1. What isOil pump
The oil pump is the oil pump in the engine. Its function is to increase the oil to a certain pressure. It is forcefully sent to the moving surfaces of various engine parts to ensure a certain amount of oil. The oil pump is the power source for oil circulation in the engine lubrication system. The oil pump is installed at the lower part of the engine block. When rotating, the oil in the oil pan is pressurized and discharged to the lubricating oil circuit. After being filtered by the oil filter, it enters the required lubricating components. s surface.
2. What parts does the oil pump consist of?
Oil pumps are divided into gear oil pumps and rotor oil pumps according to different structural forms:
1. The gear oil pump is composed of two identical gears and pump casing. The specific parts include end cover, oil pump drive shaft, casing, driven gear, driven gear shaft, driving gear, pressure limiting valve and driving gear. wait.
2. The rotor oil pump consists of a casing, an inner rotor, an outer rotor and a pump cover. The inner rotor is fixed on the rotor shaft with keys or pins and is driven directly or indirectly by the crankshaft gear.
3. What is the working principle of a car oil pump?
The structures of car oil pumps are different, and the principles are also different:
1. Principle of gear oil pump
When the engine is working, the driving gear on the camshaft drives the transmission gear of the oil pump, causing the driving gear fixed on the driving gear shaft to rotate. The driven gear is driven to rotate in the opposite direction, and the oil is sent from the oil inlet chamber to the oil outlet chamber along the tooth gap and pump wall. A low pressure is formed at the oil inlet chamber to generate suction, which sucks the oil in the oil pan into the oil chamber. As the main and driven gears continue to rotate, the oil is continuously pressed to the required parts.
2. Principle of rotor oil pump
The inner and outer rotors of the rotor oil pump rotate in the same direction and out of synchronization, and the rotor tooth profile is It is designed so that when the rotor rotates to any angle, the tooth profile of each tooth of the inner and outer rotors can always make point contact with each other. In this way, four working chambers are formed between the inner and outer rotors. As the rotor rotates, the volumes of these four working chambers are constantly changing. In the cavity on one side of the oil inlet passage, due to the rotor disengaging, the volume gradually increases, creating a vacuum, the oil is sucked in, the rotor continues to rotate, and the oil is brought to the side of the oil outlet passage. At this time, the rotor just enters the mesh. , so that the volume of this cavity is reduced, the oil pressure is increased, the oil is squeezed out from between the teeth and sent out through the oil outlet pressure. In this way, as the turnAs the rotor continues to rotate, oil is continuously sucked in and pressed out.
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