排气和扫气相位对小型二冲程汽油机排放等性能的影响  

Effects of Exhaust Opening Time and Transfer Opening Time to Small Two- stroke Gasoline Engine Emissions and Other Parameters

作　　者：李清砺 唐立春 李帅 

机构地区：[1]山东华盛农业药械有限责任公司

出　　处：《内燃机与配件》2015年第6期1-4,共4页Internal Combustion Engine & Parts

摘　　要：本文以一款市场常见排量52ml二冲程汽油机为例,研究该类小型二冲程汽油机通过改变排气相位角、扫气相位角,从而使原始排放(HC+NOx)由120g/kwh改进后降低到70g/k Wh,满足了国内第二阶段的排放法规要求,及引起的汽油机其他各项技术参数的规律性变化。This article is based on a 52ml displacement 2 -stroke gasoline engine that is common on market, in the process of improving this kind of small gasoline engine from meeting Chinese first stage emission standard to meet Chinese second bility, changing the tranfser opening time emissions from 120g/kWh to 70g/kWh. stage emission standard and engine parameters as well as dura- and exhaust opening time to decrease the brake -specific HC

关 键 词：小型二冲程汽油机 排气相位角 扫气相位角 排放 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]