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

Diesel engine compresses air alone instead of an air-fuel mixture
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
Air temperature ignites the fuel in the Diesel engine

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Automobile Engineering in ME
The starting system includes

A battery, a starter, and a distributor
A battery, a distributor, and an ignition switch
A battery, a starter, and an ignition switch
A distributor, a starter, and an ignition switch

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Automobile Engineering in ME
The function of a first compression ring (top ring) is that it

Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
Maintains a seal and prevents the fuel leakage
Increases the combustion temperature
Creates swirl

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