郭金宝;李兵;吴国栋;王二龙
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1:山东滨州渤海活塞股份有限公司
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2:浙江吉奥汽车有限公司
摘要：随着柴油发动机向低排放、高功率方向发展,活塞承受的热负荷越来越高。为降低活塞的热负荷,现在的柴油发动机大多采用带内冷通道活塞。内冷通道改善了活塞的热负荷分布,但也为预测活塞温度分布带来了难度,采用计算流体力学(CFD)的方法可精确预测出活塞的温度分布。
关键词： 活塞;温度分布;计算流体力学;热传递系数;内冷通道
Abstract: Because the diesel engine
tends to develop along the route of low emission and high power,piston has to
bear higher heat load.In order to decrease heat load,the piston with inner
cooling gallery is adopted in diesel engines.The application of inner cooling
gallery may improve the heat load distribution,on the other hand,it makes it
difficult to predict piston temperature.The method of CFD can be used to
predict piston temperature distribution accurately.
Keywords: Piston;Temperature
Distribution;CFD;Heat Transfer Coefficient;Inner Cooling Gallery
参考文献：
[1]Y.Suzuki,et al.,Pistons for Automotive
Engines(inJapanese),SANKAIDO,Tokyo,1997,p.81.
[2]Baehr,H.D.-Stephan,K.:Heat
and MassTransfer.Springer-Verlag,Berlin,1998. |
