Engine Components

The component that keeps all other engine parts in line is the _____

• crankshaft

• piston

• spark plug

• fuel injector

The engine block is made up of two sections. Name them.

• Cylinder block and crankcase

• Piston and cylinder head

• Camshaft and crankshaft

• Exhaust manifold and intake manifold

What are the advantages to an aluminum cylinder block?

• Lightweight and better fuel efficiency

• Higher strength and durability

• Lower cost and easier manufacturing

• Better heat resistance and longevity

All air-cooled engines have _____ on the outside of the cylinder block and cylinder head.

• fins

• wings

• blades

• vents

The crankshaft must be strong enough to withstand the rotational forces of the _____

• engine

• transmission

• brakes

• suspension

The crankshaft converts the reciprocating motion of the piston into _____ motion.

• rotational

• linear

• oscillating

• vibrational

One end of the crankshaft is tapered to receive the _____.

• journal

• throw

• flywheel

• seal

Crankshaft _____ help offset the unbalance created by the force of the reciprocating mass.

• does

• do

• did

• done

Name the three types of crankshaft main bearings used in small gas engines.

• Plain, Roller, Ball

• Tapered, Needle, Thrust

• Sleeve, Flange, Magnetic

• Hydrodynamic, Hydrostatic, Magnetic

The piston must have adequate clearance in the cylinder to allow for _____

• thermal expansion

• increased friction

• reduced lubrication

• decreased pressure