CN201405919Y - Power-assisted steering system for electronic pneumatic automobile - Google Patents
Power-assisted steering system for electronic pneumatic automobile Download PDFInfo
- Publication number
- CN201405919Y CN201405919Y CN2009200851944U CN200920085194U CN201405919Y CN 201405919 Y CN201405919 Y CN 201405919Y CN 2009200851944 U CN2009200851944 U CN 2009200851944U CN 200920085194 U CN200920085194 U CN 200920085194U CN 201405919 Y CN201405919 Y CN 201405919Y
- Authority
- CN
- China
- Prior art keywords
- control unit
- steering system
- air pressure
- solenoid directional
- directional control
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The utility model relates to a power-assisted steering system for electronic pneumatic automobile, which comprises a steering wheel, a rotation angle sensor, a torque sensor and an electronic controlunit, wherein the steering wheel is connected with the rotation angle sensor and the torque sensor, the rotation angle sensor and the torque sensor are connected with the electronic control unit, theelectronic control unit is connected with a three-position cross electromagnetic change-over valve and a stepper motor, and the three-position cross electromagnetic change-over valve is connected withan air pressure cylinder. The electronic control unit transmits executing signals to the stepper motor and the three-position cross electromagnetic change-over valve after making judgment through analyzing and calculating data input by a sensor, and is used on the air pressure cylinder through controlling gas flow capacity and flow direction, thereby achieving power-assisted steering.
Description
Technical field
The utility model relates to a kind of automobile steering system, specifically a kind of automobile assisted power steering system of electron gas pressure-controlled.
Background technology
There are three kinds of mechanical-hydraulic, electro-hydraulic and electronics power (EPS) in automobile power steering system in the market.Whether the Hydraulic Pump of mechanical hydraulic-pressure type needs dynamo belt to drive, under the situation of engine operation, no matter need to turn to, and this cover system all will be worked, and energy consumption is bigger, under the out-of-run situation of driving engine, does not have the servo-steering function; Need the cleanliness level or the replacing of periodic inspection hydraulic oil, and hydraulic oil is slow in reacting easily freezes under low temperature environment; The pressure of Hydraulic Pump is very big, than being easier to damage force aid system.The Hydraulic Pump that the electro-hydraulic formula is adopted is no longer driven by dynamo belt, but adopt a motor-drive pump, its all mode of operation all is the perfect condition that electronic control unit goes out according to calculated signals such as the speed of a motor vehicle, deflection angles, export a desirable torque force again, can reduce a part of energy consumption with respect to mechanical hydraulic-pressure type, but have the shortcoming of hydraulic efficiency pressure system aspect equally.Electronics dynamical type (EPS) by electronic control unit according to signals such as the speed of a motor vehicle, deflection angles through calculating, control motor output torque power is quick on the draw, sense of direction is good, and is more steady during high speed, but the torque force that provides is too little, can only be used for automobile with small output volume.
Summary of the invention
The utility model purpose just is to overcome the shortcoming of above-mentioned servo steering device, and a kind of cost performance height is provided, environmental protection and easy to operate electron gas pressure-controlled servo steering device.
Realize that the technical scheme that the utility model purpose adopts is: a kind of electronics air pressure automobile assisted power steering system, comprise bearing circle, rotary angle transmitter, torque sensor and electronic control unit, bearing circle is connected with torque sensor with rotary angle transmitter, rotary angle transmitter is connected with electronic control unit with torque sensor, electronic control unit is connected with stepping motor with the 3-position 4-way solenoid directional control valve, and the 3-position 4-way solenoid directional control valve is connected to air cylinder.
The step size of described stepping motor is 7 °.
Between described 3-position 4-way solenoid directional control valve and the cylinder shuttle valve is housed.Between 3-position 4-way solenoid directional control valve and the air-flow pneumatic triple piece is housed.Pressurize cylinder and safety valve are housed between 3-position 4-way solenoid directional control valve and the pneumatic triple piece.
This electronics air pressure automobile assisted power steering system is based on the electrical power steering system, " the electric mechanical power steering electrical motor " of electrical power steering system changed into the pressure system of native system, utilize compression pressure to promote the double acting air cylinder and realize turning to function, stepping motor is connected with the outlet line of electronic control unit, electronic control part is identical with the power-assisted principle of electronic type, as: speed sensor, torque sensor, rotary angle transmitter and control unit etc.The data that the utility model imports into according to sensor, electronic control unit (ECU) carries out analytical calculation, judges, signal be will carry out and stepping motor and three position four-way directional control valve will be transferred to, control gaseous flow and flow direction act on air cylinder, thereby realize power-steering purpose respectively.
The utility model goes out pressure system according to design of Hydraulic System, based on the principle of electrical power steering system, makes its motor portion into pressure system, still utilizes the electronic control system of primary electron dynamical type, promptly is quick on the draw and big torque force can be provided.Its pressure system adopts the double acting air cylinder that power is provided, low power step motor control gas delivery rate, the flow channel of solenoid electric valve control gaseous (left and right), and corresponding gas transmission pipeline, hard tube is selected copper pipe for use, flexible pipe is selected India rubber tube for use, and the brake system of gas storage device and former car is shared.
The utlity model has following beneficial effect:
1, the utility model need not hydraulic oil, adopts pressurized air, is not subjected to temperature limitation, and low temperature also can be quick on the draw, and acting back gas need not return gas storage device, directly gets rid of environmental protection;
2, the torsional forces that provides is big, can be applied to big discharge capacity vehicle;
3, the control unit of applying electronic power (EPS) can be exported desired torque power, and strong road feel is arranged, and makes driving happier;
4, cost is relatively low, and the cost performance height meets the requirement of car owner and manufacturer.
Description of drawings
Accompanying drawing is a structured flowchart of the present utility model.
The specific embodiment
Electronics air pressure automobile assisted power steering system structure as shown in drawings, comprise bearing circle, rotary angle transmitter, torque sensor and electronic control unit, bearing circle is connected with torque sensor with rotary angle transmitter, rotary angle transmitter is connected with electronic control unit with torque sensor, electronic control unit is connected with stepping motor with the 3-position 4-way solenoid directional control valve, and the 3-position 4-way solenoid directional control valve is connected to air cylinder.Between 3-position 4-way solenoid directional control valve and the cylinder shuttle valve is housed.Between 3-position 4-way solenoid directional control valve and the air-flow pneumatic triple piece is housed.Pressurize cylinder and safety valve are housed between 3-position 4-way solenoid directional control valve and the pneumatic triple piece.
Source of the gas flows into through flowing to safety valve by oil sprayer after the filtration from the water-separating gas filter of pneumatic triple piece, safety valve plays the safety guard-safeguard effect, when system pressure surpasses specified value, safety valve is opened, with a part of gas exhaust to atmosphere in the system, make system pressure be no more than permissible value, thereby the assurance system does not have an accident because of hypertonia; Flowing to the pressurize cylinder through behind the safety valve, the pressurize cylinder is in order to guarantee that power element has certain operating air pressure, is equivalent to L2 cache; Gas enters the Increment Type Digital Hydraulic flow valve after flowing out, this valve is by stepping motor drive work, stepping motor is directly controlled by data volume, its corner is that signal impulse is directly proportional with the numeral of input, its rotating speed changes with the impulse rate of input, the step size of stepping motor is 7 °, the flow of control gaseous; Solenoid directional control valve utilizes electromagnetic attraction to promote the control position that spool changes valve according to the signal of ECU input, and control gaseous flows to; After gas flows into, two shuttle valves " management " are arranged, flow into double-acting cylinder, shuttle valve and solenoid directional control valve are formed the locking loop jointly, when power element is not worked, cut off its turnover gas circuit, and it is rested on the original position accurately.Adopt flexible pipe to connect in the junction of above mechanical element with hard tube, the flexible pipe India rubber tube, hard tube adopts copper pipe, the connection of pure machinery.
The data that speed sensor, torque sensor and rotary angle transmitter import into, carry out analytical calculation through electronic control unit, judge, signal be will carry out and stepping motor and three position four-way directional control valve will be transferred to, the flow of step motor control gas, the flow direction of three position four-way directional control valve control gaseous acts on air cylinder, thereby realizes servo-steering.
Claims (5)
1. electronics air pressure automobile assisted power steering system, comprise bearing circle, speed sensor, rotary angle transmitter, torque sensor and electronic control unit, bearing circle is connected with torque sensor with rotary angle transmitter, speed sensor, rotary angle transmitter and torque sensor are connected with electronic control unit, it is characterized in that: electronic control unit is connected with stepping motor with the 3-position 4-way solenoid directional control valve, and the 3-position 4-way solenoid directional control valve is connected to the double acting air cylinder.
2. electronics air pressure automobile assisted power steering system according to claim 1 is characterized in that: between 3-position 4-way solenoid directional control valve and the cylinder shuttle valve is housed.
3. electronics air pressure automobile assisted power steering system according to claim 1 is characterized in that: between 3-position 4-way solenoid directional control valve and the air-flow pneumatic triple piece is housed.
4. according to claim 1 or 3 described electronics air pressure automobile assisted power steering systems, it is characterized in that: pressurize cylinder and safety valve are housed between 3-position 4-way solenoid directional control valve and the pneumatic triple piece.
5. electronics air pressure automobile assisted power steering system according to claim 1 is characterized in that: the step size of stepping motor is 7
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200851944U CN201405919Y (en) | 2009-04-22 | 2009-04-22 | Power-assisted steering system for electronic pneumatic automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200851944U CN201405919Y (en) | 2009-04-22 | 2009-04-22 | Power-assisted steering system for electronic pneumatic automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201405919Y true CN201405919Y (en) | 2010-02-17 |
Family
ID=41676845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200851944U Expired - Fee Related CN201405919Y (en) | 2009-04-22 | 2009-04-22 | Power-assisted steering system for electronic pneumatic automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201405919Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11072365B1 (en) | 2020-10-29 | 2021-07-27 | Foley Company, Llc | Pneumatic power steering system |
-
2009
- 2009-04-22 CN CN2009200851944U patent/CN201405919Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11072365B1 (en) | 2020-10-29 | 2021-07-27 | Foley Company, Llc | Pneumatic power steering system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105667580B (en) | A kind of wire-controlled steering system and its control method based on fuzzy control | |
| CN102229347B (en) | Electric power-assisted steering system of electric vehicle and power-assisted steering method thereof | |
| CN203528598U (en) | Multi-axis grouping steering device and multi-axis vehicle | |
| CN1702007A (en) | Separated steering device for vehicular four wheels and its control method | |
| CN112141207A (en) | Electro-hydraulic power-assisted steering system and crane | |
| CN210162151U (en) | Drive-by-wire steering system and fire engine | |
| CN202107017U (en) | Electric power steering system of electric automobile | |
| CN2633702Y (en) | Electric booster turning mechanism for vehicle | |
| CN201472461U (en) | Axle steering and locking converting control system | |
| CN108891480A (en) | A kind of electro-hydraulic power-assisted coupling steering system of fuel oil car | |
| CN201405919Y (en) | Power-assisted steering system for electronic pneumatic automobile | |
| CN103359164B (en) | For the steering wheel arrangement of steering-by-wire vehicle | |
| CN204688202U (en) | Novel auxiliary machine | |
| CN205149964U (en) | Electronic power assisted steering device of EPS of positive function is initiatively returned in area | |
| CN106740791B (en) | electric servo brake device of electric automobile | |
| CN111943091B (en) | Control method for hydraulic steering of forklift and hydraulic steering system | |
| CN206589955U (en) | A kind of solenoid-operated hydraulic booster type steering | |
| CN102862601A (en) | Electric hydraulic power-assisted steering brake system of automobile | |
| CN210101744U (en) | Active steering system combining EPS and EHPS of commercial vehicle | |
| CN102442345A (en) | Control method of electro-hydraulic type power-assisted steering system | |
| CN211869507U (en) | Steering hydraulic device suitable for steer-by-wire system | |
| CN102431588B (en) | Pneumatic and hydraulic boosted steering system | |
| CN204279606U (en) | Pure electric coach Electro-Hydraulic Power Steering System | |
| CN202130485U (en) | Electric hydraulic power-assisted steering brake system of automobile | |
| CN202966419U (en) | Electronic hydraulic power steering control system of road roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20100422 |