Internal Combustion Engine Quiz

What is the bore in an internal combustion engine?

• The length of the piston

• The diameter of the cylinder

• The height of the engine block

• The width of the crankshaft

What does a larger bore allow for in an engine?

• Smaller pistons

• Bigger valves

• Higher fuel consumption

• Lower torque

What is the stroke in an internal combustion engine?

• The width of the cylinder

• The distance the piston travels

• The height of the engine block

• The length of the crankshaft

What is the effect of a longer stroke in an engine?

• Increases RPM

• Increases torque

• Decreases fuel efficiency

• Decreases power output

What does displacement refer to in an engine?

• The total volume displaced by all the pistons

• The total weight of the engine

• The total length of the crankshaft

• The total height of the engine block

How is displacement typically measured?

• In kilograms

• In cubic centimeters, liters, or cubic inches

• In meters

• In horsepower

What is the compression ratio (CR) in an engine?

• The ratio of the engine's weight to its power

• The ratio of the cylinder's maximum volume to its minimum volume

• The ratio of the engine's length to its width

• The ratio of the piston size to the cylinder size

What does a higher compression ratio improve in an engine?

• Efficiency and power output

• Fuel consumption

• Engine weight

• Engine length

What is required to prevent knocking with a higher compression ratio?

• Lower-octane fuel

• Higher-octane fuel

• More oil

• Less air intake

What is the position called when the piston is at its lowest?

• Top Dead Center (TDC)

• Bottom Dead Center (BDC)

• Mid Stroke

• Full Compression