Automobile Engineering in ME
In a Diesel engine, the function of a fuel injector is to

Spray atomized fuel in the cylinder
Mix the fuel and air
Ignite the air-fuel mixture
Provide flame front for ignition

ANSWER DOWNLOAD EXAMIANS APP

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

Creates swirl
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

ANSWER DOWNLOAD EXAMIANS APP