Internal combustion engine
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United States of America Patent
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Mar 5, 2019
Grant Date -
Sep 28, 2017
app pub date -
Mar 24, 2017
filing date -
Mar 28, 2016
priority date (Note) -
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Abstract
The control apparatus operates an engine water temperature adjustment apparatus so that the temperature of cooling water that passes through an engine head enters a first temperature region in a lean mode, and operates the engine water temperature adjustment apparatus so that the temperature of the cooling water enters a second temperature region that is lower than the first temperature region in a stoichiometric mode. When knocking is detected after switching is started from the lean mode to the stoichiometric mode, the control apparatus performs any one of a first operation to operate a variable valve apparatus so as to retard the closing timing of an intake valve, a second operation to operate an oil jet apparatus so as to increase an oil jet amount, and a third operation to operate an EGR apparatus so as to increase an EGR amount.
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