Four-Stroke Engine Fundamentals and Component Construction Quiz

Which of the following is the correct order of the four strokes in a 4-stroke engine?

• Power, Compression, Intake, Exhaust

• Intake, Compression, Power, Exhaust

• Compression, Intake, Power, Exhaust

• Power, Intake, Exhaust, Compression

During which stroke does the air-fuel mixture enter the combustion chamber?

• Compression stroke

• Intake stroke

• Power stroke

• Exhaust stroke

What closes at the beginning of the compression stroke?

• Spark plug

• Exhaust valve

• Both intake and exhaust valves

• Piston

The power stroke is caused by:

• The piston compressing the air-fuel mixture

• The ignition of the air-fuel mixture by the spark plug

• The exhaust gases being pushed out

• The piston moving upward

One complete cycle of a 4-stroke engine requires:

• One crankshaft revolution

• Two crankshaft revolutions

• Three crankshaft revolutions

• Four crankshaft revolutions

The camshaft controls the movement of:

• Spark plug

• Valves

• Piston

• Crankshaft

At the end of which stroke is the piston at Top Dead Center (TDC)?

• Intake and Power

• Power and Compression

• Compression and Exhaust

• Intake and Exhaust

The component that forms the top of the combustion chamber is the:

• Cylinder

• Cylinder head

• Crankcase

• Valve cover

The crankshaft is supported by which of the following?

• Bearings

• Pistons

• Connecting rod

• Cylinder walls

What connects the piston to the crankshaft?

• Cylinder head

• Valve lifter

• Connecting rod

• Flywheel