INTERNAL COMBUSTION ENGINES QUIZ

There can be limited supercharging in petrol engines because of detonation

Supercharging reduces knocking in diesel engines

Supercharging results in fuel economy

Supercharging at high altitudes is essential

More

More/less depending on capacity of engine

Same

Less

50

120

100

Starts at 40° before bottom dead centre and ends at 30° after bottom dead centre

Starts at bottom dead centre and ends at top dead centre

May start and end anywhere

Starts at 40° after bottom dead centre and ends at 30° before top dead centre

SAE 70

SEA 30

SAE 50

SAE 80

Petrol, air and lubricating oil

Petrol and lubricating oil

Air and diesel

Petrol and air

Four stroke C.I. engine, four stroke S.I. engine, two stroke S.I. engine

Four stroke S.I. engine, four stroke C.I. engine, two stroke S.I. engine

Two stroke S.I. engine, four stroke S.I. engine, four stroke C.I. engine

Four stroke C.I. engine, two stroke S.I. engine, four stroke S.I. engine

Carburettor

Ignition coil

Fuel injector

Spark plug

3 kg/hr

5 kg/hr

0.3 kg/hr

1 kg/hr

1 m3

56 m3

910 m3

5 m3