2190T天然气发动机进气和燃烧系统的改进研究.pdf

内燃机学报990202 内燃机学报 TRANSACTIONS OF CSICE 1999年 第17卷 第2期 vol.17No2. 1999 2190T天然气发动机进气和燃烧系统的改进研究* 赵奎翰　曲延涛　魏克宁　 王百海　余雷海　董联革　马千里　程　勇 摘要　介绍了通过改进进气系统和燃烧系统，提高2190T天然气发动机性能的研究结果。为了解决 2190T天然气发动机两缸工作不均匀的问题，研究成功了稳压进气管，从而有效地消除了两缸空燃 比和排气温度差异过大的缺陷。为提高整机性能，解决2190T天然气发动机燃烧速度低，后燃严重 和排气温度过高等问题，研究成功了新型两级点火燃烧系统，大大提高了燃烧速度，从而显著地 改善了发动机的动力性、燃料经济性和排放指标。新型两级点火燃烧系统，结构简单，工作可 靠，维修方便，便于推广应用。 关键词　天燃气发动机；两级点火燃烧系统；稳压进气管 A Study on the Improvement of Inlet and Combustion System of the 2190T Natural Gas Engine Zhao Kuihan Qu Yantao Wei Kening (National Engine Combusion Laboratory，Tianjin University) Wang Baihai Yu Leihai Dong Liange Ma Qianli (Shengli Power Mechanical Plant) Cheng Yong (Power Department，Shandong University of Technology） Abstract　This paper reports the results of a study on the 2190T natural gas engine by modifying the inlet and combustion system ．In order to solve the problem of ununiform work of the two cylinders ，a new pressure stabilized inlet duct was developed ．Experimental results show that the difference of the air fuel ratio between the two cylinders was decreased effectively ．In order to improve the engine performance ，a two stage ignition ，named TSI ，combustion system was developed by the authors ．By using the TSI combustion system ，the combustion rate of the 2190T natural gas engine was increased ， and the output ，thermal efficiency and exhaust emission of the engine were improved apparently ．The new TSI combustion system has a simple structure and works reliably ． Key words　Natural gas engines ；Two stage ingition combustion system ；Pressure stabilized inlet duct 引言 　　能源