冷却液温度对柴油机性能影响研究  

Study on Effect of Coolant Temperature on Diesel Performance

作　　者：胡君[1] 蒋习军[1] 朱红国[1] 魏厚敏[1] 黄德军[1] 

机构地区：[1]中国汽车工程研究院

出　　处：《汽车技术》2009年第1期45-48,共4页Automobile Technology

摘　　要：利用深度冷热冲击试验台控制冷却液温度,以某一废气涡轮增压中冷直喷式柴油机为对象,进行了冷却液温度对柴油机性能影响的测试。试验结果表明,柴油机冷却液温度对发动机燃油消耗量以及有效功率有着较大的影响;随着冷却液温度的逐渐升高,柴油机CO和HC的排放量都随之降低并趋于稳定;在低温状态下,冷却液温度对NOx的影响较为明显,在高温且当缸内温度达到平衡后,冷却液温度对NOx的影响比较微弱。Based On an exhaust-turbo charged intercooler DI diesel engine,the effects of coolant temperature on diesel performance are tested by using cold-warm impact test bench to control coolant temperature.Tbe results show that coolant temperature has large effects on engine fuel consumption and effective power;the emissions of CO and HC decrease and become more stable with the increase of coolant temperature;the effect on Nox is obvious in low temperature status,and the effect is small in high temperature status and when cylinder inner temperature achieves balance.

关 键 词：柴油机 冷却液温度 性能 排放 

分 类 号：U464.172[机械工程—车辆工程]