A Visual Study of D.I. Diesel Combustion from the Under and Lateral Sides of an Engine University of Hiroshima

Format:

Conference/Event

Author/Creator:

Hiroyasu, Hiroyuki, author.

Conference Name:

1986 SAE International Off-Highway and Powerplant Congress and Exposition (1986-09-08 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1986

Summary:

A high-speed photographic study is presented illustrating the influence of engine variables such as an introduced air swirl, the number of nozzle holes and the piston cavity diameter, on the combustion process in a small direct-injection (D.I.) diesel engine. The engine was modified for optical access from the under and lateral sides of the combustion chamber. This modification enabled a three-dimensional analysis of the flame motion in the engine. The swirling velocity of a flame in a combustion chamber was highest in the piston cavity, and outside the piston cavity it became lower at the piston top and at the cylinder head in that order. The swirl ratio of the flame inside the cavity radius attenuated gradually with piston descent and approached the swirl ratio outside the cavity radius, which remained approximately constant during the expansion stroke. Engine performance was improved by retarding the attenuation of the swirl motion inside the cavity radius

Notes:

Vendor supplied data

Publisher Number:

861182

Access Restriction:

Restricted for use by site license