火花点火发动机冷启动和暖机过程未燃碳氢排放及控制  

Review on HC Emission and Control during Cold Start and Warming-up Processes of SI Engines

作　　者：梁小强[1] 刘圣华[1] 周龙保[1] 

机构地区：[1]西安交通大学汽车工程系,陕西西安710049

出　　处：《内燃机》2005年第3期36-39,共4页Internal Combustion Engines

基　　金：博士点基金(20030698002)

摘　　要：火花点火发动机冷启动和暖机瞬态过程中未燃碳氢的排放占整个测试循环总排放量的60%～80%,因而其控制越来越受到广泛的重视。从缸内燃烧过程组织和排气后处理两个方面,阐述近年来国内外火花点火发动机在降低该过程未燃碳氢排放方面的研究成果及存在的问题,并且探讨了寻求新的降低未燃碳氢的方法和技术。The amount of unburned hydrocarbon emission during cold start and warming up processes takes about 60%-80% of total unburned hydrocarbon emission in the test cycle, therefore, the emission characteristics and its control are widely studied. The control methods can be divided into two classes, i.e. combustion improvement and exhaust aftertreatment,which are reviewed in this paper. The problems in the study and the available solutions are discussed, as well as some new potential technologies.

关 键 词：冷启动 排放控制 未燃碳氢 火花点火发动机 

分 类 号：TK411.5[动力工程及工程热物理—动力机械及工程]