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In this paper, the effects of pilot injection strategies, including various pilot injection timings and masses, on the combustion and emission characteristics of gasoline compression ignition are investigated in a multi-cylinder heavy duty diesel engine with the aim of reducing peak pressure rise rate while improving thermal efficiency and exhaust emissions. The results show that the HRRPI, max (peak...
Premixed charge compression ignition (PCCI) combustion is capable of reducing nitrogen oxides (NO x ) and soot emissions simultaneously, while remaining high fuel efficiency. Whereas, PCCI combustion still faces the challenges of the control of ignition timing and the expansion of operating range. In this study, by coupling a multi-dimensional computational fluid dynamics (CFD) code and genetic...
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