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http://dx.doi.org/10.3795/KSME-B.2009.33.4.248

Effect of the Boost Pressure on Thermal Stratification on HCCI Engine Using Multi-Zone Modeling  

Kwon, O-Seok (울산대학교 기계자동차공학부)
Lim, Ock-Taeck (울산대학교 기계자동차공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.33, no.4, 2009 , pp. 248-254 More about this Journal
Abstract
The HCCI engine is a next generation engine, with high efficiency and low emissions. The engine may be an alternative to SI and DI engines; however, a pressure rise rate is a major limitation for high load range and power reduction. Recently, we were able to reduce the pressure rise rate using thermal stratification. Nevertheless, this was insufficient to produce high power. In this study, the reduction of the pressure rise rate using thermal stratification was confirmed and the HCCI engine power was increased using the boost pressure. The rate and engine power were produced by CHEMKIN and modified SENKIN. As a result of increasing the boost pressure, a higher IMEP was attained while the pressure rise rate increased only slightly in the HCCI with thermal stratification.
Keywords
HCCI; Pressure-rise Rate; Knocking; IMEP; Ringing Intensity; Thermal Stratification; DME; Multi-Zone Model; Single-Zone Mode;
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