Electrically controlled automatic engine oil replenishing system for engine and engine oil replenishing method

The invention provides an electrically controlled automatic engine oil replenishing system for an engine. The electrically controlled automatic engine oil replenishing system comprises an oil pan, anelectronic controller, a liquid level sensor, an electromagnetic valve and an oil replenishing kettle. The oil replenishing kettle is connected with the oil pan; the electromagnetic valve is arrangedat an oil outlet of the oil replenishing kettle; the liquid level sensor is arranged in the oil pan and is used for sensing an engine oil level in the oil pan and transmitting the sensed oil level information to the electronic controller; the electronic controller is used for calculating the required oil replenishing amount information according to a difference value between the liquid level information transmitted by the liquid level sensor and the preset liquid level information, and sending an electromagnetic valve control signal to the electromagnetic valve based on the oil replenishment amount information; and the