Oil System

Question 1

Properties of Aircraft Oil

Answer 1

High viscosity
Low pour Points
High flash point
Low carbon content

Question 2

Types of Oil System

Answer 2

DRY SUMP
WET SUMP-the oil is located in a sump

Question 3

Dry sump

Answer 3

• the oil is contained in a separate tank (oil tank)
• The pump circulates the oil through the
  system.
• Allows for a greater volume of oil to be
  supplied in the engine, that makes them
  suitable for larger reciprocating engine.

Question 4

Wet sump

Answer 4

• the oil is located in a sump, which is an integral part of the engine.
• The pump circulates the oil through the filter
• The main component of a wet-sump system is the oil pump, which draws oil from the sump and routes it to the engine. After the oil passes through the engine, it returns to the sump.
• In some engines, additional lubrication is supplied by the rotating crankshaft, which splashes oil onto portions of the engine.

Question 5

Oil system parts

Answer 5

• Sump
• Oil Pump
• Oil Cooler
• Oil Filter
• Pressure relief valve

Question 6

Oil Gauges

Answer 6

» Pressure - (60 – 90 Psi)
» Temperature – (100 – 245 F)

Question 7

Radial Oil Loss

Answer 7

• Decrease in pressure,
• Increase in temperature

Question 8

Oil Blockage

Answer 8

• Increase in pressure
• Increase in temperaturea

Question 9

Notes in oil system

Answer 9

Do not mix oil of different grades

If there is no oil pressure rise within 30
seconds, shut down engine

Signs of an oil leak