System for controlling automatic adding and discharging of engine oil

The utility model discloses a system for controlling automatic adding and discharging of engine oil. The system comprises an oil pan, a two-way oil delivery pump, a waste oil tank, an engine oil tank, a three-position three-way electromagnetic valve and a control device. An opening is formed in the bottom of the oil pan, an oil head is installed at the opening, and the control device comprises an oil level detection unit, an engine oil quality detection unit and a control unit. The oil level detection unit detects the liquid level in an oil pan and transmits the liquid level to the control unit, and the control unit controls the two-way oil delivery pump to stop, controls the three-position three-way electromagnetic valve to be disconnected from the engine oil tank and stops refueling according to received signals; the engine oil quality detection unit detects the engine oil quality and transmits the engine oil quality to the control unit, and the control unit controls the bidirectional oil delivery pump and