four Piston Stroke

What are the four strokes in a typical internal combustion engine cycle?

• Compression, Expansion, Cooling, Exhaust

• Intake, Compression, Power, Exhaust

• Injection, Compression, Ignition, Exhaust

• • Combustion, Power, Exhaust, Cooling

In a gasoline engine, what triggers the ignition during the power stroke?

• Compression alone

• Fuel injection

• Spark plug

• Camshaft rotation

Which stroke involves drawing the air-fuel mixture or air (for diesel) into the cylinder?

• Compression stroke

• Exhaust stroke

• Intake stroke

• Power stroke

In a diesel engine, how is the fuel ignited?

• By a spark plug

• By high compression and heat

• By a glow plug

• By a timing belt

Which stroke is responsible for expelling burnt gases from the combustion chamber?

• Intake stroke

• Compression stroke

• Exhaust stroke

• Power stroke

In a gasoline engine, the air-fuel mixture is compressed during which stroke?

• Exhaust stroke

• Compression stroke

• Intake stroke

• Power stroke

True or False: In both gasoline and diesel engines, the power stroke is the only stroke that produces work output.

• true

• false

During the compression stroke in a diesel engine, what happens to the air inside the cylinder?

• It mixes with fuel

• It heats up due to high compression

• It cools down to prevent detonation

• It moves into the exhaust manifold

Which stroke completes one full revolution of the crankshaft in a four-stroke cycle?

• Intake stroke

• Power stroke

• Compression stroke

• Exhaust stroke

Why do diesel engines generally have higher compression ratios than gasoline engines?

• To increase power output

• To achieve ignition through heat from compression

• To allow for larger fuel injectors

• To reduce exhaust emissions