This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Interactions of Direct-Injection Fuel Sprays With In-Cylinder Air Motions
Published January 01, 1980 by Verlag Des Verein Deutscher Ingenieure GmbH in Germany
One of the basic problems in developing a direct-injection, stratified-charge (DISC) engine is the control of the fuel-air mixture distribution within the combustion chamber. For a "lean-cloud" DISC engine, the design objective is to obtain a lean but combustible region of fuel-air mixture that is surrounded by air at all but the full-load operating point. Thus, the degree of control that is required in an operating DISC engine is more than simply obtaining a specified overall mixture strength. The mixture cloud must also be accurately positioned in the cylinder over a wide range of engine speeds and loads, which means that the cloud of combustible mixture must be formed at the proper time for each operating condition.