Characteristics of diesel engines converted to spark ignition operation fueled with natural gas

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6487332

Raine, R R; Stephenson, J; Elder, S T

This paper reports work which is part of continuing research into the use of natural gas as an alternative fuel for automotive engines. Much work has previously been reported on the use of natural gas in small spark ignition engines and the optimisation of these engines. Since a large potential use of natural gas is in heavy transport engines and since few large spark ignition engines suitable for gaseous fuel are available from manufacturers, there is a need to investigate the conversion of existing diesel engines to spark ignition operation. Two naturally aspirated diesel engines were characterised in the diesel mode to determine power, fuel consumption, peak combustion pressure, exhaust gas temperature and selected emissions characteristics over the engine speed and load range. After conversion to spark ignition operation these characteristics were again determined. The effects of various engine and tune parameters on performance were evaluated. The principal parameters considered were compression ratio, spark timing and air-fuel ratio.

• OSTI ID: 6487332
• Report Number(s): CONF-880241-
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
330102 -- Internal Combustion Engines-- Diesel
330800 -- Emission Control-- Alternative Fuels
COMPRESSION
DESIGN
DIESEL ENGINES
ENERGY SOURCES
ENGINES
FLUIDS
FOSSIL FUELS
FUEL ECONOMY
FUEL GAS
FUEL SUBSTITUTION
FUELS
GAS FUELS
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MODIFICATIONS
NATURAL GAS
OPERATION
SPARK IGNITION ENGINES