Methods and systems for operating an adjustable pre-chamber
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United States of America Patent
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Aug 10, 2021
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app pub date -
Apr 1, 2020
filing date -
Apr 1, 2020
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Abstract
Methods and systems are provided for an engine having a pre-chamber ignition system. In one example, a method may include adjusting a valve coupled between a pre-chamber of an engine cylinder and a main chamber of the engine cylinder between a fully open position and a fully closed position based on whether pre-chamber ignition is desired or direct spark ignition is desired. In this way, the engine may be operated with direct spark ignition during conditions when pre-chamber combustion has reduced stability without including additional spark plugs and air injectors.
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