某四缸自然吸气发动机改三缸增压发动机的水套优化

Cooling Water Jacket Design Optimization of a Three-Cylinder Turbo-charged Gasoline Engine which changed from a Four-Cylinder NA Gasoline Engine

介绍了某四缸自然吸气发动机改三缸增压发动机的水套优化过程。经过CFD模拟分析,并优化气缸垫水孔布置,得到了优化方案的速度场分布。与优化前比较,排气侧、火花塞孔周围以及缸体水套下部的水流速度有明显提高,适应了三缸增压发动机的高功率带来的冷却加强的要求。

The cooling water jacket design optimization for a three - cylinder turbo - charged gasoline engine which changed from a four- cylinder NA gasoline engine was described. Through the CFD software was utilized and the gasket holes were optimized, we have got the distribution of cooling water velocity of the three - cylinder engine. Compared with the four - cylinder engine, cooling water velocity of the area around the exhaust part, the spark plug and the water jacket of the block cylinder was increased significantly, and this can supplied for the high power which the three - cylinder turbo - charged gasoline engine needed.