FSC赛车发动机进气系统设计.pdfVIP

中国内燃机学会燃烧节能净化分会2014年学术年会 CSICE2014-076 FSC 赛车发动机进气系统设计 庞圣桐, 曾东建 , 付凯 （西华大学交通与汽车工程学院，四川成都，610039） 摘要：基于FSC 比赛规则，对LD450 单缸机进气系统进行设计，以增加发动机的充气效率并提高发动机的 动力性。应用GT-POWER 软件对发动机进行模拟仿真，以确定进气系统设计方案；在采用该方案情况下，仿 真分析进气歧管长度和稳压腔容积对发动机动力性的影响，以确定相应参数；再通过CFX 软件对进气系统 进行三维流体模拟分析，得出了进气系统稳压腔收缩角度对气流运动的影响。最终得出进气系统的设计参 数。仿真结果表明：所设计的进气系统具有较大的充气效率，并满足对发动机动力性的要求。 关键词：进气系统，设计，仿真计算 The Design of Air Intake System of FSC Racing Engine PANG Sheng-tong, ZENG Dong-jian, FU Kai (School of Transportation and Automotive Engineering , Xihua University, Chengdu 610039 China) Abstract: Based on the rules of FSC, air intake system of LD450 single-cylinder engine was designed, to increase the charging efficiency and improve the dynamic performance of engine. To determine the program of air intake system by using GT - POWER software simulation; And then ,by using this scheme , voltage stabilizing cavity and the intake pipes of air intake system were simulated to get the influence of power performance of the engine by that and determine the basic structural parameters of air intake system; the air intake system analysis was carried out by CFX software 3-D fluid simulation. The airflow movement was influenced by the shrinking angle of voltage stabilizing cavity. Finally it was concluded that the design of the air intake system parameters. The simulation results showed that the design of the air intake system had larger charging efficiency and was satisfied with the requirements of power performance of the engine . Keywords: air intake system; design; simulation 中国大学生方程式汽车大赛(简称 1 理论分析 “FSC”)是一项由高等院校汽车专业或汽车 一般自然吸气发动机，在进气冲程，当 相关专业的在校学生组队参加的汽车设计 进气门急速打开时，由于活塞下行产生真空 [1] ，比赛分为静态陈述和动态测 吸力