电控半直接喷射二冲程汽油机的研究与试验

罗滇生　 钱耀义　 于秀敏　 李云清　

摘　要：介绍了二冲程汽油机上采用的电控燃油喷射技术，包括燃油喷射系统的设计与喷油器的选择方法，以及喷油器安装位置的确定方法。研制了一套可以适用于二冲程汽油机的电控燃油喷射系统的开发装置。试验表明：喷油时刻对于降低燃油消耗率影响很大，小负荷时必须对喷油时刻进行精确控制；采用电控低压半直接喷射系统后，发动机在全负荷时的燃油消耗率下降显著，同时功率与扭矩也稍有增加。
关键词：二冲程汽油机；电控系统开发装置；半直接喷射系统
分类号：TK413．84　文献标识码：A
文章编号：1000-0909（2001）01-0051-04

Research and Test of the Electronic Fuel Semi-Direct Injected Two-Stroke Gasoline Engine

LUO Dian-sheng（ICE Engineering Department,Jilin University of Technol ogy,Changchun 130025）　
QIAN Yao-yi（ICE Engineering Department,Jilin University of Technol ogy,Changchun 130025）　
YU Xiu-min（ICE Engineering Department,Jilin University of Technol ogy,Changchun 130025）　
LI Yun-qing（ICE Engineering Department,Jilin University of Technol ogy,Changchun 130025）　

Abstract：The electronic injection technology for two stroke gasoline engine,which comprises the layout of electronic fuel injection system and the choosing method an d fixed position of fuel injector were introduced in this paper.The research device of electronic injection system for two-stroke engine was designed.The dynamometer test results showed that the injection timing had a large effect on the fuel consumption and it must be accurately and precisely controlled,when the engine was working at low load.As the semi-direct fuel injection system was used,the fuel consumption rate was obviously decreased at full load in comparison with the carburetor two-stroke engine,and the power and torque had a slight increasing.
Keywords：Two-stroke gasoline engine;Development device of electronic system;Semi-direct fuel injection system

参考文献：

［1］DIETHARD Plohberger.Development of a Fuel Injected Two-Stroke Gasoline Engine［C］.SAE Paper 880170.
［2］HUANG Hui.A Review of Technological Approaches for Reducing Exhaust Emissions from Two-Stroke Cycle Engine with In-Cylinder Injection System［C］.SAE Paper 951775.
［3］GREG Bell.Exhaust Emissions Sensitivities with Direct Injection on a 50 ml Scooter[C].SAE Paper 970365

收稿日期：2000年1月16日

修稿日期：2000年4月2日

出版日期：2001年1月1日