212092 B CN 113212092B CN 202110535066 A CN202110535066 A CN 202110535066A CN 113212092 B CN113212092 B CN 113212092B
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- 239000000725 suspension Substances 0.000 title claims abstract description 129
- 238000004146 energy storage Methods 0.000 title claims abstract description 32
- 238000011084 recovery Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 21
- 239000003921 oil Substances 0.000 claims description 34
- 230000001133 acceleration Effects 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
- B60G17/0155—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit pneumatic unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/018—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
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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
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
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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
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides a braking energy recovery system for air suspension energy storage and adjustment and a control method thereof, which are used for converting energy generated during vehicle braking into driving force of an air pump device through a gear train and a hydraulic clutch, realizing exhausting and delivering air to an air storage chamber to realize energy storage, storing the air for air suspension adjustment, and directly using the air generated by the air pump device to improve the air pressure value of the air suspension to realize air suspension adjustment so as to inhibit nodding action during vehicle braking; meanwhile, a vehicle with a braking energy recovery system facing air suspension energy storage and adjustment is arranged, and braking is divided into a slight braking mode and a normal braking mode. According to the invention, the combination of the air pump driving shaft and the air pump driving crankshaft is controlled through the cooperation of the hydraulic clutch and the hydraulic oil way, so that the vehicle braking energy recovery is realized by using the air pump device, and the energy storage and the adjustment facing the air suspension are finally realized through controlling each electromagnetic valve.
Description
Technical Field
The invention belongs to the technical field of braking energy recovery and air suspensions, and particularly relates to a braking energy recovery system for air suspension energy storage and adjustment and a control method thereof.
Background
The braking energy recovery system recovers the surplus energy released by the vehicle during braking or freewheeling, converts the surplus energy into electric energy through the generator, and stores the electric energy in the storage battery for later acceleration driving or converts the electric energy into other available energy for further utilization. Braking energy recovery is one of the important technologies of modern electric vehicles and hybrid vehicles and is also an important characteristic of the modern electric vehicles and the hybrid vehicles.
The air suspension is also called an adjustable suspension, and the height and hardness of the suspension can be adjusted according to different road conditions by adding an inflatable air pressure device on the suspension. The traditional air suspension air pressure regulating parts are more, occupy a part of automobile space, and have certain significance in innovatively changing the air suspension air pressure regulating parts.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the braking energy recovery system for air suspension energy storage and adjustment and the control method thereof, and the characteristics of the hydraulic clutch are utilized to ensure that the braking mechanical energy recovery and reutilization process is realized only during braking, the normal driving of a vehicle is not influenced, fewer electric elements are used, and the extra electric energy consumption can be avoided to a certain extent.
The present invention achieves the above technical object by the following means.
Braking energy recovery system towards air suspension energy storage and regulation includes:
the brake master cylinder is characterized in that a liquid outlet of the brake master cylinder is connected with a first three-way electromagnetic valve, the first three-way electromagnetic valve is connected with a brake, and the brake is connected with a liquid inlet of the brake master cylinder; the first three-way electromagnetic valve is also connected with the hydraulic clutch, a pressurizing electromagnetic valve is arranged on a pipeline connected with the hydraulic clutch, the hydraulic clutch is also connected with a liquid inlet of the brake master cylinder, and a normally open one-way valve is arranged on a pipeline connected with the brake master cylinder; the hydraulic clutch combines an air pump driving shaft with an air pump driving crankshaft, and the air pump driving shaft is connected with a gear train; an oil pressure sensor is arranged in the brake master cylinder;
the air pump device is provided with an air inlet and an air outlet; the exhaust port is respectively connected with a second three-way electromagnetic valve and a fourth one-way electromagnetic valve, the second three-way electromagnetic valve is connected with the air storage chamber, a second one-way electromagnetic valve is arranged on a pipeline connected with the air storage chamber, and the second three-way electromagnetic valve is also communicated with the atmosphere; the second one-way electromagnetic valve is connected with the air storage chamber and the air suspension inflation inlet, a first one-way electromagnetic valve is arranged on a pipeline connected with the air storage chamber, and an air suspension control valve is arranged on a pipeline connected with the air suspension inflation inlet; the air suspension is also connected with the air storage chamber, the air storage chamber is also connected with the air compressor, and a third one-way electromagnetic valve is arranged on a pipeline connected with the air compressor; the air storage chamber is provided with an air pressure sensor;
the electronic control unit ECU is respectively connected with the first three-way electromagnetic valve, the booster electromagnetic valve, the air compressor, the third one-way electromagnetic valve, the second three-way electromagnetic valve, the fourth one-way electromagnetic valve, the air pressure sensor, the oil pressure sensor, the first one-way electromagnetic valve, the second one-way electromagnetic valve, the air suspension control valve and the air pressure sensor of the air suspension through signals.
In the above technical scheme, the air suspension is arranged in the air suspension system, two air suspension systems and two air pump devices are arranged, and the two air suspension systems and the two air pump devices are symmetrically arranged relative to the front and rear axes of the vehicle.
In the technical scheme, the tail end of the brake master cylinder is provided with a brake piston, and the brake piston is connected to a brake pedal; the brake master cylinder is arranged in the liquid storage chamber.
In the technical scheme, an air compression unit and an air filter are further arranged between the air suspension control valve and the air suspension inflation inlet.
In the technical scheme, the air storage chamber is also provided with a pressure release valve.
A control method of a braking energy recovery system facing air suspension energy storage and adjustment comprises the steps of determining a braking mode of a vehicle provided with the braking energy recovery system facing air suspension energy storage and adjustment, and air suspension energy storage and adjustment;
the braking mode is divided into a slight braking mode and a normal braking mode according to whether the oil pressure value of the brake master cylinder exceeds a preset oil pressure value;
when the braking mode is a slight braking mode, braking hydraulic oil passes through the first three-way electromagnetic valve, is pressurized by the pressurizing electromagnetic valve and enters the hydraulic clutch, so that the hydraulic clutch is closed, and the braking hydraulic oil is discharged from the hydraulic clutch and then returns to the braking master cylinder to realize braking;
when the braking mode is the normal braking mode, braking hydraulic oil passes through the first three-way electromagnetic valve, one part of hydraulic oil enters the hydraulic clutch to enable the hydraulic clutch to be closed, the braking hydraulic oil is discharged from the hydraulic clutch and then returns to the braking master cylinder, and the other part of hydraulic oil enters the brake after passing through the first three-way electromagnetic valve to realize normal braking of the brake.
Further, when the oil pressure value of the brake master cylinder does not exceed the preset oil pressure value, the brake master cylinder is in a slight brake mode; and when the oil pressure value of the brake master cylinder exceeds a preset oil pressure value, the brake master cylinder is in a normal braking mode.
Further, the air suspension energy storage process specifically comprises the following steps:
when the air pressure value in the air storage chamber exceeds a safety limit value, the electronic control unit ECU controls the second one-way electromagnetic valve to be electrified and closed, and the second three-way electromagnetic valve is electrified, so that the second three-way electromagnetic valve is connected with the atmosphere, the air generated by the air pump device is discharged into the atmosphere, and the air supply to the air storage chamber is stopped;
when the air pressure value of the air storage chamber does not exceed the safety limit value, the electronic control unit ECU controls the second one-way electromagnetic valve to be powered off and on, the second three-way electromagnetic valve to be powered off and on, and air generated by the air pump device enters the air storage chamber and continuously supplies air to the air storage chamber.
Further, the air suspension adjusting process specifically comprises the following steps:
when the acceleration of the vehicle body does not exceed the preset acceleration, the electronic control unit ECU controls the fourth one-way electromagnetic valve to be powered off and the first one-way electromagnetic valve to be powered off, the air pump device and the air storage chamber do not output air to the air suspension, and the air pressure of the air suspension is not regulated;
when the acceleration of the vehicle body exceeds the preset acceleration, further judging whether the air pressure value in the air storage chamber is lower than a preset low air pressure value, if the air pressure value in the air storage chamber is lower than the preset low air pressure value, controlling the first one-way electromagnetic valve to be electrified and conducted, the second one-way electromagnetic valve to be electrified and closed, the fourth one-way electromagnetic valve to be electrified and conducted, the second three-way electromagnetic valve to be powered off and conducted, and the air suspension control valve to be electrified and conducted, wherein the air pump device and the air storage chamber output air together, the air pump device directly outputs air to the air suspension without outputting air to the air storage chamber, and finally improving the air pressure value of the air suspension; if the air pressure value in the air storage chamber is not lower than the preset low air pressure value, the electronic control unit ECU controls the first one-way electromagnetic valve to be electrified and conducted, the second one-way electromagnetic valve to be powered off and conducted, the fourth one-way electromagnetic valve to be powered off and closed, and the air suspension control valve to be electrified and conducted, the air storage chamber outputs air to the air suspension, the air pump device continuously supplies air to the air storage chamber, the air suspension does not directly output air, and finally the air suspension is led to the air suspension to output air only through the air storage chamber, so that the air pressure value of the air suspension is improved.
Further, when the air storage chamber is in a low-pressure state, the air generated by the air compressor enters the air storage chamber, so that the air pressure value of the air storage chamber is recovered to be above the low-pressure value; in the low air pressure state, when the acceleration of the vehicle body does not exceed a preset acceleration value, the second one-way electromagnetic valve and the second three-way electromagnetic valve are consistent with the state when the safety limit value is not exceeded; otherwise, the second one-way electromagnetic valve is powered on and closed, and the second three-way electromagnetic valve is powered off and connected.
The beneficial effects of the invention are as follows:
the invention converts the energy generated by the vehicle braking into the driving force of the air pump device through the gear train and the hydraulic clutch, realizes the pumping and exhausting, and conveys the air to the air storage chamber to realize the energy storage, and reserves the air for the air suspension adjustment, and can also directly use the air generated by the air pump device to improve the air pressure value of the air suspension to realize the adjustment of the air suspension so as to inhibit the nodding action of the vehicle during the braking; meanwhile, a vehicle facing the air suspension energy storage and regulation braking energy recovery system is arranged, braking is divided into a slight braking mode and a normal braking mode, when the braking mode is the slight braking mode, the vehicle recovers braking energy and acts on the air pump device, so that part of mechanical energy is consumed to complete the slight braking, and the vehicle speed is reduced; when the braking mode is normal braking, the vehicle also recovers braking energy and acts on the air pump device to consume part of mechanical energy, and meanwhile, normal braking of the brake is realized, so that the braking effect of the vehicle is improved to a certain extent. The method comprises the following steps:
(1) According to the invention, the braking energy of the vehicle is recovered through the gear train and the hydraulic clutch, so that the air pump device is driven to realize pumping and exhausting, and the air is conveyed to the air storage chamber to realize energy storage; according to the invention, braking inertia is converted into driving energy of the air pump device through fewer transmission parts, so that the energy conversion rate and energy loss are reduced, and the energy utilization rate is improved;
(2) According to the invention, the air suspension can be regulated through the air storage chamber, the air suspension can also be directly regulated through the air pump device, and the electronic control unit ECU is used for controlling each electromagnetic valve in the air path to inhibit the nodding action of the vehicle during braking;
(3) According to the invention, different braking modes can be realized by controlling the valve in the hydraulic oil way, energy during braking is converted into energy for driving the air pump device to realize slight braking, and the braking effect can be improved to a certain extent while energy recovery is realized.
Drawings
FIG. 1 is a schematic diagram of a braking energy recovery system for air suspension energy storage and conditioning according to the present invention;
FIG. 2 is a schematic view of the air pump device according to the present invention;
FIG. 3 is a schematic diagram of signal processing transmission according to the present invention;
FIG. 4 is a flow chart of the electronic control of the hydraulic circuit for implementing different braking modes according to the present invention;
FIG. 5 is a flow chart of the electronic control of the air circuit for storing energy in the air suspension according to the present invention;
FIG. 6 is a flow chart of the electronic control of the air circuit for effecting adjustment of the air suspension of the present invention;
in the figure, the 1-electronic control unit ECU, the 2-air pressure sensor, the 3-air reservoir, the 4-first one-way solenoid valve, the 5-air suspension system, the 6-air suspension control valve, the 7-air compression unit, the 8-air cleaner, the 9-axle housing, the 10-axle, the 11-air pump device, the 12-air pump driving crankshaft, the 13-hydraulic clutch, the 14-air pump driving shaft, the 15-driving gear, the 16-driven gear, the 17-brake disc, the 18-brake, the 19-brake master cylinder, the 20-brake piston, the 21-brake pedal, the 22-liquid storage chamber, the 23-oil pressure sensor, the 24-first three-way solenoid valve, the 25-pressurizing solenoid valve, the 26-normally open one-way valve, the 27-second one-way solenoid valve, the 28-air compressor, the 29-third one-way solenoid valve, the 30-second three-way solenoid valve, the 31-fourth one-way solenoid valve, the 51-air suspension, the 111-air inlet and the 112-exhaust port.
Detailed Description
The invention will be further described with reference to the drawings and the specific embodiments, but the scope of the invention is not limited thereto.
As shown in fig. 1, the braking energy recovery system for air suspension energy storage and adjustment includes a brake pedal 21, a brake piston 20, a brake master cylinder 19, a normally open check valve 26, a hydraulic clutch 13, a driving gear 15, a driven gear 16, an axle 10, an axle housing 9, an air pump drive shaft 14, an air pump drive crankshaft 12, an air pump device 11, an air reservoir 3, an air suspension system 5, an electronic control unit ECU1, a vehicle acceleration sensor 33, and an oil pressure sensor 23. The two air suspension systems 5 and the two air pump devices 11 are arranged in the braking energy recovery system facing the air suspension energy storage and adjustment, the two air suspension systems 5 and the two air pump devices 11 are symmetrically arranged about the front-rear axis of the vehicle, and the air pump devices 11 are positioned in front of the air suspension systems 5 in the vehicle advancing direction; the two air pump devices 11 are disposed in parallel with the vehicle chassis. For ease of viewing, only one air suspension system 5 and air pump device 11 is shown in fig. 1.
The brake pedal 21 is connected with a brake piston 20, the tail end of the brake piston 20 is arranged in a brake master cylinder 19, the brake master cylinder 19 is provided with a liquid storage chamber 22, and an oil pressure sensor 23 is arranged in the brake master cylinder 19; the liquid outlet of the brake master cylinder 19 is connected with a first three-way electromagnetic valve 24 through a pipeline, the first three-way electromagnetic valve 24 is connected with a brake 18 through a pipeline, and the brake 18 is connected with the liquid inlet of the brake master cylinder 19 through a pipeline; the first three-way electromagnetic valve 24 is also connected with the hydraulic clutch 13 through a pipeline, a pressurizing electromagnetic valve 25 is arranged on the pipeline connected with the hydraulic clutch 13, the hydraulic clutch 13 is also connected with a liquid inlet of the brake master cylinder 19 through a pipeline, and a normally open check valve 26 is arranged on the pipeline connected with the brake master cylinder 19. When the first three-way electromagnetic valve 24 is de-energized, the first three-way electromagnetic valve 24 is engaged only with the oil passage of the hydraulic clutch 13; when the first three-way electromagnetic valve 24 is energized, the first three-way electromagnetic valve 24 is simultaneously engaged with the oil passages of the hydraulic clutch 13 and the brake 18. When the vehicle provided with the braking energy recovery system facing the air suspension energy storage and adjustment is in a non-braking state, the oil pressure in the hydraulic clutch 13 is insufficient, and the vehicle is in a separation state, and at the moment, the air pump driving shaft 14 is separated from the air pump driving crankshaft 12; in the braking state, the oil pressure in the hydraulic clutch 13 reaches its engagement oil pressure, the hydraulic clutch 13 is engaged, and at this time the air pump drive shaft 14 is engaged with the air pump drive crankshaft 12.
The driving gear 15 is connected to the axle 10 through a spline, the axle 10 is arranged in the axle housing 9, the driven gear 16 is connected to the air pump driving shaft 14 through a spline, the driving gear 15 is meshed with the driven gear 16, and the driving gear 15 transmits rotation of the axle 10 to the air pump driving shaft 14 through the driven gear 16. The air pump drive shaft 14 is engaged with the air pump drive crankshaft 12 through the hydraulic clutch 13, and the air pump drive crankshaft 12 is fixed inside the air pump device 11 housing through a bearing and connected with the air pump device 11. Referring to fig. 2, the air pump device 11 is provided with an air inlet 111 at the top and an air outlet 112 at the side, the air outlet 112 being connected with the second three-way electromagnetic valve 30 and the fourth one-way electromagnetic valve 31 through pipes, respectively; the second three-way electromagnetic valve 30 is connected with the air storage chamber 3 through a pipeline, and a second one-way electromagnetic valve 27 is arranged on the pipeline connected with the air storage chamber 3 and is used for realizing energy storage of the air suspension 51; the second three-way electromagnetic valve 30 is also in communication with the atmosphere; the second one-way electromagnetic valve 27 is respectively connected with the air storage chamber 3 and the air suspension 51 through a pipeline, the pipeline connected with the air storage chamber 3 is provided with the first one-way electromagnetic valve 4, the pipeline connected with the air suspension 51 through the air charging port is sequentially provided with the air suspension control valve 6, the air compression unit 7 and the air filter 8, and the air suspension control valve is used for realizing the adjustment of the air suspension 51, and the air suspension 51 is also connected with the air storage chamber 3 through the pipeline; the air storage chamber 3 is also connected with the air compressor 28 through a pipeline, and a third one-way electromagnetic valve 29 is arranged on the pipeline connected with the air compressor 28; the air storage chamber 3 is also provided with an air pressure sensor 2 and a pressure relief valve (not shown in the figure).
The electronic control unit ECU1 is respectively in signal connection with the first three-way solenoid valve 24, the booster solenoid valve 25, the air compressor 28, the third one-way solenoid valve 29, the second three-way solenoid valve 30, the fourth one-way solenoid valve 31, the air pressure sensor 2, the oil pressure sensor 23, the first one-way solenoid valve 4, the second one-way solenoid valve 27, the air suspension control valve 6, and the air pressure sensor of the air suspension 51.
The vehicle body provided with the braking energy recovery system facing the air suspension energy storage and adjustment is also provided with an acceleration sensor, and the acceleration sensor is in signal connection with the electronic control unit ECU 1.
As shown in fig. 3, the ECU1 is provided with a signal processing module, a judging module and an output module, the air pressure sensor 2 collects the air pressure value in the air storage chamber 3, the oil pressure sensor collects the oil pressure value in the brake master cylinder 19, and the acceleration sensor obtains the vehicle body acceleration value, and the collected signals are sent to the signal processing module to judge whether the air pressure value of the air storage chamber, the oil pressure value of the brake master cylinder and the vehicle body acceleration value exceed preset values, so that the signals are transmitted to the corresponding electromagnetic valve and the air suspension control valve 6 through the output module, and different braking modes are realized through the on-off of the electromagnetic valve and the air suspension control valve 6.
The control method of the braking energy recovery system facing the air suspension energy storage and adjustment comprises the determination of a vehicle braking mode (a slight braking mode and a normal braking mode) and the air suspension energy storage and adjustment, and specifically comprises the following steps:
as shown in fig. 4, the vehicle braking mode provided with the braking energy recovery system facing the air suspension energy storage and adjustment is classified into a light braking mode and a normal braking mode according to whether the oil pressure value of the master cylinder exceeds a preset oil pressure value. When the oil pressure value of the brake master cylinder does not exceed the preset oil pressure value, the brake master cylinder is in a slight braking mode; and when the oil pressure value of the brake master cylinder exceeds a preset oil pressure value, the brake master cylinder is in a normal braking mode. When the braking mode is a slight braking mode, braking hydraulic oil passes through the first three-way electromagnetic valve 24 and enters the hydraulic clutch 13 after being pressurized by the pressurizing electromagnetic valve 25, so that the hydraulic clutch 13 is closed, the braking hydraulic oil is discharged from the hydraulic clutch 13 and then returns to the brake master cylinder 19 through the normally open one-way valve 26, at the moment, the inertia force of the vehicle drives the driving gear 15 to rotate, the driving gear 15 drives the driven gear 16 to rotate, the air pump driving shaft 14 is driven to rotate, the air pump driving shaft 14 drives the air pump to drive the crankshaft 12 to rotate through the hydraulic clutch 13, and finally the air pump device works, so that mechanical energy is consumed, and braking is realized; when the braking mode is the normal braking mode, braking hydraulic oil passes through the first three-way electromagnetic valve 24, a part of hydraulic oil enters the hydraulic clutch 13 through the pressurizing electromagnetic valve 25 (the pressurizing electromagnetic valve 25 does not pressurize the hydraulic oil in the mode), so that the hydraulic clutch 13 is closed, the part of braking hydraulic oil is discharged from the hydraulic clutch 13 and then returns to the brake master cylinder 19 through the normally open one-way valve 26, and the other part of hydraulic oil enters the brake 18 after passing through the first three-way electromagnetic valve 24, so that the normal braking process of the brake 18 is realized; in the normal braking mode, the brake 18 and the air pump device 11 both realize braking together. The slight braking mode only uses the movement of the air pump device 11 to consume mechanical energy, so as to realize the braking deceleration of the vehicle, and the normal braking mode uses the movement of the air pump device 11 to consume mechanical energy, and simultaneously uses the brake 18 to perform normal braking, so as to finally realize the braking of the vehicle.
As shown in fig. 5, when the air pressure value in the air storage chamber 3 exceeds a safety limit value, the electronic control unit ECU1 controls the second one-way electromagnetic valve 27 to be electrified and closed, and the second three-way electromagnetic valve 30 to be electrified, so that the second three-way electromagnetic valve 30 is connected with the atmosphere, the air generated by the air pump device 11 is discharged into the atmosphere, the air supply to the air storage chamber 3 is stopped, and meanwhile, the pressure is released through a pressure release valve, so that the safety is ensured; when the air pressure value of the air storage chamber 3 does not exceed the safety limit value, the electronic control unit ECU1 controls the second one-way electromagnetic valve 27 to be powered off and on, the second three-way electromagnetic valve 30 is connected with a pipeline of the air storage chamber 3, and air generated by the air pump device 11 enters the air storage chamber 3 and continuously supplies air to the air storage chamber 3.
The electronic control unit ECU1 is provided with a low air pressure limit value, when the air pressure value in the air storage chamber 3 is smaller than the low air pressure limit value, the air storage chamber 3 is judged to be in a low air pressure state, the electronic control unit ECU1 controls the air compressor 28 to be electrified to work, and controls the third one-way electromagnetic valve 29 to be electrified and conducted, so that the air generated by the air compressor 28 enters the air storage chamber 3, and the air pressure value of the air storage chamber 3 is recovered to be above the low air pressure value; in the low air pressure state, when the vehicle body acceleration does not exceed the preset acceleration value, the second one-way electromagnetic valve 27 and the second three-way electromagnetic valve 30 are consistent with the state when the safety limit value is not exceeded; otherwise, the second one-way electromagnetic valve 27 is powered off, and the second three-way electromagnetic valve 30 is powered off and on.
As shown in fig. 6, the electronic control unit ECU1 receives signals of the vehicle acceleration sensor 33 and the air pressure sensor 2, and first determines whether the vehicle body acceleration exceeds a preset acceleration; when the acceleration of the vehicle body does not exceed the preset acceleration, the electronic control unit ECU1 controls the fourth one-way electromagnetic valve 31 to be closed in a power-off mode and the first one-way electromagnetic valve 4 to be closed in a power-off mode, in this case, gas in the air pump device 11 does not enter the air suspension 51 through the fourth one-way electromagnetic valve 31, the air suspension control valve 6, the air compression unit 7 and the air filter 8 along a pipeline, gas in the air storage chamber 3 does not enter the air suspension 51 through the first one-way electromagnetic valve 4, the air suspension control valve 6, the air compression unit 7 and the air filter 8 along a pipeline, and neither the air pump device 11 nor the air storage chamber 3 outputs gas to the air suspension 51, so that the air pressure of the air suspension 51 is not regulated; when the acceleration of the vehicle body exceeds the preset acceleration, further judging whether the air pressure value in the air storage chamber 3 is lower than a preset low air pressure value, if the air pressure value in the air storage chamber is lower than the preset low air pressure value, controlling the first one-way electromagnetic valve 4 to be electrified and closed, the second one-way electromagnetic valve 27 to be electrified and closed, the fourth one-way electromagnetic valve 31 to be electrified and closed, the second three-way electromagnetic valve 30 to be disconnected and the air suspension control valve 6 to be electrified and closed by the electronic control unit ECU1, compressing air in the air pump device 11 and the air storage chamber 3 along a pipeline through the air compression unit 7 and the air filter 8 and filtering the air to enter the air suspension 51, and outputting the air by the air pump device 11 and the air storage chamber 3 together, wherein the air pump device 11 directly outputs the air to the air suspension 51 without outputting the air to the air storage chamber 3, and finally improving the air pressure value of the air suspension 51, and further adjusting the posture of the vehicle body so as to inhibit the nodding action when the vehicle brakes; if the air pressure value in the air storage chamber 3 is not lower than the preset low air pressure value, the electronic control unit ECU1 controls the first one-way electromagnetic valve 4 to be electrified and conducted, the second one-way electromagnetic valve 27 to be electrified and conducted, the fourth one-way electromagnetic valve 31 to be powered and closed, and the air suspension control valve 6 to be electrified and conducted, air in the air storage chamber 3 enters the air suspension 51 after being compressed by the air compression unit 7 and filtered by the air filter 8 along a pipeline, the air storage chamber 3 only outputs air to the air suspension 51, the air pump device 11 continues to supply air to the air storage chamber 3, the air suspension 51 is not directly output, and finally, the air storage chamber 3 only leads to the air suspension 51 to output air, so that the air pressure value of the air suspension 51 is improved, the air suspension 51 is regulated, the vehicle body posture is regulated, and the nodding action during vehicle braking is restrained.
The examples are preferred embodiments of the present invention, but the present invention is not limited to the above-described embodiments, and any obvious modifications, substitutions or variations that can be made by one skilled in the art without departing from the spirit of the present invention are within the scope of the present invention.
Claims (8)
1. Braking energy recovery system towards air suspension energy storage and regulation, characterized by includes:
the brake master cylinder (19), the liquid outlet of the brake master cylinder (19) is connected with a first three-way electromagnetic valve (24), the first three-way electromagnetic valve (24) is connected with a brake (18), and the brake (18) is connected with the liquid inlet of the brake master cylinder (19); the first three-way electromagnetic valve (24) is also connected with the hydraulic clutch (13), a pressurizing electromagnetic valve (25) is arranged on a pipeline connected with the hydraulic clutch (13), the hydraulic clutch (13) is also connected with a liquid inlet of the brake master cylinder (19), and a normally open one-way valve (26) is arranged on a pipeline connected with the brake master cylinder (19); the hydraulic clutch (13) combines an air pump driving shaft (14) with the air pump driving crankshaft (12), and the air pump driving shaft (14) is connected with a gear train; an oil pressure sensor (23) is arranged in the brake master cylinder (19);
an air pump device (11), wherein an air inlet (111) and an air outlet (112) are arranged on the air pump device (11); the exhaust port (112) is respectively connected with a second three-way electromagnetic valve (30) and a fourth one-way electromagnetic valve (31), the second three-way electromagnetic valve (30) is connected with the air storage chamber (3), a second one-way electromagnetic valve (27) is arranged on a pipeline connected with the air storage chamber (3), and the second three-way electromagnetic valve (30) is also communicated with the atmosphere; the fourth one-way electromagnetic valve (31) is connected with the air storage chamber (3) and the air suspension (51) through an inflation inlet, a first one-way electromagnetic valve (4) is arranged on a pipeline connected with the air storage chamber (3), and an air suspension control valve (6) is arranged on a pipeline connected with the air suspension (51) through the inflation inlet; the air suspension (51) is also connected with the air storage chamber (3), the air storage chamber (3) is also connected with the air compressor (28), and a third one-way electromagnetic valve (29) is arranged on a pipeline connected with the air compressor (28); the air storage chamber (3) is provided with an air pressure sensor (2);
the electronic control unit ECU (1) is respectively connected with the first three-way electromagnetic valve (24), the booster electromagnetic valve (25), the air compressor (28), the third one-way electromagnetic valve (29), the second three-way electromagnetic valve (30), the fourth one-way electromagnetic valve (31), the air pressure sensor (2), the oil pressure sensor (23), the first one-way electromagnetic valve (4), the second one-way electromagnetic valve (27), the air suspension control valve (6) and the air pressure sensor of the air suspension (51) in a signal manner;
the air suspension (51) is positioned in the air suspension system (5), two air suspension systems (5) and two air pump devices (11) are arranged, and the two air suspension systems (5) and the two air pump devices (11) are symmetrically arranged about the front-rear axis of the vehicle;
an air compression unit (7) and an air filter (8) are further arranged between the air suspension control valve (6) and the air charging port of the air suspension (51).
2. Braking energy recovery system facing air suspension energy storage and regulation according to claim 1, characterized in that the brake master cylinder (19) is provided with a brake piston (20) at its end, the brake piston (20) being connected to a brake pedal (21); the brake master cylinder (19) is arranged inside the liquid storage chamber (22).
3. Braking energy recovery system facing air suspension energy storage and regulation according to claim 1, characterized in that said air reservoir (3) is also provided with a pressure relief valve.
4. A control method of an air suspension energy storage and adjustment oriented braking energy recovery system according to any one of claims 1-3, comprising determining a braking mode of a vehicle provided with an air suspension energy storage and adjustment oriented braking energy recovery system, air suspension energy storage and adjustment;
the braking mode is divided into a slight braking mode and a normal braking mode according to whether the oil pressure value of the brake master cylinder exceeds a preset oil pressure value;
when the braking mode is a slight braking mode, braking hydraulic oil passes through a first three-way electromagnetic valve (24) and enters the hydraulic clutch (13) after being pressurized by a pressurizing electromagnetic valve (25), so that the hydraulic clutch (13) is closed, and the braking hydraulic oil is discharged from the hydraulic clutch (13) and then returns to the braking master cylinder (19) to realize braking;
when the braking mode is the normal braking mode, braking hydraulic oil passes through the first three-way electromagnetic valve (24), a part of hydraulic oil enters the hydraulic clutch (13) to enable the hydraulic clutch (13) to be closed, the braking hydraulic oil is discharged from the hydraulic clutch (13) and then returns to the brake master cylinder (19), and the other part of hydraulic oil enters the brake (18) after passing through the first three-way electromagnetic valve (24) to realize normal braking of the brake (18).
5. The control method according to claim 4, wherein the slight braking mode is set when the oil pressure value of the master cylinder does not exceed a preset oil pressure value; and when the oil pressure value of the brake master cylinder exceeds a preset oil pressure value, the brake master cylinder is in a normal braking mode.
6. The control method according to claim 4, wherein the air suspension energy storage process is specifically:
when the air pressure value in the air storage chamber (3) exceeds a safety limit value, the electronic control unit ECU (1) controls the second one-way electromagnetic valve (27) to be electrified and closed, and the second three-way electromagnetic valve (30) is electrified, so that the second three-way electromagnetic valve (30) is connected with the atmosphere, the air generated by the air pump device (11) is discharged into the atmosphere, and the air supply to the air storage chamber (3) is stopped;
when the air pressure value of the air storage chamber (3) does not exceed the safety limit value, the electronic control unit ECU (1) controls the second one-way electromagnetic valve (27) to be powered off and turned on, the second three-way electromagnetic valve (30) to be powered off and turned on, and air generated by the air pump device (11) enters the air storage chamber (3) and continuously supplies air to the air storage chamber (3).
7. The control method according to claim 4, wherein the air suspension adjustment process is specifically:
when the acceleration of the vehicle body does not exceed the preset acceleration, the electronic control unit ECU (1) controls the fourth one-way electromagnetic valve (31) to be closed in a power-off mode, the first one-way electromagnetic valve (4) to be closed in a power-off mode, the air pump device (11) and the air storage chamber (3) do not output air to the air suspension (51), and the air pressure of the air suspension (51) is not regulated;
when the acceleration of the vehicle body exceeds the preset acceleration, further judging whether the air pressure value in the air storage chamber (3) is lower than a preset low air pressure value, if the air pressure value in the air storage chamber is lower than the preset low air pressure value, controlling the first one-way electromagnetic valve (4) to be electrified and conducted, the second one-way electromagnetic valve (27) to be electrified and closed, the fourth one-way electromagnetic valve (31) to be electrified and conducted, the second three-way electromagnetic valve (30) to be electrified and conducted, and the air suspension control valve (6) to be electrified and conducted, wherein the air pump device (11) and the air storage chamber (3) jointly output air to the air suspension (51), and the air pump device (11) directly outputs air to the air suspension (51) but not to the air storage chamber (3), and finally improving the air pressure value of the air suspension (51); if the air pressure value in the air storage chamber (3) is not lower than a preset low air pressure value, the electronic control unit ECU (1) controls the first one-way electromagnetic valve (4) to be electrified and conducted, the second one-way electromagnetic valve (27) to be powered and conducted, the fourth one-way electromagnetic valve (31) to be powered and closed, the air suspension control valve (6) to be electrified and conducted, the air storage chamber (3) outputs air to the air suspension (51), the air pump device (11) continuously supplies air to the air storage chamber (3) without directly outputting air to the air suspension (51), and finally, the air storage chamber (3) is only used for leading the air suspension (51) to output air, so that the air pressure value of the air suspension (51) is improved.
8. A control method according to claim 6 or 7, characterized in that when the air reservoir (3) is in a low-pressure state, the air generated by the air compressor (28) enters the air reservoir (3) so that the air pressure value of the air reservoir (3) is restored to above the low-pressure value; in the low air pressure state, when the acceleration of the vehicle body does not exceed a preset acceleration value, the second one-way electromagnetic valve (27) and the second three-way electromagnetic valve (30) are consistent with the state when the safety limit value is not exceeded; otherwise, the second one-way electromagnetic valve (27) is powered on and closed, and the second three-way electromagnetic valve (30) is powered off and on.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110535066.0A CN113212092B (en) | 2021-05-17 | 2021-05-17 | Braking energy recovery system for air suspension energy storage and adjustment and control method |
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| CN202110535066.0A CN113212092B (en) | 2021-05-17 | 2021-05-17 | Braking energy recovery system for air suspension energy storage and adjustment and control method |
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| CN115366597B (en) * | 2022-07-11 | 2024-03-22 | 东风柳州汽车有限公司 | Energy feedback air suspension system and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3725620A1 (en) * | 1987-08-03 | 1989-02-23 | Klaue Hermann | Electric drive and brake system for combination motor vehicle - has microprocessor controlling electric motors powered by oscillatory piston engine-generator |
| KR19990028667U (en) * | 1997-12-27 | 1999-07-15 | 정몽규 | Automotive Air Brake |
| EP2058187A2 (en) * | 2007-11-12 | 2009-05-13 | Haldex Brake Products GmbH | Handbrake for a control system for vehicle trailers with operating brake, handbrake and air suspension |
| CN105346349A (en) * | 2015-11-19 | 2016-02-24 | 江苏大学 | Energy recycling system and method for air suspension |
| CN105799667A (en) * | 2016-03-18 | 2016-07-27 | 江苏大学 | High-low pressure tank air suspension automobile braking energy recovery and regeneration system and control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1651492B1 (en) * | 2003-07-28 | 2008-03-05 | WABCO GmbH | Electronic compressed air system |
-
2021
- 2021-05-17 CN CN202110535066.0A patent/CN113212092B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3725620A1 (en) * | 1987-08-03 | 1989-02-23 | Klaue Hermann | Electric drive and brake system for combination motor vehicle - has microprocessor controlling electric motors powered by oscillatory piston engine-generator |
| KR19990028667U (en) * | 1997-12-27 | 1999-07-15 | 정몽규 | Automotive Air Brake |
| EP2058187A2 (en) * | 2007-11-12 | 2009-05-13 | Haldex Brake Products GmbH | Handbrake for a control system for vehicle trailers with operating brake, handbrake and air suspension |
| CN105346349A (en) * | 2015-11-19 | 2016-02-24 | 江苏大学 | Energy recycling system and method for air suspension |
| CN105799667A (en) * | 2016-03-18 | 2016-07-27 | 江苏大学 | High-low pressure tank air suspension automobile braking energy recovery and regeneration system and control method |
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