CN113212092A - Braking energy recovery system for air suspension energy storage and adjustment and control method thereof - Google Patents
Braking energy recovery system for air suspension energy storage and adjustment and control method thereof Download PDFInfo
- Publication number
- CN113212092A CN113212092A CN202110535066.0A CN202110535066A CN113212092A CN 113212092 A CN113212092 A CN 113212092A CN 202110535066 A CN202110535066 A CN 202110535066A CN 113212092 A CN113212092 A CN 113212092A
- Authority
- CN
- China
- Prior art keywords
- air
- electromagnetic valve
- way electromagnetic
- braking
- suspension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 130
- 238000004146 energy storage Methods 0.000 title claims abstract description 31
- 238000011084 recovery Methods 0.000 title claims abstract description 29
- 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 29
- 239000007788 liquid Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000033228 biological regulation Effects 0.000 claims description 6
- 230000003750 conditioning effect Effects 0.000 claims 6
- 238000005086 pumping Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 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
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- 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, wherein energy generated during vehicle braking is converted into driving force of an air pump device through a gear train and a hydraulic clutch, so that air pumping and exhausting are realized, air is conveyed to an air storage chamber to realize energy storage, air is reserved for air suspension adjustment, and the air generated by the air pump device can be directly used for improving the air pressure value of the air suspension to realize air suspension adjustment so as to inhibit the nodding action during vehicle braking; the vehicle is provided with a braking energy recovery system facing air suspension energy storage and adjustment, 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 circuit, so that the braking energy recovery of the vehicle is realized by utilizing the air pump device, and the energy storage and adjustment facing the air suspension are finally realized by controlling each electromagnetic valve.
Description
Technical Field
The invention belongs to the technical field of braking energy recovery and air suspension, and particularly relates to an air suspension energy storage and adjustment oriented braking energy recovery system and a control method thereof.
Background
The braking energy recovery system recovers excess energy released by the vehicle during braking or coasting, converts the excess energy into electric energy through the generator, and then stores the electric energy in the storage battery for later acceleration driving or converts the electric energy into other available energy for further utilization. The recovery of braking energy 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 hybrid vehicles.
The air suspension is also called adjustable suspension, and because an inflatable air pressure device is added on the suspension, the height and hardness of the suspension can be adjusted according to different road conditions. Traditional air suspension air pressure adjusting parts are more, and occupy a part of the space of an automobile, and innovatively changing the air suspension air pressure adjusting parts has certain significance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an air suspension energy storage and regulation oriented braking energy recovery system and a control method thereof, which utilize the characteristics of a hydraulic clutch to ensure that the process of recovering and reusing braking mechanical energy is realized only during braking, the normal driving of a vehicle is not influenced, fewer electrical elements are used, and the additional electric energy consumption can be avoided to a certain extent.
The present invention achieves the above-described object by the following technical means.
Air suspension energy storage and regulation oriented braking energy recovery system comprises:
the brake master cylinder is connected with the liquid outlet of the brake master cylinder and the brake, and the brake is connected with the liquid inlet of the brake master cylinder; the first three-way electromagnetic valve is also connected with the hydraulic clutch, a boosting 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 and 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 an air storage chamber, the air storage chamber is also connected with an air compressor, and a third one-way electromagnetic valve is arranged on a pipeline connected with the air compressor; an air pressure sensor is arranged on the air storage chamber;
and the electronic control unit ECU is respectively in signal connection with a first three-way electromagnetic valve, a booster electromagnetic valve, an air compressor, a third one-way electromagnetic valve, a second three-way electromagnetic valve, a fourth one-way electromagnetic valve, an air pressure sensor, an oil pressure sensor, a first one-way electromagnetic valve, a second one-way electromagnetic valve, an air suspension control valve and an air pressure sensor of an air suspension.
In the technical scheme, the air suspension is arranged in the air suspension system, the number of the air suspension systems and the number of the air pump devices are two, and the two air suspension systems and the two air pump devices are symmetrically arranged around the front and rear axes of the vehicle.
In the technical scheme, the brake piston is arranged at the tail end of the brake master cylinder and connected to the 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 above technical scheme, the gas storage chamber is further provided with a pressure release valve.
A control method for a braking energy recovery system for air suspension energy storage and adjustment comprises the steps of determining a braking mode of a vehicle provided with the braking energy recovery system for 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 or not;
when the braking mode is a slight braking mode, the braking hydraulic oil passes through the first three-way electromagnetic valve, is pressurized by the pressurization electromagnetic valve and then 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 main cylinder to realize braking;
when the braking mode is the normal braking mode, the brake hydraulic oil passes through the first three-way electromagnetic valve, a part of the hydraulic oil enters the hydraulic clutch to close the hydraulic clutch, the brake hydraulic oil is discharged from the hydraulic clutch and then returns to the brake main cylinder, and the other part of the hydraulic oil passes through the first three-way electromagnetic valve and then enters the brake, so that the normal braking of the brake is realized.
Further, when the oil pressure value of the brake master cylinder does not exceed the preset oil pressure value, the light braking mode is adopted; when the oil pressure value of the brake master cylinder exceeds the preset oil pressure value, the normal braking mode is set.
Further, the process of the air suspension for storing energy 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 to be electrified, so that the second three-way electromagnetic valve is connected with the atmosphere, the gas generated by the gas pump device is discharged into the atmosphere, and the gas 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 switched on, the second three-way electromagnetic valve to be powered off and switched 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 includes:
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 closed in a power-off mode and the first one-way electromagnetic valve to be closed in a power-off mode, 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 adjusted;
when the acceleration of the vehicle body exceeds the preset acceleration, whether the air pressure value in the air storage chamber is lower than a preset low air pressure value or not is further judged, if the air pressure value in the air storage chamber is lower than the preset low air pressure value, the electronic control unit ECU controls the first one-way solenoid valve to be powered on and switched off, the second one-way solenoid valve to be powered on and switched off, the fourth one-way solenoid valve to be powered on and switched off, the second three-way solenoid valve to be powered on and switched on, the air pump device and the air storage chamber output air to the air suspension, the air pump device directly outputs air to the air suspension instead of the air storage chamber, and finally the air pressure value of the; 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 solenoid valve to be powered on, the second one-way solenoid valve to be powered off, the fourth one-way solenoid valve to be powered off and the air suspension control valve to be powered on, air is output to the air suspension only through the air storage chamber, the air pump device continues to supply air to the air storage chamber, air is not output to the air suspension directly, and finally air is output to the air suspension 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-air-pressure state, 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 higher than the low-air-pressure value; under the low-air-pressure state, when the acceleration of the vehicle body does not exceed a preset acceleration value, the states of the second one-way electromagnetic valve and the second three-way electromagnetic valve are consistent with the states when the acceleration of the vehicle body does not exceed a safety limit value; otherwise, the second one-way electromagnetic valve is powered on and closed, and the second three-way electromagnetic valve is powered off and switched on.
The invention has the beneficial effects that:
the energy generated during vehicle braking is converted into the driving force of the air pump device through the gear train and the hydraulic clutch, so that air pumping and exhausting are realized, air is conveyed to the air storage chamber to realize energy storage, the air is reserved for air suspension adjustment, and the air generated by the air pump device can be directly used for improving the air pressure value of the air suspension to realize the adjustment of the air suspension, so that the nodding action during vehicle braking is inhibited; the vehicle is provided with a braking energy recovery system facing to the energy storage and adjustment of the air suspension, the braking is divided into a slight braking mode and a normal braking mode, and when the braking mode is the slight braking mode, the vehicle recovers the braking energy and acts on an 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 the braking energy and acts on the air pump device so as to consume part of mechanical energy, and meanwhile, normal braking of the brake is realized, and the braking effect of the vehicle is improved to a certain extent. The method specifically 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 air pumping and exhausting, and the air is conveyed to the air storage chamber to realize energy storage; the invention converts the brake inertia into the driving energy of the air pump device through less transmission parts, reduces the energy conversion rate and energy loss, and improves the energy utilization rate;
(2) the invention can adjust the air suspension through the air storage chamber, also can directly adjust the air suspension through the air pump device, and realizes the inhibition of the nodding action of each electromagnetic valve in the air path when braking the vehicle by utilizing the electronic control unit ECU;
(3) the invention can realize different braking modes by controlling the valve in the hydraulic oil circuit, convert the energy during braking into the energy for driving the air pump device to realize slight braking, and can improve the braking effect to a certain extent while realizing energy recovery.
Drawings
FIG. 1 is a schematic structural diagram of a braking energy recovery system for air suspension energy storage and regulation according to the present invention;
FIG. 2 is a schematic structural diagram of the air pump device according to the present invention;
FIG. 3 is a schematic diagram of signal processing and transmission according to the present invention;
FIG. 4 is a flow chart of the electronic control of the hydraulic circuit to achieve different braking modes according to the present invention;
FIG. 5 is a flow chart of the air circuit electronic control for realizing energy storage of the air suspension according to the present invention;
FIG. 6 is a flow chart of the air circuit electronic control for adjusting the air suspension according to the present invention;
in the figure, 1-an electronic control unit ECU, 2-an air pressure sensor, 3-an air reservoir, 4-a first one-way solenoid valve, 5-an air suspension system, 6-an air suspension control valve, 7-an air compression unit, 8-an air cleaner, 9-an axle housing, 10-an axle, 11-an air pump device, 12-an air pump driving crankshaft, 13-a hydraulic clutch, 14-an air pump driving shaft, 15-a driving gear, 16-a driven gear, 17-a brake disc, 18-a brake, 19-a brake master cylinder, 20-a brake piston, 21-a brake pedal, 22-a reservoir, 23-an oil pressure sensor, 24-a first three-way solenoid valve, 25-a booster solenoid valve, 26-a normally open one-way valve, 27-a second one-way solenoid valve, 28-air compressor, 29-third one-way solenoid valve, 30-second three-way solenoid valve, 31-fourth one-way solenoid valve, 51-air suspension, 111-air inlet, 112-air outlet.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, 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 regulation comprises a brake pedal 21, a brake piston 20, a brake master cylinder 19, a normally open one-way valve 26, a hydraulic clutch 13, a driving gear 15, a driven gear 16, an axle 10, an axle housing 9, an air pump driving shaft 14, an air pump driving crankshaft 12, an air pump device 11, an air storage chamber 3, an air suspension system 5, an electronic control unit ECU1, a vehicle acceleration sensor 33 and an oil pressure sensor 23. The air suspension system 5 and the air pump device 11 in the braking energy recovery system facing the air suspension energy storage and adjustment are arranged in two, the two air suspension systems 5 and the two air pump devices 11 are symmetrically arranged around the front and rear axes of the vehicle, and the air pump devices 11 are positioned at the front parts of the air suspension systems 5 in the advancing direction of the vehicle; two air pump devices 11 are arranged 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.
A brake piston 20 is connected to a brake pedal 21, the tail end of the brake piston 20 is arranged in a brake master cylinder 19, the brake master cylinder 19 is arranged in a liquid storage chamber 22, and an oil pressure sensor 23 is arranged in the brake master cylinder 19; a 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 the brake 18 through a pipeline, and the brake 18 is connected with a 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 booster 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 one-way 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 only engaged with the oil passage of the hydraulic clutch 13; when the first three-way solenoid valve 24 is energized, the first three-way solenoid valve 24 is simultaneously engaged with the oil passages of the hydraulic clutch 13 and the brake 18. When a vehicle provided with a braking energy recovery system for storing and adjusting energy for an air suspension 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, and the hydraulic clutch 13 is engaged while the air pump drive shaft 14 is engaged with the air pump drive crankshaft 12.
The drive gear 15 is splined to the axle 10, the axle 10 is disposed in the axle housing 9, the driven gear 16 is splined to the air pump drive shaft 14, the drive gear 15 is meshed with the driven gear 16, and the drive gear 15 transmits the rotation of the axle 10 to the air pump drive shaft 14 through the driven gear 16. The air pump drive shaft 14 is engaged with the air pump drive crankshaft 12 via a hydraulic clutch 13, and the air pump drive crankshaft 12 is fixed inside the housing of the air pump device 11 via a bearing and connected with the air pump device 11. Referring to fig. 2, the top of the air pump device 11 is provided with an air inlet 111, the side surface thereof is provided with an air outlet 112, and the air outlet 112 is respectively connected with the second three-way electromagnetic valve 30 and the fourth one-way electromagnetic valve 31 through pipes; 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 used for storing energy for the air suspension 51; the second three-way electromagnetic valve 30 is also communicated with the atmosphere; the second one-way electromagnetic valve 27 is respectively connected with the air storage chamber 3 and an air inflation port of the air suspension 51 through pipelines, 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 inflation port of the air suspension 51 is sequentially provided with the air suspension control valve 6, the air compression unit 7 and the air filter 8 for realizing the adjustment of the air suspension 51, and the air suspension 51 is also connected with the air storage chamber 3 through a pipeline; the air storage chamber 3 is also connected with an 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 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, respectively.
The vehicle body provided with the braking energy recovery system for air suspension energy storage and adjustment is also provided with an acceleration sensor which is in signal connection with the electronic control unit ECU 1.
As shown in fig. 3, the ECU1 of the electronic control unit is provided with a signal processing module, a judgment module and an output module, the air pressure sensor 2 collects the air pressure value in the air reservoir 3, the oil pressure sensor collects the oil pressure value in the brake master cylinder 19, the acceleration sensor obtains the acceleration value of the vehicle body, the collected signals are sent to the signal processing module, the judgment module judges whether the air pressure value in the air reservoir, the oil pressure value in the brake master cylinder and the acceleration value of the vehicle body exceed preset values, and therefore the signals are transmitted to the corresponding solenoid valve and the air suspension control valve 6 through the output module, and different braking modes are realized through the on-off of the solenoid valve and the air suspension control valve 6.
The control method of the braking energy recovery system for air suspension energy storage and adjustment comprises the steps of determining a vehicle braking mode (a slight braking mode and a normal braking mode) and air suspension energy storage and adjustment, and specifically comprises the following steps:
as shown in fig. 4, the vehicle brake mode provided with the air suspension energy storage and regulation oriented brake energy recovery system is divided into a light brake mode and a normal brake mode according to whether the oil pressure value of the brake 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 mode is a light brake mode; when the oil pressure value of the brake master cylinder exceeds the preset oil pressure value, the normal braking mode is set. When the braking mode is a slight braking mode, the braking hydraulic oil passes through the first three-way electromagnetic valve 24, is pressurized by the pressurization electromagnetic valve 25 and then enters the hydraulic clutch 13, 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 main 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 to consume mechanical energy to realize braking; when the braking mode is a normal braking mode, brake hydraulic oil passes through the first three-way electromagnetic valve 24, a part of the hydraulic oil enters the hydraulic clutch 13 through the booster electromagnetic valve 25 (the booster electromagnetic valve 25 does not boost the hydraulic oil in the mode), so that the hydraulic clutch 13 is closed, the part of the brake 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 the 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 perform braking together. The light braking mode only consumes mechanical energy by the movement of the air pump device 11 to realize the braking deceleration of the vehicle, and the normal braking mode consumes mechanical energy by the movement of the air pump device 11 and performs normal braking by the brake 18 to finally realize the braking of the vehicle.
As shown in fig. 5, when the air pressure value in the air reservoir 3 exceeds the safety limit value, the electronic control unit ECU1 controls the second one-way solenoid valve 27 to be turned on and off and the second three-way solenoid valve 30 to be turned on, so that the second three-way solenoid valve 30 is connected to the atmosphere, the air generated by the air pump device 11 is discharged into the atmosphere, the air supply to the air reservoir 3 is stopped, and the pressure is released through the pressure release valve, thereby ensuring safety; 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 solenoid valve 27 to be powered off and switched on, the second three-way solenoid valve 30 is connected with the pipeline of the air storage chamber 3, and the 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-pressure limit value, when the air pressure value in the air storage chamber 3 is smaller than the low-pressure limit value, the air storage chamber 3 is judged to be in a low-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 gas generated by the air compressor 28 enters the air storage chamber 3, and the air pressure value in the air storage chamber 3 is recovered to be higher than the low-pressure value; in a low-air-pressure state, when the acceleration of the vehicle body does not exceed a preset acceleration value, the states of the second one-way electromagnetic valve 27 and the second three-way electromagnetic valve 30 are consistent with the states when the safety limit value is not exceeded; otherwise, the second one-way solenoid valve 27 is turned off and the second three-way solenoid valve 30 is turned off.
As shown in fig. 6, the electronic control unit ECU1 receives the signals of the vehicle acceleration sensor 33 and the air pressure sensor 2, and first determines whether the acceleration of the vehicle body 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 solenoid valve 31 to be powered off and closed and the first one-way solenoid valve 4 to be powered off and closed, under the condition, the gas in the gas pump device 11 does not enter the air suspension 51 through the fourth one-way solenoid valve 31, the air suspension control valve 6, the air compression unit 7 and the air filter 8 along the pipeline, the gas in the gas storage chamber 3 does not enter the air suspension 51 through the first one-way solenoid valve 4, the air suspension control valve 6, the air compression unit 7 and the air filter 8 along the pipeline, the gas pump device 11 and the gas storage chamber 3 do not output gas to the air suspension 51, and the air pressure of the air suspension 51 is not adjusted; when the acceleration of the vehicle body exceeds the preset acceleration, whether the air pressure value in the air storage chamber 3 is lower than the preset low air pressure value or not is further judged, if the air pressure value in the air storage chamber is lower than the preset low air pressure value, the electronic control unit ECU1 controls the first one-way electromagnetic valve 4 to be powered on, the second one-way electromagnetic valve 27 to be powered off, the fourth one-way electromagnetic valve 31 to be powered on, the second three-way electromagnetic valve 30 to be powered off and on, and the air suspension control valve 6 to be powered on, the air in the air pump device 11 and 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 pump device 11 and the air storage chamber 3 output air to the air suspension 51 together, wherein the air pump device 11 directly outputs air to the air suspension 51 without outputting air to the air storage chamber 3, finally the air pressure value of the air suspension 51 is improved, and the vehicle body adjusts the air suspension 51 to adjust the posture, restraining nodding action when a vehicle is braked; 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 powered on, the second one-way electromagnetic valve 27 to be powered off and switched on, the fourth one-way electromagnetic valve 31 to be powered off and switched off, the air suspension control valve 6 to be powered on and switched on, 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, only the air storage chamber 3 outputs air to the air suspension 51, the air pump device 11 continues to supply air to the air storage chamber 3 without directly outputting air to the air suspension 51, and finally the air is led to the air suspension 51 through the air storage chamber 3 to output air, so that the air pressure value of the air suspension 51 is improved, the air suspension 51 is further adjusted to adjust the posture of the vehicle body, and the head-nodding action during the braking of the vehicle is inhibited.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. Braking energy recovery system towards air suspension energy storage and regulation, its characterized in that includes:
the brake system comprises a brake main cylinder (19), wherein a liquid outlet of the brake main 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 a liquid inlet of the brake main cylinder (19); the first three-way electromagnetic valve (24) is also connected with the hydraulic clutch (13), a boosting 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 an 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);
the air pump device (11), the air pump device (11) is provided with an air inlet (111) and an air outlet (112); 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 second one-way electromagnetic valve (27) is connected with the air storage chamber (3) and an air inflation inlet of the air suspension (51), 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 inflation inlet of the air suspension (51); the air suspension (51) is also connected with an air storage chamber (3), the air storage chamber (3) is also connected with an air compressor (28), and a pipeline connected with the air compressor (28) is provided with a third one-way electromagnetic valve (29); the air storage chamber (3) is provided with an air pressure sensor (2);
and the electronic control unit ECU (1) is respectively in signal connection with the air pressure sensors of 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 suspension (51).
2. Air suspension energy storage and conditioning oriented braking energy recovery system according to claim 1, characterized in that the air suspension (51) is located in an air suspension system (5), two air suspension systems (5) and two air pump devices (11) are provided, and two air suspension systems (5) and two air pump devices (11) are provided symmetrically with respect to the vehicle front-rear axis.
3. Air suspension energy storage and conditioning oriented braking energy recovery system according to claim 1, characterized in that the braking master cylinder (19) is provided with a braking piston (20) at the end, the braking piston (20) being connected to a braking pedal (21); the master cylinder (19) is disposed inside the reservoir (22).
4. An air suspension energy storage and conditioning oriented braking energy recovery system according to claim 1, characterized in that an air compression unit (7) and an air filter (8) are also provided between the air suspension control valve (6) and the air suspension (51) inflation inlet.
5. Air suspension energy storage and modulation oriented braking energy recovery system according to claim 1, characterized in that a pressure relief valve is also provided on the air reservoir (3).
6. A control method for an air suspension energy storage and conditioning oriented braking energy recovery system according to any of claims 1-5, characterized by comprising determining the braking mode, air suspension energy storage and conditioning of a vehicle provided with an air suspension energy storage and conditioning oriented braking energy recovery system;
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 or not;
when the braking mode is a slight braking mode, the brake hydraulic oil passes through the first three-way electromagnetic valve (24), is pressurized by the pressurization electromagnetic valve (25) and then enters the hydraulic clutch (13), so that the hydraulic clutch (13) is closed, and the brake hydraulic oil is discharged from the hydraulic clutch (13) and then returns to the brake master cylinder (19) to realize braking;
when the braking mode is the normal braking mode, brake hydraulic oil passes through the first three-way electromagnetic valve (24), a part of hydraulic oil enters the hydraulic clutch (13) to close the hydraulic clutch (13), the brake 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), so that the normal braking of the brake (18) is realized.
7. The control method according to claim 6, characterized in that a light brake mode is performed when the oil pressure value of the master cylinder does not exceed a preset oil pressure value; when the oil pressure value of the brake master cylinder exceeds the preset oil pressure value, the normal braking mode is set.
8. The control method according to claim 6, wherein the air suspension stores energy in a process that is specifically as follows:
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 powered on and off and the second three-way electromagnetic valve (30) to be powered on, so that the second three-way electromagnetic valve (30) is connected with the atmosphere, gas 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 switched on, the second three-way electromagnetic valve (30) to be powered off and switched 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).
9. The control method according to claim 6, characterized in that the process of air suspension adjustment is, in particular:
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 and 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 adjusted;
when the acceleration of the vehicle body exceeds the preset acceleration, whether the air pressure value in the air storage chamber (3) is lower than a preset low air pressure value or not is further judged, if the air pressure value in the air storage chamber is lower than the preset low air pressure value, the electronic control unit ECU (1) controls the first one-way electromagnetic valve (4) to be switched on in an electrified mode, the second one-way electromagnetic valve (27) to be switched off in an electrified mode, the fourth one-way electromagnetic valve (31) to be switched on in an electrified mode, the second three-way electromagnetic valve (30) to be switched on in a power-off mode, the air suspension control valve (6) to be switched on in an electrified mode, the air pump device (11) and the air storage chamber (3) output air to the air suspension (51) together, the air pump device (11) directly outputs air to the air suspension (51) but does not output air to the air storage chamber (3), and finally the air pressure value of the air suspension (51) is improved; 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 ECU (1) controls the first one-way electromagnetic valve (4) to be powered on, the second one-way electromagnetic valve (27) to be powered off and powered on, the fourth one-way electromagnetic valve (31) to be powered off and closed, the air suspension control valve (6) to be powered on and powered on, only the air storage chamber (3) outputs air to the air suspension (51), the air pump device (11) continues to supply air to the air storage chamber (3) and does not directly output air to the air suspension (51), and finally the air storage chamber (3) is only communicated with the air suspension (51) to output air, so that the air pressure value of the air suspension (51) is improved.
10. A control method according to claim 8 or 9, 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 above the low pressure value; under 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 acceleration of the vehicle body does not exceed a safety limit value; otherwise, the second one-way electromagnetic valve (27) is switched on and off, and the second three-way electromagnetic valve (30) is switched off and on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110535066.0A CN113212092B (en) | 2021-05-17 | 2021-05-17 | Braking energy recovery system for air suspension energy storage and adjustment and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110535066.0A CN113212092B (en) | 2021-05-17 | 2021-05-17 | Braking energy recovery system for air suspension energy storage and adjustment and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113212092A true CN113212092A (en) | 2021-08-06 |
| CN113212092B CN113212092B (en) | 2024-03-19 |
Family
ID=77092419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110535066.0A Active CN113212092B (en) | 2021-05-17 | 2021-05-17 | Braking energy recovery system for air suspension energy storage and adjustment and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113212092B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (6)
| 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 |
| US20070096554A1 (en) * | 2003-07-28 | 2007-05-03 | Carsten Detlefs | Electronic compressed air system |
| 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 |
-
2021
- 2021-05-17 CN CN202110535066.0A patent/CN113212092B/en active Active
Patent Citations (6)
| 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 |
| US20070096554A1 (en) * | 2003-07-28 | 2007-05-03 | Carsten Detlefs | Electronic compressed air system |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113212092B (en) | 2024-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102216134B (en) | Service brake control system for optimized regenerative braking of medium or heavy trucks | |
| JP5351256B2 (en) | Brake device for automobile, operation method thereof and hydraulic device | |
| CN102442286B (en) | Energy regeneration device of drive-by-wire braking system and control method of braking system | |
| CN100491153C (en) | Composite braking system for electric automobile | |
| US10272902B2 (en) | Brake control device | |
| CN103180188B (en) | For running method and the control equipment of the brakes being furnished with electric driver and/or rotor machine | |
| US9061672B2 (en) | Vehicle brake device and method of controlling vehicle brake device | |
| CN209410036U (en) | The commercial automobile-used integrated form air braking system of new energy and its vehicle | |
| JP2014073836A (en) | Brake device for automobile having pressure accumulator and operation method for the same | |
| CN202491793U (en) | Drive-by-wire brake system energy regeneration device | |
| JP5386043B2 (en) | Brake device for vehicle and control method thereof | |
| CN113525317A (en) | Braking system suitable for automatic driving and control method | |
| CN1931642A (en) | Pneumatically braking anti-lock brake system for mixed powered automobile | |
| CN103153724A (en) | Electric vehicle brake control device | |
| JP2023536787A (en) | BYPASS ACCUMULATOR USED IN ELECTROHYDRAULIC BRAKE SYSTEM AND CONTROL METHOD THEREOF | |
| CN212637472U (en) | Braking system with redundancy design | |
| CN114876652B (en) | Braking system and vehicle | |
| CN113212092A (en) | Braking energy recovery system for air suspension energy storage and adjustment and control method thereof | |
| WO2013115166A1 (en) | Vehicle brake device and method for controlling same | |
| CN113002508A (en) | Dual-motor redundant braking system with integrated pressure regulating unit and control method | |
| CN211107378U (en) | Hybrid braking backup system for new energy vehicle | |
| CN111775910A (en) | Brake system of new-energy commercial vehicle | |
| CN114954400B (en) | Electro-hydraulic braking mechanism, system and electro-hydraulic braking control method | |
| CN113264020B (en) | Multi-drive vacuum pump braking auxiliary system of pure electric automobile | |
| CN215436375U (en) | Dual-motor redundant brake system with integrated pressure regulating unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |