Fuel injection
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United States of America Patent
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-
May 14, 2002
Grant Date -
Jun 14, 2001
app pub date -
Mar 5, 1999
filing date -
Mar 5, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A stratified charge is formed in an engine by injecting fuel at an impingement surface adjacent an outlet of the injector. The injected fuel thereby forms a cloud shallowly penetrating the combustion chamber so as to float therein to reduce wall-wetting and subsequent soot formation. A substantially flat top piston urges the cloud upwardly during a compression stroke of the engine. The cloud remains substantially unmixed with the inducted air, thereby producing the stratified charge. The continued motion of the piston causes the cloud to move toward the spark plug for ignition.
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