CN102424068A - Automobile hydraulic power-driven assisted steering system - Google Patents
Automobile hydraulic power-driven assisted steering system Download PDFInfo
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- CN102424068A CN102424068A CN2011103481090A CN201110348109A CN102424068A CN 102424068 A CN102424068 A CN 102424068A CN 2011103481090 A CN2011103481090 A CN 2011103481090A CN 201110348109 A CN201110348109 A CN 201110348109A CN 102424068 A CN102424068 A CN 102424068A
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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 electric boosting steering system.
Background technology
Traditional automobile hydraulic electric power steering system is generally by component set-ups such as Hydraulic Pump, low/high pressure fuel pipe, pressure flow control valve body, driving band, petrol storage tank and steering jacks.Its assist characteristic is relevant with load of vehicle propons and deflection angle.Its working process is following: the work of (1) engine drives hydraulic oil pump is to the system outlet pressure oil; (2) after system oil pressure reaches a certain threshold value, the 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 working, then system's power steering disappears.
Through 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 in running order always, and the load that has increased driving engine has also influenced the heat-sinking capability of Hydraulic Pump simultaneously; (2) power steerig pump is equipped with blowdown valve, and blowdown valve was opened pressure release when pressure surpassed setting threshold, thereby caused the waste to energy; (3) the in running order all the time oil pressure that causes in the total system in the pipeline and parts of Hydraulic Pump is higher, and there is certain influence in life-span of total system; (4) only relevant with steering load and the speed of a motor vehicle of cornering properties has nothing to do, and turns to effort when causing low speed, turns to unstable phenomenon during high speed, and traffic safety is had certain influence.
One Chinese patent application numbers 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 are stored in 6 the insides, and turning to actuating unit also is independent design-calculated; Its shortcoming is: (1) turns to actuating unit is through independent particular design, bigger to the change of existing steering swivel system; (2) because the particular design of steering jack structure steering reversal ability when causing whole steering swivel system low speed; (3) this cover system can only be used on pure electronic and the hybrid vehicle, can not be applied in above the traditional vehicle.
One Chinese patent application number 03802104.8 discloses the patent document that name is called " automobile hydraulic power steering system efficiently "; This cover system mainly is between driving engine and Hydraulic Pump, to have increased controllable clutch; Thereby realized purpose of energy saving; The shortcoming of this cover system is following: the primary mover of (1) this cover system remains driving engine, means that this cover system can only use and having on the vehicle of driving engine, all can not use for pure electric automobile and trackless trolley car; (2) realize that effect is lower between the drive end of power-transfer clutch and the driving engine time through strap drive, noise is bigger.
Summary of the invention
The purpose of this invention is to provide a kind of automobile hydraulic electric boosting steering system, bigger with the change that solves the existing steering swivel system of existing automobile hydraulic electric boosting steering system, awkward problem.
For realizing above-mentioned purpose; The present invention adopts following technical scheme: a kind of automobile hydraulic electric boosting steering system; Comprise Hydraulic Pump and the motor that drives Hydraulic Pump, the oil inlet of said Hydraulic Pump is connected with petrol storage tank, and the oil outlet of Hydraulic Pump is connected with accumulator through 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; Said controlling of sampling device is used to obtain and handle the rotation sensor from steering wheel angle, the signal that is used to obtain the car speed sensor of the speed of a motor vehicle and is used to obtain the pressure sensor of oil pressure in the accumulator, and the controlling of sampling device is connected with motor control.
Said controlling of sampling device comprises that detecting device reaches and the control setup of its control linkage, and said detecting device is used to obtain the rotation sensor from steering wheel angle, the signal that is used to obtain the car speed sensor of the speed of a motor vehicle and is used to obtain the pressure sensor of oil pressure in the accumulator; Said control setup is connected with motor control.
The propulsion source of said electrical motor adopts vehicle-mounted low-pressure system.
Said electrical motor connects with Hydraulic Pump and adopts strap drive or gear transmission to be connected.
Automobile hydraulic electric boosting steering system of the present invention has kept the actuating unit that turns on the traditional vehicle, has only changed hydraulic efficiency pressure system, so that the low speed of vehicle returns positive ability is good; Add rational control, turn to when making whole system have low speed gently, turn to steady characteristics during high speed; After electrical motor quits work; Unidirectional hydraulic valve closes can be protected Hydraulic Pump by actv., prolongs 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.
Through strap drive, gear-driven mechanical connection, improve traditional efficiency between motor and the Hydraulic Pump, reduced noise.
Description of drawings
Fig. 1 is the structural representation of first kind of embodiment of the present invention;
Fig. 2 is the structural representation of second kind of embodiment of the present invention.
The specific embodiment
Be illustrated in figure 1 as the structural representation of a kind of embodiment of automobile hydraulic electric boosting steering system of the present invention; Can know by figure; This system comprises Hydraulic Pump and the motor that drives Hydraulic Pump, and the oil inlet of Hydraulic Pump is connected with petrol storage tank, and the oil outlet of Hydraulic Pump is connected with accumulator through a check valve; Accumulator is connected with steering jack, and steering jack is connected with petrol storage tank.
Electrical motor and Hydraulic Pump are in transmission connection, and the Hydraulic Pump pump is got the low pressure fluid of petrol storage tank and is connected with accumulator through high-pressure oil passage, and accumulator stores the high-voltage oil liquid that comes out from Hydraulic Pump and when turning to work, outputs to the steering jack; Steering jack is connected with petrol storage tank through the low pressure oil return line.
The steering swivel system of present embodiment also comprises a controlling of sampling device; The controlling of sampling device is used to obtain and handle the rotation sensor from steering wheel angle, the signal that is used to obtain the car speed sensor of the speed of a motor vehicle and is used to obtain the pressure sensor of oil pressure in the accumulator, and the controlling of sampling device is connected with motor control.The controlling of sampling device is used to obtain and turns to the controlled variable signal, and according to pre-conditioned definite output appropriate control signal to electrical motor.Electrical motor is accepted the control signal of controlling of sampling device, drives high-pressure oil pump work thereby the electric energy in the energy accumulating device is changed into mechanical energy.
Install check valve additional between Hydraulic Pump and the accumulator, influence the work of Hydraulic Pump to prevent the hydraulic oil backflow in the accumulator.Accumulator is connected through high pressure fuel pipe with steering jack, and the energy in the accumulator can temporarily satisfy power steering demand to a certain extent, and not needing separately, design turns to actuating unit.
Realize operating between electrical motor in this steering swivel system and the Hydraulic Pump being in transmission connection, concrete method of attachment comprises strap drive or gear transmission.
The another kind of embodiment of the present invention is as shown in Figure 2; The controlling of sampling device comprises that detecting device reaches and the control setup of its control linkage, and detecting device is used to obtain the rotation sensor from steering wheel angle, the signal that is used to obtain the car speed sensor of the speed of a motor vehicle and is used to obtain the pressure sensor of oil pressure in the accumulator; Control setup adopts microprocessor; Gather the controlled variable that turns to of self-test device in real time; According to control logic preset in the control setup and control threshold value output control command, and the control threshold value is come real-time calibration according to a kind of in GES, preceding axle load, steering wheel angle signal and the fluid power accumulator pressure signal at least.
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 the 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 that collects is made as value range; And according to pre-conditioned definite output appropriate control signal to electrical motor; The startup at control motor and stopping; Specifically pre-conditioned is: in real time according to GES and the required oil pressure threshold value of steering wheel angle calculated signals, and oil pressure in more required oil pressure threshold value and the accumulator, and whether acquisition exports the judged result of control signal.If it is low that comparative result is lower than the pressure that lower limit then characterizes in the fluid power accumulator, then function unit output control command starts electric driver and hydraulic pump works; Then characterize the pressure height in the fluid power accumulator if the comparison comparative result is higher than higher limit, then function unit output control command stops electric driver and hydraulic pump works.
Claims (5)
1. automobile hydraulic electric boosting steering system; It is characterized in that; Comprise Hydraulic Pump and the motor that drives Hydraulic Pump, the oil inlet of said Hydraulic Pump is connected with petrol storage tank, and the oil outlet of Hydraulic Pump is connected with accumulator through a check valve; Accumulator is connected with steering jack, and steering jack is connected with petrol storage tank.
2. automobile hydraulic electric boosting steering system according to claim 1; It is characterized in that: this system also comprises a controlling of sampling device; Said controlling of sampling device is used to obtain and handle the rotation sensor from steering wheel angle, the signal that is used to obtain the car speed sensor of the speed of a motor vehicle and is used to obtain the pressure sensor of oil pressure in the accumulator, and the controlling of sampling device is connected with motor control.
3. automobile hydraulic electric boosting steering system according to claim 1 and 2; It is characterized in that: said controlling of sampling device comprises that detecting device reaches and the control setup of its control linkage, and said detecting device is used to obtain the rotation sensor from steering wheel angle, the signal that is used to obtain the car speed sensor of the speed of a motor vehicle and is used to obtain the pressure sensor of oil pressure in the accumulator; Said control setup is connected with motor control.
4. automobile hydraulic electric boosting steering system according to claim 3 is characterized in that: the propulsion source of said electrical motor adopts vehicle-mounted low-pressure system.
5. automobile hydraulic electric boosting steering system according to claim 1 and 2 is characterized in that: said electrical motor connects with Hydraulic Pump and adopts strap drive or gear transmission to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110348109.0A CN102424068B (en) | 2011-11-07 | 2011-11-07 | Automobile hydraulic power-driven assisted steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110348109.0A CN102424068B (en) | 2011-11-07 | 2011-11-07 | Automobile hydraulic power-driven assisted steering system |
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| CN102424068A true CN102424068A (en) | 2012-04-25 |
| CN102424068B CN102424068B (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (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 |
| 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 |
| 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 |
| CN113635967A (en) * | 2021-09-17 | 2021-11-12 | 山东蓬翔汽车有限公司 | Control method of energy-saving hydraulic power-assisted steering system of heavy-duty car |
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| JPH06316271A (en) * | 1992-11-26 | 1994-11-15 | Toyoda Mach Works Ltd | Power steering system |
| JPH08324445A (en) * | 1995-05-31 | 1996-12-10 | Unisia Jecs Corp | Power steering device |
| US20040238260A1 (en) * | 2003-05-29 | 2004-12-02 | Phillips Edward H. | Force-based power steering system |
| CN200954830Y (en) * | 2006-03-31 | 2007-10-03 | 王钊 | Hydraulic boosted steering system |
| JP2008195307A (en) * | 2007-02-15 | 2008-08-28 | Toyota Motor Corp | Power steering system |
| US20090139223A1 (en) * | 2007-11-30 | 2009-06-04 | Ford Global Technologies, Llc | Fuel efficient hydraulic power steering |
| 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 |
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2011
- 2011-11-07 CN CN201110348109.0A patent/CN102424068B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06316271A (en) * | 1992-11-26 | 1994-11-15 | Toyoda Mach Works Ltd | Power steering system |
| JPH08324445A (en) * | 1995-05-31 | 1996-12-10 | Unisia Jecs Corp | Power steering device |
| US20040238260A1 (en) * | 2003-05-29 | 2004-12-02 | Phillips Edward H. | Force-based power steering system |
| CN200954830Y (en) * | 2006-03-31 | 2007-10-03 | 王钊 | Hydraulic boosted steering system |
| JP2008195307A (en) * | 2007-02-15 | 2008-08-28 | Toyota Motor Corp | Power steering system |
| US20090139223A1 (en) * | 2007-11-30 | 2009-06-04 | Ford Global Technologies, Llc | Fuel efficient hydraulic power steering |
| 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 |
Cited By (6)
| 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 |
| CN113635967A (en) * | 2021-09-17 | 2021-11-12 | 山东蓬翔汽车有限公司 | Control method of energy-saving hydraulic power-assisted steering system of heavy-duty car |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102424068B (en) | 2014-05-14 |
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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. |
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