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Effects of In-Cylinder Flow and Stratified Mixture on HCCI Combustion in High Load
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 30, 2018 by SAE International in United States
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The purpose of this paper is to find a way to extend the high load limit of homogeneous charge compression ignition (HCCI) combustion. This paper presents the effect of in-cylinder flow and stratified mixture on HCCI combustion by experiments and three-dimensional computer fluid dynamics coupled with a detailed chemical reaction calculation. The first study was conducted using a rapid compression and expansion machine (RCEM) equipped with a flow generation plate to create in-cylinder turbulent flow and with a control unit of in-cylinder wall temperature to create in-cylinder temperature distribution. The study assesses the effect of the turbulent flow and the temperature distribution on HCCI combustion. In the second study, the numerical simulation of HCCI combustion was conducted using large eddy simulation coupled with a detailed chemical reaction calculation. The study analyzes the interaction between in-cylinder turbulent flow and mixture distribution and HCCI combustion. The result shows that turbulent flow effects a change in the distribution of chemical species which is a trigger of combustion initiation.
CitationYoshimura, K., Watanabe, S., Ogawa, K., Kuboyama, T. et al., "Effects of In-Cylinder Flow and Stratified Mixture on HCCI Combustion in High Load," SAE Technical Paper 2018-32-0016, 2018, https://doi.org/10.4271/2018-32-0016.
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