Measuring method for positioning parameter of vehicle front wheel

Abstract

A method for measuring the positioning parameter of automobile front wheel includes using cross point of master pin and knuckle axis as point of origin to measure out and alpha for any three positions, measuring external angle of dip alpha at front wheel turnangles as delta o, measuring gamma at turnangle as delta o1 to right and measuring alpha at turnangle as beta o2 to left, substituting measured data to formula sin betao=*** and sin gamma=ay / (Cos*** to solve out internal angle of dip for master pin.

Description

technical field The invention relates to a method for measuring the alignment parameters of the front wheels of an automobile. Background technique With the development of the automobile industry and highways, the driving speed of automobiles is getting faster and faster, and the influence of its handling stability on driving safety is particularly important. The front wheel alignment parameters of the car have a great influence on its straight-line driving stability, light steering, reduced tire wear and reduced fuel consumption. Therefore, during the use of the car, its front wheel alignment parameters should always remain unchanged. However, people often find some faults caused by the misalignment of the front wheel alignment angle, such as heavy steering, front wheel swing, running deviation and abnormal tire wear. Therefore, it is necessary to use the front wheel alignment instrument to regularly detect the front wheel alignment parameters, so that problems can be ad...

AI Technical Summary

Problems solved by technology

The disadvantages of this measurement method: First, the starting point of measurement cannot be determined

Because when the x-axis is on this plane, the front wheel has a very small toe angle; secondly, it is difficult to determine the dead center

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