Modeling of Spray-Swirl Interaction in DI Diesel Engine - Influence of Injection Characteristics

Format:

Conference/Event

Author/Creator:

Singal, S. K., author.

Conference Name:

1989 SAE International Off-Highway and Powerplant Congress and Exposition (1989-09-11 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1989

Summary:

A mathematical model based on turbulent gas jet theory was used to study spray-swirl interaction in direct injection diesel engine. Vectorial approach was used to predict the momentum change in two directions (i) along the spray centre-line and (ii) normal to the centre-line. Effect of changes in air density and swirl velocity during compression was accounted for. Effect of different injection parameters viz. nozzle size, injection rates, duration of injection, shape of injection rate curve, location of injector in the cylinder head and spray angle was studied on spray penetration, spread, air entrainment and momentum ratio of spray to air et cetera Initial rate of injection and mass averaged injection pressure play significant role in air-fuel mixing for spray injected from side of the cylinder, whereas the initial rate of injection dominates the mixing for central injection. Nozzle orifice size does affect fuel-air mixing but it is predominantly controlled by the injection pressure

Notes:

Vendor supplied data

Publisher Number:

891914

Access Restriction:

Restricted for use by site license