论文名称： Effect of combustion chamber deposits on hydrocarbon emissions in a spark lgnition engine
作者： Huang Zuohua， Guo Haitao， Zhou Longbao
来源出版物： Journal of Combustion Science and Technology
年卷期页： 1997,3(2):182-189
收录类型： 其他
论文简介： To understand the effect of deposits in combustion chamber on engine out hydrocarbon emissions, a single cylinder spark ignition test engine is used to accumulate the combustion deposits. The experiments are conducted on hydrocarbon emissions under various operating conditions in the presence of combustion chamber deposits. The effects of combustion chamber deposits on engine power and fuel efficiency are also analyzed. The experimental results show that there exists an equilibrium thickness of deposits in combustion chamber if the engine operates for a certain period of time, the engine out hydrocarbon emissions contributed by combustion chamber deposits decreases with the increasing of engine speed, the coolant temperature, and the retarding of spark advance angle. The hydrocarbon emissions in the presence of deposits in combustion chamber increases by about 20～30 percent than that without deposits on various operating conditions in the experiments. The study also shows that deposits in combustion chamber will give a little benefit to engine power output and fuel efficiency (1.1～1.6 percent increasing in power and 2.7～3.0 percent increasing in fuel efficiency), and this contribution is considered mainly by the effect of thermal insulation rather than the effect of compression ratio due to the presence of deposits in combustion chamber.
原文链接： Effect of combustion chamber deposits on hydrocarbon emissions in a spark lgnition engine