| 摘要 |
The present invention provides an engine oil circulation system comprising an oil temperature sensor installed in a lower part of an oil pan that detects temperature of oil stored in the oil pan; an oil pressure sensor that detects pressure of oil discharged from an oil pump; an engine state sensor that detects an engine speed and an engine load; an oil pressure relief valve that is installed in one side of the oil pump and bypasses oil to the oil pan when pressure of oil supplied from the oil pump is higher than a predetermined pressure, the predetermined pressure being a minimum pressure above which the engine operates properly; a solenoid valve that is installed in a bypass tube and controls oil bypass; and a solenoid valve controller that controls an operation of the solenoid valve by a predetermined control logic on the basis of data input from the above oil temperature, oil pressure and engine state sensors. It also provides an engine oil circulation control method using the above system comprising the steps of opening an idle speed actuator with a predetermined duty after an ignition switch is turned on, opening the solenoid valve, and maintaining the solenoid valve in an opened state.
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