System and method for controlling dual oil pump

A system for controlling a dual oil pump of an engine, comprising:

• an oil pan to store engine oil;
• a battery;
• an electric oil pump configured to discharge the engine oil from the oil pan using a motor driven with electric power supplied from the battery;
• a mechanical oil pump connected to a crankshaft of the engine and configured to discharge the engine oil from the oil pan using a mechanical driving force of the engine;
• an oil gallery for circulating the engine oil discharged by the electric oil pump and the mechanical oil pump to each part of the engine;
• a transmission passage configured to deliver the engine oil discharged from the electric oil pump and the mechanical oil pump to the oil gallery, and including:
• an electric oil pump outlet connected to the electric oil pump and a mechanical oil pump outlet connected to the mechanical oil pump;
• a data detector configured to detect engine data to control the electric oil pump;
• and
• a controller configured to control operation of the electric oil pump,
• wherein:
• the data detector includes an oil pressure sensor configured to detect an oil pressure of the oil gallery, and an RPM sensor configured to detect revolutions per minute (RPM) of the engine,
• the electric oil pump outlet and the mechanical oil pump outlet of the transmission passage are directly connected to each other, and
• the controller is configured to:
• determine a target oil pressure of the oil gallery based on the engine data detected through the data detector, and
• rotate the electric oil pump either in a forward direction or in a reverse direction, or stop based on the target oil pressure.