CN107444054A - Auxiliary aerating device applied to air suspension - Google Patents

Auxiliary aerating device applied to air suspension Download PDF

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Publication number
CN107444054A
CN107444054A CN201710523878.7A CN201710523878A CN107444054A CN 107444054 A CN107444054 A CN 107444054A CN 201710523878 A CN201710523878 A CN 201710523878A CN 107444054 A CN107444054 A CN 107444054A
Authority
CN
China
Prior art keywords
air
cylinder
valve
transition
suspension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710523878.7A
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Chinese (zh)
Inventor
马世典
高宁欣
江浩斌
韩牟
徐兴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu University
Original Assignee
Jiangsu University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu University filed Critical Jiangsu University
Priority to CN201710523878.7A priority Critical patent/CN107444054A/en
Publication of CN107444054A publication Critical patent/CN107444054A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/016—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 their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B60G17/0165—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 their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
    • B60G17/0155—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit pneumatic unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/018—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/15—Fluid spring
    • B60G2202/152—Pneumatic spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90—System Controller type
    • B60G2800/91—Suspension Control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention discloses the auxiliary aerating device applied to air suspension, including：Electric control part：It is controlled by the pressure sensor in transition air chamber and gas cylinder, vehicle-mounted middle control computer ECU, and collectively constituting active control system with unidirectional valve control completes.Vehicle-mounted middle control computer ECU after the formula pre-entered is calculated, completes the control for the opening and closing of check valve everywhere in pressure sensor returned data.Mechanical part：Mainly it is made up of cylinder, piston and transition air chamber, each part is attached using flexible pipe and check valve, in auxiliary aerating device, check valve is connected at valve two with the external world to be connected, check valve is connected at valve one with the air admission hole of transition air chamber to be connected, the valve three of transition air chamber is connected in original inflation system by check valve, and the valve four fundamental rules of transition air chamber are connected to air by check valve.Device of the present invention, to provide extra inflation system using the vehicle of air suspension, can reduce energy consumption in the case where not changing car body profile.

Description

Auxiliary aerating device applied to air suspension
Technical field
The invention belongs to automobile technical field, more particularly to a kind of auxiliary aerating device applied to air suspension, it is used for Caused energy expenditure and caused noise when reducing conventional motors inflation.
Background technology
External advanced motor bus almost all uses air suspension at present, and heavy duty truck has used the ratio of air suspension Up to more than 80%, application amount of the air suspension on light-duty vehicle is also rising rapidly.Part car also gradually installs and uses sky The Lincoln of gas suspension, such as U.S..In some special vehicles (such as to the shockproof higher measuring truck, ambulance, extraordinary military of requiring Car and container carrier of requirement height regulation etc.) on, the use of air suspension is almost unique selection.Foreign Automobile air " leaf spring → air bag compound suspension → passive complete full air suspension of air suspension → active is (i.e. for suspension development experience ECAS electronic control air suspensions system) " change type.Actively full air suspension applies electronic control system, makes traditional sky The performance of gas suspension system is greatly improved, and automobile can realize actively regulation, active under various road surfaces, various working conditions Control, and add many miscellaneous functions (such as fault diagnosis functions).ECAS systems are in some European national bus at present Widely applied on car, as the improvement of people's living standards, the requirement more and more higher to car comfort, it is contemplated that This applications of advanced airsuspension system on automobile of ECAS will be popularized increasingly.
Gas spring is to replace metal spring using the compressibility of gas.Its biggest advantage be exactly have it is variable firm Degree, rigidity is gradually increased with the continuous compression of gas, and this increase is a continuous progressive formation, rather than metal spring It is changed in stages.Its another advantage be with adjustable, i.e., the rigidity of spring and the height of vehicle body be can be actively Regulation.
By being used cooperatively for major-minor air chamber, spring is set to be in the working condition of two kinds of rigidity：Major-minor air chamber is same When use, gas capacity becomes big, and rigidity diminishes, otherwise (only use main gas tank) then rigidity becomes greatly.The stiffness of air spring is by calculating Machine controls, and under the states such as automobile high-speed, low speed, braking, acceleration and turning, is adjusted according to required rigidity.Gas bullet Spring also has weakness, and air pressure variations control overall height must be provided with electric air pump, also various control annexes, such as be air-dried Device, as maintenance is not good at internal system can be made to get rusty breaking down.If asynchronously using metal spring in addition, once leak Gas, automobile will be unable to travel.
The content of the invention
Servicing unit proposed by the present invention is passed through using an aerating device being connected between vehicle frame and suspension lower end Flexible pipe connects one-way control valve to gas cylinder, makes vehicle by uneven road surface and Ackermann steer angle, can be by auxiliary Aerating device is helped to be inflated to gas cylinder.
To achieve these goals, the present invention adopts the following technical scheme that：A kind of auxiliary applied to air suspension vehicle Aerating device, including cylinder, piston, transition air chamber；The cylinder and piston are individually fixed in suspension lower end and vehicle body, both The main part of the aerating device is collectively formed, piston is located at cylinder interior and can be with respect to cylinder block stretching motion；Cylinder leads to Cross flexible pipe and be connected to transition air chamber, original inflation system is connected to by transition air chamber, junction is controlled using check valve, is filled Gas is stored in gas cylinder, is inflated for air-suspension bellows.
Auxiliary aerating device is arranged between automotive suspension and vehicle body in the present invention.This design need not change existing Car conour, the use of automobile will not be brought inconvenience.
Heretofore described piston, in motion because of big energy caused by jolting, is entered effectively using automobile as gas cylinder Row inflation, the design of transition air chamber enable energy farthest to be utilized, while solve and do not need system work When exhausting problem.
The present invention has following effective effect：
1. device of the present invention can be in the case where not changing car body profile, to be provided using the vehicle of air suspension Extra inflation system, reduce energy consumption.
2. device of the present invention realizes the recovery of portion of energy, reduce noise when being inflated using electric air pump, carry Height is experienced by bus.
3. apparatus structure of the present invention is simple, cost is cheap, easy for installation, versatile, before there is good market Scape.
Brief description of the drawings
Fig. 1 is the design drawing of cylinder and piston in auxiliary aerating device of the present invention.
Fig. 2 is the design drawing of the transition air chamber of auxiliary aerating device of the present invention.
Fig. 3 is the connection effect figure of auxiliary aerating device application of the present invention.
Fig. 4 is control flow chart of the present invention when road conditions are jolted.
Fig. 5 is control flow chart of the present invention when road conditions are steady.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to this.
The system is applied to vehicle active control type air suspension.Including：
Electric control part：It is controlled by the pressure sensor in transition air chamber and gas cylinder, vehicle-mounted middle control computer ECU, Active control system is collectively constituted with unidirectional valve control to complete.Vehicle-mounted middle control computer ECU passes through in pressure sensor returned data Cross after the formula pre-entered calculated, complete the control for the opening and closing of check valve everywhere.
Mechanical part：Mainly it is made up of cylinder, piston and transition air chamber, each part is connected using flexible pipe and check valve Connect, connect check valve in auxiliary aerating device, at valve two is connected with the external world, and the air inlet of check valve and transition air chamber is connected at valve one Hole is connected, and the valve three of transition air chamber is connected in original inflation system by check valve, and the valve four fundamental rules of transition air chamber pass through list Air is connected to valve.
Workflow is sketched：
With reference to part component, cylinder is bolted with cylinder head, is fixed on vehicle body, and piston is fixed on suspension lower end. During vehicle jolts, when vehicle body increases with suspension distance, piston is moved down, and the check valve of valve two is opened, and sucks air, when outstanding When frame reduces with vehicle body distance, the closed check valve of valve two, piston is compressed to the air in cylinder, when air pressure in aerating device During more than transition air chamber air pressure, check valve at valve one is opened, and cylinder connects transition air chamber to transition chamber inflated from valve one, Transition air chamber links to electric air pump filling channel by flexible pipe, when air pressure is more than the air pressure p in gas cylinder in transition air chamber2When, The check valve (check valve connected at valve three) of transition air chamber is opened, and transition air chamber completes workflow, when not to inflating gas cylinder When needing to use the accessory system to inflate, the vent valve (check valve that valve connects everywhere) for controlling transition air chamber by ECU is opened, discharge Gas.
Control flow is sketched：
The rigidity of air-suspension bellows determines by the gas flow in air bag, rigidity needed for air bag by vehicle current driving road Condition, passenger is for a series of demand conditions such as the demand of level of comfort.So gas cylinder should meet the inflation of air bag at any time Amount.The tolerance corresponding to air pressure in gas cylinder needs the inflation needs for meeting air bag at any time.Meeting that Minimum requirements air pressure is gentle When between the safe air pressure of highest of bottle, stop electric air pump inflation, using supplemental inflatable system to inflating gas cylinder.
1st, when road conditions are bad, and vehicle traveling is jolted, auxiliary aerating device work, to transition chamber inflated.Specifically Ground：
(1) pressure sensor detects gas cylinder air pressure and is equal to P1When, the check valve of shutoff valve 1, discharged and aided in by transition air chamber Gas caused by aerating device.
(2) pressure sensor detects gas cylinder air pressure and is more than P2When, motor is closed, only using auxiliary aerating device to gas Bottle is inflated.
(3) pressure sensor detects air pressure in gas cylinder and is less than P2When, start motor, by auxiliary aerating device with it is electronic Air pump is inflated to gas cylinder simultaneously.
2nd, in vehicle smooth ride, when auxiliary aerating device can not effectively work, pressure sensor detects gas cylinder Middle air pressure is less than P2, it is inflating gas cylinder to enable electric air pump immediately.
It is described as follows on air pressure size in said process：
With PmidFor current air bag pressure, VmidFor current bag volume, PmaxFor air bag maximum gas pressure, VmaxIt is maximum for air bag Volume, then need the gas cylinder air pressure P ensured2It is required to ensure air bag from air pressure PmidIt is inflated to air pressure Pmax.Gas cylinder holds Product is VBottle, the highest air pressure that gas cylinder can accommodate is P1.R is the gas constant of every kg perfect gases, and T is gas temperature；n1Table Show the amount of current state gaseous matter in air bag.n2Represent the amount of gaseous matter during air pressure highest in air bag.
PmidVmid=n1RT
PmaxVmax=n2RT
In the case where R and T are constant, required aeration quantity is
n2-n1=[PmaxVmax-PmidVmid]/RT
Now, gas cylinder at least needs P2It is reduced to PmaxAeration quantity.
P2VBottle-PmaxVBottle=PmaxVmax-PmidVmid
So P2=[PmaxVmax-PmidVmid]/[VBottle-Vmax]
In addition, the auxiliary aerating device should also be noted that in design：
The moveable distance of piston should be determined by the design limit relative displacement of vehicle in inflation system, the position of piston The extreme displacement distance between vehicle body and suspension is should be slightly bigger than with the distance of cylinder head.
The sectional area of cylinder influences producible maximum pressure in cylinder with movable distance, and this pressure should be made to be more than etc. In the maximum gas pressure of gas cylinder.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention Or change should be included in the scope of the protection.

Claims (10)

1. the auxiliary aerating device applied to air suspension, it is characterised in that including cylinder, piston, transition air chamber；The piston Positioned at the cylinder interior and stretching motion can be done with respect to cylinder；The cylinder is connected with the transition air chamber；The cylinder Coordinating with the piston can suck in gas to cylinder, and the gas in the cylinder can be transported to the transition air chamber, The inflation system of air suspension is sent into after the transition air chamber to inflating gas cylinder.
2. the auxiliary aerating device according to claim 1 applied to air suspension, it is characterised in that the cylinder of the cylinder Cover and be provided with valve one and valve two；The valve two is used to suck in gas to cylinder；The valve one is used for the gas in cylinder is defeated Deliver to transition air chamber.
3. the auxiliary aerating device according to claim 2 applied to air suspension, it is characterised in that the transition air chamber One end is provided with air admission hole, the other end is provided with valve three and valve four；The valve one of the air admission hole connection cylinder head；The valve three and air The inflation system connection of suspension；The valve four connects air.
4. the auxiliary aerating device according to claim 1 applied to air suspension, it is characterised in that also including automatically controlled system System；The electric-control system includes controller, pressure sensor and valve control；The pressure sensor hangs for detecting air Pressure condition in the gas cylinder of frame inflation system；The situation that the controller detects according to pressure sensor, passes through valve control Control whether to open auxiliary aerating device.
5. the auxiliary aerating device according to claim 4 applied to air suspension, it is characterised in that the controller is adopted Realized with vehicle-mounted ECU.
6. according to the auxiliary aerating device applied to air suspension described in claim any one of 1-5, it is characterised in that described Auxiliary aerating device is arranged between suspension and vehicle body.
7. according to the auxiliary aerating device applied to air suspension described in claim any one of 1-5, it is characterised in that described The distance of the location of piston range and cylinder head is slightly larger than the extreme displacement distance between vehicle body and suspension.
8. according to the auxiliary aerating device applied to air suspension described in claim any one of 1-5, it is characterised in that described In cylinder can caused by maximum pressure be more than or equal to gas cylinder maximum gas pressure.
9. the supplemental inflatable method applied to air suspension, it is characterised in that during vehicle jolts, vehicle body and suspension distance During increase, cylinder piston is moved down, and check valve two is opened, and sucks air；When suspension and vehicle body distance reduce, check valve two closes Close, piston is compressed to the air in cylinder, and when air pressure is more than transition air chamber air pressure in cylinder, check valve one is opened, gas The air admission hole that cylinder is connected transition air chamber from check valve one is connected to electric air pump to transition chamber inflated, transition air chamber by flexible pipe Filling channel, when air pressure is more than the air pressure p in gas cylinder in transition air chamber2When, the check valve three of transition air chamber is opened, transition air chamber To inflating gas cylinder；When servicing unit need not be used to inflate, opened, arranged by the check valve four of electric control system controls transition air chamber Go out gas.
10. the supplemental inflatable method according to claim 9 applied to air suspension, it is characterised in that the tool of institute's method Body process is as follows：
(1) when road conditions are bad, and vehicle traveling is jolted, auxiliary aerating device work, to transition chamber inflated；
1) pressure sensor detects gas cylinder air pressure and is equal to P1When, check valve three is closed, supplemental inflatable system is discharged by transition air chamber Caused gas；
2) when pressure sensor detects gas cylinder air pressure and is less than P1 more than P2, motor is closed, only utilizes auxiliary aerating device pair Gas cylinder is inflated；
3) pressure sensor detects air pressure in gas cylinder and is less than P2When, start motor and auxiliary aerating device, filled by supplemental inflatable Put and gas cylinder is inflated simultaneously with motor；
(2) in vehicle smooth ride, when servicing unit can not effectively work, it is low that pressure sensor detects air pressure in gas cylinder In P2When, it is inflating gas cylinder to enable motor.
CN201710523878.7A 2017-06-30 2017-06-30 Auxiliary aerating device applied to air suspension Pending CN107444054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710523878.7A CN107444054A (en) 2017-06-30 2017-06-30 Auxiliary aerating device applied to air suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710523878.7A CN107444054A (en) 2017-06-30 2017-06-30 Auxiliary aerating device applied to air suspension

Publications (1)

Publication Number Publication Date
CN107444054A true CN107444054A (en) 2017-12-08

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CN201710523878.7A Pending CN107444054A (en) 2017-06-30 2017-06-30 Auxiliary aerating device applied to air suspension

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108705909B (en) * 2018-03-28 2021-05-25 江苏大学 Air suspension system giving consideration to energy conservation and stability and control method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203093670U (en) * 2013-01-25 2013-07-31 中国公路车辆机械有限公司 Passenger car pneumatic suspension control system
CN103241097A (en) * 2013-05-23 2013-08-14 江苏大学 Self-pressurized device with high pressure chamber and low pressure chamber of closed air loop air suspension system
CN103253099A (en) * 2013-05-23 2013-08-21 江苏大学 Closed loop gas circuit air suspension system with self-pressurization mechanism
CN103253100A (en) * 2013-05-23 2013-08-21 江苏大学 Booster cavity and high-pressure cavity integrated type closed-loop gas path air suspension system
CN106427456A (en) * 2016-07-26 2017-02-22 江苏大学 Self-pressurization system for high-low pressure cavity closed-loop gas circuit air suspension system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203093670U (en) * 2013-01-25 2013-07-31 中国公路车辆机械有限公司 Passenger car pneumatic suspension control system
CN103241097A (en) * 2013-05-23 2013-08-14 江苏大学 Self-pressurized device with high pressure chamber and low pressure chamber of closed air loop air suspension system
CN103253099A (en) * 2013-05-23 2013-08-21 江苏大学 Closed loop gas circuit air suspension system with self-pressurization mechanism
CN103253100A (en) * 2013-05-23 2013-08-21 江苏大学 Booster cavity and high-pressure cavity integrated type closed-loop gas path air suspension system
CN106427456A (en) * 2016-07-26 2017-02-22 江苏大学 Self-pressurization system for high-low pressure cavity closed-loop gas circuit air suspension system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108705909B (en) * 2018-03-28 2021-05-25 江苏大学 Air suspension system giving consideration to energy conservation and stability and control method thereof

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Application publication date: 20171208

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