Page 13 - Penske_Student Guide Book

Module 2 High-Pressure CNG Fuel System Components

Learning Objectives
1. Differentiate the three types of CNG systems and their operations
2. Identify the major high-pressure fuel system components
3. Describe the purpose of each fuel system component

Slide Topic Content Notes
Three Types of CNG Systems
 Dedicated
 Run only on CNG
 One fuel system

 Bi-Fuel
 Run on CNG or gasoline
 Two separate fuel
systems

 Dual-Fuel
 Run simultaneously on
diesel and natural gas
 Two separate fuel
systems
 Use diesel to ignite the
natural gas

CNG Fuel System Introduction

Picture Slide

Overview of High-Pressure  Fuel receptacle
Components of CNG Systems  Secondary check valve
 Defuel valve and receptacle
 Fuel lines and fittings
 Cylinder valve or valves
 Cylinders
 Pressure relief device(s) and

vent line(s)
 Manual quarter-turn shut-off

valve
 High-Pressure coalescing

filter
 Mechanical pressure gauge
 Shut-off solenoid valve
 Pressure regulator

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