Stepped idle return for multiair equipped engines with high aeration
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United States of America Patent
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Sep 1, 2015
Grant Date -
Jun 19, 2014
app pub date -
Dec 14, 2012
filing date -
Dec 14, 2012
priority date (Note) -
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Abstract
A method and system for controlling the engine during a return to idle maneuver when the engine's oil is highly aerated. The system and method will implement a stepped return to idle maneuver when the engine oil has a predetermined amount of aeration. The predetermined amount of aeration is an amount that could cause an engine to stall due to valve lift loss if the engine speed were reduced to the idle speed in the conventional manner.
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