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Energies 2011, 4(3), 517-531; doi:10.3390/en4030517

CFD Investigation into Diesel PCCI Combustion with Optimized Fuel Injection

School of Engineering and Design, University of Sussex, UK
School of Jet Propulsion, Beihang University, China
Author to whom correspondence should be addressed.
Received: 15 December 2010 / Revised: 22 February 2011 / Accepted: 28 February 2011 / Published: 18 March 2011
(This article belongs to the Special Issue Advancement in Combustion Sciences and Technology)
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A multi-pulse injection strategy for premixed charge compression ignition (PCCI) combustion was investigated in a four-valve, direct-injection diesel engine by a computational fluid dynamics (CFD) simulation using KIVA-3V code coupled with detailed chemistry. The effects of fuel splitting proportion, injection timing, spray angles, and injection velocity were examined. The mixing process and formation of soot and nitrogen oxide (NOx) emissions were investigated as the focus of the research. The results show that the fuel splitting proportion and the injection timing impacted the combustion and emissions significantly due to the considerable changes of the mixing process and fuel distribution in the cylinder. While the spray, inclusion angle and injection velocity at the injector exit, can be adjusted to improve mixing, combustion and emissions, appropriate injection timing and fuel splitting proportion must be jointly considered for optimum combustion performance. View Full-Text
Keywords: diesel combustion; KIVA-3V; split injection; premixed charge compression ignition; emissions diesel combustion; KIVA-3V; split injection; premixed charge compression ignition; emissions

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Peng, Z.; Liu, B.; Wang, W.; Lu, L. CFD Investigation into Diesel PCCI Combustion with Optimized Fuel Injection. Energies 2011, 4, 517-531.

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