Page 18 - Penske_Student Guide Book

Module 3 Low-Pressure CNG Fuel System Components

Learning Objectives
1. Identify the major low-pressure CNG fuel system components
2. Describe the purpose of each low-pressure CNG fuel system component

Slide Topic Content Notes

Light-Duty Low-Pressure  Pressure regulator (low-
Components pressure side)

 Pressure gauge
 Fuel lines
 Low-pressure coalescing filter
 Fuel Injectors
 Optional components

 Mechanical fuel gauges
 Shut-off solenoid valves

Heavy-Duty Low-Pressure  Pressure regulator (low-
Components pressure side)

 Pressure gauge

 Fuel lines

 Low-pressure coalescing filter

 Shut-off solenoid valve
 Mixer

 Optional components
 Mechanical fuel gauges
 Shut-off solenoid valves

Pressure Regulator – Low  Set at OEM specified
Pressure Side pressure for engine operation

 Fuel pressure specification
programmed into the ECU for
optimal engine performance
and emissions

 Contains a pressure relief
device

 Is resettable

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