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Worksheetsvehicle fuel, ignition, air and exhaust system units(a)
Total questions: 10
Worksheet time: 30mins
In a multi-point injection system atomised fuel is sprayed very close to which one of the following component
Continuous multi-point injection
Single –point injection
Double point injection
Sequential multi-point injection
In a multi-point injection system atomised fuel is sprayed very close to which one of the following component
Inlet valves
Exhaust valves
Engine cylinder wall
Catalytic converter
When diesel injectors are being replaced what component also needs to be renewed?
Diesel fuel filter
Injector sealing washers
Leak off and return pipes
Electronic control unit
Which one of the following would be different on a single –point injection (spi) and the multi point injection (MPI) fuel system?
Exhaust manifold location
Throttle valve location
Inlet valve position
Fuel type used
Which design cylinder head is shown in the image?
Spark ignition with two inlet valves
Compression ignition with two inlet valves
Spark ignition with three inlet valves
Compression ignition with three inlet valves
What is one advantages of using a coil per spark plug system?
High tension leads are longer
High tension leads are shorter
High tension leads are not required
High tension leads can be made from aluminium
What is the exhaust component shown in the image?
Resonator box
Expansion box
Middle box
Catalytic converter
What is the main function of a secondary air injection system
To further burn excess hydro-carbons and carbon monoxide
(HC+CO) in the exhaust manifold
To burn excess hydro –carbons and carbon monoxide (HC+CO) in the inlet manifold
To further burn excess burn excess oxides of nitrogen and carbon dioxide (NOx+CO2) in the exhaust manifold
To burn excess oxides of nitrogen and carbon dioxide (NOx+CO2) In the inlet manifold
What three harmful gases are converted by the catalytic converter?
CO₂ +H₂O+N₂
HC+CO+H₂O
HC+CO₂+H₂O
N₂+CO₂+NOx
What equipment should be used to carry out a final check after multi-point fuel injectors have been replaced?
Emission tester
Fuel pressure tester
Multimeter
Oscilioscope
