关键词: 汽车水泵；水泵水封；水泵异响；机械密封

Abstract: Based on the abnormal sound fault of automotive water pump seals, this paper discusses the aspects of product structure, possible causes of abnormal sound, and solutions, forming some reference content. The analysis methods used in this article include data collection, bench reproduction, structural and process improvement, and effect verification. Detailed analysis is conducted on the factors that may cause abnormal sounds, and ultimately, slip adhesion phenomenon is identified as the main cause of abnormal sounds. On this basis, a series of process optimizations are carried out and good results are achieved.

Key words: Automotive water pump; Water pump water seal; Water pump abnormal noise; Mechanical seal