李志勇1,2，王春英1,2，刘旺1,2
1.内燃机可靠性国家重点试验室,山东潍坊2610613;2.潍柴动力股份有限公司发动机研究院，山东潍坊261061
摘要：针对某柴油机耐久试验过程中出现的多次漏气故障，结合仿真分析方法，系统分析缸盖垫片漏气故障产生的原因，提出改进进气侧气缸盖和气缸体结构模型、填充材料增大进气侧的刚度和优化缸盖螺栓拧紧工艺等改进措施。经1000 h全负荷耐久试验及3000次热冲击试验验证，改进后的柴油机未发现任何泄漏及密封带部位异常磨损情况，为今后的设计提供了参考依据。
关键词：气缸盖垫片；漏气；仿真；试验
Abstract:Onepiece cylinder head gasket is quite harsh working conditions,a diesel engine development appeared many times in the process of endurance test leakage fault. In this paper, the cylinder head gasket leakage fault are analyzed in detail, combined with the simulation analysis method, the system elaborated the cylinder head gasket leakage fault reasons, put forward the suggestions for improvement, and improvement scheme for the test, provides a reference for future design.
Keywords:cylinder head gasket; leakage; simulation analysis; test
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