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International Journal of Automotive Technology > Volume 13(1); 2012 > Article
International Journal of Automotive Technology 2012;13(1): 9-22.
EXHAUST NANOPARTICLE EMISSIONS FROM INTERNAL COMBUSTION ENGINES: A REVIEW
C. L. MYUNG, S. PARK
Korea University
ABSTRACT
This paper reviews the particle emissions formed during the combustion process in spark ignition and diesel engine. Proposed legislation in Europe and California will impose a particle number requirement for GDI (gasoline direct injection) vehicles and will introduce the Euro 6 and LEV-III emission standards. More careful optimization for reducing particulate emission on engine hardware, fuel system, and control strategy to reduce particulate emissions will be required during cold start and warm-up phases. Because The diesel combustion inherently produces significant amounts of PM as a result of incomplete combustion around individual fuel droplets in the combustion zone, much attention has been paid to reducing particle emissions through electronic engine control, high pressure injection systems, combustion chamber design, and exhaust after-treatment technologies. In this paper, recent research and development trends to reduce the particle emissions from internal combustion engines are summarized, with a focus on PMP activity in EU, CARB and SAE papers and including both state-of-the-art light-duty vehicles and heavy-duty engines.
Key Words: Particulate matter, Particle number, Gasoline direct injection, Particulate filter, Low carbon fuels
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