Prediction of in-cylinder flow and spray formation effects on combustion in direct injection diesel engines

Book · Tue Jan 01 00:00:00 EST 1985

OSTI ID:5475854

Kono, S; Nagao, A; Motooka, H

The study of the phenomena of in-cylinder flow, spray and combustion by measurement and calculation has been vigorously pursued, because thermal efficiency and emissions of the D.I. diesel engine are influenced by them. To investigate the effects of in-cylinder flow on spray and combustion, the D.I. diesel engine simulation model has been developed. This model is composed of in-cylinder flow, spray and combustion models. In the spray model, spray non-uniformity is considered, and physical and chemical processes are considered in the combustion model. The effects of swirl, number of nozzle holes, injection pressure and squish area on thermal efficiency and emissions have been investigated, and the existence of optimum values of these parameters against thermal efficiency have been predicted and these predictions have been verified by measurement.

• OSTI ID: 5475854
• Report Number(s): TP-850108
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
COMBUSTION KINETICS
FLOW MODELS
FUEL INJECTION SYSTEMS
CYLINDERS
EMISSION
EXHAUST GASES
NOZZLES
OPTIMIZATION
PRESSURE EFFECTS
SPRAYS
THERMAL EFFICIENCY
VORTEX FLOW
CHEMICAL REACTION KINETICS
EFFICIENCY
ENGINES
FLUID FLOW
FLUIDS
FUEL SYSTEMS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
KINETICS
MATHEMATICAL MODELS
REACTION KINETICS
WASTES
330102* - Internal Combustion Engines- Diesel