The _________ ___________ engine is a type of engine used in many machines and cars.
internal combustion
The engine works by igniting a mixture of fuel and air causing ____________.
combustion
What is this? It's the _______________.
crankshaft
What is this? It's the _________ ___________.
connecting rod
The explosive force of the combustion pushes a _____________ down a cylinder.
piston.
What is this? It's the __________, which is the heart of the engine.
piston
A ___________ _______ connects the piston to a crankshaft.
connecting rode
The combustion process is controlled by a __________________.
camshaft
What happens during the intake stroke? Firstly the piston moves ________ then the intake valve __________. The fuel mixture enters the cylinder and the intake valve closes.
up, opens
What are these? They are intake and exhaust _____________.
valves
What happens to the fuel mixture in the power stroke? The fuel mixture ___________ and causes combustion.
ignites
What is this? It's a _________ ________.
spark plug
What happens during the compression stroke? The piston moves up the ________, the fuel mixture is ______________.
cylinder, compressed
What's this? It's the ______ which is expelled in the exhaust stroke.
exhaust
What happens to the spark plug during the power stroke? It creates a ___________.
spark
