Method and apparatus for operating a spark-ignited direct fuel injection engine

A method and article of manufacture are provided to operate a spray-guided, spark-ignition, direct fuel injection engine, including injecting a first fuel pulse during a combustion cycle, and initiating spark ignition by energizing a spark igniter. A second fuel pulse is injected during the combusti...

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Main Authors Lippert, Andreas M, Otto, Ronald M, Parrish, Scott E, Solomon, Arun S, Upatnieks, Ansis, Zeng, Yangbing
Format Patent
LanguageEnglish
Published 03.11.2009
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Abstract A method and article of manufacture are provided to operate a spray-guided, spark-ignition, direct fuel injection engine, including injecting a first fuel pulse during a combustion cycle, and initiating spark ignition by energizing a spark igniter. A second fuel pulse is injected during the combustion cycle effective to form an ignitable fuel-air mixture proximal to the spark igniter during a period in time whereat the spark igniter is energized. A preferred elapsed time between an end of the first fuel pulse and start of the spark ignition is determined based upon engine load.
AbstractList A method and article of manufacture are provided to operate a spray-guided, spark-ignition, direct fuel injection engine, including injecting a first fuel pulse during a combustion cycle, and initiating spark ignition by energizing a spark igniter. A second fuel pulse is injected during the combustion cycle effective to form an ignitable fuel-air mixture proximal to the spark igniter during a period in time whereat the spark igniter is energized. A preferred elapsed time between an end of the first fuel pulse and start of the spark ignition is determined based upon engine load.
Author Solomon, Arun S
Upatnieks, Ansis
Otto, Ronald M
Parrish, Scott E
Lippert, Andreas M
Zeng, Yangbing
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Title Method and apparatus for operating a spark-ignited direct fuel injection engine
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