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An energy-saving electro-hydraulic power steering system and control method for heavy vehicles

A technology for power steering and heavy-duty vehicles, applied in electric steering mechanisms, power steering mechanisms, vehicle components, etc., can solve the problems of inability to achieve high-precision control, and the steering system control method is not flexible enough to reduce pump energy consumption and save energy. The effect of reducing the flow area and reducing the throttling loss

Active Publication Date: 2022-04-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention improves the above problems, that is, the technical problem to be solved by the present invention is that the control mode of the existing steering system is not flexible enough to achieve high-precision control, and the pumping pressure cannot be adjusted, resulting in high energy consumption

Method used

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  • An energy-saving electro-hydraulic power steering system and control method for heavy vehicles
  • An energy-saving electro-hydraulic power steering system and control method for heavy vehicles
  • An energy-saving electro-hydraulic power steering system and control method for heavy vehicles

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] Such as Figure 1~3 as shown, figure 1 It is a schematic diagram of an energy-saving electro-hydraulic power steering system for heavy vehicles.

[0046] In this embodiment, the energy-saving electro-hydraulic power steering system for heavy vehicles consists of an analog steering mechanism and an electro-hydraulic power steering system that drives the analog steering mechanism to achieve steering;

[0047] The simulated steering mechanism comprises a bracket, a left trapezoidal arm 101 and a right trapezoidal arm 102 which are hingedly connected to both sides of the bracket respectively, and the top of the left trapezoidal arm and the right trapezoidal arm is connected by a tie rod 103, and the left trapezoidal arm and the right trapezoidal arm The outer sides are respectively connected with a left wheel 104 and a right whee...

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Abstract

The present invention provides an energy-saving electro-hydraulic power steering system and control method for heavy vehicles. It consists of servo proportional valve and angle sensor, and independently controls the valve opening of the first servo proportional valve and the second servo proportional valve through the controller, and then realizes the steering action. The two-chamber pressure and flow of the booster cylinder realize the decoupling of the oil inlet valve port and the oil outlet valve port, so as to realize the balance between the high-precision steering characteristics and high-efficiency and energy-saving characteristics of the electro-hydraulic power steering system. According to the error between the actual rotation angle fed back by the angle sensor and the given rotation angle, the controller controls the valve opening of the oil inlet valve, and sets the valve opening of the oil outlet valve to fully open, which can effectively reduce the throttling loss of the valve port , to further realize energy saving.

Description

technical field [0001] The invention relates to an energy-saving electro-hydraulic power steering system and a control method for heavy vehicles. Background technique [0002] Heavy-duty vehicles have played a vital role in the country's military heavy industry construction and various infrastructure constructions, such as super-heavy missile transport vehicles, multi-axle off-road vehicles, large beam transport vehicles, and all-terrain truck cranes. Steering technology is one of the core key technologies of heavy-duty vehicles, and it is the key technology that determines the driving flexibility, off-road performance and energy-saving performance of heavy-duty vehicles. In order to take into account the large load demand and flexible steering control of all-road driving, heavy-duty vehicles mostly use electro-hydraulic power steering systems. [0003] The structure of the electro-hydraulic power steering system is simple, and it can ensure good steering control precision ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04B62D5/06B62D5/08
CPCB62D5/04B62D5/062B62D5/08
Inventor 陈晖施承伟杜恒蔡梓扬贡青鸿
Owner FUZHOU UNIV