CN102556148A - Vehicular electrically-controlled hydraulic power steering system - Google Patents
Vehicular electrically-controlled hydraulic power steering system Download PDFInfo
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- CN102556148A CN102556148A CN2010105776595A CN201010577659A CN102556148A CN 102556148 A CN102556148 A CN 102556148A CN 2010105776595 A CN2010105776595 A CN 2010105776595A CN 201010577659 A CN201010577659 A CN 201010577659A CN 102556148 A CN102556148 A CN 102556148A
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Abstract
The invention relates to a vehicular electrically-controlled hydraulic power steering system, which comprises a steering oil pump, a steering control valve, a steering power cylinder, controllers, an oil tank, a vehicle speed sensor, a steering angular speed sensor, an oil outlet pipe, an oil return pipe and a bypass with valves. An oil outlet of the steering oil pump is connected with the oil outlet pipe and then connected with the oil return pipe through the steering control valve to be further connected into the oil tank. The vehicular electrically-controlled hydraulic power steering system is characterized in that two or more than two electromagnetic valves are parallelly connected in the bypass, and on and off of the valves are controlled by the controllers respectively. The two or more electromagnetic valves are parallelly connected to form an electromagnetic valve combination unit serving as the bypass, variable-flow control in various modes can be realized, and the whole running process can be provided with excellent power assistance.
Description
Technical field
The present invention 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 gets into flow stream pressure and flow in the power steering rotary valve.
Background technology
At present; Widespread use is hydraulic power-assist steering system on automobile, generally includes Hydraulic Pump, storage tanker, steering control valve etc., adopts 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 accomplished 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 accomplish handling maneuver, makes it light, laborsaving.In the prior art, when the automobile low speed driving, bearing circle is handled has portability preferably; When the speed of a motor vehicle faster the time, the power steerig pump rotating speed also rises, and causes 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 gets into 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 is complicated; Cost is higher, and is wayward; Chinese patent 200820227155.9; Name is called the restriction size that has adopted electromagnetic proportional valve to regulate bypass disc in " a kind of electrohydraulic power steering pump ", thus 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, adopts DC machine direct drive oil pump in the Chinese patent 200720034596.2, and 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 improve.
Summary of the invention
The present invention 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 invention is following:
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, deflection angle speed sensor, oil outlet pipe, oil return pipe; The oil outlet of said power steerig pump is connected with oil outlet pipe and after steering control valve connects oil return pipe, inserts oil tank; It also comprises a by pass line that valve member is installed; The signal output part of the signal output part of said car speed sensor, deflection angle speed sensor is connected with the corresponding signal input end of controller, and the signal output part of said 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 said by pass line, cut-offfing by said controller of each valve controlled respectively.
Further technical scheme is:
The latus rectum of each electromagnetic valve of parallel connection equates in the said by pass line.
Further technical scheme is again:
The latus rectum of each electromagnetic valve of parallel connection does not wait in the said 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 GES, 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 gone, 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, and in order to the maximum hydraulic fluid flow rate of bypass, the power-assisted that this moment, chaufeur obtained is minimum.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 through this combination control pattern, has so not only simplified the structure but also the easy accuracy control of realizing.
If three electromagnetic valves of parallel connection 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 present invention 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 of parallel connection does not wait and makes flow control mode more various in the by pass line.
(4) description of drawings:
Below will combine accompanying drawing and embodiment that the present invention is explained further details:
Fig. 1 is for adopting the structural representation of two knockdown first embodiment of the invention 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 present invention is done further detailed explanation.
In the automobile-used electric-controlled hydraulic steering swivel system shown in the first embodiment of the invention; 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 said power steerig pump 1 is connected with oil outlet pipe 2 and after steering control valve 5 connects oil return pipe 9, inserts oil tank 10; It also comprises a by pass line that is parallel with two bypass solenoid valve 3-1,3-2; The signal output part of the signal output part of said car speed sensor, deflection angle speed sensor is connected with the corresponding signal input end of controller; The signal output part of controller is connected with the signal input end of bypass solenoid valve 3-1,3-2 respectively, in order to control cut-offfing of valve 3-1,3-2 in the by pass line respectively.
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, in fuel-displaced pipeline 2, oil return line 9, a hydraulic three-way valve is installed respectively respectively; 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 GES control electromagnetic valve assembled units 3.The present invention in use when chaufeur just starts automobile, needs relatively large power steering; This moment, electromagnetic valve combination unit two closed electromagnetic valves did not play bypass action, and along with the increase of 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,, reduce entering with this and turn to the hydraulic fluid flow rate in the steering control valve whole valve opens; Thereby the increase steering effort increases road feel, improves the safety performance of whole steering swivel system.
In the second embodiment of the invention; 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, and 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 detailed 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, especially when each electromagnetic valve adopts the latus rectum that does not wait.This can make whole driving process all have good assist characteristic.
The present invention 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, deflection angle speed sensor, oil outlet pipe, oil return pipe; The oil outlet of said power steerig pump is connected with oil outlet pipe and after steering control valve connects oil return pipe, inserts oil tank; It also comprises a by pass line that valve member is installed; The signal output part of the signal output part of said car speed sensor, deflection angle speed sensor is connected with the corresponding signal input end of controller, and the signal output part of said 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 said by pass line, cut-offfing by said controller of each 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 of parallel connection equates in the said 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 of parallel connection does not wait in the said by pass line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105776595A CN102556148A (en) | 2010-12-08 | 2010-12-08 | Vehicular electrically-controlled hydraulic power steering system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105776595A CN102556148A (en) | 2010-12-08 | 2010-12-08 | Vehicular electrically-controlled hydraulic power steering system |
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| CN102556148A true CN102556148A (en) | 2012-07-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192872A (en) * | 2013-04-08 | 2013-07-10 | 郑州宇通客车股份有限公司 | Hybrid-driving electric hydraulic power steering system and control method thereof |
| CN103407488A (en) * | 2013-08-30 | 2013-11-27 | 徐州重型机械有限公司 | Wheel type crane and steering hydraulic control system thereof |
| CN104057999A (en) * | 2013-02-13 | 2014-09-24 | 操纵技术Ip控股公司 | Hydraulic-power Steering System With Magnetic Torque Overlay |
| CN106882264A (en) * | 2017-03-30 | 2017-06-23 | 福建船政交通职业学院 | A kind of automatically controlled variable-flow steering boost system |
| CN110435758A (en) * | 2018-05-02 | 2019-11-12 | 郑州宇通客车股份有限公司 | The adjusting method of wheel steering system, vehicle and power steering |
| CN114354197A (en) * | 2020-10-12 | 2022-04-15 | 本田技研工业株式会社 | Test device for internal combustion engine |
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| CN201890263U (en) * | 2010-12-08 | 2011-07-06 | 江苏罡阳动力转向器厂 | Electronically-controlled hydraulic power steering system for vehicle |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057999A (en) * | 2013-02-13 | 2014-09-24 | 操纵技术Ip控股公司 | Hydraulic-power Steering System With Magnetic Torque Overlay |
| CN104057999B (en) * | 2013-02-13 | 2017-01-04 | 操纵技术Ip控股公司 | There is the hydraulic power steering system of magnetic moment of torsion superposition |
| CN103192872A (en) * | 2013-04-08 | 2013-07-10 | 郑州宇通客车股份有限公司 | Hybrid-driving electric hydraulic power steering system and control method thereof |
| WO2014166314A1 (en) * | 2013-04-08 | 2014-10-16 | 郑州宇通客车股份有限公司 | Hybrid-driving electric hydraulic power-assisted steering system and control method thereof |
| CN103192872B (en) * | 2013-04-08 | 2016-04-20 | 郑州宇通客车股份有限公司 | The electric hydraulic power-assisted steering system of combination drive and control method thereof |
| CN103407488A (en) * | 2013-08-30 | 2013-11-27 | 徐州重型机械有限公司 | Wheel type crane and steering hydraulic control system thereof |
| CN106882264A (en) * | 2017-03-30 | 2017-06-23 | 福建船政交通职业学院 | A kind of automatically controlled variable-flow steering boost system |
| CN110435758A (en) * | 2018-05-02 | 2019-11-12 | 郑州宇通客车股份有限公司 | The adjusting method of wheel steering system, vehicle and power steering |
| CN114354197A (en) * | 2020-10-12 | 2022-04-15 | 本田技研工业株式会社 | Test device for internal combustion engine |
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Application publication date: 20120711 |