The role of the oil pump in the lubrication system: The role of the oil pump is to force the oil to a certain surface of the engine after it is raised to a certain pressure. The oil pump structure can be divided into gear type and rotor type. The gear oil pump is divided into internal gear type and external gear type. The latter is generally called a gear oil pump.
The oil pump structure can be divided into gear type and rotor type. The gear oil pump is divided into internal gear type and external gear type. The latter is generally called a gear oil pump.
structure Simple structure, small size, light weight and large oil delivery. The cycloidal rotor pump adopts a structure in which the inner and outer rotors are meshed. The number of teeth is small and the structure is compact. The sealed cavity can be formed without the use of other isolation elements, and the number of parts is small.
Movement characteristics Smooth running and low noise. The number of teeth on the inner and outer rotors of the cycloidal rotor pump differs by only one tooth. When they make relative movement, the sliding speed of the tooth surface is small, and the meshing point is constantly moving along the tooth profile of the inner and outer rotors. Therefore, the mutual wear of the tooth surfaces of the two rotors is small. Due to the large enveloping angle of the oil suction chamber and the oil discharge chamber, which is close to 145 °, the oil suction and discharge times are relatively sufficient. Therefore, the oil flow is relatively stable, the movement is relatively stable, and the noise is significantly lower than that of the gear pump.
High-speed characteristics High speed characteristics.
It is used to increase the oil pressure and ensure a certain amount of oil. It is a component that forcibly supplies oil to various friction surfaces. Internal combustion engines widely use gear and rotor oil pumps. Gear oil pumps have a simple structure, convenient processing, reliable work, and long service life. The pump oil pressure is high, and it is widely used. Rotor pumps have complex rotor shapes and are often pressed by powder metallurgy. This pump has the same advantages as gear pumps, but has a compact structure and small size.