Page 32 - AFVi CNG & LNG Participant Guide

Module 3: Low-Pressure CNG Fuel System Components

Light-Duty  Bi-fuel– same components as
Emissions Controls gasoline
o EGR
o Catalytic converter
o EVAP system

 Dedicated NGV
o EGR on most
o Catalytic converter
o No EVAP system

Heavy-Duty
Emissions Controls

 Simplified emission controls
o Three-Way Catalyst (TWC) and Exhaust Gas Recirculation (EGR) only
 No DEF
 No DPF
 No SCR

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