Accession Number : ADA192280

Title :   Pulsed Spray Structure and Atomisation Techniques.

Descriptive Note : Final rept. Nov 83-Aug 87,

Corporate Author : UNIVERSITY OF MANCHESTER INST OF SCIENCE AND TECHNOLOGY (ENGLAND) DEPT OF MEC HANICAL ENGINEERING

Personal Author(s) : Yule, A J

PDF Url : ADA192280

Report Date : Aug 1987

Pagination or Media Count : 31

Abstract : The process of atomisation from diesel injectors is found to persist for a significant proportion of the spray length before impaction on the cylinder wall. Both aerodynamic shear and cavitation appear to be of importance for the liquid jet breakdown. In addition cyclic variations are found in the atomisation and penetration of sprays. The transient nature of the spray initial conditions can cause pile up and coagulation of droplets at the leading edge of the spray pulse for certain cases. Improved modeling of diesel injection requires recognition of these phenomena and this is supported by both modeling and experimental data which have been obtained under realistic engine conditions in a specially developed rig. Keywords: Diesel engines, Sprays, Combustion, Fuel injection.

Descriptors :   *COMBUSTION, *DIESEL ENGINES, *FUEL INJECTION, *SPRAYS, AERODYNAMICS, CAVITATION, COAGULATION, CYLINDRICAL BODIES, DROPS, ENGINES, EXPERIMENTAL DATA, INJECTION, INJECTORS, LEADING EDGES, LENGTH, MODELS, PENETRATION, PULSES, SHEAR PROPERTIES, WALLS

Subject Categories : Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE