Page 15 - Penske_Student Guide Book

Slide Topic Content Notes
High-Pressure Fuel Lines
 Carries high-pressure CNG
 Stainless steel or flexible

tubing
 Stainless steel fittings
 Connect all components of

the high-pressure fuel system
 Manufactured to withstand

four times rated service
pressure (14,400 psi)
 Stainless steel or flexible
 Can have both on the same
vehicle
 Depends on manufacturer’s
specification

High-Pressure Fittings  O-ring face seal fitting
 Double ferrule fitting

Cylinder Valve  Manual
CNG Cylinders  Electric
 Electro-Mechanical

 Types of CNG Cylinders
 Type 1: All-metal (steel or
aluminum)
 Type 2: Hoop-wrapped
steel or aluminum
 Type 3: Fully-wrapped
steel or aluminum
 Type 4: All-composite
(non-metallic)

 Lifespan of a CNG Cylinder
 Have a useful life of 15,
20 or 25 years from the
date of manufacture
 At the end of useful life,
must be removed from
vehicle and destroyed

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