缸盖涡流比对柴油机性能的影响

杨海龙^1，2，辛欣²，耿磊^1，2，赵旭^1，2

1.内燃机可靠性国家重点实验室，山东 潍坊  261061;

2.潍柴动力股份有限公司，山东 潍坊  261061

摘要：为提高柴油机制造精度和生产一致性，基于缸盖涡流比设计标准及生产一致性控制方法，进行生产调查，研究缸盖涡流比生产一致性真实分布；通过仿真研究分析缸盖涡流比对柴油机性能的影响，并进行台架试验验证，确定涡流比的最优设计。结果表明：涡流比为1.1~1.3对NO_x比排放、483烟度比排放和燃油消耗率的影响均较小，可以保证发动机可靠性、性能和排放均满足要求。

关键词：涡流比；一致性；NO_x排放；483烟度；燃油消耗率

Effect of cylinder head swirl ratio on diesel engine performance

YANG Hailong^1，2, XIN Xin²,GENG Lei^1，2, ZHAO Xu^1，2

1.State Key Laboratory of Reliability of Internal Combustion Engine, Weifang 261061, China;

2.Weichai Power Co.,Ltd.，Weifang 261061, China

Abstract：In order to improve the manufacturing accuracy and production consistency of diesel engine, based on the design standard of cylinder head swirl ratio and production consistency control method, the production census is carried out to determine the true distribution of cylinder head swirl ratio production consistency. Through simulation calculation, the influence of different cylinder head swirl ratio on diesel engine performance is determined, and bench test is carried out to determine the optimal design of swirl ratio. The results show that when the swirl ratio is between 1.1 and 1.3, the impact on NO_x emissions, 483 smoke emissions, and fuel consumption rate is relatively small, which can ensure that the engine reliability, performance, and emissions meet the requirements.

Keywords: swirl ratio; conformity; NO_x emission;483 smoke;fuel consumption rate