Effects of fuel properties on diesel spray characteristics

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6373470

Callahan, T J; Ryan, III, T W; Dodge, L G; Schwalb, J A

Several diesel injection systems were selected for evaluating the effects of fuel properties on diesel spray characteristics. Fuel properties that were examined were viscosity and specific gravity. The selected injection systems were operated on nine test fuels covering a broad range of viscosity and specific gravity. High-speed movies were taken of the fuels being injected into a high-pressure environment. Penetration and cone angle data were reduced from the movies and used as a basis for fuel to fuel comparisons. In addition, drop size distribution data were obtained for one injection system operating on four fuels with different viscosities. Fuel viscosity was found to have an effect on spray tip penetration. For a pintle-type nozzle as fuel viscosity increased, the tip penetration rate decreased. Tip penetration rate from a pressure time injection system was proportional to the fuel viscosity, in that as viscosity increased, tip penetration increased. For a unit injector, viscosity effects on spray tip penetration were not significant.

• Research Organization: Southwest Research Institute, San Antonio, TX
• OSTI ID: 6373470
• Report Number(s): CONF-870204-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
DENSITY
DIESEL ENGINES
DIESEL FUELS
DROPLETS
ENGINES
FLUID MECHANICS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
HYDRAULICS
INTERNAL COMBUSTION ENGINES
MEASURING METHODS
MECHANICS
NOZZLES
OPERATION
PARTICLE SIZE
PARTICLES
PERFORMANCE
PETROLEUM PRODUCTS
PHOTOGRAPHY
PHYSICAL PROPERTIES
SIZE
SPRAYS
TIMING PROPERTIES
VISCOSITY