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A Study on the Characteristics of Mixture Formation and Combustion in the Premixed Charge Compression Ignition Engine  

Kim, Hyung-Min (Graduate School, Hanyang University)
Ryu, Jea-Duk (Graduate School, Hanyang University)
Lee, Ki-Hyung (Department of Mechanical Engineering, Hanyang University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.14, no.3, 2006 , pp. 1-9 More about this Journal
Abstract
Recently, there has been an interest in premixed diesel engines as it has the potential of achieving a more homogeneous and leaner mixture close to TDC compared to conventional diesel engines. Because this concept reduced NOx and smoke emissions simultaneously. Early studies are shown that in a HCCI(Homogeneous Charge Compression Ignition) engine, the fuel injection timing and intake air temperature affect the mixture formation. The purpose of this study is to investigate characteristics of combustion and mixture formation according to injection timing and intake air temperature in a common rail direct injection type HCCI engine using an early injection method called the PCCI(Premixed Charge Compression Ignition). From this study, we found that the fuel injection timing and intake air temperature affect the mixture formation and in turn affects combustion in the PCCI engine.
Keywords
PCCI; Cool flame; Two-stage ignition; ROHR; IMEP;
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