Lab 7 oil
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AVS 1235
Project #7
Reciprocating Engine Lubrication Systems
Purpose:
Become familiar with different types of aircraft reciprocating engine oils and lubrication systems.
Reference:
https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/
amt_powerplant_handbook.pdf
Chapter 6
Internet
Activities:
Part 1: Answer the following questions based on the Aeroshell video shown in class. (
https://www.youtube.com/watch?v=dpPj67eUKrQ
)
1.
Who are the two main manufacturers of aircraft reciprocating engines?
Teledyne Continental and Lycoming 2.
What is TBO?
Time Between Overhauls 3.
What is the name of the rotating portion of the engine that drives the propeller?
Crankshaft 4.
The inlet (intake) valve opens in the cylinder to allow Fuel and Air into the cylinder.
5.
The rapid Expansion of the burning fuel/air mixture pushes the piston down.
6.
If an aircraft reciprocating engine sits without running for long periods of time, Corrosion can develop on the internal components.
7.
Aeroshell recommends using thick oils in hot climates.
8.
A single-grade aviation oil should be matched to the Climate where the aircraft operates.
9.
Engine oil is stored in the Reservoir
10. Oil is drawn from the reservoir into the Pump which sends the oil to the filter for cleaning.
11. What is the name of the oil passages in the engine?
Galleries 12. The Crankshaft Bearings are the first part of engine internal components to receive oil.
13. What does the camshaft control in the engine?
Valve timing 14. What is the last area of engine to receive oil?
Camshaft 15. What is the main reason Lycoming engines do not reach TBO
Camshaft and Lifter wear caused by infrequent use of the engine.
16. What is the purpose of the oil additives used in Aeroshell oil?
Protects the oil from copper on camshaft Part II: Go to www.aircraftspruce.com
and gather the following information.
1.
List the current price of a quart of oil for the following oils.
A)
Aeroshell 15W50
12.95
B)
Aeroshell 100W
10.50
C)
Aeroshell 100 Mineral
15.65
D)
Phillips X/C 20W50
9.50
E)
Phillips 20W50 Type M
8.75
2.
How much Lycoming oil additive (LW-16702) should be added to an engine that has a 12-quart sump?
12oz 3.
What is the price of a Champion CH48110-1 oil filter?
71.80
4.
What is the purpose of the Christen 801 inverted oil system?
Ensures regular engine lubrication with little oil loss when doing aerobatics.
Questions:
1.
What is Camguard? Could you legally use it on an aircraft?
An oil addition that prevents rust and corrosion and lessens wear and deposit buildup. Using it is permitted.
2.
What are the six functions of lubricating oil?
Reduce Friction, Creates Seals, Cooling, Absorbs Heat, Reduce Imbrue, Remove Debris 3.
Define viscosity.
Measure of a fluid’s resistance to flow
4.
What does the letter “W” indicate in the SAE rating of an engine oil?
Winter use and Cold Climates 5.
What is a wet sump lubrication system?
Is a component of a lubrication system that uses the crankcase sump as an integrated oil tank.
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