Page 32 - CNG ESP Participant Guide2024
P. 32
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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