MEV351 Chapter 4

Which component is responsible for mixing fuel and air in the induction system of an automotive engine?

• Throttle body

• Intake manifold

• Mass airflow sensor

• Fuel injector

What is the purpose of an air filter in an automotive induction system?

• To increase engine power

• To regulate fuel flow

• To cool the incoming air

• To remove contaminants from the air

Which of the following statements about forced induction systems is true?

• Forced induction systems use superchargers to compress air.

• Forced induction systems increase engine efficiency but not power.

• Turbochargers are the only type of forced induction systems.

• Forced induction systems rely on natural aspiration.

What is the purpose of an intercooler in a forced induction system?

• To regulate boost pressure

• To cool the intake air

• To control fuel injection

• To increase engine displacement

Which of the following is a disadvantage of a naturally aspirated induction system?

• Higher maintenance requirements

• Reduced fuel efficiency

• Limited power output

• Increased engine weight

Which of the following components is responsible for controlling the timing of valve opening and closing in an automotive induction system?

• Camshaft

• Crankshaft

• Timing belt

• Serpentine belt

What is the purpose of a throttle position sensor (TPS) in an automotive induction system?

• To measure the mass of incoming air

• To regulate the fuel flow rate

• To monitor the position of the throttle plate

• To control the intake manifold pressure

What is the primary difference between a turbocharger and a supercharger in an automotive induction system?

• Turbochargers are belt-driven, while superchargers are exhaust-driven.

• Turbochargers increase power output at high RPM, while superchargers enhance low-end torque.

• Turbochargers compress intake air using exhaust gases, while superchargers use a belt-driven compressor.

• Turbochargers are more fuel-efficient, while superchargers provide better overall performance.

Which of the following statements regarding turbo lag is true for turbocharged automotive engines?

• Turbo lag occurs when the supercharger fails to deliver the expected boost pressure.

• Turbo lag is the delay in power delivery due to the time required for the turbocharger to spool up.

• Turbo lag is a phenomenon specific to supercharged engines and does not affect turbocharged engines.

• Turbo lag can be eliminated by installing a larger intercooler in the induction system.

Which of the following components is commonly used to regulate the boost pressure in a turbocharged induction system?

• Throttle valve

• Wastegate

• Intercooler

• Recirculation valve