降低4G69M发动机进气歧管进气阻力的研究  

Study on Reducing Air Resistance of Intake Manifold in 4G69M Engine

作　　者：辛荣勤 成永君[1] 

机构地区：[1]沈阳航天三菱汽车发动机制造有限公司,辽宁沈阳110179

出　　处：《铸造技术》2013年第9期1250-1252,共3页Foundry Technology

摘　　要：分析了4G69M发动机进气歧管内壁表面质量对发动机功率的影响。试验证明：选用粒度为AFS65～75、i筛集中度超过90％，其中主筛超过35％的覆膜砂，加入8％～15％的RC-5激冷砂生产的4G69M发动机进气歧管具有良好的内表面质量。可提高发动机功率4．66％。The influence of the inner surface quality of intake manifold on engine power was theoretically analyzed. Experiment results indicate that the intake manifold with good surface quality can was produced using resin coated sand of average grain fineness of 65-75 when three sieve concentration is more than 90%, and main sieve concentration is more than 35% and with 8%-15% chill additive RC-5. And the power of engine can be increased by 4.66%.

关 键 词：进气歧管 内表面质量 粒度 激冷砂 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]