CN110001338A - A kind of suspension system and method and vehicle - Google Patents
A kind of suspension system and method and vehicle Download PDFInfo
- Publication number
- CN110001338A CN110001338A CN201910205696.4A CN201910205696A CN110001338A CN 110001338 A CN110001338 A CN 110001338A CN 201910205696 A CN201910205696 A CN 201910205696A CN 110001338 A CN110001338 A CN 110001338A
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- CN
- China
- Prior art keywords
- air spring
- control unit
- solenoid valve
- vehicle
- electronic control
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/018—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/10—Acceleration; Deceleration
- B60G2400/106—Acceleration; Deceleration longitudinal with regard to vehicle, e.g. braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/20—Speed
- B60G2400/204—Vehicle speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/25—Stroke; Height; Displacement
- B60G2400/252—Stroke; Height; Displacement vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/50—Pressure
- B60G2400/52—Pressure in tyre
Abstract
The present invention provides a kind of suspension system and method and vehicle, including air spring, feeder, detection device, executive device and electronic control unit；Air spring is for changing bodywork height；Feeder is connect with air spring；Detection device is for detecting tyre pressure；Executive device includes solenoid valve and relay valve, and relay valve is connect with air spring and feeder respectively；Air spring is connected with solenoid valve；Electronic control unit is connect with detection device and executive device respectively, electronic control unit judges whether tire blows out according to the tyre pressure that detection device detects, when tire is blown out, electronic control unit control feeder and relay valve give the air spring inflation blown out, the solenoid valve opening for controlling the air spring that remaining is not blown out simultaneously is deflated, so that bodywork height is rapidly reached equilibrium state, promotes the safety of vehicle when blowing out.
Description
Technical field
The invention belongs to automotive suspension technical fields, and in particular to a kind of suspension system and method and vehicle.
Background technique
When vehicle flat tire, the reduction of bodywork height can greatly increase vehicle and occur to roll a possibility that even turning on one's side, thus
It threatens to the life security of driver.The vehicle for equipping air suspension has the adjustable characteristic of bodywork height, but responds
Speed is slower, thus realizes the rapid inflation for moment of blowing out by the response speed for the suspension system for promoting vehicle itself, mentions
The height for rising side vehicle body of blowing out, to promote the safety of vehicle.
Application No. is: 201310195724.1 automotive tyre explosion safety control system, including device for monitoring tyre pressure, the system of blowing out
Dynamic device, preceding sensing device and active steering control device are examined when detecting that vehicle is blown out by preceding sensing device
Measuring car front obstacle simultaneously controls vehicle active steering, to avoid colliding with front obstacle.Application number
The intelligent vehicle of 201810154435.X, the tyre-bursting security control method of intelligent vehicle and system, when vehicle is blown out,
By the acquisition of environmental information and vehicle-state, control operation is carried out to vehicle of blowing out, the safety for the vehicle that guarantees to blow out.It is above-mentioned
Invention does not control the suspension system of vehicle, not can guarantee the flat of bodywork height when blowing out and roll stiffness
Weighing apparatus.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of suspension system and method, when vehicle flat tire, is outstanding to the wheel blown out
Frame inflation, remaining wheel suspension of not blowing out discharge portion gas to be rapidly reached the balance of two sides bodywork height, when promotion is blown out
Safety.When vehicle is blown out, the air pressure of tire is reduced rapidly, and leads to side bodywork height reduction of blowing out, at this time vehicle
The imbalance of height degree easily causes the inclination of vehicle even to be turned on one's side.The tire pressure that the present invention is transmitted by device for monitoring tyre pressure
Whether the change rate judgement for the signal that signal and height sensor transmit currently blows out, as electronic control unit ECU
Determine that current vehicle is blown out, is then inflated by the air suspension that solenoid valve and relay valve control wheel of blowing out, simultaneously
Wheel suspension of not blowing out carries out partial bleeder, until bodywork height reaches balance, closes two sides solenoid valve and relay valve.
The technical solution adopted by the present invention to solve the technical problems is: a kind of suspension system, including
Air spring；
Feeder, the feeder are connect with air spring；
Detection device, the detection device is for detecting tyre pressure；
Executive device, the executive device include solenoid valve and relay valve, the relay valve respectively with air spring and confession
Device of air connection；The air spring is connected with solenoid valve；
Electronic control unit, the electronic control unit are connect with detection device and executive device respectively, and electronic control is single
Member judges whether tire blows out according to the tyre pressure that detection device detects, when tire is blown out, electronic control unit control
Feeder and relay valve processed give the air spring inflation blown out, while controlling the solenoid valve for the air spring that remaining is not blown out
Opening is deflated.
In above scheme, the feeder includes air compressor and high pressure tank；
In above scheme, the solenoid valve includes 2/2-way solenoid valve and two-bit triplet solenoid valve；
2/2-way solenoid valve and two-bit triplet electricity are successively arranged on the pipeline that the air spring is connect with feeder
Magnet valve；
The relay valve includes inlet chamber A, control chamber B and outlet chamber C；The inlet chamber A and high-pressure gas of the relay valve
Tank is connected；Outlet chamber C is connected with check valve one end, and the other end of the check valve is connected with air spring；Control chamber B and two
Position-3-way solenoid valve connection；
When two-bit triplet solenoid valve obtains electric, air spring is connect with air compressor respectively with relay valve；When two three
When three-way electromagnetic valve power loss, air spring is connect with high pressure tank respectively with relay valve.
In above scheme, the detection device further includes vehicle speed sensor and height sensor；
The vehicle speed sensor is in driving status or stationary state for detecting current vehicle；
Whether the height sensor is horizontal in initial position for detecting bodywork height.
In above scheme, the device for monitoring tyre pressure includes pressure sensor, acceleration transducer, micro-control unit MCU
And wireless transmitter；
The pressure sensor is for detecting tire pressure；
The acceleration transducer is used to detect the acceleration of vehicle；
Tire pressure signal is sent to for receiving sensor signal by wireless transmitter by the micro-control unit MCU
Electronic control unit.
In above scheme, the electronic control unit includes input module, control module and output module；
The input signal of the input module receiving detection device；
The control module judges whether tire blows out according to the tyre pressure that detection device detects, when tire is blown out
When, electronic control unit control feeder and relay valve give the air spring inflation blown out, while controlling remaining and not blowing out
Air spring solenoid valve opening deflate；
The output module is connected with executive device, according to the work of the output control executive device of control module.
A kind of vehicle, including the suspension system.
A kind of control method of the suspension system according to, comprising the following steps:
The detection device detects tyre pressure；
The electronic control unit judges whether tire blows out according to the tyre pressure that detection device detects, when tire occurs
When blowing out, the relay valve of electronic control unit control feeder and executive device gives the air spring inflation blown out, same to time control
The solenoid valve opening for making the air spring that remaining is not blown out is deflated, until bodywork height reaches balance, closes solenoid valve
And relay valve.
It is further comprising the steps of in above scheme:
The vehicle speed sensor of the detection device detects car speed, and height sensor detects the height of vehicle body；
When a vehicle is at rest, guaranteed according to the air pressure that the signal of height sensor adjusts each air spring
Bodywork height balance:
If vehicle side vehicle body is higher, other side vehicle body is relatively low, and electronic control unit controls the servo of the relatively low side of vehicle body
The control chamber B of valve is connected with high pressure tank, and the high pressure gas in relay valve inlet chamber A is filled with rapidly outlet chamber C, and passes through list
It is filled with the air spring of the relatively low side of vehicle body to valve, increases the vehicle body of the relatively low side of vehicle body；
The air spring of the higher side of vehicle body of electronic control unit control simultaneously is deflated, and the vehicle body of the higher side of vehicle body is reduced
Highly；
Left and right sides bodywork height balance is detected by height sensor, stops the inflation/deflation of air spring.
In above scheme, the electronic control unit judges whether tire blows out according to the tyre pressure that detection device detects
And the step of being controlled specifically:
The vehicle speed sensor of the detection device detects car speed, when vehicle is kept in motion, tire pressure monitoring dress
Set the electronic control unit that will test present tire pressure and be sent to vehicle；
The electronic control unit carries out processing calculating according to tire pressure signal and bodywork height signal, if tire
The change rate of pressure is greater than preset value m, while the change rate of bodywork height is greater than preset value n, and electronic control unit judges vehicle
It blows out；
The control chamber B that the electronic control unit controls the relay valve for wheel of blowing out is connected to high pressure tank, inlet chamber A
Interior high pressure gas is filled with rapidly outlet chamber C, and the air spring 6 for wheel of blowing out is filled with by check valve, makes reduction of blowing out
Bodywork height rises rapidly；
The control chamber B that the electronic control unit controls the relay valve of remaining wheel of not blowing out does not connect with high pressure tank
Logical, control solenoid valve makes remaining air spring deflate, and reduces bodywork height above wheel of not blowing out；
Bodywork height above each wheel is detected by height sensor, until bodywork height reaches balance, controls air bullet
Spring stops inflation/deflation.
Compared with prior art, the beneficial effects of the present invention are:
1. the present invention carries out whether fusion treatment judgement blows out by the information acquired to sensor, electronics control this moment
Unit judges vehicle processed is blown out, and the high-pressure aerated system by controlling air suspension itself carries out the suspension for wheel of blowing out
Fast aeration, to promote the bodywork height of vehicle flat tire side rapidly, while the air suspension for wheel of not blowing out carries out suitably
Deflation makes bodywork height be rapidly reached equilibrium state, promotes the safety of vehicle when blowing out.
2. the present invention passes through the quick inflation/deflation of pressure-air suspension, blowing out, air spring of the moment to wheel of blowing out fills
Enter high pressure gas, the air suspension for wheel of not blowing out discharges portion gas, reaches the balance of bodywork height, while increasing air bullet
The rigidity of spring reduces the risk of inclination.
3. feeder, vehicle speed sensor, device for monitoring tyre pressure and bodywork height that the present invention makes full use of vehicle itself
Sensor simplifies the structure of tyre explosion safety control device.
4. the present invention replaces general solenoid valve using relay valve to control the inflation of air spring, increase air flue latus rectum, contracting
Short reaction time and pressure settling time, increase aeration speed.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the structural schematic diagram of device for monitoring tyre pressure of the present invention；
Fig. 3 is device for monitoring tyre pressure control flow chart of the present invention；
Fig. 4 is relay valve structural schematic diagram；
Fig. 5 is electronic control unit structural schematic diagram of the present invention.
In figure, 1, vehicle speed sensor；2, height sensor；3, device for monitoring tyre pressure；4, electronic control unit；5, it takes turns
Tire；6, air spring；7, solenoid valve a；8, solenoid valve b；9, solenoid valve c；10, solenoid valve d；11, solenoid valve e；12, it is air-dried
Device；13, air compressor；14, high pressure tank；15, solenoid valve f；16, solenoid valve g；17, solenoid valve h；18, check valve；19,
Relay valve；301, wireless transmitter；302, microcontroller；303, pressure sensor；304, acceleration transducer；305, low pressure
Battery.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
The orientation or positional relationship of the instructions such as " thickness ", "upper", "lower", " axial direction ", " radial direction ", "vertical", "horizontal", "inner", "outside"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as
Limitation of the present invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be with
Explicitly or implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or
Two or more, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
Embodiment 1
As shown in Figure 1, a kind of suspension system, including air spring 6, feeder, detection device, executive device and electronics
Control unit 4.
The air spring 6 is for adjusting bodywork height；The feeder is connect with air spring 6；The detection dress
It sets for detecting tyre pressure；The executive device includes solenoid valve and relay valve 19, the relay valve 19 respectively with air bullet
Spring 6 is connected with feeder；The air spring 6 is connected with solenoid valve；Electronic control unit 4, the electronic control unit 4 divide
It is not connect with detection device and executive device, electronic control unit 4 judges that tire is according to the tyre pressure that detection device detects
No to blow out, when tire is blown out, electronic control unit 4 controls feeder and relay valve 19 to the air spring 6 blown out
Inflation, while the solenoid valve opening for controlling the air spring 6 that remaining is not blown out is deflated.
Preferably, the air spring 6 is bellows type air spring；The suspension of vehicle, top are installed below air spring 6
It is installed on vehicle frame；The air pressure of air spring 6 can be 0.4~0.8MPa.
The feeder includes air dryer 12, air compressor 13 and high pressure tank 14.The air compression
Machine 13 for boosting to air is used to that high pressure tank will to be stored in after the gas boost released in air spring 6
14.The air dryer 12 is used for dry air.The high pressure tank 14 is for storing high pressure gas；Ordinary high pressure gas storage
Tank gas pressure is about 1MPa, and 14 gas pressure of high pressure tank of the present invention can reach 15MPa, the pole with air spring 6
Big pressure difference can guarantee to blow out the rapid inflation/deflation of moment.The feeder includes that front-wheel feeder and rear-wheel gas supply fill
It sets, gas circuit length is shortened in supplying to front wheels and rear wheels independently, promotes gas supply speed.
The solenoid valve includes 2/2-way solenoid valve and two-bit triplet solenoid valve；The air spring 6 and feeder
2/2-way solenoid valve and two-bit triplet solenoid valve are successively arranged on the pipeline of connection；The relay valve 19 includes inlet chamber A, control
Chamber B and outlet chamber C processed；The inlet chamber A of the relay valve 19 is connected with high pressure tank 14；Outlet chamber C and 18 one end of check valve
It is connected, the other end of the check valve 18 is connected with air spring 6；Control chamber B is connect with two-bit triplet solenoid valve；When two
When three-way magnetic valve obtains electric, air spring 6 is connect with air compressor 13 respectively with relay valve 19；When two-bit triplet solenoid valve loses
When electric, air spring 6 is connect with high pressure tank 14 respectively with relay valve 19.
The detection device includes vehicle speed sensor 1, height sensor 2 and device for monitoring tyre pressure 3.The speed passes
Sensor detects 1 current vehicle and is in driving status or stationary state；Under stationary state, pass through the height sensor 2
It is whether horizontal in initial position to detect bodywork height；As shown in Figure 2 and Figure 3, the device for monitoring tyre pressure 3 includes wireless transmission
Device 301, microcontroller 302, pressure sensor 303, acceleration transducer 304 and A-battery 305.The pressure sensing
Device 303 is for detecting tire pressure.The acceleration transducer 304 is used to detect the acceleration of vehicle, judges whether vehicle is located
In starting state, the foundation whether to work as device for monitoring tyre pressure 3.The MCU302 leads to for receiving sensor signal
It crosses wireless transmitter 301 and tire pressure signal is sent to ECU electronic control unit 4.
As shown in figure 5, the electronic control unit 4 includes input module, control module and output module；The input mould
The vehicle speed sensor 1 of block receiving detection device, height sensor 2, tire pressure monitoring module 3 input signal；The control
Module judges whether tire blows out according to the tyre pressure that detection device detects, when tire is blown out, electronic control unit 4
Control feeder and relay valve 19 give the air spring 6 blown out to inflate, while controlling the air spring 6 that remaining is not blown out
Solenoid valve opening is deflated；The output module is connected with executive device, controls executive device according to the output of control module
Work.Specifically,
The control module judges whether vehicle currently remains static according to the input of vehicle speed sensor 1, if being in
Then the control module according to the signal of height sensor 2 adjusts bodywork height to horizontality to stationary state.If vehicle
It is in operating status, the change rate of current tire pressure and the change rate of bodywork height are monitored, if the big Mr. Yu of the change rate of tire pressure
Certain value m, while the change rate of bodywork height is greater than certain certain value n, vehicle is blown out at this time for control module judgement, then is controlled
Solenoid valve and relay valve are inflated for deflated to air spring 6.The output module is connected with solenoid valve, according to the defeated of control module
The open and close of solenoid valve are controlled out.
In the present embodiment, the executive device includes solenoid valve, relay valve and check valve.The solenoid valve includes two two
Three-way electromagnetic valve a7, solenoid valve b8, solenoid valve c9, solenoid valve d10 and two-bit triplet solenoid valve e11, solenoid valve f15, solenoid valve
G16, solenoid valve h17.As shown in figure 4, the relay valve 19 includes inlet chamber A, control chamber B and outlet chamber C；The relay valve
19 inlet chamber A is connected with high pressure tank 14；Outlet chamber C is connected with one end of check valve 18；Control chamber B respectively with two three
Three-way electromagnetic valve is connected.One end of the check valve 18 is connected with 19 outlet chamber C of relay valve, and the other end is connected with air spring 6,
For preventing air spring 6 from deflating by relay valve 19.
A kind of control method of the suspension system according to, comprising the following steps:
The detection device detects tyre pressure；
The electronic control unit 4 judges whether tire blows out according to the tyre pressure that detection device detects, when tire is sent out
When life is blown out, electronic control unit 4 controls feeder and the relay valve 19 of executive device is inflated to the air spring 6 blown out,
The solenoid valve opening for controlling the air spring 6 that remaining is not blown out simultaneously is deflated, until bodywork height reaches balance, is closed
Solenoid valve and relay valve 19.
The electronic control unit 4 judges whether tire is blown out and controlled according to the tyre pressure that detection device detects
The step of specifically:
The vehicle speed sensor 1 of the detection device detects car speed, when vehicle is kept in motion, tire pressure monitoring dress
Setting 3 will test present tire pressure and is sent to the electronic control unit 4 of vehicle；
The electronic control unit 4 carries out processing calculating according to tire pressure signal and bodywork height signal, if tire
The change rate of pressure is greater than preset value m, while the change rate of bodywork height is greater than preset value n, and electronic control unit 4 judges vehicle
It blows out；
The control chamber B that the electronic control unit 4 controls the relay valve 19 for wheel of blowing out is connected to high pressure tank 14, into
High pressure gas in air cavity A is filled with rapidly outlet chamber C, and the air spring 6 for wheel of blowing out is filled with by check valve 18, makes to blow out
Reduced bodywork height rises rapidly；
The electronic control unit 4 controls the control chamber B and high pressure tank 14 of the relay valve 19 of remaining wheel of not blowing out
It is not connected to, control solenoid valve makes remaining air spring 6 deflate, and reduces bodywork height above wheel of not blowing out；
Bodywork height above each wheel is detected by height sensor 2, until bodywork height reaches balance, controls air bullet
Spring 6 stops inflation/deflation.
The above method is further comprising the steps of:
The vehicle speed sensor 1 of the detection device detects car speed, and height sensor 2 detects the height of vehicle body；
When a vehicle is at rest, it is protected according to the air pressure that the signal of height sensor 2 adjusts each air spring 6
Demonstrate,prove bodywork height balance:
If vehicle side vehicle body is higher, other side vehicle body is relatively low, and electronic control unit 4 controls the servo of the relatively low side of vehicle body
The control chamber B of valve 19 is connected with high pressure tank 14, and the high pressure gas in 19 inlet chamber A of relay valve is filled with rapidly outlet chamber C,
And the air spring 6 of the relatively low side of vehicle body is filled with by check valve 18, increase the vehicle body of the relatively low side of vehicle body；
The air spring 6 that electronic control unit 4 controls the higher side of vehicle body simultaneously is deflated, and the vehicle of the higher side of vehicle body is reduced
Height degree；
Left and right sides bodywork height balance is detected by height sensor 2, stops the inflation/deflation of air spring 6.
The specific control process of automotive tyre explosion safety suspension system is as follows in the present embodiment:
It is zero that the vehicle speed sensor 1, which detects car speed, i.e., when vehicle remains static, first according to bodywork height
The aeration quantity that the signal of sensor 2 adjusts each air spring 6 guarantees that bodywork height is horizontal；If under original state, vehicle left side vehicle
Body is higher, and right side bodies are relatively low, as shown in Figure 1, control solenoid valve c9, solenoid valve d10 are remained off, solenoid valve e11, electricity
Magnet valve h17 power loss, B mouthfuls of openings, so that the control chamber B of relay valve 19 be made to pass through solenoid valve e11, solenoid valve h17 and high-pressure gas
Tank 14 is connected, and relay valve 19 is made the high pressure gas in inlet chamber A be filled with outlet chamber C rapidly by high voltage control, and passes through check valve
18 are filled with right hand side air spring 6, increase right side bodies；Solenoid valve f15, solenoid valve g16 obtain it is electric, A mouthfuls opening, make relay valve 19
Control chamber B be connected with air compressor 13 by solenoid valve f15, solenoid valve g16,19 control chamber air pressure of relay valve reduction, this
When inlet chamber A close, no high pressure gas is filled with left side air spring 6, while check valve 18 prevents left side air spring 6 logical
Cross the deflation of relay valve 19；Solenoid valve a7, solenoid valve b8 are opened, and left side air spring 6 is made to be connected with air compressor 13, make left side
The high pressure gas released in air spring 6 enters high pressure tank 14 after the boosting of air compressor 13 again, reduces left
Side bodywork height detects left and right sides bodywork height by height sensor 2 until left and right sides bodywork height balances, and stopping is empty
The inflation/deflation of gas spring, electronic control unit control solenoid valve a7, solenoid valve b8, solenoid valve c9, solenoid valve d10 and close, and two
Three-way magnetic valve e11, solenoid valve f15, solenoid valve g16, solenoid valve h17 are in obtain electricity condition, 6 pressure maintaining of air spring.
The vehicle speed sensor 1 detects vehicle and is under driving status, i.e., speed is not zero.Device for monitoring tyre pressure 3 at this time
In acceleration transducer 304 detect vehicle movement signal, MCU starts to work, and pressure sensor 303 detects present tire pressure
Power and the electronic control unit 4 that vehicle is sent to by wireless transmitter 301.Electronic control unit 4 receives device for monitoring tyre pressure 3
The bodywork height signal that the tire pressure signal and height sensor transmitted transmits, carries out processing calculating.If taking turns tire pressure
The change rate of power is greater than certain certain value m, while the change rate of bodywork height is greater than certain certain value n, then electronic control unit 4 judges
Vehicle is blown out at this time.
As shown in Figure 1, controlling solenoid valve a7 holding if electronic control unit 4 judges that vehicle front left wheel is blown out
Closed state, solenoid valve f15 power loss, B mouthfuls of openings, so that the control chamber B of relay valve 19 be made to pass through solenoid valve f15 and high-pressure gas
Tank 14 is connected, and relay valve 19 is made the high pressure gas in inlet chamber A be filled with outlet chamber C rapidly by high voltage control, and passes through check valve
18 are filled with the air spring 6 above front left wheel, make at the near front wheel since the bodywork height for reduction of blowing out rises rapidly；Solenoid valve
E11, solenoid valve g16, solenoid valve h17 obtain electric, and opening for A mouthfuls makes the control chamber B of relay valve 19 pass through solenoid valve e11, solenoid valve
G16, solenoid valve h17 are connected with air compressor 13, and 19 control chamber B air pressure of relay valve reduces, at this time inlet chamber A and outlet chamber C
It is not communicated with, no high pressure gas is filled with the air spring 6 above remaining wheel of not blowing out, while check valve 18 prevents air bullet
Spring 6 is deflated by relay valve 19；Solenoid valve b8, solenoid valve c9, solenoid valve d10 opening make air spring 6 and air compressor 13
It is connected, reduces bodywork height above wheel of not blowing out；Bodywork height above each wheel is detected by height sensor 2；Sidewall is high
Degree is r, and if tyre model is 195/60R14, then its sidewall height is 195*60%；Locate height sensor value if not blowing out
For h, then shows that bodywork height balances when the value of height sensor is h+r above the place's of blowing out wheel, stop air spring 6
Inflation/deflation, electronic control unit 4 control solenoid valve a7, solenoid valve b8, solenoid valve c9, solenoid valve d10 and close, two-bit triplet electricity
Magnet valve e11, solenoid valve f15, solenoid valve g16, solenoid valve h17 are in obtain electricity condition, 6 pressure maintaining of air spring.It is stored up by high pressure
Gas tank 14 ensure that the balance of bodywork height when blowing out to the fast aeration of air spring 6, improve stabilization when vehicle flat tire
Property, reduce a possibility that inclination is even turned on one's side.Air spring 6 is inflated instead of solenoid valve using relay valve 19, is increased
Air flue latus rectum shortens reaction time and pressure settling time, increases aeration speed.
Embodiment 2
A kind of vehicle, including suspension system described in embodiment 1.Therefore, with the beneficial effect of embodiment 1, herein not
It repeats again.
Although not each embodiment only includes one it should be appreciated that this specification describes according to various embodiments
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solutions in the various embodiments may also be suitably combined for bright book, and forming those skilled in the art can be with
The other embodiments of understanding.
The series of detailed descriptions listed above are illustrated only for possible embodiments of the invention,
The protection scope that they are not intended to limit the invention, it is all without departing from equivalent embodiment made by technical spirit of the present invention or change
It should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of suspension system, which is characterized in that including
Air spring (6)；
Feeder, the feeder are connect with air spring (6)；
Detection device, the detection device is for detecting tyre pressure；
Executive device, the executive device include solenoid valve and relay valve (19), the relay valve (19) respectively with air spring
(6) it is connected with feeder；The air spring (6) is connected with solenoid valve；
Electronic control unit (4), the electronic control unit (4) connect with detection device and executive device respectively, electronic control
Unit (4) judges whether tire blows out according to the tyre pressure that detection device detects, and when tire is blown out, electronic control is single
First (4) control feeder and relay valve (19) give air spring (6) inflation blown out, while controlling remaining sky that do not blow out
The solenoid valve opening of gas spring (6) is deflated.
2. suspension system according to claim 1, which is characterized in that the feeder include air compressor (13) and
High pressure tank (14).
3. suspension system according to claim 2, which is characterized in that the solenoid valve includes 2/2-way solenoid valve and two
Position-3-way solenoid valve；
2/2-way solenoid valve and two-bit triplet electromagnetism are successively arranged on the pipeline that the air spring (6) connect with feeder
Valve；
The relay valve (19) includes inlet chamber A, control chamber B and outlet chamber C；The inlet chamber A and high pressure of the relay valve (19)
Air accumulator (14) is connected；Outlet chamber C is connected with check valve (18) one end, the other end of the check valve 18 and and air spring
(6) it is connected；Control chamber B is connect with two-bit triplet solenoid valve；
When two-bit triplet solenoid valve obtains electric, air spring (6) is connect with air compressor (13) respectively with relay valve (19)；When
When two-bit triplet solenoid valve power loss, air spring (6) is connect with high pressure tank (14) respectively with relay valve (19).
4. suspension system according to claim 1, which is characterized in that the detection device further includes vehicle speed sensor and vehicle
Body height sensor；
The vehicle speed sensor is in driving status or stationary state for detecting current vehicle；
Whether the height sensor is horizontal in initial position for detecting bodywork height.
5. suspension system according to claim 1, which is characterized in that the device for monitoring tyre pressure include pressure sensor,
Acceleration transducer, micro-control unit MCU and wireless transmitter；
The pressure sensor is for detecting tire pressure；
The acceleration transducer is used to detect the acceleration of vehicle；
Tire pressure signal is sent electron for receiving sensor signal, and by wireless transmitter by the micro-control unit MCU
Control unit (4).
6. suspension system according to claim 1, which is characterized in that the electronic control unit (4) include input module,
Control module and output module；
The input signal of the input module receiving detection device；
The control module judges whether tire blows out according to the tyre pressure that detection device detects, when tire is blown out,
Electronic control unit (4) control feeder and relay valve (19) give air spring (6) inflation blown out, while controlling remaining and not having
There is the solenoid valve opening for the air spring (6) blown out to deflate；
The output module is connected with executive device, according to the work of the output control executive device of control module.
7. a kind of vehicle, which is characterized in that including suspension system as claimed in any one of claims 1 to 6.
8. a kind of control method of suspension system described in -6 any one according to claim 1, which is characterized in that including following
Step:
The detection device detects tyre pressure；
The electronic control unit (4) judges whether tire blows out according to the tyre pressure that detection device detects, when tire occurs
When blowing out, the relay valve (19) of electronic control unit (4) control feeder and executive device gives the air spring (6) blown out to fill
Gas, while the solenoid valve opening for controlling the air spring (6) that remaining is not blown out is deflated, until bodywork height reaches flat
Weighing apparatus closes solenoid valve and relay valve (19).
9. the control method of suspension system according to claim 8, which is characterized in that further comprising the steps of:
The vehicle speed sensor (1) of the detection device detects car speed, and height sensor (2) detects the height of vehicle body；
When a vehicle is at rest, it is protected according to the air pressure that the signal of height sensor (2) adjusts each air spring (6)
Demonstrate,prove bodywork height balance:
If vehicle side vehicle body is higher, other side vehicle body is relatively low, and electronic control unit (4) controls the relay valve of the relatively low side of vehicle body
(19) control chamber B is connected with high pressure tank (14), and the high pressure gas in relay valve (19) inlet chamber A is filled with rapidly outlet chamber
C, and pass through the air spring (6) that check valve (18) are filled with the relatively low side of vehicle body, increase the vehicle body of the relatively low side of vehicle body；
The air spring (6) of the higher side of vehicle body of electronic control unit (4) control simultaneously is deflated, and the vehicle of the higher side of vehicle body is reduced
Height degree；
Left and right sides bodywork height balance is detected by height sensor (2), stops the inflation/deflation of air spring (6).
10. the control method of suspension system according to claim 8, which is characterized in that electronic control unit (4) root
The step of whether tire is blown out and controlled judged according to the tyre pressure that detection device detects specifically:
The vehicle speed sensor (1) of the detection device detects car speed, when vehicle is kept in motion, device for monitoring tyre pressure
(3) it will test present tire pressure and be sent to the electronic control unit (4) of vehicle；
The electronic control unit (4) carries out processing calculating according to tire pressure signal and bodywork height signal, if wheel tire pressure
The change rate of power is greater than preset value m, while the change rate of bodywork height is greater than preset value n, and electronic control unit (4) judges vehicle
It blows out；
The control chamber B that the electronic control unit (4) controls the relay valve (19) for wheel of blowing out is connected to high pressure tank (14),
High pressure gas in inlet chamber A is filled with rapidly outlet chamber C, and the air spring (6) for wheel of blowing out is filled with by check valve 18, makes
The bodywork height of reduction of blowing out rises rapidly；
The electronic control unit (4) controls the control chamber B and high pressure tank of the relay valve (19) of remaining wheel of not blowing out
(14) it is not connected to, control solenoid valve makes remaining air spring (6) to deflate, and reduces bodywork height above wheel of not blowing out；
Bodywork height above each wheel is detected by height sensor (2), until bodywork height reaches balance, controls air spring
(6) stop inflation/deflation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910205696.4A CN110001338B (en) | 2019-03-18 | 2019-03-18 | Suspension system and method and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910205696.4A CN110001338B (en) | 2019-03-18 | 2019-03-18 | Suspension system and method and vehicle |
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| CN110001338B CN110001338B (en) | 2022-02-15 |
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| CN111645473A (en) * | 2019-08-27 | 2020-09-11 | 西华大学 | Novel truck suspension becomes rigidity supplementary device |
| CN112238725A (en) * | 2019-09-16 | 2021-01-19 | 吉林大学 | Thrust vector-based suspension spring failure emergency protection control system and method |
| CN112660190A (en) * | 2021-01-04 | 2021-04-16 | 中车青岛四方车辆研究所有限公司 | System and method for adjusting working height of vehicle body of railway vehicle and railway vehicle |
| CN112677727A (en) * | 2020-12-31 | 2021-04-20 | 华人运通(江苏)技术有限公司 | Control method for vehicle body height compensation of semi-active suspension |
| CN113844228A (en) * | 2021-10-22 | 2021-12-28 | 岚图汽车科技有限公司 | Safety control system and control method for vehicle after tire burst |
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