CN118124320A - Air suspension air circuit device and control method - Google Patents
Air suspension air circuit device and control method Download PDFInfo
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- CN118124320A CN118124320A CN202410453970.0A CN202410453970A CN118124320A CN 118124320 A CN118124320 A CN 118124320A CN 202410453970 A CN202410453970 A CN 202410453970A CN 118124320 A CN118124320 A CN 118124320A
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- 239000000725 suspension Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000006835 compression Effects 0.000 claims abstract description 103
- 238000007906 compression Methods 0.000 claims abstract description 103
- 230000001502 supplementing effect Effects 0.000 claims abstract description 76
- 239000013589 supplement Substances 0.000 claims description 15
- 230000002035 prolonged effect Effects 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 161
- 230000001276 controlling effect Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention discloses an air suspension air circuit device and a control method. The air suspension air circuit device comprises an air spring, a first air storage part, a second air storage part, a main air pipe, a branch air pipe, a first control switch and a second control switch; the output end of the first gas storage part, the first control switch, the second gas storage part and the input end of the first gas storage part are sequentially communicated through a main gas pipe; the air spring is communicated with a main pipeline air pipe between the first control switch and the second control switch through a branch pipeline; the gas pressure in the first gas storage portion is greater than the gas pressure in the second gas storage portion. The air compression device does not need to be started in the air spring air supplementing and exhausting process, and the starting frequency of the air compression device can be effectively reduced, so that the service life of the air compression device is prolonged. In addition, the air suspension air circuit device is simple in structure and can reduce the number of valve bodies in the air suspension air circuit.
Description
Technical Field
The embodiment of the invention relates to the technical field of automobiles, in particular to an air suspension air circuit device and a control method.
Background
An air suspension is a currently advanced automotive suspension system, and the principle of the air suspension system is to utilize the compressibility of air to realize the elastic function.
The existing passenger car or commercial car utilizes an air suspension air supply system to change the height of the car body and adjust the rigidity or damping of suspension, thereby improving the trafficability and comfort of the car. The air spring air bag of the air suspension air supply system needs to be filled with high-pressure air to support the vehicle, and the high-pressure air in the air spring air bag needs to be discharged when the height of the vehicle is reduced.
Air supply systems of air suspensions in the current market can be divided into an open type and a closed type. In the use process of the open air suspension, frequent air supplement and exhaust are needed from the air, and air is generally directly adopted as a gas medium; the closed air suspension does not need to supplement air and exhaust air in normal use, but the air compressor needs to be started in the processes of air supplement, exhaust air and the like of the existing closed air suspension, so that the air compressor is frequently started, and the service life is short. In addition, the existing closed air suspension has the problems of too complex air paths and too many valve bodies.
Disclosure of Invention
The invention provides an air suspension air circuit device and a control method, which are used for simplifying air suspension air circuits, reducing the number of valve bodies in the air suspension air circuits, effectively reducing the starting times of an air compressor and prolonging the service life of the air compressor.
In a first aspect, an embodiment of the present invention provides an air circuit device for an air suspension, including an air spring, a first air storage portion, a second air storage portion, a main air pipe, a branch air pipe, a first control switch and a second control switch;
The output end of the first gas storage part, the first control switch, the second gas storage part and the input end of the first gas storage part are sequentially communicated through the main gas pipe; the air spring is communicated with a main pipeline air pipe between the first control switch and the second control switch through the branch pipeline air pipe; the first gas storage part is used for supplementing the air spring through the first control switch in an air spring air supplementing mode; the second gas storage part is used for storing the gas released by the air spring through the second control switch in the air spring gas release mode; the gas pressure in the first gas storage portion is greater than the gas pressure in the second gas storage portion.
Further, the device further comprises:
the first pressure sensor is positioned at the output end of the first gas storage part and is used for detecting a first pressure value of the output end of the first gas storage part;
the second pressure sensor is positioned in the tank body of the second gas storage part and is used for detecting a second pressure value of the second gas storage part;
The air compression device is positioned on the main pipeline air pipe between the second air storage part and the input end of the first air storage part, and is used for adjusting the pressure of the first air storage part and the second air storage part in an air circuit air supplementing mode when the first pressure value is lower than a first preset value and/or the second pressure value is higher than a second preset value.
Further, the device also comprises an air supplementing and exhausting port, an air supplementing and exhausting pipe and a third control switch;
the third control switch is located on the pipeline of the air supplementing and exhausting air pipe, and is used for controlling the conducting state of the air supplementing and exhausting air pipe, and the air supplementing and exhausting port is communicated with the main pipeline air pipe between the second control switch and the second air storage part through the air supplementing and exhausting air pipe.
Further, the one-way valve is located on the main air pipe between the input end of the first air storage part and the air compression device, and the conducting direction of the one-way valve is that the air compression device points to the input end of the first air storage part.
Further, the device also comprises an electromagnetic valve, wherein the electromagnetic valve is positioned on the bypass air pipe and is used for controlling the conduction state of the bypass air pipe.
Further, the air springs comprise a plurality of branch air pipes, each air spring is communicated with a main air pipe between the first control switch and the second control switch through one branch air pipe;
The electromagnetic valves comprise a plurality of electromagnetic valves, and each bypass air pipe is provided with one electromagnetic valve.
In a second aspect, an embodiment of the present invention further provides a method for controlling an air circuit device of an air suspension, where the method is used for controlling the air circuit device of the air suspension in the embodiment of the present invention, and the method includes:
In an air spring air supplementing mode, a first control switch is controlled to be turned on, an air compression device and a second control switch are controlled to be turned off, and a first air storage part supplements air for the air spring through the first control switch and a branch air pipe;
And in the air spring deflation mode, the second control switch is controlled to be turned on, the air compression device and the first control switch are controlled to be turned off, and the second air storage part stores the air released by the air spring.
Further, the air suspension air circuit device further comprises an air compression device, a first pressure sensor and a second pressure sensor, wherein the first pressure sensor is positioned at the output end of the first air storage part and is used for detecting a first pressure value of the output end of the first air storage part; the second pressure sensor is positioned in the tank body of the second gas storage part and is used for detecting a second pressure value of the second gas storage part; the air compression device is located on the main air pipe between the second air storage portion and the input end of the first air storage portion, and the method further comprises:
acquiring the first pressure value and the second pressure value, and controlling the first control switch and the second control switch to be closed and controlling the air compression device to be opened in a gas circuit air supplementing mode when the first pressure value is lower than a first preset value and/or the second pressure value is higher than a second preset value, wherein the air compression device compresses the gas of the second gas storage part and pumps the compressed gas into the first gas storage part.
Further, the air suspension air circuit device also comprises an air supplementing and exhausting port, an air supplementing and exhausting air pipe and a third control switch; the third control switch is located on a pipeline of the air supplementing and exhausting air pipe, the air supplementing and exhausting opening is communicated with the main pipeline air pipe between the second control switch and the second air storage part through the air supplementing and exhausting air pipe, and the method further comprises:
And under the air circuit air supplementing mode, when the first pressure value is lower than a first preset value and/or the second pressure value is higher than a second preset value, the third control switch is controlled to be opened, so that the air supplementing and the air sucked by the air outlet are output to the second air storage part.
Further, the air suspension air circuit device further comprises a one-way valve, the one-way valve is positioned on the main air circuit pipe at the input end of the first air storage part, and the conduction direction of the one-way valve points to the input end of the first air storage part from the air compression device; the method further comprises the steps of:
And under the air circuit air supplementing mode, when the first pressure value is lower than a first preset value and/or the second pressure value is higher than a second preset value, the third control switch is controlled to be opened, so that the air supplementing and the air sucked by the air outlet are output to the second air storage part.
The invention provides an air suspension air circuit device, wherein an output end of a first air storage part, a first control switch, a second air storage part and an input end of the first air storage part in the air suspension air circuit device are sequentially communicated through a main air pipe; the air spring is communicated with a main pipeline air pipe between the first control switch and the second control switch through a branch pipeline; wherein the gas pressure in the first gas storage portion is greater than the gas pressure in the second gas storage portion. In the air spring air supplementing mode, the first air storage part supplements air for the air spring through the first control switch, and when the first air storage part is provided with air, an air compression device in the air circuit device of the air suspension is not required to be started to supplement air for the air spring; in the air spring deflation mode, the second air storage part stores the air released by the air spring through the second control switch, and when the second air storage part has a storage space, the air compression device is not required to be started to process the air released by the air spring; therefore, the starting frequency of the air compression device can be effectively reduced, and the service life of the air compression device is prolonged. In addition, the air suspension air circuit device is simple in structure and can reduce the number of valve bodies in the air suspension air circuit.
Drawings
Fig. 1 is a schematic structural diagram of an air circuit device of an air suspension according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of another air circuit device for an air suspension according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a control method of an air circuit device of an air suspension according to an embodiment of the present invention.
Fig. 4 is a schematic conduction diagram of an air circuit device of an air suspension in an air spring air supplementing mode according to an embodiment of the present invention.
Fig. 5 is a schematic conducting diagram of an air suspension air circuit device in an air spring deflation mode according to an embodiment of the present invention.
Fig. 6 is a schematic conduction diagram of an air circuit device of an air suspension in an air circuit air supply mode according to an embodiment of the present invention.
Fig. 7 is a schematic conduction diagram of another air suspension air circuit device in an air circuit air supply mode according to an embodiment of the present invention.
Fig. 8 is a schematic conducting diagram of an air suspension air circuit device in an air circuit exhaust mode according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Fig. 1 is a schematic structural diagram of an air circuit device for an air suspension, which is provided in an embodiment of the present invention, as shown in fig. 1, the device includes an air spring 105, a first air storage portion 101, a second air storage portion 102, a main air pipe 104, a branch air pipe 106, a first control switch V1 and a second control switch V2; the output end of the first gas storage part 101, the first control switch V1, the second control switch V2, the second gas storage part 102 and the input end of the first gas storage part 101 are sequentially communicated through a main gas pipe 104; the air spring 105 is communicated with a main air pipe 104 between the first control switch V1 and the second control switch V2 through a branch air pipe 106; the first air storage part 101 is used for supplementing air to the air spring 105 through the first control switch V1 in the air spring air supplementing mode; the second air storage part 102 is used for storing air discharged by the air spring 105 through the second control switch V2 in the air spring air discharging mode; the gas pressure in the first gas storage portion 101 is greater than the gas pressure in the second gas storage portion 102.
The first gas storage portion 101 stores the gas compressed by the air compression device 103, the first gas storage portion 101 may be a high-pressure gas storage tank, and the second gas storage portion 102 may be a low-pressure gas storage tank, that is, the gas pressure in the first gas storage portion 101 is greater than the gas pressure in the second gas storage portion 102. The air springs 105 may include a plurality of air springs corresponding to different portions of the vehicle in which the air suspension air circuit device is located. The first control switch V1 and the second control switch V2 may be electromagnetic control valves, and the first control switch V1 and the second control switch V2 may both control on and off of the main gas pipe 104 where they are located. The gas in the air suspension gas circuit device can be selected to be stable, such as nitrogen, and the stability of the system can be improved. The output end of the first air storage part 101, the first control switch V1, the second control switch V2, the second air storage part 102, the air compression device 103 and the input end of the first air storage part 101 are sequentially communicated through the main air pipe 104, that is, the air suspension air circuit device in this embodiment is a closed air suspension air circuit.
Specifically, in the air spring air supplementing mode, the first control switch V1 is turned on, the air compression device 103 and the second control switch V2 are turned off, and the compressed air in the first air storage portion 101 supplements air for the air spring 105 through the first control switch V1 and the branch air pipe 106, so that the air supplementing process of the air spring 105 can be completed without starting the air compression device 103 in the air spring air supplementing mode. In the air spring deflation mode, the second control switch V2 is opened, the air compression device 103 and the first control switch V1 are closed, gas in the air spring 105 is released to the branch gas pipe 106, the gas is discharged to the main gas pipe 104 from the branch gas pipe 106, the second gas storage part 102 positioned on the main gas pipe 104 stores the gas released by the air spring 105, and the gas released by the air spring 105 does not need to be compressed immediately through the air compression device 103 and is discharged to the first gas storage part 101 due to the existence of the second gas storage part 102, so that the process of exhausting the air spring 105 can be completed without starting the air compression device 103 in the air spring exhaustion mode. When the pressure of the gas supplied to the first gas storage portion 101 is too low or the pressure of the gas in the second gas storage portion 102 is too high, the air compression device 103 can be controlled to be turned on, and the pressure of the gas in the first gas storage portion 101 and the pressure of the gas in the second gas storage portion 102 are adjusted, so that the pressure of the gas in the first gas storage portion 101 and the pressure of the gas in the second gas storage portion 102 are kept normal. The air compression device 103 is not required to be started in the air supplementing and exhausting process of the air spring 105, and is only started when the pressure of the air fed into the first air storage portion 101 is too low or the pressure of the air fed into the second air storage portion 102 is too high, so that the starting frequency of the air compression device 103 can be reduced, and the service life of the air compression device 103 is prolonged.
In addition, the air suspension air circuit device in the embodiment can complete the air spring 105 air supplementing and exhausting process only by controlling the first control switch V1 and the second control switch V2, so that the air circuit structure of the air suspension air circuit device is simplified, the stability of the air suspension air circuit device is improved, and the production cost can be reduced.
According to the technical scheme, the air suspension air circuit device is provided, wherein the output end of a first air storage part, a first control switch, a second air storage part and the input end of the first air storage part in the air suspension air circuit device are sequentially communicated through a main air pipe; the air spring is communicated with a main pipeline air pipe between the first control switch and the second control switch through a branch pipeline; wherein the gas pressure in the first gas storage portion is greater than the gas pressure in the second gas storage portion. In the air spring air supplementing mode, the first air storage part supplements air for the air spring through the first control switch, and when the first air storage part is provided with air, an air compression device in the air circuit device of the air suspension is not required to be started to supplement air for the air spring; in the air spring deflation mode, the second air storage part stores the air released by the air spring through the second control switch, and when the second air storage part has a storage space, the air compression device is not required to be started to process the air released by the air spring; therefore, the starting frequency of the air compression device can be effectively reduced, and the service life of the air compression device is prolonged. In addition, the air suspension air circuit device is simple in structure and can reduce the number of valve bodies in the air suspension air circuit.
Fig. 2 is a schematic structural diagram of another air circuit device for an air suspension according to an embodiment of the present invention, as shown in fig. 2, the device includes an air spring 105, a first air storage portion 101, a second air storage portion 102, a main air pipe 104, a branch air pipe 106, a first control switch V1 and a second control switch V2. Further, referring to fig. 2, the apparatus further includes: the first pressure sensor P1 is located at the output end of the first gas storage portion 101 and is configured to detect a first pressure value at the output end of the first gas storage portion 101; the second pressure sensor P2 is located in the tank of the second gas storage part 102 and is used for detecting a second pressure value of the second gas storage part 102; the air compression device 103 is located on the main air pipe 104 between the second air storage portion 102 and the input end of the first air storage portion 101, and the air compression device 103 is configured to adjust the pressure of the first air storage portion 101 and the second air storage portion 102 in the air circuit air supplementing mode when the first pressure value is lower than a first preset value and/or the second pressure value is higher than a second preset value.
The air compression device 103 may compress and discharge the air flowing to the air compression device 103, and the air compression device 103 may be an air compressor, for example.
Specifically, when the first pressure value is lower than the first preset value, it indicates that the compressed gas in the first gas storage portion 101 is insufficient, so that the air spring 105 needs to be supplemented or inflated, and at this time, in the air circuit air supplementing mode, the air compression device 103 is started to compress the gas in the second gas storage portion 102 and then discharge the compressed gas to the first gas storage portion 101, thereby adjusting the pressure of the gas in the first gas storage portion 101. When the second pressure value is higher than the second preset value, it indicates that the gas in the second gas storage portion 102 is too much, so that the gas pressure in the second gas storage portion 102 is too high, and the gas pressure in the second gas storage portion 102 needs to be released, at this time, the air compression device 103 is started, and the gas in the second gas storage portion 102 is compressed and then discharged to the first gas storage portion 101, so as to regulate the pressure of the gas in the second gas storage portion 102. By controlling the air compression device 103 to be started only when the preset condition is met and adjusting the pressure of the gas in the first gas storage portion 101 and the second gas storage portion 102, the starting frequency of the air compression device can be effectively reduced, and therefore the service life of the air compression device is prolonged.
Further, referring to fig. 2, the apparatus further includes an air supply and exhaust port 112, an air supply and exhaust pipe 111, and a third control switch V3; the third control switch V3 is located on the air supply and exhaust pipe, and the third control switch V3 is used for controlling the conducting state of the air supply and exhaust pipe 111, and the air supply and exhaust port 112 is communicated with the main pipe between the second control switch V2 and the second air storage part 102 through the air supply and exhaust pipe 111.
Specifically, the air supply and exhaust pipe 111 is connected to the air supply and exhaust port 112, and when the air suspension air path device is in an exhaust state, the first control switch V1, the second control switch V2 and the third control switch V3 are required to be opened, and the air in the main air path 104, the first air storage portion 101 and the second air storage portion 102 is exhausted to the outside, so that after the air in the air suspension air path device is exhausted, the air suspension air path device is overhauled. When the air suspension air path device is in the air supplementing state, the first control switch V1 and the second control switch V2 are required to be closed, and the third control switch V3 is required to be opened, so that external air flows into the main air path pipe 104 through the air supplementing and exhausting port 112 and the air supplementing and exhausting pipe 111. Under normal conditions, there is an unavoidable loss of gas in the air suspension gas circuit device, when the air compression device 103 compresses all the gas in the second gas storage portion 102 and pumps the compressed gas into the first gas storage portion 101, and when the first pressure value still does not meet the preset pressure value, the air suspension gas circuit device enters the air supplementing state, and controls the third control switch V3 to open, so that the external gas flows from the air supplementing and exhaust port 111 to the second gas storage portion 102 until the first pressure value meets the preset pressure value, and air supplementing is performed on the air suspension gas circuit device.
With continued reference to fig. 2, the device further includes a check valve F1, where the check valve F1 is located on the main air pipe 104 between the input end of the first air storage portion 101 and the air compression device 103, and the conducting direction of the check valve F1 is that the air compression device 103 points to the input end of the first air storage portion 101.
Specifically, as shown in fig. 2, the check valve F1 is located between the filter 109 and the input end of the first air storage portion 101, when the check valve F1 is turned on, the main air pipe 104 between the input end of the first air storage portion 101 and the air compression device 103 is turned on, compressed air discharged from the air compression device 103 can flow into the first air storage portion 101 through the filter 109, and because the conduction direction of the check valve F1 points to the input end of the first air storage portion 101 from the air compression device 103, high-pressure air in the first air storage portion 101 does not flow to the air compression device 103 through the check valve F1, so that the high-pressure air in the first air storage portion 101 is prevented from leaking out, and the high-pressure air in the first air storage portion 101 can only flow to the main air pipe 104 on one side of the first control switch V1. In the prior art, a plurality of one-way valves are needed to control the gas flow direction in the gas circuit, and the air suspension gas circuit in the embodiment can control the gas flow direction in the gas circuit by only adopting one-way valve F1, so that the gas circuit is simplified, and the problems of excessive valve body quantity and complex gas circuit structure in the prior art are solved.
With continued reference to fig. 2, the apparatus further includes a solenoid valve 110, the solenoid valve 110 being located in the bypass air duct 106, the solenoid valve 110 being configured to control the conduction state of the bypass air duct 106.
Specifically, the electromagnetic valve 110 is located on the bypass air pipe 106, when the electromagnetic valve 110 is turned on, the bypass air pipe 106 is in a turned-on state, and when the electromagnetic valve 110 is turned off, the bypass air pipe 106 is in a turned-off state, so that the turned-on state of the bypass air pipe 106 is controlled.
The air springs 105 comprise a plurality of branch air pipes 106, and each air spring 105 is communicated with the main air pipe 104 between the first control switch V1 and the second control switch V2 through one branch air pipe 106; the solenoid valves 110 include a plurality of solenoid valves 110, one solenoid valve 110 being provided on each bypass air pipe 106.
Specifically, the air springs 105 include a plurality of, illustratively, the air springs 105 are divided into a front left air spring, a front right air spring, a rear left air spring, and a rear right air spring, thereby controlling the vehicle height. Each air spring 105 is communicated with the main air pipe 104 between the first control switch V1 and the second control switch V2 through one branch air pipe 106, and each branch air pipe 106 is provided with an electromagnetic valve 110, so that the air inflow of each air spring 105 is controlled, the height of each wheel of the vehicle can be controlled respectively, and the maneuverability of the air suspension of the vehicle is improved.
Optionally, the device further comprises a temperature sensor 107, wherein the temperature sensor 107 is connected to the air compression device 103, and the temperature sensor 107 is used for measuring the temperature of the air compression device 103; a dryer 108 is located on the main gas pipe 104 between the second gas storage part 102 and the air compression device 103, and the dryer 108 is used for drying the gas flowing from the second gas storage part 102 to the air compression device 103; a filter 109 is provided on the main air pipe 104 between the input end of the first air reservoir 101 and the air compression device 103, the filter 109 being for filtering the air flowing from the air compression device 103 to the first air reservoir 101.
Specifically, by measuring the temperature of the air compression device 103, the temperature sensor 107 can control the air compression device 103 to stop operating when the temperature of the air compression device 103 measured by the temperature sensor 107 exceeds a preset temperature, so as to avoid damage to the air compression device 103 caused by too high temperature of the air compression device 103. The dryer 108 and the filter 109 can dry and filter the gas, respectively, thereby ensuring a stable operation of the device.
According to the technical scheme, the air suspension air circuit device is provided, the air compression device in the device is not required to be started in the air spring air supplementing and exhausting process, the starting frequency of the air compression device can be effectively reduced, and therefore the service life of the air compression device is prolonged. In addition, the air suspension air circuit device is simple in structure, the number of valve bodies in the air suspension air circuit can be reduced, the stability of the air suspension air circuit device is improved, and the production cost of the air suspension air circuit can be reduced.
The embodiment of the invention also provides a control method of the air suspension air circuit device, which is used for controlling the air suspension air circuit device in any implementation of the invention, fig. 3 is a schematic diagram of the control method of the air suspension air circuit device provided by the embodiment of the invention, fig. 4 is a conduction schematic diagram of the air suspension air circuit device in an air spring air supplementing mode provided by the embodiment of the invention, and fig. 5 is a conduction schematic diagram of the air suspension air circuit device in an air spring air bleeding mode provided by the embodiment of the invention, which comprises:
S110, in the air spring air supplementing mode, the first control switch V1 is controlled to be turned on, the air compression device 103 and the second control switch V2 are controlled to be turned off, and the first air storage part 101 supplements air for the air spring 105 through the first control switch V1 and the branch air pipe 106.
Specifically, the air spring air supplementing mode is a mode in which the vehicle control unit controls the air suspension air circuit device to supplement air to the air spring, and the vehicle is lifted in the mode. As shown in fig. 4, in the air spring air supplementing mode, the first control switch V1 is controlled to be turned on, the air compression device 103 is controlled, and the second control switch V2 is controlled to be turned off, so that the air in the first air storage portion 101 flows along the pipeline of the red line portion in fig. 4, the air in the first air storage portion 101 flows from the first control switch V1 to the branch air pipe 106 through the main air pipe 104, flows to the air spring 105 through the branch air pipe 106, and supplements air for the air spring 105, and thus the air supplementing process of the air spring 105 can be completed without starting the air compression device 103 in the air spring air supplementing mode.
S120, in the air spring deflation mode, the second control switch V2 is controlled to be opened, the air compression device and the first control switch V1 are controlled to be closed, and the second air storage part 102 stores air discharged by the air spring 105.
Specifically, the air spring deflation mode is a mode in which the vehicle control unit controls the air suspension air circuit device to give up the air spring, and the vehicle height is reduced in the mode. As shown in fig. 5, in the air spring air supplementing mode, the second control switch V2 is turned on, the air compression device 103 and the first control switch V1 are turned off, the air in the air spring 105 is released to the branch air pipe 106, the air is discharged from the branch air pipe 106 to the main air pipe 104, the second air storage part 102 located on the main air pipe 104 stores the air released by the air spring 105, and the air released by the air spring 105 does not need to be compressed immediately by the air compression device 103 due to the existence of the second air storage part 102 and is discharged to the first air storage part 101, so that the air spring 105 can be exhausted without starting the air compression device 103 in the air spring air exhausting mode, and the starting times of the air compression device 103 are reduced.
The technical scheme of the embodiment provides a control method of an air suspension air circuit device, which comprises the steps of controlling a first control switch to be turned on and controlling an air compression device and a second control switch to be turned off in an air spring air supplementing mode, wherein a first air storage part supplements air for an air spring through the first control switch and a branch air pipe; and in the air spring deflation mode, the second control switch is controlled to be turned on, the air compression device and the first control switch are controlled to be turned off, and the second air storage part stores air released by the air spring. The air compression device in the embodiment does not need to be started in the air spring air supplementing and exhausting process, and the starting frequency of the air compression device can be effectively reduced, so that the service life of the air compression device is prolonged.
The embodiment of the invention also provides another control method of the air suspension air circuit device, and in the embodiment, the control method of the air suspension air circuit device in an air circuit air supplementing mode and an air circuit air exhausting mode is provided.
Fig. 6 is a conducting schematic diagram of an air suspension air circuit device in an air circuit air supply mode, as shown in fig. 6, where the device further includes an air compression device 103, a first pressure sensor P1 and a second pressure sensor P2, the first pressure sensor P1 is located at an output end of the first air storage portion 101, and is used for detecting a first pressure value of the output end of the first air storage portion 101; the second pressure sensor P2 is located in the tank of the second gas storage portion 102 and is used for detecting a second pressure value of the second gas storage portion 102; the air compression device 103 is located on the main air pipe 104 between the second air storage part 102 and the input end of the first air storage part 101, and the control method of the air suspension air circuit device further comprises the following steps: acquiring a first pressure value and a second pressure value, controlling the first control switch V1 and the second control switch V2 to be closed and controlling the air compression device 103 to be opened in the air circuit air supplementing mode when the first pressure value is lower than a first preset value and/or the second pressure value is higher than a second preset value, and pumping the air of the second air storage part 102 into the first air storage part 101 after the air compression device 103 compresses the air.
Specifically, when the first pressure value is lower than the first preset value, it indicates that the compressed gas in the first gas storage portion 101 is insufficient, and is insufficient to supplement or inflate the air spring 105, and the air in the compressed gas in the first gas storage portion 101 needs to be supplemented, and at this time, the gas circuit air supplementing mode is entered. In the air circuit air supply mode, the first control switch V1 and the second control switch V2 are controlled to be closed, the air compression device 103 is controlled to be started, the air circuit conducted in the air circuit air supply mode is shown as a red line part in fig. 6, and the air in the second air storage part 102 is compressed and then pumped into the first air storage part 101, so that the pressure of the air in the first air storage part 101 is regulated until the first pressure value meets a preset pressure value. When the second pressure value is higher than the second preset value, it indicates that the gas in the second gas storage portion 102 is too much, so that the gas pressure in the second gas storage portion 102 is too high, and the gas pressure in the second gas storage portion 102 needs to be released, and then the gas circuit gas supplementing mode is entered. In the air circuit air supply mode, the air compression device 103 is started to compress the air in the second air storage part 102 and then discharge the compressed air to the first air storage part 101, so that the pressure of the air in the second air storage part 102 is regulated. By controlling the air compression device 103 to be started only when the preset condition is met and adjusting the pressure of the gas in the first gas storage portion 101 and the second gas storage portion 102, the starting frequency of the air compression device can be effectively reduced, and therefore the service life of the air compression device is prolonged.
Fig. 7 is a schematic conducting diagram of another air suspension air circuit device provided in an embodiment of the present invention in an air circuit air supply mode, and referring to fig. 7, the air suspension air circuit device further includes an air supply and exhaust port 112, an air supply and exhaust pipe 111, and a third control switch V3; the third control switch V3 is located on the pipe line of the air supply and exhaust pipe, and the air supply and exhaust port 112 is connected to the main pipe line between the second control switch V2 and the second air storage portion 102 through the air supply and exhaust pipe 111. The air suspension air circuit control method further comprises the following steps:
In the air circuit air supply mode, when the first pressure value is lower than the first preset value and/or the second pressure value is higher than the second preset value, the third control switch V3 is controlled to be opened, so that the air supply and the air exhaust port 112 can suck air and output the air to the second air storage portion 102.
Specifically, under normal conditions, there is an unavoidable loss of gas in the air suspension gas circuit device, when the air compression device 103 compresses all the gas in the second gas storage portion 102 and pumps the compressed gas into the first gas storage portion 101, when the first pressure value still does not meet the preset pressure value, the first control switch V1 and the second control switch V2 need to be closed, the third control switch V3 is opened, the conducted gas circuit is as shown in a red line part of fig. 7, so that the gas is sucked into the second gas storage portion 102 through the gas supplementing and exhausting port 112, and under the gas circuit supplementing mode, the air compression device 103 is started to compress the gas in the second gas storage portion 102 and then exhaust the compressed gas to the first gas storage portion 101, so as to adjust the pressure of the gas in the second gas storage portion 102, and when the first pressure value meets the preset pressure value, the third control switch V3 is closed, thus completing the gas supplementing process of the air suspension gas circuit device.
Fig. 8 is a schematic conducting diagram of an air suspension air circuit device in an air circuit exhaust mode according to an embodiment of the present invention. As shown in fig. 8, the air suspension air circuit device further includes a check valve F1, where the check valve F1 is located on the main air pipe 104 at the input end of the first air storage portion 101, and the conducting direction of the check valve F1 points from the air compression device 103 to the input end of the first air storage portion 101; the control method further comprises the following steps:
In the air path exhaust mode, the air compression device 103 and the check valve F1 are controlled to be closed, and the first control switch V1, the second control switch V2 and the third control switch V3 are controlled to be opened, so that the air supplementing and exhausting port 112 is enabled to exhaust air.
Specifically, the air circuit exhaust mode is a mode of exhausting all the air in the air suspension air circuit device to the outside when the air suspension air circuit device needs to be overhauled. The air supplementing and exhausting pipe 111 is communicated with the outside through the air supplementing and exhausting port 112, in the air channel exhausting mode, the air compressing device 103 and the one-way valve F1 are controlled to be closed, the first control switch V1, the second control switch V2 and the third control switch V3 are controlled to be opened, and the air in the main air channel 104, the first air storage part 101 and the second air storage part 102 is exhausted to the outside from the air supplementing and exhausting port 112, so that after the air in the air suspension air channel device is exhausted, the air suspension air channel device is overhauled.
According to the technical scheme, the control method of the air suspension air circuit device is provided, under the control method, the air compression device is not required to be started in the air spring air supplementing and exhausting process, the starting frequency of the air compression device can be effectively reduced, and therefore the service life of the air compression device is prolonged.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. The air circuit device of the air suspension is characterized by comprising an air spring, a first air storage part, a second air storage part, a main air pipe, a branch air pipe, a first control switch and a second control switch;
The output end of the first gas storage part, the first control switch, the second gas storage part and the input end of the first gas storage part are sequentially communicated through the main gas pipe; the air spring is communicated with a main pipeline air pipe between the first control switch and the second control switch through the branch pipeline air pipe;
The first gas storage part is used for supplementing the air spring through the first control switch in an air spring air supplementing mode; the second gas storage part is used for storing the gas released by the air spring through the second control switch in the air spring gas release mode; the gas pressure in the first gas storage portion is greater than the gas pressure in the second gas storage portion.
2. The air suspension air circuit device according to claim 1, further comprising:
the first pressure sensor is positioned at the output end of the first gas storage part and is used for detecting a first pressure value of the output end of the first gas storage part;
the second pressure sensor is positioned in the tank body of the second gas storage part and is used for detecting a second pressure value of the second gas storage part;
The air compression device is positioned on the main pipeline air pipe between the second air storage part and the input end of the first air storage part, and is used for adjusting the pressure of the first air storage part and the second air storage part in an air circuit air supplementing mode when the first pressure value is lower than a first preset value and/or the second pressure value is higher than a second preset value.
3. The air suspension air circuit device according to claim 2, further comprising an air supply and exhaust port, an air supply and exhaust air pipe, and a third control switch;
the third control switch is located on the pipeline of the air supplementing and exhausting air pipe, and is used for controlling the conducting state of the air supplementing and exhausting air pipe, and the air supplementing and exhausting port is communicated with the main pipeline air pipe between the second control switch and the second air storage part through the air supplementing and exhausting air pipe.
4. The air suspension circuit device according to claim 2, further comprising a check valve located on the main circuit air pipe between the input end of the first air storage portion and the air compression device, wherein the conduction direction of the check valve is the direction in which the air compression device is directed toward the input end of the first air storage portion.
5. An air suspension air circuit device according to any one of claims 1-4 further comprising a solenoid valve located on said bypass air duct, said solenoid valve being adapted to control the conduction state of said bypass air duct.
6. The air suspension air circuit device according to claim 5 wherein said air springs comprise a plurality of said bypass air lines, said bypass air lines comprising a plurality of said air springs, each of said air springs being in communication with a main air line between said first control switch and said second control switch via one of said bypass air lines;
The electromagnetic valves comprise a plurality of electromagnetic valves, and each bypass air pipe is provided with one electromagnetic valve.
7. A control method for an air suspension air circuit device according to any one of claims 1 to 6, comprising:
In an air spring air supplementing mode, a first control switch is controlled to be turned on, an air compression device and a second control switch are controlled to be turned off, and a first air storage part supplements air for the air spring through the first control switch and a branch air pipe;
And in the air spring deflation mode, the second control switch is controlled to be turned on, the air compression device and the first control switch are controlled to be turned off, and the second air storage part stores the air released by the air spring.
8. The control method according to claim 7, wherein the air suspension air path device further comprises an air compression device, a first pressure sensor and a second pressure sensor, the first pressure sensor is located at the output end of the first air storage part, and the first pressure sensor is used for detecting a first pressure value of the output end of the first air storage part; the second pressure sensor is positioned in the tank body of the second gas storage part and is used for detecting a second pressure value of the second gas storage part; the air compression device is located on the main air pipe between the second air storage portion and the input end of the first air storage portion, and the method further comprises:
Acquiring the first pressure value and the second pressure value,
When the first pressure value is lower than a first preset value and/or the second pressure value is higher than a second preset value, the first control switch and the second control switch are controlled to be closed and the air compression device is controlled to be opened in an air circuit air supplementing mode, and the air compression device compresses the air of the second air storage part and pumps the compressed air into the first air storage part.
9. The control method of claim 8, wherein the air suspension air circuit device further comprises an air supply and exhaust port, an air supply and exhaust air pipe and a third control switch; the third control switch is located on a pipeline of the air supplementing and exhausting air pipe, the air supplementing and exhausting opening is communicated with the main pipeline air pipe between the second control switch and the second air storage part through the air supplementing and exhausting air pipe, and the method further comprises:
And under the air circuit air supplementing mode, when the first pressure value is lower than a first preset value and/or the second pressure value is higher than a second preset value, the third control switch is controlled to be opened, so that the air supplementing and the air sucked by the air outlet are output to the second air storage part.
10. The control method according to claim 9, wherein the air suspension air passage device further includes a check valve located on the main air passage pipe of the input end of the first air storage portion, the conduction direction of the check valve being directed from the air compression device to the input end of the first air storage portion; the method further comprises the steps of:
And in the air circuit exhaust mode, the air compression device and the one-way valve are controlled to be closed, and the first control switch, the second control switch and the third control switch are controlled to be opened, so that the air supplementing and the exhaust port exhaust air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410453970.0A CN118124320A (en) | 2024-04-16 | 2024-04-16 | Air suspension air circuit device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410453970.0A CN118124320A (en) | 2024-04-16 | 2024-04-16 | Air suspension air circuit device and control method |
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| Publication Number | Publication Date |
|---|---|
| CN118124320A true CN118124320A (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410453970.0A Pending CN118124320A (en) | 2024-04-16 | 2024-04-16 | Air suspension air circuit device and control method |
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| Country | Link |
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| CN (1) | CN118124320A (en) |
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2024
- 2024-04-16 CN CN202410453970.0A patent/CN118124320A/en active Pending
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