WorksheetsI&S Petrol Fuel System
Total questions: 15
Worksheet time: 8mins
What is the role of the venturi action in a carburettor?
To freeze the fuel.
To atomise the fuel.
To solidify the fuel.
To evaporate the fuel.
What is the main focus of engine management systems?
To increase the size of the engine.
To control emissions and comply with regulations.
To change the color of the engine.
To make the engine heavier.
What is the ideal air to fuel ratio for a petrol engine by mass?
15:1
14.7:1
16:1
13.5:1
What can a blocked filter in the fuel system cause?
A shortage of fuel at the carburettor
An increase in speed
A decrease in air pressure
A louder engine noise
What connects the fuel pump to the carburettor?
Fuel lines
Air filters
Exhaust pipes
Radiator hoses
What is shown in Figure 31.3?
Basic fuel system with a carburettor
Advanced engine system
Cooling system
Electrical system
What is the function of the air cleaner in the fuel system?
To clean the air entering the engine
To filter the fuel
To cool the engine
To increase speed
What is shown in Figure 31.4?
Schematic fuel system showing the fuel lines
Electrical wiring diagram
Cooling system layout
Brake system diagram
What does the mechanical fuel pump have that moves up and down?
A flexible diaphragm
A rigid plate
A metal rod
A plastic tube
What does the fuel pump operation help prevent?
Overheating
Vapour locks
Oil leaks
Air bubbles
What is the role of the solenoid in an electric fuel pump?
To heat the fuel
To pull the diaphragm against its spring
To cool the engine
To increase fuel pressure
What does the diaphragm do in an electric fuel pump?
It heats the fuel
It moves up and down to pump fuel
It filters the fuel
It cools the engine
What is the role of the throttle valve in a carburettor?
To regulate engine speed
To cool the engine
To lubricate the engine
To clean the air filter
What does Figure 31.22 illustrate?
Returnless fuel system
Direct petrol injection system
Carburetor system
Diesel engine system
What does the air-temperature sensor adjust?
The quantity of fuel to suit air density
The car's speed
The tire pressure
The brake fluid level
