10 - Lubrication Systems Flashcards
After the pump what does the full flow system not have
Pressure regualtor
What is the difference between full flow and constant pressure systems in terms of pressure regulator
No pressure regulator in full flow systems (pressure relfief valve instead)
Pressure regulator downstream
What changes the presure in a full flow system
N2 speed, tempreature and flow areas
What does the pressure regulating valve do in a constant pressure system
Maintains oil pressure at a given value at all N2 speeds
What are the two main disadvantages of full flow
Large supply pump
Higher tempreature after power reduction
ENGINE LUBRICATION COMPONENTS TO…
OIL PUMPS
What are the two most common types of pumps
- Gear pump
- Georotor pump
What is the difference between pressure relief and regulating valve
Pressure regualting will keep the system at a certain pressure
Relief valve will only open when pre-set pressure is exceeded
Where is the oil cooler located
Downstream of the supply pump or in the scavenge line
What is the cooler system called if installed in supply line
Hot tank system (not cooled before return)
What is the cooler system called if installed in scavenge line
Cold tank system (cooled before return)
