What is a scavenge pump?
Definition of scavenger pump : a pump to return used oil to a tank for cooling, purification, or storage.
What kind of pump is a scavenge pump?
The definition of scavenge pump in the dictionary is an oil pump used in some internal-combustion engines to return oil from the crankcase to the oil tank.
What is a lube and scavenge pump?
Gearbox-driven lubrication and scavenge pumps use gerotor technology to provide the customized, smallest, most compact, lightweight, reliable solution to distribute lubricating oil into main gas turbine engine and scavenge the oil back to the reservoir.
Why scavenging is required?
Scavenging is the process of removing exhaust gases from the cylinder after combustion and replenishing the cylinder with fresh air. Efficient scavenging is necessary for good combustion of fuel inside the engine cylinder. The passage of scavenge air will also assist cooling of the cylinder, piston and valves.
Why does the scavenge pump have a high capacity than the pressure pump?
The reason for the higher capacity of the scavenge pump is that the oil which flows o the sump in the engine is somewhat foamy and therefore has a much greater volume than the air-free oil which enters the engine via the pressure pump.
What is dry sump lubrication system?
A dry-sump system removes oil from the crankcase, along with the possibility of such viscous drag. More complex dry-sump systems may scavenge oil from other areas where oil may pool, such as in the valvetrain.
What is the purpose of the scavenge pump in the dry sump lubrication system of a piston engine?
Dry sump systems may optionally be designed to keep the engine’s crankcase at lower than atmospheric pressure (vacuum), by sealing the crankcase and allowing the scavenge pumps to draw out both oil and gases.
What are the three methods of scavenging?
Abstract: The process of simultaneously purging exhaust gas and filling the cylinder with fresh charge for a new cycle is referred to as scavenging. The main scavenging methods are cross scavenging, loop scavenging and uniflow scavenging.
What factors does scavenging depend on?
Satisfactory Scavenging Depends on:
- Efficient evacuation of exhaust gases.
- Exhaust ports or valves open before scavenge ports.
- Scavenge ports close after the process of gas exchange.
- Loss of fresh air through exhaust passage to be minimum.
Does wet sump have scavenge pump?
Wet sump systems store the oil in the pan but a dry sump system stores it in a separate tank and pumps the pan clean leaving it essentially “dry”. The usual set up for a dry sup system uses all but one of the stages to scavenge oil from the pan and the last stage is used to pump oil from the motor.