CN102424068B - Automobile hydraulic power-driven assisted steering system - Google Patents
Automobile hydraulic power-driven assisted steering system Download PDFInfo
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- CN102424068B CN102424068B CN201110348109.0A CN201110348109A CN102424068B CN 102424068 B CN102424068 B CN 102424068B CN 201110348109 A CN201110348109 A CN 201110348109A CN 102424068 B CN102424068 B CN 102424068B
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Abstract
The invention relates to an automobile hydraulic power-driven assisted steering system, comprising a hydraulic pump and a motor which drives the hydraulic pump, wherein the oil inlet of the hydraulic pump is connected with an oil storage tank, the oil outlet of the hydraulic pump is connected with an energy storing device by virtue of a check valve, the energy storing device is connected with a steering assisted cylinder, and the steering assisted cylinder is connected with the oil storage tank. The automobile hydraulic power-driven assisted steering system provided by the invention remains a steering actuating mechanism on the traditional automobile, only a hydraulic system is changed, low-speed righting capability of an automobile is good, and reasonable control is adopted, thus the entire system has the characteristics of light steering at low speed and stable steering at high speed, a one-way hydraulic valve is closed after a motor stops working, the hydraulic pump can be effectively protected, and service lives of key parts of the system can be prolonged. A power source of the motor adopts a vehicle-mounted low-voltage system for providing energy, thus the automobile hydraulic power-driven assisted steering system provided by the invention is applicable to all the vehicles.
Description
Technical field
The present invention relates to a kind of automobile hydraulic power-driven assisted steering system.
Background technology
Traditional hydraulic booster vehicle steering system is generally made up of parts such as Hydraulic Pump, low/high pressure fuel pipe, pressure flow hybrid control valve body, driving band, petrol storage tank and steering jacks.Its assist characteristic is relevant with the load of vehicle propons and deflection angle.Its working process is as follows: the work of (1) driven by engine hydraulic oil pump is to system pressure oil output; (2) system oil pressure reaches after a certain threshold value, Hydraulic Pump pressure release; (3) in the process of pressure release, Hydraulic Pump works on, and makes the oil pressure of whole high-pressure oil passage maintain a certain preset value; (4) engine stop work, system power steering disappears.
By analyzing the following shortcoming that can find out that above-mentioned steering swivel system exists: (1) is as long as engine running, no matter whether vehicle needs power steering, steering boost system is just always in running order, and the load that has increased driving engine has also affected the heat-sinking capability of Hydraulic Pump simultaneously; (2) power steerig pump is equipped with blowdown valve, and when pressure exceedes setting threshold, blowdown valve is opened pressure release, thereby makes the waste of pairing energy; (3) the in running order oil pressure that causes in whole system in pipeline and parts is higher all the time for Hydraulic Pump, and the life-span of whole system is had a certain impact; (4) cornering properties is only relevant with steering load, and the speed of a motor vehicle is irrelevant, turns to effort while causing low speed, turns to unstable phenomenon when high speed, and traffic safety is had a certain impact.
Chinese Patent Application No. 201010226233.5 discloses the patent document that name is called " automobile and electric hydraulic power-assisted steering system thereof, control method ", this steering swivel system is with Hydraulic Pump of a driven by motor, Hydraulic Pump pressure oil output, pressure oil is stored in 6 the insides, turning to actuating unit is also to design separately, its shortcoming is: (1) turns to actuating unit is through independent particular design, larger to the change of existing steering swivel system; (2) steering reversal ability while causing whole steering swivel system low speed due to the particular design of steering jack structure; (3) this cover system can only be used on pure electronic and hybrid electric vehicle, can not be applied in above traditional vehicle.
Chinese Patent Application No. 03802104.8 discloses the patent document that name is called " automobile hydraulic power steering system efficiently ", this cover system is mainly to have increased controllable clutch between driving engine and Hydraulic Pump, thereby realize energy-conservation object, the shortcoming of this cover system is as follows: the primary mover of (1) this cover system remains driving engine, mean that this cover system can only use on the vehicle that has driving engine, all can not use for pure electric automobile and trackless trolley car; (2) between the drive end of power-transfer clutch and driving engine time, by what realize with transmission, effect is lower, and noise is larger.
Summary of the invention
The object of this invention is to provide a kind of automobile hydraulic power-driven assisted steering system, larger to solve the change of the existing steering swivel system of existing automobile hydraulic power-driven assisted steering system, awkward problem.
For achieving the above object, the present invention adopts following technical scheme: a kind of automobile hydraulic power-driven assisted steering system, comprise Hydraulic Pump and drive the motor of Hydraulic Pump, the oil inlet of described Hydraulic Pump is connected with petrol storage tank, the oil outlet of Hydraulic Pump is connected with accumulator by a check valve, accumulator is connected with steering jack, and steering jack is connected with petrol storage tank.
This system also comprises a controlling of sampling device, described controlling of sampling device is for obtaining and process from the rotation sensor of steering wheel angle, for obtaining the car speed sensor of the speed of a motor vehicle and for obtaining the signal of the pressure sensor of oil pressure in accumulator, and controlling of sampling device is connected with motor control.
Described controlling of sampling device comprises detecting device and the control setup with its control linkage, and described detecting device is for obtaining from the rotation sensor of steering wheel angle, for obtaining the car speed sensor of the speed of a motor vehicle and for obtaining the signal of the pressure sensor of oil pressure in accumulator; Described control setup is connected with motor control.
The propulsion source of described electrical motor adopts vehicle-mounted low-pressure system.
Described electrical motor connects and adopts band transmission or gear transmission to be connected with Hydraulic Pump.
Automobile hydraulic power-driven assisted steering system of the present invention has retained the actuating unit that turns in traditional vehicle; only change hydraulic efficiency pressure system; so it is good that the low speed of vehicle returns positive ability; add rational control, while making whole system there is low speed, turn to gently, when high speed, turn to steady feature; after electrical motor quits work; one-way hydraulic valve is closed, and can protect Hydraulic Pump by actv., extends the service life of system core parts.The propulsion source of electrical motor adopts vehicle-mounted low-pressure system that energy is provided, and makes it be applicable to all vehicles.
Between motor and Hydraulic Pump, by band transmission, gear-driven mechanical connection, improve traditional efficiency, reduced noise.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first embodiment of the present invention;
Fig. 2 is the structural representation of the second embodiment of the present invention.
The specific embodiment
Be illustrated in figure 1 the structural representation of a kind of embodiment of automobile hydraulic power-driven assisted steering system of the present invention, as seen from the figure, this system comprises Hydraulic Pump and drives the motor of Hydraulic Pump, the oil inlet of Hydraulic Pump is connected with petrol storage tank, the oil outlet of Hydraulic Pump is connected with accumulator by a check valve, accumulator is connected with steering jack, and steering jack is connected with petrol storage tank.
Electrical motor is connected with hydraulic pump driving, and Hydraulic Pump pump is got the low pressure fluid of petrol storage tank and is connected with accumulator by high-pressure oil passage, and accumulator stores and in the time turning to work, outputs to steering jack from Hydraulic Pump high-voltage oil liquid out; Steering jack is connected with petrol storage tank by low pressure oil return line.
The steering swivel system of the present embodiment also comprises a controlling of sampling device, controlling of sampling device is for obtaining and process from the rotation sensor of steering wheel angle, for obtaining the car speed sensor of the speed of a motor vehicle and for obtaining the signal of the pressure sensor of oil pressure in accumulator, and controlling of sampling device is connected with motor control.Controlling of sampling device is used for obtaining and turns to control parameter signal, and according to pre-conditioned definite output suitable control signal to electrical motor.Electrical motor is accepted the control signal of controlling of sampling device, thereby becomes mechanical energy to drive high-pressure oil pump work the electric energy conversion in energy accumulating device.
Between Hydraulic Pump and accumulator, install check valve additional, to prevent that the hydraulic oil backflow in accumulator from affecting the work of Hydraulic Pump.Accumulator is connected by high pressure fuel pipe with steering jack, and the energy in accumulator can temporarily meet power steering demand to a certain extent, does not need design separately to turn to actuating unit.
Between electrical motor in this steering swivel system and Hydraulic Pump, realize operating being in transmission connection, concrete method of attachment comprises band transmission or gear transmission.
The another kind of embodiment of the present invention as shown in Figure 2, controlling of sampling device comprises detecting device and the control setup with its control linkage, and detecting device is for obtaining from the rotation sensor of steering wheel angle, for obtaining the car speed sensor of the speed of a motor vehicle and for obtaining the signal of the pressure sensor of oil pressure in accumulator; Control setup adopts microprocessor, what Real-time Collection carried out self-test device turns to control parameter, according to control logic default in control setup and control threshold value output control command, and control threshold value and at least carry out real-time calibration according to the one in vehicle speed signal, front axle load, steering wheel angle signal and hydraulic power accumulator pressure signal.
The propulsion source of this cover system electrical motor adopts vehicle-mounted low-pressure system that energy is provided, thoroughly cut off the contact between Hydraulic Pump and driving engine, it is low pressure 24V/12V power supply that Vehicular power system adopts, and is applicable to pure electric automobile, hybrid vehicle and general conventional truck.
Principle of work of the present invention: adopt control setup that the pressure control threshold value in the hydraulic energy storage device collecting is made as to value range, and according to pre-conditioned definite output suitable control signal to electrical motor, control the startup of electrical motor and stop, specifically pre-conditioned is: in real time according to vehicle speed signal and the required oil pressure threshold value of steering wheel angle calculated signals, oil pressure in more required oil pressure threshold value and accumulator, and obtain the judged result of whether exporting control signal.If it is low that comparative result characterizes pressure in hydraulic power accumulator lower than lower limit, function unit output control command starts electric driver and hydraulic pump works; If relatively to characterize pressure in hydraulic power accumulator higher than higher limit high for comparative result, function unit output control command stops electric driver and hydraulic pump works.
Claims (4)
1. an automobile hydraulic power-driven assisted steering system, it is characterized in that, comprise Hydraulic Pump and drive hydraulic pressure pump motor, the oil inlet of described Hydraulic Pump is connected with petrol storage tank, the oil outlet of Hydraulic Pump is connected with the input end of accumulator by a check valve and corresponding high-pressure oil passage, the mouth of accumulator is connected with steering jack by high pressure fuel pipe, and steering jack is connected with petrol storage tank; The propulsion source of described electrical motor adopts vehicle-mounted low-pressure system.
2. automobile hydraulic power-driven assisted steering system according to claim 1, it is characterized in that: this system also comprises a controlling of sampling device, described controlling of sampling device is for obtaining and process from the rotation sensor of steering wheel angle, for obtaining the car speed sensor of the speed of a motor vehicle and for obtaining the signal of the pressure sensor of oil pressure in accumulator, and controlling of sampling device is connected with motor control.
3. automobile hydraulic power-driven assisted steering system according to claim 1, it is characterized in that: this system also comprises a controlling of sampling device, described controlling of sampling device comprises detecting device and the control setup with its control linkage, and described detecting device is for obtaining from the rotation sensor of steering wheel angle, for obtaining the car speed sensor of the speed of a motor vehicle and for obtaining the signal of the pressure sensor of oil pressure in accumulator; Described control setup is connected with motor control.
4. automobile hydraulic power-driven assisted steering system according to claim 1 and 2, is characterized in that: described electrical motor connects and adopts band transmission or gear transmission to be connected with Hydraulic Pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110348109.0A CN102424068B (en) | 2011-11-07 | 2011-11-07 | Automobile hydraulic power-driven assisted steering system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110348109.0A CN102424068B (en) | 2011-11-07 | 2011-11-07 | Automobile hydraulic power-driven assisted steering system |
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| CN102424068A CN102424068A (en) | 2012-04-25 |
| CN102424068B true CN102424068B (en) | 2014-05-14 |
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| CN201110348109.0A Active CN102424068B (en) | 2011-11-07 | 2011-11-07 | Automobile hydraulic power-driven assisted steering system |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102700605A (en) * | 2012-05-30 | 2012-10-03 | 潍柴动力股份有限公司 | Hydraulic power-assisted steering system of hybrid vehicle and control method for hydraulic power-assisted steering system |
| CN104724165B (en) * | 2013-12-20 | 2017-01-25 | 北汽福田汽车股份有限公司 | Vehicle steering device, control method thereof and vehicle |
| CN104908807A (en) * | 2015-07-13 | 2015-09-16 | 北汽福田汽车股份有限公司 | Noise and vibration reduction device for steering system |
| CN105752152A (en) * | 2016-05-17 | 2016-07-13 | 山东汇川汽车部件有限公司 | Electric hydraulic power steering system for automobile |
| CN113635967B (en) * | 2021-09-17 | 2022-04-26 | 山东蓬翔汽车有限公司 | Control method of energy-saving hydraulic power-assisted steering system of heavy-duty car |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200954830Y (en) * | 2006-03-31 | 2007-10-03 | 王钊 | Hydraulic boosted steering system |
| EP2159119A1 (en) * | 2008-08-29 | 2010-03-03 | Paccar Inc. | Steering systems and methods for hybrid vehicles |
| CN101863284A (en) * | 2010-07-09 | 2010-10-20 | 天津市松正电动科技有限公司 | Automobile, and electric hydraulic power-assisted steering system and control method thereof |
| CN202345756U (en) * | 2011-11-07 | 2012-07-25 | 郑州宇通客车股份有限公司 | Automotive hydraulic electric power-assisting system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3271333B2 (en) * | 1992-11-26 | 2002-04-02 | 豊田工機株式会社 | Power steering device |
| JPH08324445A (en) * | 1995-05-31 | 1996-12-10 | Unisia Jecs Corp | Power steering device |
| US6945352B2 (en) * | 2003-05-29 | 2005-09-20 | Techo Corporation | Force-based power steering system |
| JP2008195307A (en) * | 2007-02-15 | 2008-08-28 | Toyota Motor Corp | Power steering system |
| US7743610B2 (en) * | 2007-11-30 | 2010-06-29 | Ford Global Technologies, Llc | Fuel efficient hydraulic power steering |
-
2011
- 2011-11-07 CN CN201110348109.0A patent/CN102424068B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200954830Y (en) * | 2006-03-31 | 2007-10-03 | 王钊 | Hydraulic boosted steering system |
| EP2159119A1 (en) * | 2008-08-29 | 2010-03-03 | Paccar Inc. | Steering systems and methods for hybrid vehicles |
| CN101863284A (en) * | 2010-07-09 | 2010-10-20 | 天津市松正电动科技有限公司 | Automobile, and electric hydraulic power-assisted steering system and control method thereof |
| CN202345756U (en) * | 2011-11-07 | 2012-07-25 | 郑州宇通客车股份有限公司 | Automotive hydraulic electric power-assisting system |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2008-195307A 2008.08.28 |
| JP特开平6-316271A 1994.11.15 |
| JP特开平8-324445A 1996.12.10 |
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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. |