Loading patent…
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsShoichiro Morinaka, Katsuaki Takahashi, Yoji Horiuchi
Estimating the term…
A switching mechanism switches the pressure stage of oil, which is fed from an oil pan to the individual parts of an internal combustion engine, between two stages, which are a low-pressure stage and a high-pressure stage. An electronic control device controls the action of the switching mechanism. The electronic control device determines that the liquid level of the oil is abnormal on the basis of the fact that the liquid level of the oil, which is detected by a liquid level sensor, in the oil pan becomes lower than a predetermined value. If the pressure stage of the oil is set at the low-pressure stage through the switching mechanism, the predetermined value is set at a higher value than that when the pressure stage is set at the high-pressure stage.
A control device for an internal combustion engine, the engine including a switching mechanism for switching a pressure stage of oil, which is fed from a storage portion to individual parts of the engine, between a plurality of stages, the control device comprising:
Dependencies are inferred from the claim text.