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Position: Home > Articles > Measurement and Analysis of Fuel Injection Characteristics of a Direct Injection Diesel Engine Transactions of the Chinese Society for Agricultural Machinery 2004,35 (3) 37-40

直喷式柴油机喷油特性的测试分析

作  者:
乔信起;宋永臣;颜淑霞;高希彦;陈家骅;黄震
单  位:
大连理工大学动力工程系;上海交通大学人事处;上海交通大学机械与动力工程学院
关键词:
直接喷射柴油机;喷油特性;喷油率;测试
摘  要:
为分析柴油机的燃烧过程和性能 ,在喷油泵试验台上用 W.Bosch长管法研究了喷油过程。介绍了试验装置和原理 ,分析了测试精度。试验结果表明 :喷油管内气泡产生与压力波尾部形状有关 ;长管内残余压力很低 ,燃油声速接近理论声速 ;喷油率图近似于梯形 ,燃油喷射呈“先急后缓”的特征 ;喷油压力、喷油始点、喷油持续角和喷油率均取决于柴油机转速和负荷。
译  名:
Measurement and Analysis of Fuel Injection Characteristics of a Direct Injection Diesel Engine
作  者:
Qiao Xinqi Yan Shuxia Huang Zhen(Shanghai Jiaotong University )Song Yongchen Gao Xiyan Chen Jiahua(Dalian University of Technology )
关键词:
Direct injection diesel engines,Fuel injection characteristics,Injection rate,Measurement
摘  要:
In order to analyze the combustion process and performance of a diesel engine,the fuel injection process was investigated by using W.Bosch long-tube method on an injection pump test stand. The measuring apparatus and the measuring principle and accuracy were presented. The experimental results show that the bubble emergence in high-pressure line relates to the tail configuration of the pressure wave,the residual long-tube pressure is very low,and the sound speed in the tube approaches the theoretical value. The injection rate pattern approximates a trapezoid with a steep front lateral side and a gentle back one. The injection pressure,timing,duration and rate depend on the engine speed and load.

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