Control device of internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTadashi Toda
Life of this patent
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Abstract
An upper level sensor or the like is used to detect an amount of lubricant in an oil pan of an engine. When the amount of lubricant exceeds a prescribed value (step ST1), that is, when lubrication of a sliding portion such as a bearing is insufficient due to dilution of the lubricant with fuel, control for lowering engine output such as control for lowering a maximum combustion pressure (step ST3) is carried out, so that combustion load applied to the sliding portion such as a bearing is suppressed when the maximum combustion pressure is attained and seizure of a connecting rod bearing or the like is prevented.
Claims4
A control device of an internal combustion engine, controlling an operation state of the internal combustion engine in which a lubricant circulates through each sliding portion, comprising:
- lubricant amount detection means for detecting an amount of the oil to fuel ratio of said lubricant;
- wherein
- when an amount of the dilution of the lubricant exceeds a prescribed value, said control device controlling the operational state of said internal combustion engine will lower the output of the engine.
Dependencies are inferred from the claim text.