关键词: 无级变速器, NVH, 噪声

Abstract: The interior noise of a CVT passenger car under full throttle acceleration of 100 km was taken as the research object，and a subjective evaluation test was conducted using the level scoring method. During the acceleration process of the vehicle from 2 000 to 3 000 r/min， there was high noise near the driver′s ears，poor subjective perception of sound quality，and a poor sense of integration between the driver and the vehicle. Adjusting the gear-shifting strategy for optimization reduced the peak noise near the driver′s ear from 89. 7 dB（A）to 67. 0 dB（A）and the subjective evaluation of the interior noise was increased from 6 points to 8 points，effectively improving the sense of integration between the driver and the vehicle.

Key words: continuously variable transmission（CVT）, NVH, noise