内燃机气道稳流试验的影响因素分析及其控制规格设定  

The Influence Factors of Internal Combustion Engine Airway Steady Flow Test Analysis and Control Specifications Set

作　　者：俞黄航 夏承睿 吴勤 陈远超 YU Huang-hang;XIA Cheng-rui;WU Qin;CHEN Yuan-chao(GAC Motor Co.,Ltd.,Guangzhou 511434,China)

机构地区：[1]广汽乘用车有限公司,广州511434

出　　处：《内燃机与配件》2020年第20期86-88,共3页Internal Combustion Engine & Parts

摘　　要：气道稳流试验是目前众多内燃机进行性能确认的重要试验之一,气道性能(涡流强度、流量系数)对内燃机的动力性、经济性和排放有重要影响。由于其试验主体对象为内燃机汽缸盖部分,其成型以及加工工艺复杂,同时涉及的各种精度要求高,导致其在内燃机投产初期,稳流试验结果难以达到设计要求或原型机规格。通过对一系列车用发动机气道稳流试验结果进行研究,分析了汽缸盖铸造毛坯规格与其加工规格,对试验结果的影响机理,并总结了各阶段工艺规格控制的公差范围。The steady flow test is one of the most important tests to confirm the performance of internal combustion engine.The performance of intake port(swirl strength,flow coefficient)has an important impact on the power performance,economy and emission of internal combustion engine.Because the main test object is the cylinder head of internal combustion engine,its forming and processing technology is complex,and the various precision requirements involved are high,so it is difficult for the steady flow test results to meet the design requirements or prototype specifications in the early stage of internal combustion engine production.Through the research on the test results of steady flow in the air passage,the influence mechanism of casting blank specification and processing specification on the test results is analyzed,and the tolerance range of process specification control in each stage is summarized.

关 键 词：汽缸盖 气道稳流试验 毛坯与加工的精度 

分 类 号：TK407[动力工程及工程热物理—动力机械及工程]