Abstract: The effects of the construction and shape of combustion chamber
of the automotive D. I. Diesel engine on the movement of the air
flow in cylinder are analyzed. Three new type of combustion
chambers of the small-sized D. I. Diesel engine,
quadrangle-shaped, petal-shaped and quadrangle-shaped are
designed. The fluid states of the combustion chamber walls are
tested by the oil film method, a simple fluid visualization
technique. It is confirmed from the engine performance tests,
that the quadrangle-shaped combustion chamber has a satisfactory
effect on the improvement of combustion characteristics and
reduction in fuel consumption and density of exhaust of the
small-sized D. I. Diesel engine.
Key words: Direct
injection diesel engine Combustion chamber Small swirl
Combustion characteristic
Manuscript received on
February 1, 1997; revised manuscript March 11, 1997
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