Spark ignition, early flame development and cyclic variation in I. C. engines

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

OSTI ID:6513627

Kalghatgi, G T

Combustion and pressure development in spark ignition engines are marked by cycle to cycle variations which are especially severe if the mixture is lean. The variations in indicated mean effective pressure (IMEP) that arise from this could be sufficiently severe to cause problems in certain engine operating regimes even in engines which run smoothly at steady operating conditions. Cyclic variations in IMEP could be effectively reduced at source by reducing cyclic variations in combustion. These are known to originate during the initial stage of combustion which can be influenced by the ignition process. Of the various enhanced ignition devices, variants of the spark ignition system seem to be of most practical interest for automobile applications in the immediate future.

• Research Organization: Shell Research Ltd., Thornton Research Centre
• OSTI ID: 6513627
• Report Number(s): CONF-870204-
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
AUTOMOBILES
COMBUSTION CONTROL
COMPRESSION RATIO
CONTROL
DOCUMENT TYPES
ELECTRIC DISCHARGES
ELECTRIC SPARKS
ENGINES
FLAMES
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
OPERATION
PRESSURE CONTROL
REVIEWS
SPARK IGNITION ENGINES
STABILITY
VARIATIONS
VEHICLES