The research about thermal stratification effect on pressure rise rate in supercharged HCCI engine based on numerical analysis

O. Seok Kwon, Dong Won Jeong, Ock Taeck Lim, Norimasa Iida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The HCCI engine is a next generation engine, with high efficiency and low emissions. However a rate of pressure rise is a major limitation for high load range. Recently, we are able to reduce the rate of pressure rise using thermal stratification. Nevertheless, this was insufficient to produce high power. Without the higher equivalent ratio, one way to improve the power is to increase the intake boost pressure. It is suggested that the rate of pressure rise is reduced by thermal stratification and the power is increased by boost pressure at the same time. The objective of this work is to understand the characteristics of combustion, knock and emissions for using both thermal stratification and the boost pressure. The calculations are performed by CHEMKIN and modified SENKIN. As a result of increasing the boost pressure, a higher IMEP was attained while the rate of pressure rise increased only slightly in the HCCI with thermal stratification.

Original languageEnglish
Title of host publicationSAE Technical Papers
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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    Kwon, O. S., Jeong, D. W., Lim, O. T., & Iida, N. (2009). The research about thermal stratification effect on pressure rise rate in supercharged HCCI engine based on numerical analysis. In SAE Technical Papers