Vehicle Engines Quiz

What does the term 'normally aspirated' mean?

• The vehicle uses nitrogen to aid fueling

• Engines that use no form of forced induction, relying on the suction of the piston alone.

• Engines that use a turbo charger

• Engines that use a super charger

From the picture, assuming the engine is turning clockwise, where would you find the 'trust side' of the cylinder/piston?

• The left hand side of the picture between the cylinder and piston

• On top of the piston

• At the gudgeon pin

• The right hand side of the picture between the piston and cylinder

Name one major way of improving volumetric efficiency

• Fitment of a bigger carburettor

• Removal of excess weight

• Fitment of forced induction

• Advancing ignition timing

Define the term 'torque'

• A force applied kinetically, for example energy stored in the flywheel

• Turning effort, for example, effort produced at the crankshaft as it is rotated.

• Work done, for example, effort produced at the crankshaft as it is rotated.

• This is the amount of inertia produced during engine running periods.

Define the term 'Squish'

• The downward motion of the piston

• Forced air induction

• A term used instead of 'stroke' when describing the operation of a rotary engine

• The air and fuel are squished towards the centre of the combustion chamber and towards the spark plug.

What is the function of a carburettor in an internal combustion engine?

• To mix air and fuel in the correct ratio for combustion

• To cool the engine

• To lubricate the engine parts

• To increase the engine's compression ratio

What does the term 'compression ratio' refer to in an engine?

• The ratio of the volume of the combustion chamber at its largest capacity to its smallest capacity

• The ratio of the engine's power output to its fuel consumption

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

• The ratio of the engine's torque to its horsepower

What is the primary purpose of a turbocharger in an engine?

• To increase the engine's fuel efficiency

• To reduce the engine's emissions

• To force more air into the combustion chamber, increasing power output

• To decrease the engine's weight

What is the function of an intercooler in a turbocharged engine?

• To increase the engine's compression ratio

• To cool the air compressed by the turbocharger before it enters the engine

• To lubricate the turbocharger

• To reduce the engine's weight

What is the primary benefit of using a supercharger over a turbocharger?

• Superchargers are more fuel-efficient

• Superchargers provide immediate power boost without lag

• Superchargers reduce engine emissions

• Superchargers are lighter in weight