CO
CO2
NOX
SOX
.
Diesel engine fluid
Diesel exhaust fluid
Diesel emission fluid
Diesel engine fuse
Silicon controlled rectifier
Selective catalytic reduction
Selective controlled rectifier
Selective controlled reduction
Engine gas recirculation
Exhaust gas recirculation
Exhaust gate regulator
Emission gas recirculation
From fuel tank
From carburettor
From blow by crank case
From exhaust manifold