#1

Question 1

Lycoming 0-320-E2D synopsis

Answer 1

• 4 Stroke engine
• 2700RPM and 150HP @ Sea Level and Standard temp
• 4 Cylinder, “Normally” Aspirated engine
• 8 Spark Plugs (2 Spark Plugs per cylinder)
• 2 Magnetos to provide redundancy and increased efficiency (fire)
• Carburetor (air), Carb icing 20-70F, Drop in RPM is a indication of carburetor icing

Question 2

What makes a engine run

Answer 2

Fuel, Fire, Air

Question 3

Cessna 172M Propeller

Answer 3

Fixed Pitched Climb Propeller

Question 4

Intake

Answer 4

Piston moves away from cylinder head and draws in fuel/air mixture through intake manifold and intake valve

Question 5

Compression

Answer 5

Both valves close and piston head moves towards the top of the cylinder (top dead center) and compresses fuel/air mixture

Question 6

Ignition

Answer 6

Top and Bottom spark plugs let off a spark and ignite the fuel/air mixture causing a controlled ignition, pushing the piston head towards the base of the cylinder which the crankshaft and therefore the propeller

Question 7

Exhaust

Answer 7

The exhaust valve opens and the cylinder head moves back towards the top of the cylinder, pushing out the exhaust gases

Question 8

Camshaft

Answer 8

Rotates in unison with the crankshaft (with gears) in order to open and close intake valves at the precise time needed. This process is repeated thousands of time a minute

Question 9

Crankshaft

Answer 9

Rotated by pistons operating at different strokes and in turn rotating the propeller which is connected to the crankshaft

Question 10

Cylinder Stroke

Answer 10

Each cylinder is on a different stroke with one piston always being on power stroke