What is scavenge pump oil?
n. (General Engineering) an oil pump used in some internal-combustion engines to return oil from the crankcase to the oil tank.
What sends the oil back to the oil tank in a dry sump system?
A dry sump system relies on a separate holding tank and two oil pumps. The first pump pulls the oil from the crankcase and pushes it to a remote holding tank or reservoir. A second pump sends pressurized oil from the tank to the oil galleys in the engine.
Where does the turbine engine oil scavenge system return the oil to?
tank
Although the oil system of the modern gas turbine engine is varied in design and plumbing most have units which perform similar functions. In most cases a pressure pump or system furnishes oil to the engine to be lubricated and cooled. A scavenging system returns the oil to the tank for reuse.
Which pump sends oil back to the oil tank?
The scavenger oil pump has several stages that pull oil from the bearing compartments and gear boxes and sends the oil to the tank. At the tank, the oil enters the deaerator, which separates the air from the scavenge oil. The oil returns to the tank and the air is vented through a check valve overboard.
What type of turbine engine oil pump is the most common?
(1) Wet sump oil systems are most commonly used in gas turbine engines.
Where does the oil come from in a scavenge pump?
Although the term “stages” is commonly used to describe multiple scavenge pumps, they typically run in parallel, rather than in series as the term might imply. The pressure stage draws oil from the bottom of the reservoir, and along with an adjustable pressure regulator, supplies the oil under pressure through the filter and into the engine.
How does the scavenge line Keep Your compressed air oil free?
The scavenge line is found on all bigger oil injected rotary screw compressors and plays a crucial part in the removal of oil from the compressed air. Most people know that the oil separator filter is the part that separates the oil from the compressed air. But that is only part of the story.
Why is a scavenge pump better than a pressure pump?
Furthermore, scavenge pumps can be of a design that is more tolerant of entrapped gasses than the typical pressure pump, which can lose suction if too much air mixes into the oil. Since the pressure pump is typically lower than the external oil tank, it always has a positive pressure on its suction regardless of cornering forces.
Where does the oil go after it collects in the sump?
The oil collects in sump (1), is withdrawn continuously by scavenge pump (2) and travels to the oil tank (3), where gases entrained in the oil separate and the oil cools. Gases (6) are returned to the engine sump.
Although the term “stages” is commonly used to describe multiple scavenge pumps, they typically run in parallel, rather than in series as the term might imply. The pressure stage draws oil from the bottom of the reservoir, and along with an adjustable pressure regulator, supplies the oil under pressure through the filter and into the engine.
The scavenge line is found on all bigger oil injected rotary screw compressors and plays a crucial part in the removal of oil from the compressed air. Most people know that the oil separator filter is the part that separates the oil from the compressed air. But that is only part of the story.
Why does a sump pump need a scavenge passage?
It helps to push sump oil up and out the scavenge passage to the return side of the oil pump. It also initiates the splash and mist process as the compressed air above the oil is ready to spring up when the piston rises. Then the upstroke of the piston creates an upward vacuum bringing some of the oil from the sump with it.
The oil collects in sump (1), is withdrawn continuously by scavenge pump (2) and travels to the oil tank (3), where gases entrained in the oil separate and the oil cools. Gases (6) are returned to the engine sump.