Photographic and Three Dimensional Numerical Studies of Diesel Soot Formation Process Toyota Central Research and Development Laboratories, Incorporated

Format:

Conference/Event

Author/Creator:

Nakakita, Kiyomi, author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1990-10-22 : Tulsa, Oklahoma, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1990

Summary:

Soot formation process was examined by high speed photographs, using a single cumbustion diesel engine with a transparent swirl chamber. Fuel-air mixture and flames, and soot clouds were visualized by the schlieren method and the back-illuminated method, respectively. A three dimensional simulation program with soot formation and oxidation models was developed to clarify diesel soot formation processes. The models consist of several models previously proposed and partly improved in this study. Good agreement was obtained between calculated and experimental results. The following points were clarified through observation and numerical studies: (1) The main soot area is considerably smaller than luminous flame area, especially in the initial soot formation process. (2) The main soot cloud first appears in the tip region of fuel-air mixture, downstream of ignition position a few submilliseconds after the ignition. It is the soot carried down from the ignition position by a gas flow. (3) Temperature is more influential in soot formation, rather than fuel vapor concentration

Notes:

Vendor supplied data

Publisher Number:

902081

Access Restriction:

Restricted for use by site license