A study on combustion of high pressure fuel injection for direct injection diesel engine
Characteristics of diesel combustion with high pressure fuel injection were investigated, using a supercharged and charge air cooled single cylinder engine. Observation and analysis of combustion was performed using high speed schlieren photography at a definite low level NOx emission, while varying the parameters of both injection pressure and swirl ratio. Engine performance at a high injection pressure was evaluated in combination with shallow dish type combustion chamber and 8 hole nozzle. Two different intake ports (higher and lower swirl ratio) were used for the evaluation. Conventional injection system in combination with toroidal cavity and 4 hole nozzle was compared as a base line. It is generally said that quiescent combustion system is suitable for higher injection pressure configuration. According to the observed result of combustion photographs, however, higher swirl ratio shows better mixing than a lower swirl ratio, which was also confirmed by the performance test.
- OSTI ID:
- 6447657
- Report Number(s):
- CONF-880241-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
330102* -- Internal Combustion Engines-- Diesel
330701 -- Emission Control-- Nitrogen Oxides
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
CHALCOGENIDES
CHEMICAL REACTION KINETICS
COMBUSTION CONTROL
COMBUSTION KINETICS
COMPRESSORS
CONTROL
COOLING SYSTEMS
DIESEL ENGINES
EMISSION
ENERGY SYSTEMS
ENGINES
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
KINETICS
MONITORING
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PHOTOGRAPHY
POLLUTION ABATEMENT
REACTION KINETICS
SUPERCHARGERS
VORTEX FLOW