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Electric power steering system of large commercial vehicle and control method thereof

A technology of electric power steering and electric steering, which is applied in the direction of electric steering mechanism, power steering mechanism, steering mechanism, etc. It can solve the problems of inability to fully meet the steering function requirements of assisted driving or automatic driving, difficulties in oil circuit layout and installation, and high maintenance costs. problem, to achieve the effect of meeting the steering function requirements, low cost, and a small number of parts

Pending Publication Date: 2021-01-22
WUHU DEFU STEERING SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing new energy passenger car steering system is basically a hydraulic power steering system or an electrohydraulic power steering system. The oil circuit layout and installation of these two steering systems are difficult, and the later maintenance costs are high, because the use of hydraulic oil will cause certain environmental problems. Pollution
In addition, these two hydraulic steering systems cannot fully meet the steering function requirements of assisted driving or automatic driving

Method used

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  • Electric power steering system of large commercial vehicle and control method thereof
  • Electric power steering system of large commercial vehicle and control method thereof
  • Electric power steering system of large commercial vehicle and control method thereof

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Embodiment Construction

[0032] The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.

[0033] It should be noted that in the following embodiments, the "first" and "second" do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are only for Easy to describe.

[0034] Such as Figure 1 to Figure 10 As shown, the present invention provides a large-scale commercial vehicle electric power steering system, including a steering wheel 1, a steering column 2, a steering drive shaft 3, a steering knuckle arm 6, and a telescopic electric power steering device 5, and the telescopic electric power steering device 5 includes a ...

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Abstract

The invention discloses an electric power steering system of a large commercial vehicle. The system comprises a steering transmission shaft, a steering knuckle arm, a telescopic electric power steering device and a steering electronic control unit. The telescopic electric power steering device comprises an input shaft connected with the steering transmission shaft, a large steering gear connectedwith the input shaft, a small steering gear meshed with the large steering gear, a power-assisted motor, a small power-assisted gear connected with the power-assisted motor, a large power-assisted gear meshed with the small power-assisted gear and coaxially connected with the small steering gear, a ball screw mechanism connected with the large power-assisted gear, and a steering outer pull rod connected with the ball screw mechanism and the steering knuckle arm. The electric power steering system of the large commercial vehicle is high in integration level and convenient to arrange, and no complex oil ways and oil way accessories need to be assembled; and the steering function requirements of auxiliary driving and automatic driving can be met. The invention further discloses a control method of the electric power steering system of the large commercial vehicle.

Description

technical field [0001] The invention belongs to the technical field of vehicle steering systems, in particular, the invention relates to a large commercial vehicle electric power steering system and a control method thereof. Background technique [0002] The electric power steering system for new energy buses is the development direction of pure electric, hydrogen energy and other new energy urban public transport and highway bus steering systems. Hold function, line change assist function, etc. The electric power steering system for new energy buses can be applied to new energy urban buses and road buses whose steering single-axis load is not greater than 7500kgf. [0003] The existing new energy passenger car steering system is basically a hydraulic power steering system or an electrohydraulic power steering system. The oil circuit layout and installation of these two steering systems are difficult, and the later maintenance costs are high, because the use of hydraulic oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D3/08B62D3/12
CPCB62D5/0421B62D5/0463B62D3/08B62D3/12
Inventor 王静李连祥钟玲玲袁鲁平向坤陈顺
Owner WUHU DEFU STEERING SYST
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