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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; in revised form: 22 February 2011 / Accepted: 28 February 2011 / Published: 18 March 2011
Abstract: 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.
Keywords: diesel combustion; KIVA-3V; split injection; premixed charge compression ignition; emissions
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Cite This Article
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.
Peng Z, Liu B, Wang W, Lu L. CFD Investigation into Diesel PCCI Combustion with Optimized Fuel Injection. Energies. 2011; 4(3):517-531.
Peng, Zhijun; Liu, Bin; Wang, Weiji; Lu, Lipeng. 2011. "CFD Investigation into Diesel PCCI Combustion with Optimized Fuel Injection." Energies 4, no. 3: 517-531.