Working principle of oil pump

Gear type oil pump is characterized by reliable work, simple structure, easy manufacturing and high pump oil pressure, so it is widely used. When the engine is working, the drive gear on the camshaft drives the transmission gear of the oil pump, so that the active gear fixed on the active gear shaft rotates, thus driving the moving gear to rotate in the opposite direction, the oil from the inlet cavity along the tooth gap and the pump wall to the oil cavity. In this way, the inlet cavity will form a low pressure to produce suction, the oil bottom shell oil suction into the oil cavity. As the main and driven gears continue to rotate, the oil is constantly pressed to the required area.