Oil Compatibility Research Paper

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3.1.5 Oil Compatibility The factors on which the oil compatibility depends are the clearances of mating parts, viscosity of oil, operating temperature, pressure and lubricity and wear rate of the pump. There are some rules for oil compatibility which are discussed according to each pump. For gear pump accepts the oil having general kinematic viscosity range in between 30 to 70 cSt at a working temperature of 10°C to 30°C. While screw pumps accepts oil from 20 to 70 cSt without any difficulty. The vane type of hydraulic pumps is suitable oil which has 30 to 50 cSt viscosities at the operating temperature of 10°C to 35°C. Piston pumps accept oil viscosities of 60-70 cSt.
3.1.6 Noise Every pump has certain level of noise which is generated
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They provide direction to the fluid and allow the flow in the particular direction. These valves are used to control the start, stop and change the direction of the fluid flow. These control valves contain ports that are external openings for the fluid to enter and leave. A valve with four ports is named as a four-way valve. The fluid flow rate is responsible for the speed of actuator and should control in a hydraulic system. To be more specific, a DCV is mainly required for the various purpose like to start, stop, accelerate, decelerate and change the direction of motion of a hydraulic actuator, To permit the free flow from the pump to the reservoir at low pressure when the pump’s delivery is not needed into the system, To vent the relief valve by either electrical or mechanical control, To keep apart certain branch of a…show more content…
Actuation is the method of moving the valve element from one position to another position.There are following methods of actuation:
a) Manually operated: In manually operated direction control valves, the spool is shifted manually by moving a handle pushing a button or by operating foot pedal. The spool returns to its original position by means of a spring, when the handle is not operated.
b) Mechanically operated: Cam & rollers is used to shifting the spool by mechanical linkages.
c) Solenoid operated: When an electric coil or a solenoid is energized, it creates a magnetic force that pulls the armature into the coil. This causes the armature to push the spool of the

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