SYSTEMS AND METHODS FOR CYLINDER EXHAUST VALVE DIAGNOSTICS
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United States of America Patent
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Jul 11, 2019
app pub date -
Jan 5, 2018
filing date -
Jan 5, 2018
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Abstract
Methods and systems are provided for diagnosing degradation of an exhaust valve coupled to an engine cylinder. In one example, a method may include, routing compressed air from an electric booster into a cylinder with the intake valve of the cylinder open and the exhaust valve closed, and indicating degradation of the exhaust valve based on an exhaust airflow relative to a baseline airflow.
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