Discuss the drawbacks of carbureted SI engine on the base of, Air-fuel ratio, fuel consumption, power output, emission.

Discuss the drawbacks of carbureted SI engine on the base of, Air-fuel ratio, fuel consumption, power output, emission. 
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1 Answer

Answer :

1) Air-fuel ratio: - As in SI engine Air-fuel ratio varies from 8:1 to 18.5:1 i.e. from 8 kg of air/kg of fuel to 18.5 kg of air/kg of fuel. Richer or leaner air-fuel ratio limit causes the engine to misfire, or simply refuse to run at all.

2) Fuel consumption:- as atomisation rate deepened upon velocity of air in venture also As in SI engine Air-fuel ratio varies from 8:1 to 18.5:1 so Fuel consumption is more in SI engine.

3) Power output: - power output varies due to variation of Air-fuel ratio.

4) Emission: As in SI engine Air-fuel ratio varies from 8:1 to 18.5:1 i.e. from 8 kg of air/kg of fuel to 18.5 kg of air/kg of fuel. So emission is more in SI engine.


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