关于某车型发动机悬置的优化设计  

The Optimization Design of a Engine Mounting

作　　者：杨武森 杨玉玲 覃臻 YANG Wu-sen;YANG Yu-ling;QIN Zhen(SAIC GM Wuling Automobile Co.,Ltd.,Liuzhou 545007,China)

机构地区：[1]上汽通用五菱汽车股份有限公司,柳州545007

出　　处：《内燃机与配件》2020年第4期22-24,共3页Internal Combustion Engine & Parts

摘　　要：橡胶悬置在设计开发时不仅需保证其在使用中受到复杂应力达到疲劳耐久性能的要求,还需考虑温度对悬置使用寿命的影响。某车型年度改款的新发动机的三元催化器与左侧发动机悬置距离较近,悬置隔振元件使用的就是橡胶材料,三元催化器表面高温辐射容易导致橡胶老化开裂。本文针对此发动机悬置结构进行自带隔热罩的设计优化,并通过道路试验结果验证悬置结构设计优化的正确性,可以降低悬置橡胶表面温度,避免悬置橡胶老化开裂的风险,延长发动机悬置的使用寿命。When designing and developing a rubber suspension, it not only must ensure that it can meet the requirements of fatigue durability under complex stress during use, but also need to consider the impact of temperature on the service life of the suspension. The ternary catalytic converter of the new engine of a certain model that is remodeled annually has a short distance from the left-side engine.The rubber isolation element uses the rubber material and high temperature radiation on the surface of the three-way catalyst easily leads to rubber aging and cracking. In this paper, the design of the self-contained heat shield for this engine suspension structure is optimized, and the correctness of the suspension structure design optimization is verified by road test results. It can reduce the surface temperature of the suspension rubber, avoid the risk of aging and cracking of the suspension rubber, and prolong the Engine mount life.

关 键 词：悬置 温度 隔热罩 优化设计 

分 类 号：U464.13[机械工程—车辆工程]