增压柴油机进气压力波动规律的试验研究  

Experimental Study on Fluctuation of Intake Pressure in Turbocharged Diesel Engine

作　　者：杜巍[1] 刘福水[1] 李志杰[1] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081

出　　处：《内燃机工程》2008年第3期37-40,共4页Chinese Internal Combustion Engine Engineering

基　　金：国家部委预研项目(40402020104)

摘　　要：利用Kistler公司的瞬态压力传感器和Dewetron公司的燃烧分析仪,在某V型8缸增压柴油机上,测量了第1缸进气道入口进气压力在不同转速、不同负荷下的波动状况,对压力波动曲线进行了数据处理、对比和分析。结果表明:在相同的转速下,不同负荷时,进气压力波动的规律相近,负荷越大,进气压力的平均值越大,进气压力的波动范围也越大,但是波动强度很接近,变化不大;对于不同的转速,进气压力的波动规律明显不一样,随着转速的变化,压力最大值对应的曲轴转角不同,波动强度也是随转速波动变化的。On a V type eight-cylinder turbocharged diesel engine, the fluctuation of intake pressure at the inlet port of one cylinder under the conditions of different engine speeds and loads was measured by using of Kistler instantaneous pressure sensor and Dewetron the combustion analyzer. These curves of pressure fluctuation were processed, compared and analyzed. The results indicate that fluctuation history of intake pressure are similar under the conditions of the same speed and different loads. The higher the load is, the larger the mean value of intake pressure is, the bigger the fluctuant range of intake pressure is. But, the in- tensity of the pressure fluctuation was similar. At different speed, the fluctuant history of intake pressure is different. At different engine speed, the crank angle corresponding to max pressure is different, and at the same time, the intensity of intake pressure fluctuation varies with engine speed fluctuation.

关 键 词：内燃机 增压柴油机 进气压力 瞬态测量 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]