Evaluation of emissions and heat-release characteristics from a simulated low-heat-rejection diesel engine

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

OSTI ID:5033720

Henningsen, S

Tests were performed on a single-cylinder direct-injection (DI) research diesel engine to investigate the influence of elevated combustion-chamber temperature on combustion performance. The test program examined the low-heat-rejection (LHR) approach by removing the coolant but without employing heat-insulated parts. Heat-release characteristics calculated from pressure-time histories were correlated with measured exhaust emissions. It was found that increasing temperature level decreases the ignition delay and consequently decreases the fraction of total fuel that burns in the premixed-combustion phase. Exhaust hydrocarbon, NO/sub x/ and particulate emission were found generally to increase with increasing temperature. The premixed-combustion fraction is concluded not to be the main source of the increased emissions.

• OSTI ID: 5033720
• Report Number(s): CONF-8709177-
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
330701 -- Emission Control-- Nitrogen Oxides
330704 -- Emission Control-- Hydrocarbons
330705 -- Emission Control-- Particulates
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
CHALCOGENIDES
COMBUSTION CHAMBERS
COMBUSTION CONTROL
CONTROL
DIESEL ENGINES
EMISSION
ENGINES
EVALUATION
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
HEAT FLOW
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
LOW TEMPERATURE
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PERFORMANCE TESTING
SIMULATION
TESTING
WASTES