CN202345756U - Automotive hydraulic electric power-assisting system - Google Patents
Automotive hydraulic electric power-assisting system Download PDFInfo
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- CN202345756U CN202345756U CN201120436487XU CN201120436487U CN202345756U CN 202345756 U CN202345756 U CN 202345756U CN 201120436487X U CN201120436487X U CN 201120436487XU CN 201120436487 U CN201120436487 U CN 201120436487U CN 202345756 U CN202345756 U CN 202345756U
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Abstract
The utility model relates to an automotive hydraulic electric power-assisting system which comprises a hydraulic pump and a motor for driving the hydraulic pump; an oil inlet of the hydraulic pump is connected with an oil storage tank; an oil outlet of the hydraulic pump is connected with an energy accumulator through a non-return valve; the energy accumulator is connected with a steering power-assisting cylinder; and the steering power-assisting cylinder is connected with the oil storage tank. The automotive hydraulic electric power-assisting system retains a conventional steering execution mechanism on a vehicle, and only changes a hydraulic system, so that the low-speed steering returnability of the vehicle is high, and meanwhile through rational control, the whole system has the characteristics of slow steering at a low speed and stable steering at a high speed; and after the motor stops work, the non-return hydraulic valve is closed to effectively protect the hydraulic pump and prolong the service lives of key components of the system. A vehicle-mounted low-pressure system is adopted as a power supply of the motor to provide energy, so that the automotive hydraulic electric power-assisting system is suitable for all vehicles.
Description
Technical field
The utility model 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.
The utility model content
The purpose of the utility model provides a kind of automobile hydraulic electric boosting steering system, and is 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 utility model 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.
The automobile hydraulic electric boosting steering system of the utility model 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 utility model;
Fig. 2 is the structural representation of second kind of embodiment of the utility model.
The specific embodiment
Be illustrated in figure 1 as the structural representation of a kind of embodiment of the utility model automobile hydraulic electric boosting steering system; 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.
Another kind of embodiment is as shown in Figure 2 for the utility model; 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.
The principle of work of the utility model: 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 |
|---|---|---|---|
| CN201120436487XU CN202345756U (en) | 2011-11-07 | 2011-11-07 | Automotive hydraulic electric power-assisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120436487XU CN202345756U (en) | 2011-11-07 | 2011-11-07 | Automotive hydraulic electric power-assisting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202345756U true CN202345756U (en) | 2012-07-25 |
Family
ID=46534780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120436487XU Expired - Fee Related CN202345756U (en) | 2011-11-07 | 2011-11-07 | Automotive hydraulic electric power-assisting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202345756U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424068A (en) * | 2011-11-07 | 2012-04-25 | 郑州宇通客车股份有限公司 | Automobile hydraulic power-driven assisted steering system |
| CN111497935A (en) * | 2020-05-06 | 2020-08-07 | 徐州重型机械有限公司 | Hydraulic steering system and mobile crane |
-
2011
- 2011-11-07 CN CN201120436487XU patent/CN202345756U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424068A (en) * | 2011-11-07 | 2012-04-25 | 郑州宇通客车股份有限公司 | Automobile hydraulic power-driven assisted steering system |
| CN102424068B (en) * | 2011-11-07 | 2014-05-14 | 郑州宇通客车股份有限公司 | Automobile hydraulic power-driven assisted steering system |
| CN111497935A (en) * | 2020-05-06 | 2020-08-07 | 徐州重型机械有限公司 | Hydraulic steering system and mobile crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20181107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |