Diesel engine knowledge check

What does this component do?

• Nothing - it is not part of an engine

• Actuate the valves to fill air and vent exhaust to the cylinder

• Translate reciprocating motion from the piston to rotary motion

• Meter and inject fuel to control combustion

Diesel engine combustion is the process of combusting _______________ to create an expanding gas that makes the engine operate.

• water and oil

• air and water

• fuel

• fuel and air

The flywheel is a heavy weight attached to the crankshaft that

• controls the timing to open and close the intake and exhaust valves.

• stores and releases rotational energy during the intake, compression, and exhaust strokes.

• is super fly and shaped like a pizza.

• stores and releases rotational energy to start the engine.

Each movement of the piston in and out of the cylinder is called a

• compression.

• exhaust.

• stroke.

• shift.

What is the correct order of the 4 strokes of an internal combustion engine?

• Compression, Intake, Exhaust, Power

• Power, Compression, Intake, Exhaust

• Intake, Power, Compression, Exhaust

• Intake, Compression, Power, Exhaust

Engine revolutions per minute (RPM) measure the rotations of what component?

• Camshaft

• Crankshaft

• Starter

• Connecting rods

What is the minimum number of cylinders required for a 4 stroke engine to ensure no interruptions in output power?

(ie. at least one cylinder in power stroke)

• 5

• 3

• 1

• 4

A 4 stroke, 4 cylinder engine is running at 1000 RPM. How many power strokes (ignitions) occur during 1 minute?

• 2000

• 1000

• 500

• 4000

The diameter of the engine cylinder is called the ______ and the distance the piston can move is called the ________. The multiplication of these 2 factors provides the engine __________.

• bore, stroke, displacement

• displacement, stroke, bore

• bore, cam ratio, displacement

• cat, dog, unicorn

The compression ratio is calculated by measuring the difference in the ______________ when the piston is in the lowest and highest positions. A ___________ compression ratio results in a more efficient engine.

• displacement, lower

• bore size, higher

• bore size, lower

• displacement, higher