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A wire-controlled hydraulic steering device comprising an isolated circuit

A steering device and wire-controlled technology, which is applied in the field of steering devices and wire-controlled hydraulic steering devices, can solve the problems of poor steering system stability and increased cost, and achieve the effects of good steering characteristics and low cost.

Pending Publication Date: 2019-01-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems in the existing control-by-wire steering technology, such as the cost increase due to the increase of the road sense motor, the poor stability of the steering system when the electronic control system fails, and the problem of changing to the hydraulic steering by wire Afterwards, the problem of poor stability of the steering system after oil leakage occurred

Method used

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  • A wire-controlled hydraulic steering device comprising an isolated circuit
  • A wire-controlled hydraulic steering device comprising an isolated circuit
  • A wire-controlled hydraulic steering device comprising an isolated circuit

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Embodiment Construction

[0022] In order to better understand the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like figure 1As shown, a control-by-wire hydraulic steering device including an isolated circuit includes a steering input unit that provides steering input according to the driver’s operation; a control unit that controls the pressure generating unit to generate oil pressure according to the steering input of the steering input unit; the wheel steering unit , to generate the steering torque of the corresponding wheel; and the oil supply pipeline, which transmits the steering oil pressure to the corresponding wheel steering unit; the oil supply pipeline connects the oil to the pressure generating unit, forming two oil supply branches to supply the left and right respectively Wheels, on-off valves are installed at the connection between the pressure generating unit and each oil supp...

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Abstract

The invention discloses a wire-controlled hydraulic steering device comprising a steering input unit, a control unit, a pressure generating unit, a wheel steering unit and a fuel supply line, the oilsupply line connects the oil to the pressure generating unit to form two oil supply branches for supplying to the left and right wheels respectively, a switch valve is installed at the connection partof the pressure generating unit and each oil supply branch, the control unit prevents oil pressure from being supplied from the pressure generating unit to the oil supply branch when the on-off valveis controlled to be closed, and when a leak occurs, the control unit controls the separation valve to open the two oil supply branches to be connected to each other and shield the oil leak section toensure sufficient steering oil pressure. The invention is provided with two oil supply branches, which are respectively supplied to left and right wheels, and the two oil supply branches are mutuallyindependent when oil leakage does not occur. When leakage occurs, the two oil supply branches are opened through the separation valve to connect with each other and shield the oil leakage section toensure sufficient steering oil pressure.

Description

technical field [0001] The invention relates to a steering device in the technical field of automobile steering systems, in particular to a wire-controlled hydraulic steering device including an isolation circuit. 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 transmission structures are mechanical, and the driver's physical strength is used as the power source for 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 field of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/06B62D5/065B62D6/00B62D113/00B62D137/00
CPCB62D5/06B62D5/062B62D5/065B62D6/001
Inventor 严汶均上官文斌
Owner SOUTH CHINA UNIV OF TECH
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