A Study of a Gasoline-fueled HCCI Engine∼Mode Changes from SI Combustion to HCCI Combustion∼
Date Published: 2008-04-14
Paper Number:2008-01-0050
DOI: 10.4271/2008-01-0050
Citation:
Matsuda, T., Wada, H., Kono, T., Nakamura, T. et al., "A Study of a Gasoline-fueled HCCI Engine∼Mode Changes from SI Combustion to HCCI Combustion∼," SAE Technical Paper 2008-01-0050, 2008, doi:10.4271/2008-01-0050.
Author(s):
Tsuyoshi Matsuda - Nissan Motor Co., Ltd.
Hiroki Wada - Nissan Motor Co., Ltd.
Toshiya Kono - Nissan Motor Co., Ltd.
Takeshi Nakamura - Nissan Motor Co., Ltd.
Tomonori Urushihara - Nissan Motor Co., Ltd.
Abstract:
Since the stable operating region of a gasoline-fueled HCCI engine is limited to the part load condition, a mode change between SI and HCCI combustion is required, which poses an issue due to the difference in combustion characteristics. This report focuses on the combustion characteristics in the transitional range. The combustion mode in the transitional range is investigated by varying the internal EGR rate, intake air pressure, and spark advance timing in steady-state experiments. In this parametric study, stable SI-CI combustion is observed. This indicates that the combustion mode transition is possible without misfiring or knocking, regardless of the speed of variable valve mechanism which includes VVA, VVEL, VTEC, VVL and so on, though the response of intake air pressure still remains as a subject to be examined in the actual application.
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