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Module 7: Liquefied Natural Gas (LNG)

           MODULE 7: OVERVIEW


             Introduction         Liquefying natural gas is a second way to increase its energy density to allow more fuel to
                                  be stored onboard vehicles and therefore increase vehicle range.

                                                                                                o
                                  Liquefied natural gas (LNG) is natural gas that has been chilled to -260 F and exists in
                                  what is referred to as a cryogenic state.

                                  LNG vehicles store natural gas in onboard cryogenic tanks until it is called for by the
                                  engine.

             Importance           Unlike CNG vehicles, LNG vehicles vent under normal conditions. In addition, LNG is an
                                  unodorized fuel, which cannot be detected by humans.

                                  Technicians working on or around LNG vehicles need to be able to identify the differences
                                  between LNG and CNG, as well as LNG and diesel.

             Module Overview      This module describes LNG, how it is made, and how LNG compares to other fuels.

             Learning Objectives   ▪  Describe how LNG is made and its properties and characteristics
                                  ▪  Explain the differences between LNG and CNG
                                  ▪  Compare LNG with diesel

             Order of Lessons     Lesson 7.1: What is LNG and How is it Made?
                                  Lesson 7.2: How Does LNG Compare to CNG?
                                  Lesson 7.3: How Does LNG Compare to Diesel Fuel?


































                                           NGV Essentials and Safety Practices (CNG & LNG)                            © 2024 AFVi All Rights Reserved    Page 7-1
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