The Effect of In-Cylinder Flow and Mixture Distributions on Combustion Characteristics in a HCCI Engine Chiba University

Format:

Book

Conference/Event

Author/Creator:

Watanabe, Shōgo, author.

Contributor:

Kuboyama, Tatsuya

Moriyoshi, Yasuo

Yoshimura, Kei

Conference Name:

JSAE/SAE Small Engine Technologies Conference & Exhibition (2017-11-05 : Jakarta, Indonesia)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Tokyo, JAPAN Society of Automotive Engineers of Japan 2017

Summary:

It has been widely known that thermal and fuel stratifications of in-cylinder mixture are effective to reduce in-cylinder pressure rise rate during high load HCCI operations. In order to optimize a combustion chamber design and combustion control strategy for HCCI engines with wide operational range, it is important to know quantitatively the influence of the temperature and fuel concentration distributions on ignition and heat release characteristics. At the same time, it is important to know the influence of in-cylinder flow and turbulence on the temperature and fuel concentration distributions. In this study, a numerical simulation of HCCI combustion were conducted to investigate the effects of the in-cylinder flow and turbulence, and the distributions of temperature on ignition and combustion characteristics in HCCI combustion. As a result, the initial temperature distribution of the cylinder air-fuel mixture was found to be effective for slowing the combustion because the large distribution of the scale is not easily influenced by the mixing due to the flow. In addition, it was found that the combustion slows down when the temperature gradient is wide in the combustion region

Notes:

Vendor supplied data

Publisher Number:

2017-32-0061

Access Restriction:

Restricted for use by site license