The oil pump shall ensure the forced circulation of lubricating oil in the engine. The breaking of the oil pump is among the most dangerous, since it leads to the emergence of the oil fasting, the overheating of the piston group and the jamming of the engine. Types of oil pumps

Types of oil pumps

The oil pumps, the constant pressure of which are supported by the pressure relief valve, are not regulated, as opposed to regulated. In the controlled pumps, the pressure is maintained through a performance change. The vast majority of modern engines use not regulated or serviced pumps.

In the design of some turbo engines, an additional electric oil pump is used, for a limited time the supply oil to the turbine axis after the engine is stopped

Six-stage, rotary and plate oil pumps shall be used, depending on the design of the automotive engines. The gear pump is the most common type. Rotary pumps also meet. The pump or warp pump is of a rare type.

Device and operating principle of the 6-stage oil pump

For internal combustion engines the oil pumps of the six-stage type are most commonly used. With a small size, they have high reliability and performance. The sixth oil pumps are not an adjustable pump.

There are two small gears in the pump body of the pump, leading and driven, with the gap between the pump body and the gears of the gears below the minimum. The lead gear is secured with the cuff to the crankshaft (sometimes other transmission patterns occur), and the follower is rotated freely on the axis.

Use of reduced viscosity in heavy-duty engines is related to the need to facilitate the operation of the oil pump

When the shaft rotates the pump, the shaft shall be removed from the suction channel and injected into the system through the injection channel. If the pressure of the injection oil is excessive, the pressure relief valve in the pump body, consisting of a ball with a spring, is activated. Under the oil pressure, the ball will compress the spring, skipping part of the oil in the pan of the engine's crankcase. This allows optimal oil pressure in the system (4-5 kg/cm).

Pumps are divided into two types: external or internal. The outer cordon presuppositions the position of the two gears adjacent to each other and the inner coupling means that one gear is placed inside the other. The crankshaft rotational speed and the performance of the gear oil pump per unit of time are proportional. This explains the difference in the readings of the oil pressure sensor with different engine modes.

Device and operating principle of the rotary oil pump

Rotary-type oil pumps are more structural than unregulated. They are capable of maintaining optimum oil pressure at any speed of the crankshaft.

The regulated oil pump type consists of a leader and a driven rotor mounted inside the cast. In addition to the rotors, there is also a movable curator with a setting spring. When the staler is rotated, the cavities between the rotors are adjusted to adjust the pressure to the oil injection system.

The patent for the invention of the rotary pump was first received by Canadian Charles Barnes in 1874

When the speed of the crankshaft is increased, the need for oil is increasing. The system is dropping and the adjustment spring shifts. It moves the driven rotor, increasing the volume of the cavity between it and the leading rotor. The oil pressure is increasing, and the pump's capacity is increasing.

When the crankshaft rotates is reduced, the reverse process occurs. The oil flow decreases and the system pressure increases. The adjustment spring is compressed by moving the herd. The latter changes the position of the driven rotor, reducing the volume of the cross-rotor cavity, the oil pressure is dropping, and the pump's capacity is declining.

The unregulated rotor pump serves the oil in the system in accordance with the same principle as the oil pump. The oil supplied to the pump through the suction valve is captured by the blades and is moved to the pressure blower system. In the case of increased oil pressure, it is discharged through the pressure relief valve.

The use of variable oil pump oil pumps significantly reduces the amount of power to be selected. Due to the fact that the rotary pump is operating at a lower speed than the gear grade, the engine oil service life is increasing and the padding decreases.

Operation of oil pump

Only two factors affect the length of the oil pump operation: the quality and quantity of oil filled into the lubrication system. Like any mobile device, the pump must be oiled and it is done with the same oil that pumps through. The initial quality of the oil, as well as the frequency of its replacement, affects the life of the pump.

In the Fiat 1964 engines, the oil pump was produced from the prequel. During the transition to a [ [ bivalent]] system, the company moved to a conventional drive from the wheel

The "weak points" of the design may include the springs used in the oil pump design. Like any heavy metal element, they are prone to fatigue, resulting in the relaxation of springs and, as a consequence, a drop in pressure in the lubrication system.

In case of failure of the oil pump, it shall be replaced, as the cast shell is not disassembled.




Add comment

Security code
Refresh