Method for designing McPherson suspension

A suspension and equation technology, applied in calculation, special data processing applications, instruments, etc., can solve the problems of time-consuming modeling, heavy workload, etc., achieve the effect of low threshold and increase the speed of research and development

Active Publication Date: 2010-09-08
CHERY COMML VEHICLE ANHUI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the design stage of the car, the height of the roll center of the car must be known. The traditional design method is to solve the roll center height of the McPherson suspension through the drawing method. With the development of dynamic theory, the more popular

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  • Method for designing McPherson suspension
  • Method for designing McPherson suspension
  • Method for designing McPherson suspension

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Embodiment 1

[0017] The method for design MacPherson suspension of the present invention specifically comprises the following steps:

[0018] A: Establish a plane coordinate system representing the left, right and height directions of the vehicle, and obtain the coordinates of the hard point in the McPherson suspension in this coordinate system through measurement or calculation, such as figure 1 As shown, the hard point indicates the connection position of each component, including point 1 on the shock absorber, point 2 on the ground of the tire, point 3 outside the control arm and rear point 4 of the control arm, where point 1 on the shock absorber, point 2 on the control arm The coordinates of the outer point 3 of the arm and the rear point 4 of the control arm can be obtained through CAD software measurement or direct measurement. The calculation method of the tire contact point 2 is as follows: tire center point ordinate + tire radius * COS α = tire contact point ordinate Coordinates;...

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Abstract

The invention aims at providing a method for simply designing a McPherson suspension. The method comprises the following steps: firstly, establishing a coordinate system; then, obtaining hard point position parameters of connecting positions of each component in the McPherson suspension such as the shock absorber upper point, the tire grounding point, the control arm outer point and the control arm front point or back point and the like through measurement or calculation; carrying out calculation according to the parameters to obtain an equation of a main pin axial line and a control arm axial line; calculating the coordinates of an instantaneous rotation center through setting a first auxiliary line on the basis; and then, calculating the side inclination center height through setting a second auxiliary line. Thereby, the hard point positions of the connecting positions of each component in the McPherson suspension can be regulated according to the design requirements, and the side inclination center height of the McPherson suspension can be regulated. The method for designing the McPherson suspension of the invention has the characteristics of low threshold, convenience, accuracy and the like, is suitable for being used in the development work of the McPherson suspension, and can improve the developing speed.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to a method for designing a MacPherson suspension. Background technique [0002] At present, the front suspension of many cars adopts McPherson suspension. This suspension has the following advantages: 1. The unsprung mass is small, which is beneficial to improve the ride comfort of the car; 2. The lateral occupation position is small, which is convenient for the engine to lower the center of gravity. Improve the driving stability of the car; 3. It is easy to realize the steering of the driving wheel; 4. The cost performance is high. [0003] The height of the roll center is one of the important performance indicators of the automobile suspension system, which directly affects the body roll angle when the vehicle is turning. Reasonable matching of the front and rear roll center heights is conducive to ensuring the safety of the car. In the design stage ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 张德超刘红领张林波徐有忠
Owner CHERY COMML VEHICLE ANHUI
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