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Worksheetsfour Piston Stroke
Total questions: 15
Worksheet time: 8mins
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
In a four-stroke cycle, how many crankshaft revolutions occur per cycle?
One revolution
Two revolutions
Three revolutions
Four revolutions
During which stroke is the fuel injected in a diesel engine?
beginning of Intake stroke
End of Compression stroke
End of Power stroke
Beginning of Exhaust stroke
What main component differentiates the ignition system of a gasoline engine from a diesel engine?
Fuel injector
Spark plug
Piston
Timing belt
True or False: The intake and exhaust valves are closed during the compression stroke.
true
false
. In the power stroke, the expanding gases push the piston down. This process is driven by:
A spark in both gasoline and diesel engines
Spark ignition in gasoline and compression ignition in diesel engines
Glow plug ignition in both types of engines
Fuel compression in both engines
