CN202413908U - Air pressure and hydraulic pressure power-assisted steering system - Google Patents
Air pressure and hydraulic pressure power-assisted steering system Download PDFInfo
- Publication number
- CN202413908U CN202413908U CN2011204995167U CN201120499516U CN202413908U CN 202413908 U CN202413908 U CN 202413908U CN 2011204995167 U CN2011204995167 U CN 2011204995167U CN 201120499516 U CN201120499516 U CN 201120499516U CN 202413908 U CN202413908 U CN 202413908U
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- way valve
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- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000003860 storage Methods 0.000 claims abstract description 28
- 239000002828 fuel tank Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 239000007858 starting material Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 12
- 230000001143 conditioned effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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- Steering Control In Accordance With Driving Conditions (AREA)
- Power Steering Mechanism (AREA)
Abstract
The utility model relates to an air pressure and hydraulic pressure power-assisted steering system. The system comprises an inflating pump, a gas storage bag connected with the output end of the inflating pump, a detection device and a control device which is connected with the detection device in a controlling mode, wherein an output end of the gas storage bag is connected with an inlet of a two-position three-way valve; two outlets of the two-position three-way valve are connected with a gas-liquid converter respectively; the two-position three-way valve is an electromagnetic valve and is connected with a control output end of the control device; a hydraulic outlet of the gas-liquid converter is connected with a steering device in a controlling mode, and a hydraulic inlet of the gas-liquid converter is connected with an oil tank; and a check valve is arranged between the gas-liquid converter and the oil tank. An air pressure and hydraulic pressure mixed steering mode is used in the air pressure and hydraulic pressure power-assisted steering system, and air pressure operation is generated due to the inflation of the inflating pump, so that a hydraulic pump is thoroughly disconnected from an engine, the conventional hydraulic pressure power-assisted steering power source is changed, the waste of gas sources is prevented when gas is not required to be used by the whole vehicle, and the load of a starter of the engine is reduced; and the conventional power-assisted steering actuation mechanism is fully utilized.
Description
Technical field
The utility model relates to a kind of gas-liquid and presses servo steering system.
Background technology
Traditional automobile hydraulic electric power steering system is generally by component set-ups such as Hydraulic Pump, low/high pressure fuel pipe, pressure flow control valve body, driving band, petrol storage tank and steering boxs; Its assist characteristic is relevant with load of vehicle propons and deflection angle, and working process is following: the work of (1) engine drives hydraulic oil pump is to the system outlet pressure oil; (2) after system oil pressure reaches a certain threshold value, the Hydraulic Pump pressure release; (3) in the process of pressure release, Hydraulic Pump works on, and makes the oil pressure of whole high-pressure oil passage maintain a certain preset value; (4) engine stop working, then system's power steering disappears.
Through analyzing the following shortcoming that can find out that above-mentioned steering swivel system exists: (1) is as long as engine running; No matter whether vehicle needs power steering; Steering boost system is just in running order always, and the load that has increased driving engine has also influenced the heat-sinking capability of Hydraulic Pump simultaneously; (2) power steerig pump is equipped with blowdown valve, and blowdown valve was opened pressure release when pressure surpassed setting threshold, thereby caused the waste to energy; (3) the in running order all the time oil pressure that causes in the total system in the pipeline and parts of Hydraulic Pump is higher, and there is certain influence in life-span of total system; (4) only relevant with steering load and the speed of a motor vehicle of cornering properties has nothing to do, and turns to effort when causing low speed, turns to unstable phenomenon during high speed, and traffic safety is had certain influence; (5) this system adopts hydraulic pressure as power-steering propulsion source, as long as engine running, inflation pump is in running order all the time; When not using car load gas; Can discharge automatically when gas reaches 8 pressures, cause certain energy dissipation, increase the load of engine starter.
One Chinese patent application numbers 201010226233.5 discloses the patent document that name is called " automobile and electric hydraulic power-assisted steering system thereof, control method "; This steering swivel system is with Hydraulic Pump of a driven by motor; Hydraulic Pump pressure oil output, pressure oil are stored in 6 the insides, and turning to actuating unit also is independent design-calculated; Its shortcoming is: (1) turns to actuating unit is through independent particular design, bigger to the change of existing steering swivel system; (2) because the particular design of steering jack structure steering reversal ability when causing whole steering swivel system low speed; (3) this system adopts hydraulic pressure as power-steering propulsion source, can't use vehicle-borne pressure system.
The utility model content
The purpose of the utility model provides a kind of gas-liquid and presses servo steering system, to solve problems such as having the hydrostatic steering system energy dissipation now.
For realizing above-mentioned purpose; The utility model adopts following technical scheme: a kind of gas-liquid is pressed servo steering system; Comprise inflation pump and mouth bonded assembly gas storage bag thereof; Comprise that also detecting device reaches and the control setup of its control linkage, said detecting device is respectively applied for the rotation sensor that obtains from steering wheel angle, the signal that is used to obtain the car speed sensor of the speed of a motor vehicle and is used to obtain the pressure sensor of oil pressure in the air-liquid converter; The mouth of said gas storage bag links to each other with the import of a two-position three-way valve, and two outlets of two-position three-way valve connect an air-liquid converter separately, and said two-position three-way valve is an electromagnetic valve, and with the control output end control linkage of control setup; The hydraulic pressure outlet and the deflector control linkage of said air-liquid converter, the hydraulic inlet of air-liquid converter is connected with fuel tank, is provided with check valve between said air-liquid converter and the fuel tank.
Be provided with electromagnetic switch valve between said inflation pump and the gas storage bag, the control output end control linkage of said electromagnetic switch valve and control setup.
Be provided with the flow regulating valve that is used to control air pressure between said gas storage bag and the two-position three-way valve.
The gas-liquid of the utility model presses servo steering system to adopt gas-liquid to press the mixing servo-steering; Adopt inflation pump to inflate the generation pressure work; Thoroughly cut off the contact between Hydraulic Pump and the driving engine, changed the power-steering propulsion source of conventional hydraulic, prevented when not needing car load usefulness gas, to occur the source of the gas waste; Reduce the load of engine starter, and made full use of traditional power-steering actuating unit.
Electromagnetic switch valve with the control output end control linkage of control setup is set between inflation pump and gas storage bag, with air pressure that inflation pump produced through the 2/2-way valve flow to the gas storage bag, make the air pressure of gas storage bag be unlikely to flow backwards.
Between gas storage bag and two-position three-way valve, be provided for controlling the flow regulating valve of air pressure, to regulate the size of output tolerance from the gas storage bag.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Be illustrated in figure 1 as the utility model gas-liquid and press the structural representation of servo steering system specific embodiment; Can know by figure; This system comprises inflation pump 1 and mouth bonded assembly gas storage bag 3 thereof; Also comprise detecting device 12 and with the control setup 11 of its control linkage, the signal of the pressure sensor 7 that said detecting device is respectively applied for the rotation sensor that obtains from steering wheel angle, be used to obtain the car speed sensor of the speed of a motor vehicle and be used to obtain oil pressure in the air-liquid converter; The mouth of gas storage bag 3 links to each other with the import of a two-position three-way valve 5, and two outlets of two-position three-way valve connect an air-liquid converter 6 separately, and said two-position three-way valve is an electromagnetic valve, and with the control output end control linkage of control setup 11; The hydraulic pressure outlet and deflector 10 control linkages of air-liquid converter 6; The hydraulic inlet of air-liquid converter 6 is connected with fuel tank 8; Be provided with check valve 9 between air-liquid converter and the fuel tank; To prevent the hydraulic oil backflow fuel tank in the air-liquid converter, cause power steering moment to reduce, thereby influence driver's nimble property of operation and ride comfort.
Be further optimization, the electromagnetic switch valve 2 with the control output end control linkage of control setup 11 be set between inflation pump 1 and gas storage bag 3, with air pressure that inflation pump produced through the 2/2-way valve flow to the gas storage bag, make the air pressure of gas storage bag be unlikely to flow backwards.
Between gas storage bag 3 and two-position three-way valve 5, be provided for controlling the flow regulating valve 4 of air pressure, to regulate the size of output tolerance from the gas storage bag.
The inflation pump 1 of the utility model drives inflation pump 1 work by engine control work, produces air pressure; The air pressure that inflation pump 1 is produced flows to gas storage bag 3 through electromagnetic switch valve 2, makes the air pressure of gas storage bag be unlikely to flow backwards; Air-liquid converter 6 storages contract out the high pressure gas that come from gas storage and when turning to work, output to the deflector 10; Said detecting device is used to obtain rotation sensor (not shown) from steering wheel angle, be used to obtain the car speed sensor (not shown) of the speed of a motor vehicle and be used to obtain the signal of the pressure sensor 7 of oil pressure in the air-liquid converter 6; Control setup gathers the controlled variable that turns to of self-test device in real time; According to control logic preset in the control setup and control threshold value output control command, and the control threshold value is come real-time calibration according to a kind of in GES, preceding axle load, steering wheel angle signal and the air-liquid converter pressure signal at least; Control setup accepts that said detecting device obtains turns to the controlled variable signal, and controls two-position three-way valve 5 and electromagnetic switch valve 2 work according to pre-conditioned definite output appropriate control signal.
The air-liquid converter 6 of the utility model and deflector 10 are connected through high pressure fuel pipe, and the energy in the air-liquid converter 6 can temporarily satisfy power steering demand to a certain extent, and not needing separately in the native system, design turns to actuating unit.
The gas-liquid of the utility model presses the primary mover of servo steering system to remain driving engine; Mean that this cover system can use and having on the vehicle of driving engine; For pure electric automobile and trackless trolley car can using of electronic inflation pump is installed, and unnecessary air pressure has carried out recovery, huge profit is used to producing on the car load.
The mouth of the two-position three-way valve 5 in the present embodiment adopts two-way output, promptly has two cover air-liquid converters and supporting pipeline thereof and is connected with fuel tank with deflector respectively.
Principle of work of the present invention: adopt control setup that the pressure control threshold value in the air-liquid converter that collects is made as value range; And switching on and off according to pre-conditioned definite output appropriate control signal control two-position three-way valve; Specifically pre-conditioned is: control setup is in real time according to detected GES of detecting device and the required oil pressure threshold value of steering wheel angle calculated signals; Oil pressure in more required oil pressure threshold value and the air-liquid converter, and whether acquisition exports the judged result of control signal.If it is low that comparative result is lower than the pressure that lower limit then characterizes in the air-liquid converter, then function unit output control command starts two-position three-way valve 5 and electromagnetic switch valve 2 work; If relatively to be higher than the pressure that higher limit then characterizes in the air-liquid converter high for comparative result, then function unit output control command stops two-position three-way valve 5 and electromagnetic switch valve 2 work.
Claims (3)
1. a gas-liquid is pressed servo steering system; It is characterized in that: comprise inflation pump and mouth bonded assembly gas storage bag thereof; Comprise that also detecting device reaches and the control setup of its control linkage, said detecting device is respectively applied for the rotation sensor that obtains from steering wheel angle, the signal that is used to obtain the car speed sensor of the speed of a motor vehicle and is used to obtain the pressure sensor of oil pressure in the air-liquid converter; The mouth of said gas storage bag links to each other with the import of a two-position three-way valve, and two outlets of two-position three-way valve connect an air-liquid converter separately, and said two-position three-way valve is an electromagnetic valve, and with the control output end control linkage of control setup; The hydraulic pressure outlet and the deflector control linkage of said air-liquid converter, the hydraulic inlet of air-liquid converter is connected with fuel tank, is provided with check valve between said air-liquid converter and the fuel tank.
2. gas-liquid according to claim 1 is pressed servo steering system, it is characterized in that: be provided with electromagnetic switch valve between said inflation pump and the gas storage bag, the control output end control linkage of said electromagnetic switch valve and control setup.
3. gas-liquid according to claim 1 and 2 is pressed servo steering system, it is characterized in that: be provided with the flow regulating valve that is used to control air pressure between said gas storage bag and the two-position three-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204995167U CN202413908U (en) | 2011-12-05 | 2011-12-05 | Air pressure and hydraulic pressure power-assisted steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204995167U CN202413908U (en) | 2011-12-05 | 2011-12-05 | Air pressure and hydraulic pressure power-assisted steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202413908U true CN202413908U (en) | 2012-09-05 |
Family
ID=46738695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204995167U Withdrawn - After Issue CN202413908U (en) | 2011-12-05 | 2011-12-05 | Air pressure and hydraulic pressure power-assisted steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202413908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431588A (en) * | 2011-12-05 | 2012-05-02 | 郑州宇通客车股份有限公司 | Pneumatic and hydraulic power-assisted steering system |
-
2011
- 2011-12-05 CN CN2011204995167U patent/CN202413908U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431588A (en) * | 2011-12-05 | 2012-05-02 | 郑州宇通客车股份有限公司 | Pneumatic and hydraulic power-assisted steering system |
| CN102431588B (en) * | 2011-12-05 | 2013-03-13 | 郑州宇通客车股份有限公司 | Pneumatic and hydraulic boosted steering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120905 Effective date of abandoning: 20130313 |
|
| RGAV | Abandon patent right to avoid regrant |