TechnicianVision · Knowledge base
Powertrain Overview: Compressed Natural Gas (CNG)
I-CAR · May 14, 2019
Summary
This article provides an overview of Compressed Natural Gas (CNG) powertrains, highlighting that while they function similarly to traditional gasoline engines, they utilize high-pressure fuel storage tanks, regulators, and sensitive electrical components. It emphasizes the safety precautions required when repairing these vehicles, particularly regarding high-pressure fuel lines and electrical systems.
What to do on the job
Disconnect and isolate the 12-volt battery and electrical system before performing any welding or repairs, and inspect the high-pressure gas tanks, lines, and pressure releases post-collision.
How to use it
Use this document to justify the labor time and safety protocols required for disconnecting the battery and inspecting the high-pressure CNG fuel system, including tanks, lines, and pressure relief valves, on any alternative fuel vehicle involved in a collision.
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