1994-10-01

Attitude Control of a Diesel Spray Under the Coanda Effect 941923

In this paper, a new concept of an attitude control of a diesel spray was proposed. The Coanda effect known in the fields of the fluidics was applied to control a penetrating direction of a diesel spray injected into a combustion chamber of a D.I. diesel engine. In general, a jet moving along a wall was deviated by the Coanda effect. So if the shape of a cavity crown of the combustion chamber would be suitably designed and a diesel spray behavior would be similar to a gaseous jet, the spray might penetrate along the cavity wall. Furthermore, the switching effect of the penetrating direction might appear with a piston movement. To establish this method for an attitude control of a diesel spray, behavior of a diesel spray that was affected by a fixed interference plate located near the spray axis was experimentally investigated.

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