Quiz on Multipoint Fuel Injection Systems

What is the primary function of electronic multipoint fuel injection systems?

• To deliver fuel to an engine under all operating conditions

• To increase the engine's horsepower

• To reduce the engine's weight

• To improve the vehicle's aerodynamics

What component controls the fuel injector operation in modern vehicles?

• Electronic Control Unit (ECU)

• Fuel Pump

• Fuel Rail

• Air Filter

What does the fuel pump supply fuel to in a typical fuel delivery system?

• Fuel rail

• Air filter

• Exhaust manifold

• Spark plug

Where is the fuel injector connected in a fuel delivery system?

• Fuel rail

• Air filter

• Exhaust manifold

• Spark plug

What type of solenoid does the fuel injector contain?

• Electrically operated solenoid

• Magnetically operated solenoid

• Hydraulically operated solenoid

• Pneumatically operated solenoid

What is the role of the ECU in an EFI system?

• To control the throttle plate directly

• To monitor and adjust the air-fuel ratio

• To measure the exhaust gas temperature

• To control the idle speed

What does the ECU use to determine when to switch on the fuel injectors?

• Throttle position sensor and oxygen sensor

• Crankshaft sensor and camshaft sensor

• Airflow sensor and fuel pump relay

• Idle air control valve and temperature sensor

What is the main function of the flap in a flap type airflow sensor?

• To measure temperature

• To deflect incoming air

• To regulate fuel injection

• To control exhaust gases

What does the ECU use data from the MAP sensor for?

• To calculate load and fuel delivery requirements

• To measure engine temperature

• To control the exhaust system

• To regulate the air conditioning

Where is the mass airflow sensor mounted?

• Between the air cleaner and the throttle plate

• Between the fuel injector and the exhaust manifold

• Between the intake manifold and the fuel pump

• Between the throttle body and the exhaust pipe