关键词: 悬置系统, 螺栓连接, 可靠性, 设计流程

Abstract: The powertrain mounting system plays a role in supporting the powertrain on the vehicle, and its reliability has a self-evident impact on the driving safety. The reliability of bolted joints in the mounting system is an important part of the overall reliability of the system. How to avoid the failure of bolted joints is of great significance to improve the reliability of the powertrain mounting system. Starting from the general principle of bolted joints, this paper analyzes the characteristics of bolted joints in the mounting system, and introduces the design requirements and key points of bolted joints in the powertrain mounting system from the number and location of bolts, the selection of bolt specifications, the verification of surface pressure and engagement length of the internal thread, and the determination of tightening torque, forming a relatively complete design process.

Key words: Powertrain mounting system, Bolted joints, Reliability, Design process