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Wire-controlled hydraulic steering system

A steering system and hydraulic technology, applied in steering mechanism, fluid steering mechanism, power steering mechanism, etc., can solve the problems of inaccurate steering road feeling simulation, low actual steering accuracy, poor stability of steering system, etc., and achieve service life Long, ensure fast and accurate, increase the effect of steering precision

Active Publication Date: 2017-07-07
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the high cost due to the increase of the road sense motor in the existing steering by wire technology, the poor stability of the steering system when the power failure occurs, the inaccurate steering road feel simulation and the inaccurate actual steering accuracy. high problem, providing a hydraulic steering system with a drive-by-wire

Method used

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Embodiment Construction

[0044] The present invention is described in detail below in conjunction with accompanying drawing:

[0045] A control-by-wire hydraulic steering system according to the present invention includes a steering wheel unit A, a steering feel simulation unit B, an electronic control unit (ECU) C, and a steering execution unit D.

[0046] The steering wheel unit A includes a steering wheel 1 , a steering wheel angle sensor 2 , a gear 3 , a rack 4 , a first tension pressure sensor 5 , a steering feel simulation master cylinder 10 and a steering shaft 42 .

[0047] The steering wheel 1 is fixedly connected to the upper end of the steering shaft 42 . The lower end of the steering shaft 42 is fixedly connected to the gear 3 by means of keys, splines or other mechanical connection structures, so that the steering shaft 42 drives the gear 3 to rotate.

[0048] The steering wheel angle sensor 2 is installed on the steering shaft 42, the steering wheel angle sensor 2 adopts a photoelectric...

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Abstract

The invention discloses a wire-controlled hydraulic steering system. The system solves the problems of high cost caused by adding a road sensing motor, poor stability during power-off failure of the steering system and the like. The system comprises a steering wheel unit, a steering road sensing simulation unit, an electronic control unit and a steering execution unit; the steering wheel unit is connected with the steering road sensing simulation unit by a pipeline via a first oil port and a second oil port of a steering road sensing simulation main cylinder and one port of each of a first switching solenoid valve, a second switching solenoid valve, a third switching solenoid valve and a fourth switching solenoid valve; the steering road sensing simulation unit is connected with the steering execution unit by a pipeline via the other ports of the third switching solenoid valve and the fourth switching solenoid valve, one port of each of a first high-speed switching valve and a second high-speed switching valve as well as a first oil inlet and a second oil inlet of a steering power main cylinder; and the electronic control unit is connected with the steering wheel unit, the steering road sensing simulation unit and the steering execution unit by electric wires respectively.

Description

technical field [0001] The invention creates a steering device belonging to the technical field of automobile steering systems. More specifically, the present invention relates to a hydraulic steer-by-wire system. Background technique [0002] The steering system of a car is an important part of the car driving system. The function of the steering system is to control the driving direction of the car according to the driver's wishes. Initially, the steering system of a car is usually a mechanical steering system, all of its power transmission parts are mechanical, and the driver's physical strength is used as the power source of the steering. Because the structure of the mechanical steering system is too complicated, and the driver's hand force required for steering is relatively large, and the load on the driver is relatively high, it is gradually eliminated. With the continuous improvement of automobile technology, power steering system has gradually entered people's fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/09B62D5/06
CPCB62D5/06B62D5/091
Inventor 李静王晨刘鹏谷贺冲韩紫云冯酉楠董德志
Owner JILIN UNIV
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