关键词: Groan 噪音；力矩波动；台架试验；前期识别

Abstract: In order to recognize the potential Groan noise early and avoid the redevelopment of bench performance tests and other noise, vibration, harshness (NVH) tests, the mechanism of Groan noise is analyzed and used to investigate the relationship between Groan noise mechanism and torque vibration, and an early bench test method suitable for Groan noise is developed. Two different friction materials are selected, and according to the early bench test method formulated in this paper, the bench comparison and vehicle evaluation comparison carried out. The results show that the early identification method formulated in this paper is effective, and the bench results are highly consistent with the vehicle evaluation results. It is concluded that the Groan noise can be identified in advance by the method described in this article, thereby saving costs and time.

Key words: Groan noise; Torque vibration; Bench test; Early recognition