关键词：汽车；燃油喷射泵；柱塞弹簧；多目标最优化；优化设计
摘 要：Fuzzy theory and multi-objective optimization technology were applied to design fuel injector pump plunger spring based on consideration on its force condition.The mathematical model for the multi-objective optimization design was built under the objective of the maximal fatigue safety coefficient,the minimal weight and height,with the design variable of wire diameter d,mean diameter D and working circle n.Then,the fuzzy solution of multi-objective optimization were use to solve the model.