Fuel System

What is the function of a fuel injection system?

• To adjust the suspension system

• To deliver the correct mixture of air and fuel to each cylinder at the correct time

• To regulate the tyre pressure

• To control the temperature of the engine

What is the ideal air-fuel ratio for complete combustion of gasoline?

• 12:1

• 14.7:1

• 16:1

• 18:1

Tags

NGSS.HS-PS1-4

When does the maximum engine performance occur in terms of air-fuel ratio?

• At λ = 1.5

• At λ = 1.1

• At λ = 0.8

• At λ = 1

Under what conditions are λ = 1 mixtures used?

• Under cold start conditions

• Under high load and acceleration conditions

• Under light load and cruise conditions

• Under normal driving conditions

What is the main advantage of direct fuel injection systems?

• Lower power output

• Lower fuel pressure

• Inaccurately controlled emissions

• Improved fuel economy

Tags

NGSS.HS-PS3-3

Which type of fuel injection system uses a common fuel rail to supply fuel to all injectors?

• Mechanical Continuous Fuel Injection System

• Single Point Fuel Injection System

• Electronic Multipoint Fuel Injection System

• Direct Fuel Injection System

In which type of fuel injection system is fuel directly injected into the combustion chamber?

• Single Point Fuel Injection System

• Direct Fuel Injection System

• Electronic Multipoint Fuel Injection System

• Mechanical Continuous Fuel Injection System

Tags

NGSS.HS-PS3-4

What component controls the fuel delivery in a mechanical continuous fuel injection system?

• Fuel distributor

• Air flow sensor

• Throttle position sensor

• Fuel pressure regulator

Which sensor is used to monitor engine conditions in a single point fuel injection system?

• Throttle position sensor

• Engine temperature sensor

• Oxygen sensor

• Air charge temperature sensor

What is the primary device used to supply fuel to an engine before the introduction of fuel injection systems?

• Direct fuel injection

• Throttle body injection

• Electronic multipoint fuel injection

• Carburetor