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http://dx.doi.org/10.3795/KSME-B.2012.36.2.131

Dependence of Nanoparticle and Combustion Characteristics of Gasoline Direct Injection Engines on Coolant Temperature  

Lee, Hyo-Keun (School of Mechanical Engineering, Korea Univ.)
Choi, Kwan-Hee (School of Mechanical Engineering, Korea Univ.)
Myung, Cha-Lee (School of Mechanical Engineering, Korea Univ.)
Park, Sim-Soo (School of Mechanical Engineering, Korea Univ.)
Park, Jong-Il (Hyundai Motor Company)
Han, Seung-Kook (Hyundai Motor Company)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.36, no.2, 2012 , pp. 131-136 More about this Journal
Abstract
This paper investigated the combustion and exhaust gas characteristics of gasoline direct injection engines for various cooling water temperature. The engine-out nanoparticle emission number and size distribution were measured by a DMS-500 equipped upstream of the catalyst. A CLD-400 and an HFR-400 were equipped at the exhaust port to analyze the cyclic NOx and total hydrocarbon emission characteristics. The results showed that the nanoparticle emission number greatly increased at low coolant temperatures and that the exhaust mainly contained particulate matter of 5.10 nm. THC also increased under low temperature conditions because of fuel film on the combustion chamber. NOx emissions decreased under high temperature conditions because of the increase in internal exhaust gas recirculation. In conclusion, an engine management system control strategy for driving coolant temperature up rapidly is needed to reduce not only THC and NOx but also nanoparticle emissions.
Keywords
GDI; DMS; HFR-400; CLD-400; THC; NOx; PM;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 1
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