文章基本信息

标题：Combustion Control of a Small HCCI Engine Fuelled with DME using Hot and Cold EGR Gas
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作者：Tetsuo OHMURA ; Yoshihiko KANOTO ; Norimasa IIDA 等
期刊名称：Journal of Environment and Engineering
电子版ISSN：1880-988X
出版年度：2009
卷号：4
期号：1
页码：112-123
DOI：10.1299/jee.4.112
出版社：The Japan Society of Mechanical Engineers
摘要：One of the main challenges of HCCI engine research is developing a system to control the combustion phasing to achieve a stable operation. Though some HCCI combustion control systems have been suggested, they are heavy in weight and complex in mechanism. In this study, a simple combustion control system and an algorithm for a lightweight small-sized handy electrical generator HCCI engine fuelled with DME were developed and evaluated experimentally. In this system, the ratio of stoichiometric DME/air pre-mixture, Hot EGR gas and Cold EGR gas were adjusted by throttles. The experimental results showed that combustion phasing can be controlled through adjusting the mass-averaged in-cylinder gas temperature at intake valve closure timing by changing the ratio of Hot EGR gas and Cold EGR gas. Moreover, IMEP was PI (Proportional and Integral) feedback controlled by fuel flow rate, while the combustion phasing and equivalence ratio were PI feedback controlled by throttles. As a result, it is possible for these parameters to follow their set values.
关键词：Homogeneous Charge Compression Ignition Engine;HCCI;DME;EGR;Cyclic Variability;Rebreathing;Ignition Timing