Engine mechanical components

In a 4-stroke cycle engine, the order of the stroke is as follows: intake

• compression, power and exhaust.

• compression, exhaust and power.

• power, exhaust and compression.

• exhaust, compression and power.

When tightening the cylinder head, the bolts installing sequence usually starts from

• left to right.

• front to back.

• center to outwards.

• exhaust to intake.

In a typical 4-stroke engine, what is the gear ratio between a crankshaft to a camshaft?

• 1:1.

• 4:1.

• 1:2.

• 2:1.

The connecting rod is attached to the piston by the

• piston pin.

• rod cap.

• big-end bearing.

• cap bolts.

Crankshaft thrust bearings wear will cause excessive

• speed.

• warpage.

• round out.

• endplay.

The internal combustion engine converts

• electrical energy into mechanical energy.

• mechanical energy into chemical energy.

• chemical energy into heat energy.

• potential energy into kinetic energy.

A cylinder head gasket is placed between the cylinder head and engine block because it prevents

• movements of parts.

• warpage of metals.

• oil and gas leakage.

• scratches on surfaces.

The purpose of the valve spring is to

• return the valve to its seat after its opening.

• open the valve wide enough.

• ensure a quick opening of the valve.

• ensure that the valve will open smoothly by the camshaft.

The camshaft is driven by sprockets and chain, timing gears, or by

• the fan belt.

• an oil-pump gear.

• the toothed belt.

• the distributor shaft.

One advantage of wet liners is that it

• have better sealing.

• can be rebored when worn.

• can be pre-finished to the correct size.

• are more rigid.