Four-Stroke Engine Quiz

What is the primary function of the cylinder in a four-stroke engine?

• To store fuel

• To provide a sealed space for the combustion process

• To cool the engine

• To lubricate the engine parts

What moves up and down within the cylinder to drive the engine's mechanical actions?

• Valves

• Crankshaft

• Pistons

• Spark plugs

What is the primary function of a piston in an engine?

• To generate electrical energy

• To move within the cylinder and convert pressure into mechanical energy

• To cool the engine

• To store fuel

What materials can pistons be made of?

• Steel and copper

• Plastic and rubber

• Aluminum alloy and cast iron

• Wood and glass

To what component is the piston connected?

• The crankshaft

• The connecting rod

• The camshaft

• The fuel injector

What is the primary function of the intake valve in a combustion engine?

• To allow the mixture to enter the cylinder

• To allow the combustion by-products to exit

• To control the temperature of the engine

• To regulate the speed of the engine

At what times do the valves open and close in a combustion engine?

• Random times

• Specific times during the four-stroke cycle

• Only when the engine is turned off

• Continuously without stopping

What role do the exhaust valves play in a combustion engine?

• They allow the mixture to enter the cylinder

• They allow the combustion by-products to exit

• They control the flow of coolant

• They regulate the fuel injection

What is the primary function of a crankshaft in an engine?

• To convert rotary motion into reciprocating motion

• To convert reciprocating motion into rotary motion

• To transfer power to the wheels directly

• To control the fuel injection system

What type of component is a crankshaft described as?

• A simple mechanical component

• A precision-machined component

• A manually operated component

• A non-rotating component