Automobile Engineering in ME
The most effective method of controlling S.I. engine exhaust emission is by

None of these
Using catalytic converter
Using some additives in the fuel
Recirculating exhaust

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Automobile Engineering in ME
A basic difference between the spark ignition engine and the Diesel engine is that the

Fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke
All of these
Diesel engine compresses air alone instead of an air-fuel mixture
Air temperature ignites the fuel in the Diesel engine

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