Systems and methods for catalyst heating during cold-start with an active pre-chamber
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United States of America Patent
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Feb 22, 2022
Grant Date -
Aug 26, 2021
app pub date -
Feb 26, 2020
filing date -
Feb 26, 2020
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Abstract
Methods and systems are provided for operating a cylinder of an engine including a pre-chamber ignition system during a cold start condition. In one example, a method may include performing a post-injection in the cylinder, and then performing a pre-chamber combustion during an exhaust stroke of the cylinder. In this way, a temperature of a catalyst of the engine may be increased, which may decrease vehicle emissions during the cold start condition.
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