vehicle fuel, ignition, air and exhaust system units(a)

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