CRANKCASE VENTILATION SYSTEM AND DIAGNOSTIC METHOD
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United States of America Patent
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Dec 22, 2020
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Dec 24, 2020
app pub date -
Jun 24, 2019
filing date -
Jun 24, 2019
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Abstract
Methods and systems are provided for diagnosing a positive crankcase ventilation (PCV) system. In one example, a PCV system diagnostic method is provided that includes a determining a fault condition in a positive crankcase ventilation (PCV) system by comparing a pressure sampled from a pressure sensor positioned on a clean side of an oil separator coupled to a crankcase with a modeled pressure representing an expected pressure on the clean side of the oil separator.
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