CN206719313U - A kind of electronic and automatically controlled two-in-one hydraulic power-assist steering system - Google Patents
A kind of electronic and automatically controlled two-in-one hydraulic power-assist steering system Download PDFInfo
- Publication number
- CN206719313U CN206719313U CN201720257432.XU CN201720257432U CN206719313U CN 206719313 U CN206719313 U CN 206719313U CN 201720257432 U CN201720257432 U CN 201720257432U CN 206719313 U CN206719313 U CN 206719313U
- Authority
- CN
- China
- Prior art keywords
- steering
- hydraulic power
- steering system
- automatically controlled
- electronic
- 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.)
- Active
Links
Landscapes
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The utility model provides a kind of electronic and automatically controlled two-in-one hydraulic power-assist steering system, including turning control cell, hydraulic booster pipeline and the steering pump being arranged on hydraulic booster pipeline, magnetic valve is additionally provided with the hydraulic booster pipeline, steering motor drives the steering pump, and the turning control cell is connected with the magnetic valve, steering motor.Under normal circumstances, system is operated under automatically controlled pattern, if automatically controlled mode failures even, switchs to electric model.The utility model is effectively solved in the case that existing Electro-Hydraulic Power Steering System switchs to Normal hydraulic servo steering system when electric control gear fails, add degree of fatigue during fast steering, the problem of comfort level reduces is turned to, while also solves the problems, such as that electric hydraulic power-assisted steering system can not be often operated in the range of speeds corresponding to efficiency high.
Description
Technical field
The utility model belongs to Automotive Steering Technology field, and in particular to a kind of electronic and automatically controlled two-in-one hydraulic booster turns
To system.
Background technology
Hydraulic power-assist steering system provides power resources using engine driving steering pump, the machinery that engine is rotated
The hydraulic energy for turning to fluid can be converted into, power steering is provided by power steering stgear, driver is reduced and is applied to steering
Steering force on disk.
Electro-Hydraulic Power Steering System is different according to control mode, can be divided into counter-force control formula, flow control formula and valve
Gain control standard three types.
For counter-force control formula Electro-Hydraulic Power Steering System, on the basis of existing hydraulic power-assist steering system, lead to
Cross and set up power steering electronic-controlled installation and vehicle speed sensor composition Electro-Hydraulic Power Steering System.As shown in figure 1, counter-force
Control formula Electro-Hydraulic Power Steering System mainly (includes steering by steering wheel 1, steering column 2, in-line power steering 3
Control valve 4, manual steering gear 5, actuator cylinder 6, oil pressure counter force chamber 7, counter-force plunger 8), steering reservoir 9, steering pump 10, turn
To oil pipe 11, flow divider 12 and fixed restriction aperture 13, magnetic valve 14, turning control cell ECU 15, vehicle speed sensor 16 etc.
Composition, main structure is to have installed two pairs of counter-force plungers additional in the front end of course changing control rotary valve spool.
On the basis of hydraulic power-assist steering system, after installing counter-force plunger additional in course changing control valve core front end, two groups pairs
Claim the counter-force plunger outer end of arrangement by the action of hydraulic force by electromagnetism valve regulation, and the inner is beared down on one in " one " word of valve element front end
On shape wing plate, its pressure can form torque to valve element.When rotating steering wheel, the torsional moment and counter-force plunger of torque spring need to be overcome
After the resultant moment of torque, valve element can be made to produce relative angular displacement with valve body, realize steering hydraulic power-assisted.
Relative to mechanical steering system, electric hydraulic power-assisted steering system advantage is too numerous to enumerate：Tired driver can be reduced,
Particularly steer without driving when；Reduce the influence that road surface is recoiled to steering wheel, improve steering sensitivity；Meanwhile improve peace
Quan Xing.But after electric control gear failure, Electro-Hydraulic Power Steering System is changed into Normal hydraulic servo steering system.Electricity
Without control signal on magnet valve, it will keep maximum steering " road feel ", direction is more heavy when turning to original place or low speed；Same
Under one speed, with the increase of turning velocity, because ECU controls are constant by the average current of electromagnetic valve coil, magnetic valve
Average aperture is also constant, and steering force will not lower with the increase of turning velocity, add degree of fatigue during fast steering, turns
Reduced to comfort level, fast steering power-assisted deficiency can be produced, respond the shortcomings of slower, make its use by a definite limitation.
In addition, electric hydraulic power-assisted steering system is on the basis of hydraulic power-assist steering system, will be driven by the engine
Steering pump is changed to drive steering pump by steering motor, uses power battery pack or battery independently of engine as steering
Motor is powered, while according to the running status of vehicle, (whether engine is opened, turning velocity size, speed are big using controller
It is small) rotating speed of control steering motor, improves energy-saving effect, while realizes the spy that steering force changes with speed and turning velocity
Property.Electric hydraulic power-assisted steering technology had both had that conventional hydraulic power-assisted steering technology maturation, power-assisted be big, reliable and good hand touch
The features such as, there is the efficiency high, easy to control of motor again；Reaction it is sensitiveer, power steering size also can according to turn
The parameters such as angle, speed are voluntarily adjusted, more hommization, can more realize that " low speed turns to light, high speed than hydraulic power-assist steering system
Enhancing road feel (i.e. power-assisted reduces) avoids unstable ", while save, efficiently.But due to steering motor the range of speeds change compared with
Greatly, efficiency change is big, it is impossible to is often operated in the range of speeds corresponding to efficiency high.
Utility model content
The purpose of this utility model is to provide a kind of electronic and automatically controlled two-in-one hydraulic power-assist steering system, existing to solve
Degree of fatigue when thering is the Electro-Hydraulic Power Steering System to add fast steering when electric control gear fails, turn to comfort level drop
The problem of low.
In order to solve the above technical problems, the technical solution of the utility model is：
The electronic and automatically controlled two-in-one hydraulic power-assist steering system of one kind of the present utility model, including turning control cell, liquid
Power-assisted pipeline and the steering pump being arranged on hydraulic booster pipeline are pressed, magnetic valve is additionally provided with the hydraulic booster pipeline,
Steering motor drives the steering pump, and the turning control cell is connected with the magnetic valve, steering motor.
Further, the steering also includes being used for the detection means for detecting the solenoid valve failure.
Further, the detection means is the flow sensor being installed in the hydraulic booster pipeline.
Further, the detection means is magnetic valve action detection device, including moves road installed in magnet plunger
It is used for the travel switch triggered by magnet plunger on footpath.
Further, the magnetic valve is the electromagnetism open in usual that magnet plunger is held in normally open position by spring
Valve, the travel switch include switch contact, and switch contact contacts with the magnet plunger of normally open position.
Further, switch contact has the loop where conducting travel switch when magnet plunger is in normally open position
Closing position and the sub-gate position for loop where disconnecting travel switch when magnet plunger acts.
Further, supporting sleeve is provided with spring, loop where travel switch includes being arranged at the supporting sleeve
On wire, supporting sleeve upper end is provided with turn edge, and switch contact is arranged at the downside of turn edge, and wire has positioned at described
In turn edge for the contact that is contacted with the switch contact, magnet plunger has through turn edge and realizing to be opened with described
Close the connected projection of contact.
Further, the magnetic valve includes valve body, and the plunger includes being oriented to the piston body coordinated with valve body, described
Piston body is connected by transition shoulder with projection, and spring is used to jack up transition shoulder.
Further, in addition to the steering angular velocity sensor that is installed on the steering column of hydraulic power-assist steering system,
The turning control cell sampling connects the steering angular velocity sensor.
The beneficial effects of the utility model：
Of the present utility model electronic and automatically controlled two-in-one hydraulic power-assist steering system, including automatically controlled pattern and electric model two
Kind mode of operation.Under normal circumstances, system is operated under automatically controlled pattern, realizes automobile light steering in low speed, at a high speed
When form stronger steering " road feel ".In the case of automatically controlled mode failures even, switch to electric model, driven and turned to by steering motor
Oil pump, according to the rotating speed of running status (turning velocity size, speed size) controlled motor of vehicle, energy-saving effect is improved, it is real
Power is turned now to speed and turning velocity to change.The utility model solves existing Electro-Hydraulic Power Steering System in automatically controlled dress
Put degree of fatigue when fast steering is added during failure, turn to the problem of comfort level reduces.
Brief description of the drawings
Fig. 1 is the composition structure chart of counter-force control formula Electro-Hydraulic Power Steering System；
Fig. 2 is the composition structure chart of the electronic and automatically controlled two-in-one hydraulic power-assist steering system of counter-force control formula；
Fig. 3 is the magnetic valve schematic diagram for not increasing travel switch；
Fig. 4 is schematic diagram when the magnetic valve of increase travel switch is in normally open；
Fig. 5 is schematic diagram when the hollow plunger for the magnetic valve for increasing travel switch moves downward；
Fig. 6 is that counter-force control formula is electronic and the electric current I and steering angular velocity υ, car of Electro-Hydraulic Power Steering System demarcation
Fast V relation；
Fig. 7 is that counter-force control formula is electronic and the steering motor frequency f and steering angle of Electro-Hydraulic Power Steering System demarcation
Speed υ, vehicle velocity V relation；
Fig. 8 is the electric current I and steering angular velocity υ, car that flow controls formula electronic and Electro-Hydraulic Power Steering System is demarcated
Fast V relation.
Embodiment
To make the purpose of this utility model, technical scheme and advantage definitely, below in conjunction with the accompanying drawings, to the utility model
Embodiment be described in further detail.
On the whole, the utility model is equipped with steering angular velocity on conventional hydraulic servo steering system in steering column
Sensor, turning control cell ECU is according to the intensity of the high high adjustment power steering of speed, according to the size for applying steering force,
Obtain driver and naturally turn to " road feel " and good steering comfort level；Meanwhile by steering pump driven by the engine more
The steering pump of steering motor driving is changed to, extension turning control cell ECU control function, forms electric and automatically controlled liquid
Press servo steering system.
The electronic and automatically controlled two-in-one hydraulic power-assist steering system, during normal work, steering motor is operated in efficiency high
Steering range, realize the function of electric-controlled hydraulic power-assisted steering；The magnetic valve switched using tape travel, turning control cell ECU can
To judge whether magnetic valve fails；When electromagnetism defective valve can not realize electric-controlled hydraulic power-assisted steering function, turning control cell
ECU controls steering motor variable frequency work according to speed, the size of steering angular velocity, realizes electric hydraulic power-assisted steering function.This
The sample electronic and automatically controlled two-in-one hydraulic power-assist steering system can realize that " low speed turns to light, height under different working condition
Speed enhancing road feel (i.e. power-assisted reduces) avoids unstable ", while save, efficiently.
As shown in Figure 1, 2, by taking counter-force control formula as an example, on the basis of counter-force control formula Electro-Hydraulic Power Steering System
On, steering angular velocity sensor 17 is set on steering column 2.During steering, steering angular velocity sensor 17 turns steering angular velocity
Electric signal corresponding to turning to simultaneously is sent to turning control cell ECU 15.Increase travel switch, course changing control list on magnetic valve 14
First ECU 15 judges whether magnetic valve fails by detecting the voltage change of travel switch circuit.Meanwhile steering pump 10 by
Steering motor drives.
Originally, automotive service is in Electro-Hydraulic Power Steering System mode of operation (referred to as automatically controlled mode of operation), flow divider
12 respectively distribute one stable hydraulic fluid flow rate to magnetic valve 14 and counter-force plunger 8, and magnetic valve 14 is then in turning control cell ECU
The hydraulic oil capacity of returns of counter-force plunger side is adjusted under the control of 15 current signal sizes, so as to control counter-force plunger reaction force
Size.
When automobile stagnation of movement or relatively low travel speed, turning control cell ECU 15 makes the average electricity by electromagnetic valve coil
Stream increase, the average aperture increase of magnetic valve 14 shunt the capacity of returns increase of hydraulic oil, and the back pressure for acting on counter-force plunger 8 subtracts
It is small, only need less steering moment that torque spring torsion and the resultant moment of counter-force plunger can be overcome to make course changing control during steering
The torque spring of valve 4 produces torsional deflection and realizes power steering, that is, realizes light steering during low speed.
When automobile driving speed is higher, turning control cell ECU 15 makes to subtract by the average current of electromagnetic valve coil
Small, the average aperture of magnetic valve 14 reduces, and the capacity of returns for shunting hydraulic oil reduces, and acts on the back pressure increase of counter-force plunger, turns
To when need larger steering moment just to overcome the resultant moment of torque spring torsion and counter-force plunger (equivalent to adding torsion
The rigidity of spring), make steering control valve 4 torque spring produce torsional deflection and realize power steering, i.e., high speed when formed compared with
Strong steering " road feel ".
Turning control cell ECU functions：
1) after turning control cell ECU 15 receives GES, steering angular velocity signal, control electromagnetic valve coil passes through
The average current size average opening degree of plunger (corresponding) it is opposite with speed, steering angular velocity growth trend.
When automobile stagnation of movement or relatively low travel speed, turning control cell ECU 15 makes the average electricity by electromagnetic valve coil
Stream increase, the average aperture increase of plunger of magnetic valve 14, shunts the capacity of returns increase of hydraulic oil, acts on the back of the body of counter-force plunger 8
Pressure reduces, and realizes light steering during low speed；When automobile driving speed is higher, turning control cell ECU 15 makes to pass through magnetic valve
The average current of coil reduces, and the average aperture of plunger of magnetic valve 14 reduces, and the capacity of returns for shunting hydraulic oil reduces, and acts on anti-
The back pressure increase of power plunger 8, realizes steering " road feel " (increasing steering force) stronger at a high speed.
Under same speed, with the increase of steering angular velocity, the average current that electromagnetic valve coil passes through increases, magnetic valve 14
The average opening degree increase of plunger, the capacity of returns increase of hydraulic oil is shunted by magnetic valve 14, acts on rotary valve counter-force plunger 8
Back pressure reduce, it is only necessary to less steering moment can overcome the resultant moment of torque spring torsion and counter-force plunger, make steering
The torque spring of control valve 4 produces torsional deflection, realizes power steering and steering force reduces.
Need the electric current I that demarcates and the relation of steering angular velocity υ, vehicle velocity V as shown in Figure 6.Magnet coil passes through demarcation
Current value I, steering force F should meet desired value as defined in Car design and scope.
2) when vehicle starts running or turns to, the plunger of magnetic valve 14 should be opened, the row on corresponding magnetic valve 14
Cheng Kaiguan is changed into " breaking " from " logical ", and input turning control cell ECU 15 voltage signal should be changed into " low " from " height ".If turn
Detect that voltage signal does not change to control unit ECU 15, illustrate that the plunger of magnetic valve 14 is not opened, counter-force control formula
Disabler.Now the control functions of turning control cell ECU 15 switch to electric hydaulic assistant mode, steering motor frequency f with
Steering angular velocity υ, the relation of vehicle velocity V are：When automobile stagnation of movement or low travel speed, ECU controls steering motor is in high frequency fortune
Turn；When automobile driving speed is high, ECU controls steering motor is in low frequency operating, realizes that low speed steering is light, there have at a high speed to be stronger
Steering " road feel ".
Need the steering motor frequency f that demarcates and the relation of steering angular velocity υ, vehicle velocity V as shown in Figure 7.Course changing control list
First ECU controls steering motor operates according to spot frequency, and steering force F should meet desired value as defined in Car design and scope.
Travel switch is provided with magnetic valve 14, turning control cell ECU 15 judges whether magnetic valve fails, that is, turns to
Control unit ECU 15 detects the voltage change of travel switch circuit.When turning control cell ECU 15 controls the post of magnetic valve 14
Plug aperture changes, but remains to detect " height " voltage signal, illustrates electromagnetism defective valve, the system can not be operated in automatically controlled work
Operation mode, now need to switch to electric hydraulic power-assisted steering system mode of operation (abbreviation electric mode).
Under electric mode, steering pump 10 is driven by steering motor, using the electrokinetic cell independently of engine
Group or battery are powered for steering motor, while (turning velocity is big according to the running status of vehicle by turning control cell ECU 15
Small, speed size) control steering motor rotating speed, improve energy-saving effect, at the same realize steering force with speed and turning velocity and
The characteristic of change.When speed is relatively low, steering motor operates in a high frequency, and power-assisted effect is strong, turns to light；With the raising of speed,
Steering motor frequency linearity reduces, and power-assisted effect reduces, and makes the steering " road feel " of high speed strengthen.When speed is constant, steering angle
Speed is smaller, and steering motor frequency reduces, and power steering effect is corresponding to be reduced；Steering angular velocity is bigger, and steering motor frequency increases
Add, the corresponding increase of power steering effect.
Fig. 3 is the magnetic valve for not increasing travel switch, and magnetic valve includes valve body 18, the hollow plunger being arranged in valve body 18
19, and the magnet coil 20 being arranged on outside valve body 18, hollow plunger 19 include being oriented to valve body 18 piston body 21 that coordinates and
Projection 22 (band contact).Piston body 21 is connected by transition shoulder 23 with projection 22, and spring 24 is used to jack up transition shoulder 23.The electricity
Hollow plunger 19 is held in normally open by magnet valve by spring 24, is normally open type magnetic valve.Be provided with hollow plunger 19 with
The small valve port 25 and big valve port 26 that valve body 18 coordinates.Pumped by hollow plunger 19 so that the aperture hair of magnetic valve
Changing, i.e., changed from flow of the small valve port through excessive valve port, so as to control hydraulic power-assisted steering.
Fig. 4 is the magnetic valve of increase travel switch, increases travel switch on the basis of Fig. 3.Travel switch includes switch
Contact 27, under normal circumstances, switch contact 27 and the contact of the projection 22 of the hollow plunger 19 of the magnetic valve of normally open position.
Switch contact has closing position, for being returned when the hollow plunger 19 of magnetic valve is in normally open position where conducting travel switch
Road；Also there is sub-gate position, for loop where disconnecting travel switch when the hollow plunger 19 of magnetic valve acts.In spring 24
Supporting sleeve 28 is provided with, loop where travel switch includes the wire 29 being arranged in supporting sleeve 28, and supporting sleeve 28 is used
In support wire 29.The upper end of supporting sleeve 28 is provided with turn edge, and the switch contact 27 of travel switch is arranged under turn edge
Side, wire 29 have in the turn edge for the contact that is contacted with switch contact 27, the projection of the hollow plunger of magnetic valve
22 realized through turn edge and by contact contact with switch contact 27 it is connected.Loop where travel switch also includes being arranged at electricity
Wire 30 and wire 31 outside magnet valve valve body 18, wire 31 are connected with ECU out-put supply positive poles, and wire 30 is grounded, and the circuit
In be provided with diode 32, the anode of diode 32 is connected to the ground.
In state as shown in Figure 4, loop where travel switch is in the conduction state, now ECU collection voltages signal,
Detectable " height " voltage.When giving magnetic valve action signal, when hollow plunger moves downward, the projection 22 of hollow plunger can drive
Contact (being contacted with the switch contact 27 of travel switch) downwards, so that loop disconnects where travel switch, is now adopted by ECU
During collecting voltage signal, voltage signal is " low ", as shown in Figure 5.If giving magnetic valve action signal, pass through ECU collection voltages signals
When, it is still able to collect " height " voltage signal, then illustrates electromagnetism defective valve.
In the present embodiment, as a preferred embodiment, the electricity that turning control cell ECU switchs according to tape travel
Magnet valve, to judge whether magnetic valve fails.If judging electromagnetism defective valve, i.e. automobile can not be operated in automatically controlled pattern and get off to realize liquid
When pressing power-assisted steering function, automobile can switch to electric mode, and steering pump, turning control cell are driven by steering motor
ECU controls steering motor variable frequency work according to speed, the size of steering angular velocity, realizes electric hydraulic power-assisted steering function.Make
For other embodiment, flow sensor can be set to judge whether magnetic valve is effective on fluid pressure line.If for example, turn to control
Unit ECU control electromagnetism valve opening processed reduces, but the flow in oil duct is constant or even increases, and also illustrates electromagnetism defective valve, this
When electric model is also switched to by automatically controlled pattern come realize turn to.
In addition, introduce the different ECU functions of flow control formula and valve gain formula electric-controlled hydraulic power-assisted type.
According to the difference of structural principle, flow control formula and valve gain control standard electric-controlled hydraulic power-assisted type and counter-force control
Formula is different.After receiving GES, steering angular velocity signal, what turning control cell ECU control electromagnetic valve coils passed through is averaged
Size of current (the average opening degree of corresponding plunger) is identical with speed, steering angular velocity growth trend.
When automobile stagnation of movement or low travel speed, turning control cell ECU makes to drop by the average current of electromagnetic valve coil
Low, the average aperture of magnet plunger reduces, and the capacity of returns of bypass hydraulic oil reduces, and power steering increase, realizes light during low speed
Just turn to；When automobile driving speed is high, turning control cell ECU makes to raise by the average current of electromagnetic valve coil, electromagnetism
The average aperture increase of valve, the capacity of returns increase of bypass hydraulic oil, power steering reduce, and realize steering " road feel " stronger at a high speed
(increasing steering force).
Under same speed, with the increase of steering angular velocity, the average current that electromagnetic valve coil passes through reduces, electromagnetism valve rod
The average opening degree of plug reduces, and is reduced by the hydraulic oil capacity of returns of magnetic valve by-pass shunt, and power steering is stepped up, real
Turn now to the reduction of power-assisted.
Need the electric current I that demarcates and the relation of steering angular velocity υ, vehicle velocity V as shown in Figure 8.Magnet coil passes through demarcation
Current value I, steering force F should meet desired value as defined in Car design and scope.
Although content of the present utility model is discussed in detail by above preferred embodiment, but it should be appreciated that on
The description stated is not considered as to limitation of the present utility model.After those skilled in the art have read the above, for
A variety of modifications and substitutions of the present utility model all will be apparent.Therefore, the scope of protection of the utility model should be by appended
Claim limit.
Claims (9)
1. a kind of electronic and automatically controlled two-in-one hydraulic power-assist steering system, including turning control cell, hydraulic booster pipeline and set
Put the steering pump on hydraulic booster pipeline, it is characterised in that be additionally provided with magnetic valve on the hydraulic booster pipeline, turn to
Motor drives the steering pump, and the turning control cell is connected with the magnetic valve, steering motor.
2. according to claim 1 electronic and automatically controlled two-in-one hydraulic power-assist steering system, it is characterised in that the steering
System also includes being used for the detection means for detecting the solenoid valve failure.
3. according to claim 2 electronic and automatically controlled two-in-one hydraulic power-assist steering system, it is characterised in that the detection
Device is the flow sensor being installed in the hydraulic booster pipeline.
4. according to claim 2 electronic and automatically controlled two-in-one hydraulic power-assist steering system, it is characterised in that the detection
Device is magnetic valve action detection device, including is used on magnet plunger motion path by magnet plunger triggering
Travel switch.
5. according to claim 4 electronic and automatically controlled two-in-one hydraulic power-assist steering system, it is characterised in that the electromagnetism
Valve is the normally open type magnetic valve that magnet plunger is held in normally open position by spring, and the travel switch includes switch and touched
Head, switch contact contact with the magnet plunger of normally open position.
6. according to claim 5 electronic and automatically controlled two-in-one hydraulic power-assist steering system, it is characterised in that switch contact
With the closing position in loop where the conducting travel switch when magnet plunger is in normally open position and in magnet plunger
The sub-gate position in loop where disconnecting travel switch during action.
7. according to claim 6 electronic and automatically controlled two-in-one hydraulic power-assist steering system, it is characterised in that set in spring
Supporting sleeve is equipped with, loop where travel switch includes the wire being arranged on the supporting sleeve, and supporting sleeve upper end is set
There is turn edge, switch contact is arranged at the downside of turn edge, and wire has to be used for and the switch in the turn edge
The contact of contact, magnet plunger have through turn edge and realize the projection for contacting and being connected with the switch contact.
8. according to claim 7 electronic and automatically controlled two-in-one hydraulic power-assist steering system, it is characterised in that the electromagnetism
Valve includes valve body, and the plunger includes being oriented to the piston body coordinated with valve body, and the piston body passes through transition shoulder and projection
It is connected, spring is used to jack up transition shoulder.
9. according to claim 1 electronic and automatically controlled two-in-one hydraulic power-assist steering system, it is characterised in that also include peace
Steering angular velocity sensor on steering column loaded on hydraulic power-assist steering system, the turning control cell sampling connection institute
State steering angular velocity sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720257432.XU CN206719313U (en) | 2017-03-16 | 2017-03-16 | A kind of electronic and automatically controlled two-in-one hydraulic power-assist steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720257432.XU CN206719313U (en) | 2017-03-16 | 2017-03-16 | A kind of electronic and automatically controlled two-in-one hydraulic power-assist steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206719313U true CN206719313U (en) | 2017-12-08 |
Family
ID=60502005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720257432.XU Active CN206719313U (en) | 2017-03-16 | 2017-03-16 | A kind of electronic and automatically controlled two-in-one hydraulic power-assist steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206719313U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622181A (en) * | 2017-03-16 | 2018-10-09 | 郑州宇通客车股份有限公司 | Electronic and automatically controlled two-in-one hydraulic power-assist steering system |
| CN110155156A (en) * | 2018-02-11 | 2019-08-23 | 华为技术有限公司 | Steering shaft coupling control system, method and assembly method |
-
2017
- 2017-03-16 CN CN201720257432.XU patent/CN206719313U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108622181A (en) * | 2017-03-16 | 2018-10-09 | 郑州宇通客车股份有限公司 | Electronic and automatically controlled two-in-one hydraulic power-assist steering system |
| CN108622181B (en) * | 2017-03-16 | 2023-10-03 | 宇通客车股份有限公司 | Electric and electric control two-in-one hydraulic power steering system |
| CN110155156A (en) * | 2018-02-11 | 2019-08-23 | 华为技术有限公司 | Steering shaft coupling control system, method and assembly method |
| CN110155156B (en) * | 2018-02-11 | 2020-12-08 | 华为技术有限公司 | Steering shaft coupling control system, method and assembly method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105667580B (en) | A kind of wire-controlled steering system and its control method based on fuzzy control | |
| CN102372022B (en) | Multi-axle vehicle electro-hydraulic servo steering system, steering control method and multi-axle vehicle | |
| CN2803861Y (en) | Electric boosting steering system | |
| CN105416392B (en) | A kind of push-down composite turning system and its mode switch control method | |
| CN206719313U (en) | A kind of electronic and automatically controlled two-in-one hydraulic power-assist steering system | |
| CN102951198B (en) | A kind of vehicle and fluid-link steering drive system | |
| CN104401388A (en) | Intelligent electro-hydraulic steering system | |
| CN102923185A (en) | Electronic control hydraulic power steering system controller and control method thereof | |
| CN108622181A (en) | Electronic and automatically controlled two-in-one hydraulic power-assist steering system | |
| CN206754548U (en) | A kind of magnetic valve | |
| CN104401391A (en) | Rack and pinion type magnetofluid electric control hydraulic power steering device and control method | |
| CN108466570A (en) | A kind of electric vehicle E-Diff | |
| CN204296854U (en) | The electri forklift hydraulic power-assist steering system of energy-saving and noise-reducing | |
| CN212506508U (en) | Friction positioning type electric steering control system of loader | |
| CN108626465A (en) | Solenoid valve | |
| CN104709853B (en) | Protection system is made in the translation of telescopic arm forklift side | |
| CN202089105U (en) | Electro-hydraulic steering system for coach | |
| CN202966414U (en) | Flow variable electronically-controlled hydraulic steering system | |
| CN213974165U (en) | Steering system of electric aircraft tractor | |
| CN2769134Y (en) | Electric motor car steering control device | |
| CN201882140U (en) | Electric power steering system of electromobile | |
| CN208829208U (en) | A kind of static-pressure forklift walking electrical control gear | |
| CN203616035U (en) | Device for measuring ideal steering wheel controlling moment of automobile | |
| CN114348105B (en) | Rear wheel steering system of heavy truck and control method | |
| CN208646615U (en) | E-Diff device for electric vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co.,Ltd. Address before: 450016 Yutong Industrial Zone, eighteen Li River, Henan, Zhengzhou Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd. |