Crankcase

Crankcase: the upper crankcase is cast into one with the cylinder block, and the lower crankcase is used to store lubricating oil and close the upper crankcase, so it is also called oil pan diagram. The force on the oil pan is very small. It is usually made of thin steel plate, and its shape depends on the overall arrangement of the engine and the capacity of the oil. An oil stabilizing baffle is installed in the oil pan to prevent excessive oil level fluctuation when the car is bumped. An oil drain plug is also installed at the bottom of the oil pan. Usually, a permanent magnet is installed on the oil drain plug to absorb the metal chips in the lubricating oil and reduce the wear of the engine. A gasket is installed between the joint surfaces of the upper and lower crankcase to prevent lubricating oil leakage.