Engine Fundamentals

Technician A says the engine camshaft converts reciprocating motion of the piston into the rotary motion for power output. Technician B disagrees and says the crankshaft performs this function. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

The distance a piston travels up or down in a cylinder is limited by the:

• flywheel

• camshaft

• crankshaft

• valve train

The air-fuel mixture is actually burned during the:

• power stroke

• intake stroke

• exhaust stroke

• compression stroke

How many crankshaft rotations are needed to complete the four-stroke cycle?

• one

• two

• three

• four

Automobile engines normally have:

• four cylinders

• six cylinders

• eight cylinders

• all of the above

A flywheel preforms each of these functions except:

• contains a gear used for engine starting.

• smooths engine operation.

• provides lubrication to engine parts.

• connects crankshaft to transmission.

Which of the following causes piston movement during non-power-producing strokes?

• Flywheel

• Connecting rod

• Counterweights

• Main thrust bearing

Which of the following components transfers combustion pressure to the crankshaft and connecting rods?

• Piston

• Camshaft

• Valve train

• Thrust bearing

Which of the following keeps a piston from tipping in its cylinder?

• Piston pin

• Piston boss

• Piston skirt

• Piston head

An engine has been diagnosed with blowby. Technician A says the engine could have a cracked flywheel. Technician B says the compression rings could have been worn. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B