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WorksheetsFour Cycle Engine Theory
Total questions: 12
Worksheet time: 18mins
Is the piston up or down during intake cycle
Going down to exhaust airfuel gas
going down to intake airfuel gas
going up to intake airfuel gas
going up to exhaust airfuel gas.
Which valves are open/closed during intake cycle.
Intake: Open
Exhaust: Open
Intake: Closed
Exhaust: Open
Intake: Closed
Exhaust: Closed
Intake: Open
Exhaust: Closed
What is occurring in the cylinder during intake cycle?
Airfuel gas is taken in so piston can compress it.
Sparkplug ignites airfuel gas.
Airfuel gas is being let out by engine.
The piston compresses airfuel gas to get ready for explosion.
Is the piston up or down during compression cycle
The engine goes down to compress airfuel gas.
the piston goes up because explosion.
the piston goes up to compress airfuel gas.
The piston goes down because of explosion.
Which valves are open/closed during compression cycle.
Intake: Open
Exhaust: Closed
Intake: Closed
Exhaust: Closed
Intake: Open
Exhaust: Open
Intake: Closed
Exhaust: Open
What is occurring in the cylinder during compression cycle?
Airfuel gas is taken in so the engine can compress it
Sparkplug ignites gas.
Airfuel gas is being let out of engine.
The piston compresses airfuel gas to prepare for explosion.
Is the piston up or down during power cycle
Going down because of explosion.
Going up because of explosion
Going up to intake airfuel gas.
going down to let out airfuel gas.
Which valves are open/closed during power cycle.
Intake: Closed
Exhaust: Closed
Intake: Open
Exhaust: Closed
Intake: Closed
Exhaust: Open
Intake: Open
Exhaust: Open
What is occurring in the cylinder during power cycle?
airfuel gas gets compressed.
Sparkplug ignites airfuel gas.
airfuel gas cools down.
airfuel gas is taken in.
Is the piston up or down during exhaust cycle
Going up to reignite airfuel gas.
Going up to intake airfuel gas.
Going down to let out used airfuel gas
Going up to push out used airfuel gas.
Which valves are open/closed during exhaust cycle.
Intake: Closed
Exhaust: Open
Intake: Closed
Exhaust: Closed
Intake: Closed
Exhaust: Open
Intake: Open
Exhaust: Open
What is occurring in the cylinder during exhuast cycle?
Airfuel gas is being let out engine.
Sparkplug reignites airfuel gas.
Airfuel gas is being taken in.
Airfuel gas is compressed again.
