In order to explore the problem of manual transmission gear whine, road test,hub test and transmission system bench test were carried out to analyze the whine problem in multiple directions. The experimental results show that when the standard is that the difference value between the noise level and the order slice is greater than 15 dB(A), the whine condition of each working condition can be judged, which is basically consistent with the subjective feeling;the half-anechoic chamber of the hub and the road test field can be used as a test site to analyze the whine problem of the transmission;it is feasible to complete all the gear meshing spots test at one time when performing the meshing spot test. By optimizing the bench test method, the same meshing spot result as the vehicle test can be obtained. The whine problem in the transmission studied in this paper is mainly caused by the misalignment of the gears of the second gear and the large transmission error. After the adjustment and modification scheme, the whine phenomenon is obviously improved. The above work has certain guiding significance for solving similar problems.
Automobile Science and Technology