Modeling of spray combustion in Direct-injection diesel engine. Final report, January 1984-December 1987

Technical Report · Fri Jan 29 23:00:00 EST 1988

OSTI ID:6958468

Singh, H; Klett, D E

A mathematical model was developed to predict the penetration of a transient fuel spray, the temporal and spatial distribution of air-fuel mixture before the end of ignition delay and the subsequent pressure rise during combustion in a Direct-Injection Diesel Engine with and without swirl. The model accounts for the non-isothermal and non-isobaric character of processes during fuel injection resulting from continuous motion of the piston. The effects of various engine operating variables on spray were studied and graphically presented. The calculated spray penetration with and without crossflow of air is compared with the available experimental data of other researchers with good agreement. The model can predict the rate of combustible-mixture formation, the rate of heat release and cylinder pressure as a function of time in direct injection (DI) diesel engine. A single-cylinder D.I. research diesel engine was operated with N-hexadecane as the engine fuel to validate the mathematical model. However, a leaking head gasket rendered the data unusable, so comparisons between modeled and measured cylinder pressure-rise data are not included in the report.

• Research Organization: North Carolina Agricultural and Technical State Univ., Greensboro (USA)
• OSTI ID: 6958468
• Report Number(s): AD-A-193787/9/XAB
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
AIR
CHEMICAL REACTIONS
COMBUSTION
DATA
DIESEL ENGINES
DISPERSIONS
DOCUMENT TYPES
ENERGY
ENGINES
EXPERIMENTAL DATA
FLUIDS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUELS
GASES
HEAT
HEAT ENGINES
INFORMATION
INTERNAL COMBUSTION ENGINES
MATHEMATICAL MODELS
MIXTURES
NUMERICAL DATA
OXIDATION
PROGRESS REPORT
SPRAYS
THERMOCHEMICAL PROCESSES