CN201890263U - Electronically-controlled hydraulic power steering system for vehicle - Google Patents
Electronically-controlled hydraulic power steering system for vehicle Download PDFInfo
- Publication number
- CN201890263U CN201890263U CN2010206466375U CN201020646637U CN201890263U CN 201890263 U CN201890263 U CN 201890263U CN 2010206466375 U CN2010206466375 U CN 2010206466375U CN 201020646637 U CN201020646637 U CN 201020646637U CN 201890263 U CN201890263 U CN 201890263U
- Authority
- CN
- China
- Prior art keywords
- valve
- controller
- oil
- steering
- controlled hydraulic
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to an electronically-controlled hydraulic power steering system for a vehicle, which comprises a steering oil pump, a steering control valve, a steering power cylinder, a controller, an oil tank, a vehicle speed sensor, a steering angular velocity sensor, an oil outlet pipe and an oil return pipe, wherein an oil outlet of the steering oil pump is connected with the oil outlet pipe and is also connected with the oil tank after being connected with the oil return pipe through the steering control valve. The electronically-controlled hydraulic power steering system further comprises a bypass line provided with a valve and is characterized in that two or more than two solenoid valves are connected in the bypass line in parallel; the input end of a control signal of each solenoid valve is connected with the output end of each signal of the controller; and the on/off of each solenoid valve is controlled by the controller. The electronically-controlled hydraulic power steering system adopts a solenoid valve combination unit combined by connecting the two or more than two solenoid valves in parallel as a bypass branch, can realize the variable flow control under various modes and can ensure excellent dynamical characteristics during the whole driving process.
Description
(1) technical field:
The utility model relates to a kind of automobile-used electric-controlled hydraulic servo steering system, especially a kind ofly can change the automobile-used electric-controlled hydraulic servo steering system that enters flow stream pressure and flow in the power steering rotary valve.
(2) background technology:
At present, widespread use is hydraulic power-assist steering system on automobile, generally include Hydraulic Pump, storage tanker, steering control valve etc., adopt driving engine as propulsion source, utilize Hydraulic Pump to set up certain pressure, come the flow of modulated pressure oil again through steering control valve, according to the motoring condition of vehicle, the control steering swivel system.In the Vehicular turn process, handling maneuver is still finished by chaufeur, and the oil pressure of power steering system only helps out to turning to, and promptly utilizes the pressure of oil to help chaufeur to finish handling maneuver, makes it light, laborsaving.In the prior art, when the automobile low speed driving, bearing circle is handled portability preferably, and when the speed of a motor vehicle faster the time, the power steerig pump rotating speed also rises, cause the flow of hydraulic oil to increase, produce bigger power-assisted, it is too light to make that bearing circle rotates, and loses road feel easily, produce the problem of automobile " unstable ", reduced the safety performance of automobile.
Because the conventional hydraulic servo steering system can't effectively solve the contradiction that turns to " gently " and " spirit ", and the problem of steering effort and road feel mutual restriction, for this reason, people propose the electric-controlled hydraulic servo steering system and control the flow that enters convertible valve, to obtain good power-assisted feel.
The representative type solution has: Chinese patent 200320118460.1, name is called the restriction size that adopts stepping motor to regulate bypass disc in " automobile electrically-controlled hydraulic power-assist steering system ", enter into the hydraulic fluid flow rate of steering control valve with control, the problem of forfeiture road feel when this improvement project can solve automobile high-speed to a certain extent and turns to, but this form structure complexity, cost is higher, and is wayward; Chinese patent 200820227155.9, name is called and has adopted electromagnetic proportional valve to regulate the restriction size of bypass disc in " a kind of electrohydraulic power steering pump ", thereby the flow of modulated pressure oil, but this scheme is higher to the accuracy requirement of electromagnetic proportional valve itself, requirement to controller is also comparatively harsh, and needle-valve often bears incessantly high pressure in actual use and unsettled phenomenon occurs opening, adopt DC machine direct drive oil pump in the Chinese patent 200720034596.2, this structure has increased motor and other bindiny mechanisms on the basis of original power steering, structure is more complicated, and control of DC also is difficult for.
Above-mentioned each solution since analyze, still can not be satisfactory, need be improved.
(3) summary of the invention:
The utility model aims to provide a kind of simple in structure and can obtain the automobile-used electric-controlled hydraulic steering swivel system of good assist characteristic.
Technical solution of the present utility model is as follows:
A kind of automobile-used electric-controlled hydraulic steering swivel system, comprise power steerig pump, steering control valve, power cylinder, controller, oil tank, car speed sensor, the deflection angle speed sensor, oil outlet pipe, oil return pipe, the oil outlet of described power steerig pump is connected with oil outlet pipe and inserts oil tank after steering control valve connects oil return pipe, it also comprises a by pass line that valve member is installed, the signal output part of described car speed sensor, the signal output part of deflection angle speed sensor is connected with the corresponding signal input end of controller, the signal output part of described controller is connected with the signal input end of valve in the by pass line respectively, in order to cut-offfing of valve in the control by pass line, it is characterized in that: be parallel with two or more electromagnetic valves in the described by pass line, the signal input end of each electromagnetic valve is connected with each signal output part of controller respectively, and cut-offfing by described controller of each electromagnetic valve controlled respectively.
Further technical scheme is:
The latus rectum of each electromagnetic valve in parallel equates in the described by pass line.
Further technical scheme is again:
The latus rectum of each electromagnetic valve in parallel does not wait in the described by pass line.
Electromagnetic valve group with two different latus rectums is combined into example, and its principle of work is: when automobile speed was low, with the electromagnetic valve Close All, this branch road did not play bypass flow to controller according to vehicle speed signal, to obtain bigger power-assisted; When automobile speed was medium, separately that latus rectum in two electromagnetic valves is a less electromagnetic valve valve port of controller was opened, in order to the less hydraulic fluid flow rate of bypass, to reduce certain power-assisted; When the automobile high speed was travelled, the electromagnetic valve valve port that controller is bigger with latus rectum in two electromagnetic valves was separately opened, in order to the more hydraulic fluid flow rate of bypass, to obtain the power-assisted of appropriateness; During galloping, controller is all opened two electromagnetic valve valve ports, in order to the hydraulic fluid flow rate of bypass maximum, and the power-assisted minimum that this moment, chaufeur obtained.Controller is divided into four reasonable intervals with the speed of a motor vehicle, and each interval corresponding above-mentioned a kind of master mode can obtain good assist characteristic by this combination control pattern, so not only simplifies the structure but also easily realizes accuracy control.
If three electromagnetic valves in parallel in the by pass line are housed, can realize more array mode, be connected the bypass effect that can realize maximum seven kinds of different flows with power steering, can make whole driving process all have good assist characteristic.
The utility model is compared with prior art: be formed in parallel electromagnetic valve combination unit as the bypass branch road owing to adopt by two or more electromagnetic valves, can realize the unsteady flow amount control under the various modes, can make whole driving process all have good assist characteristic, improve the road-holding property of automobile; And cost is lower, controls easyly, and compactness rational in infrastructure goes for multiple vehicle.
The latus rectum of each electromagnetic valve in parallel does not wait and makes flow control mode more various in the by pass line.
(4) description of drawings:
Below with reference to drawings and Examples the utility model is described in further details:
Fig. 1 is for adopting the structural representation of two knockdown first embodiment of the utility model of electromagnetic valve.
Each sequence number is respectively in the accompanying drawing: 1, power steerig pump; 2, oil outlet pipe; 3, bypass solenoid valve assembled unit; 3-1, bypass solenoid valve 1; 3-2, bypass solenoid valve 2; 4, deflection angle speed sensor; 5, steering control valve; 6, power cylinder; 7, car speed sensor; 8, controller; 9, oil return pipe; 10, oil tank.
(5) specific embodiment:
Below in conjunction with accompanying drawing 1, be combined into example with the electromagnetic valve group of two different latus rectums, the utility model is described in further detail.
In the automobile-used electric-controlled hydraulic steering swivel system shown in first embodiment of the utility model, comprise power steerig pump 1, oil outlet pipe 2, steering control valve 5, power cylinder 6, deflection angle speed sensor 4, oil return pipe 9, oil tank 10, car speed sensor 7, controller 8, the oil outlet of described power steerig pump 1 is connected with oil outlet pipe 2 and inserts oil tank 10 after steering control valve 5 connects oil return pipe 9, it comprises that also is parallel with two bypass solenoid valve 3-1, the by pass line of 3-2, the signal output part of described car speed sensor, the signal output part of deflection angle speed sensor is connected with the corresponding signal input end of controller, the signal output part of controller respectively with bypass solenoid valve 3-1, the signal input end of 3-2 is connected, in order to control valve 3-1 in the by pass line respectively, 3-2 cut-offs.
Adopted two box-like electromagnetic valve combination unit that are formed in parallel of electromagnetic valve group as the bypass branch road, on original hydraulic power-assist steering system basis, respectively a hydraulic three-way valve is installed respectively in fuel-displaced pipeline 2, oil return line 9, after being connected in parallel, the electromagnetic valve of two different latus rectums of electromagnetic valve combination unit 3 in-to-ins forms an oil inlet and oil outlet, with this oil inlet and the oil outlet formation bypass circulation that is connected with above-mentioned two triple valves respectively, controller 8 is gathered the switching of electromagnetic valves in the vehicle speed signal control electromagnetic valve assembled units 3.The utility model in use, when chaufeur just starts automobile, need relatively large power steering, this moment, electromagnetic valve combination unit two closed electromagnetic valves did not play bypass action, increase along with the speed of a motor vehicle, controller as required, open the less electromagnetic valve of one of them latus rectum, in the time of the automobile high speed, open the bigger electromagnetic valve of latus rectum, by the time in the time of high-revolving, with whole valve opens, reduce to enter the hydraulic fluid flow rate that turns in the steering control valve with this, thereby increase steering effort, increase road feel, improve the safety performance of whole steering swivel system.
Among second embodiment of the utility model, uniquely with first embodiment different be, the electromagnetic valve combination unit that three electromagnetic valves that latus rectum do not wait are formed in parallel is installed in the bypass branch road, each electromagnetic valve is connected with three signal output parts of controller respectively in the electromagnetic valve combination unit, the control signal of controlled device control respectively, thereby realize each electromagnetic valve cut-off respectively and combination is cut-off, thereby realize the different hydraulic fluid flow rates in the whole bypass branch road.Multipotency such as three electromagnetic valves that latus rectum does not wait is realized the bypass effect of seven kinds of different flows, can make whole driving process all have good assist characteristic.More than these, to those skilled in the art, should be able to be expressly understood after the reading, and need not pay creative work and can reveal again, just do not described in detail at this.
Certainly, the electromagnetic valve combination unit that more electromagnetic valve is formed in parallel is installed in the bypass branch road, the bypass flow of its realization has more kinds of, and especially when each electromagnetic valve adopted the latus rectum that does not wait, this can make whole driving process all have good assist characteristic.
The utility model can realize that the bypass oil mass is multistage adjustable, the electric-controlled hydraulic servo steering system that assist characteristic is better keeping on original hydraulic power-assist steering system basis, setting up a cover electromagnetic valve combination unit as bleed off circuit.Realized goal of the invention easily.
Claims (3)
1. automobile-used electric-controlled hydraulic steering swivel system, comprise power steerig pump, steering control valve, power cylinder, controller, oil tank, car speed sensor, the deflection angle speed sensor, oil outlet pipe, oil return pipe, the oil outlet of described power steerig pump is connected with oil outlet pipe and inserts oil tank after steering control valve connects oil return pipe, it also comprises a by pass line that valve member is installed, the signal output part of described car speed sensor, the signal output part of deflection angle speed sensor is connected with the corresponding signal input end of controller, the signal output part of described controller is connected with the signal input end of valve in the by pass line respectively, in order to cut-offfing of valve in the control by pass line, it is characterized in that: be parallel with two or more electromagnetic valves in the described by pass line, the signal input end of each electromagnetic valve is connected with each signal output part of controller respectively, and cut-offfing by described controller of each electromagnetic valve controlled respectively.
2. automobile-used electric-controlled hydraulic steering swivel system according to claim 1 is characterized in that: the latus rectum of each electromagnetic valve in parallel equates in the described by pass line.
3. automobile-used electric-controlled hydraulic steering swivel system according to claim 1 is characterized in that: the latus rectum of each electromagnetic valve in parallel does not wait in the described by pass line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206466375U CN201890263U (en) | 2010-12-08 | 2010-12-08 | Electronically-controlled hydraulic power steering system for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206466375U CN201890263U (en) | 2010-12-08 | 2010-12-08 | Electronically-controlled hydraulic power steering system for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201890263U true CN201890263U (en) | 2011-07-06 |
Family
ID=44219738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206466375U Expired - Lifetime CN201890263U (en) | 2010-12-08 | 2010-12-08 | Electronically-controlled hydraulic power steering system for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201890263U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490783A (en) * | 2011-11-18 | 2012-06-13 | 江苏大学 | Electrically-controlled hydraulic steering control device |
| CN102556148A (en) * | 2010-12-08 | 2012-07-11 | 江苏罡阳动力转向器厂 | Vehicular electrically-controlled hydraulic power steering system |
| CN105539574A (en) * | 2015-12-07 | 2016-05-04 | 中国北方车辆研究所 | Automobile rear wheel steering electro-hydraulic system and control method thereof |
-
2010
- 2010-12-08 CN CN2010206466375U patent/CN201890263U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556148A (en) * | 2010-12-08 | 2012-07-11 | 江苏罡阳动力转向器厂 | Vehicular electrically-controlled hydraulic power steering system |
| CN102490783A (en) * | 2011-11-18 | 2012-06-13 | 江苏大学 | Electrically-controlled hydraulic steering control device |
| CN102490783B (en) * | 2011-11-18 | 2013-09-25 | 江苏大学 | Electrically-controlled hydraulic steering control device |
| CN105539574A (en) * | 2015-12-07 | 2016-05-04 | 中国北方车辆研究所 | Automobile rear wheel steering electro-hydraulic system and control method thereof |
| CN105539574B (en) * | 2015-12-07 | 2017-09-26 | 中国北方车辆研究所 | Automobile back wheel turns to electronically controlled hydraulic system and its control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102556148A (en) | Vehicular electrically-controlled hydraulic power steering system | |
| CN101865190B (en) | Position and flow double-close-loop direct-drive volume control electro-hydraulic servo system | |
| CN203528598U (en) | Multi-shaft grouping steering device and multi-shaft vehicle | |
| CN102501917B (en) | Electrically-controlled hydraulically-driven steering device for mobile platform of agricultural robot | |
| CN205087004U (en) | Intelligent vehicle autopilot control system | |
| CN106080763A (en) | A kind of fluid motor-driven steering based on all-hydraulic steering gear | |
| CN201890263U (en) | Electronically-controlled hydraulic power steering system for vehicle | |
| CN102351004B (en) | Automobile power-assisted steering system | |
| CN202193115U (en) | Dual-pump hydraulic assistant steering device for hybrid vehicle | |
| CN103273843A (en) | Hydraulic part time four-wheel-drive drive system of self-propelled harvester | |
| CN208360297U (en) | Wheel steering system, vehicle | |
| CN212332948U (en) | Intelligent follow-up hydraulic steering engine pump station of steering gear | |
| CN203937514U (en) | A kind of many wheel engineering truck fluid pressure drive devices | |
| CN108382457A (en) | A kind of tractor self-steering remodeling method and control method | |
| CN207328580U (en) | A kind of automobile hydraulic variable ratio steering | |
| CN209667193U (en) | A kind of electric-controlled hydraulic steering valve group based on satellite navigation | |
| CN200981578Y (en) | Wide tyre road roller double-steering-wheel steering gear | |
| CN106741152B (en) | Sweeping machine steering system, sweeping machine and sweeping machine rotating direction control method and device | |
| CN207712135U (en) | A kind of steering of wide dumper | |
| CN208360298U (en) | A kind of vehicle, steering system and switching valve | |
| CN202449055U (en) | Full-hydraulic steering control system and rough-terrain crane | |
| CN207750316U (en) | Control valve group for the output of quantitative system flow proportional | |
| CN209368939U (en) | Handle steering hydraulic system | |
| CN203441607U (en) | Double-main-channel mechanical throttle body | |
| CN107176204B (en) | Hydraulic hub motor aids in differential servo steering system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110706 |