Gearbox whistling off-line detection method and its detection system

Abstract

The invention discloses an off-line gearbox whine detection method and system. The detection method comprises that an initial standard range value of gearbox noise to be detected is set; a first noisevalue of a first batch of gearboxes to be detected is detected; whether the first noise value exceeds the initial standard range value is determined; if NO, a first limit value of the first batch ofgearboxes is obtained; an Nth noise value of an Nth batch of gearboxes is detected, and N>=2; whether the Nth noise value exceeds an obtained an (N-1)th limit value is determined; if NO, an Nth limitvalue is obtained; a limit value curve is obtained according to the first limit value to the Nth limit value; a gearbox, to be detected off-line, corresponding to a limit value close to the upper limit value of the initial standard range value is identified from the limit value curve; and a vibration critical value of the gearbox to be detected off-line when the whole vehicle has whine noise is detected. The method and system can be used to evaluate the whine noise of the gearbox objectively.

Description

technical field [0001] The invention relates to the technical field of transmission testing, in particular to a detection method and a detection system for transmission whine off-line. Background technique [0002] Gearbox whine is a common noise problem in automobiles. When there is gearbox whine in the market, customers often request to replace the gearbox, which is expensive to deal with. The noise of the gearbox in the car is not only the problem of the gearbox itself, but it is greatly affected by the vehicle acoustic package. If the vehicle acoustic package is better, the requirements of the gearbox for howling can be relaxed, and the gear accuracy can be reduced. cost. It is an effective method to control the noise of the gearbox when the gearbox is off-line. However, how to set a reasonable limit value can not only ensure that there will be no howling noise in the car, but also prevent the limit value from being set too high. Strict, increasing manufacturing costs ...

AI Technical Summary

Problems solved by technology

It is an effective method to control the noise of the gearbox when the gearbox is off-line. However, how to set a reasonable limit value can not only ensure that there will be no howling noise in the car, but also prevent the limit value from being set too high. Strict, increasing manufacturing costs is the main problem currently facing

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