Question
Download Solution PDFWhich oil pump is used in stationary diesel engines?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Oil pumps:
- The oil pump is used to pump oil from the oil sump to the oil galleries at a certain pressure.
- It is located in the crankcase and is driven by the camshaft.
Four types of oil pumps are used:
- Gear-type oil pump
- Rotor-type oil pump
- Vane-type oil pump
- Plunger-type oil pump
Plunger-type oil pump:
- In this type of plunger moves up and down in the cylinder.
- The plunger-type oil pump is used in stationary diesel engines.
- It is operated by a special eccentric cam.
- This pump has two non-return ball valves.
- These valves are spring-loaded balls.
- One of these is on the suction side.
- During the upward stroke, the oil is sucked through the valve.
- During the downward stroke, the non-return valve closes.
- The other non-return valve which is on the delivery side opens and permits the oil to flow out from the pump.
- This type of plunger pump is used in medium and high-pressure lubricating systems.
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