Method and apparatus for controlling operation of an internal combustion engine
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United States of America Patent
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May 15, 2018
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N/A
app pub date -
Aug 21, 2015
filing date -
Sep 8, 2014
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Abstract
An internal combustion engine includes a plasma ignition system having an in-cylinder dielectric barrier-discharge igniter, and a direct-injection fuel injector having an in-cylinder fuel nozzle. The fuel nozzle protrudes into the combustion chamber proximal to the igniter. A controller operatively connects to the internal combustion engine, the plasma ignition system and the fuel injection system. The controller controls the internal combustion engine at an air/fuel ratio that is lean of stoichiometry. The fuel injector injects a first fuel pulse prior to activation of the igniter, and then the igniter initiates a plasma energy pulse. The fuel injector is controlled to inject a second fuel pulse during the plasma energy pulse.
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