Page 16 - Propane Vehicle Essentials and Safety Practices
P. 16

Flammability Properties                          Emissions Properties of Propane
                                                      of Propane
                                                                                       • Lower in
                                               • Ignition temperature                     o Carbon monoxide (CO)
                                                940-1,120 F                               o Nitrogen oxides (NO X )
                                                        °
                                                 o Depends on BTU  content                o Greenhouse
                                                                                           gas emissions (CO 2 )
                                               • Flammability range is 2.2% to         • Near Zero
                                                9.6% (in air)                             o Particulates
                                                 o Below 2.2% too lean to burn          • Zero
                                                 o Above 9.6% too rich to burn
                                                                                          o Evaporative emissions


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                                                                                         How Propane Compares to Gasoline and Diesel
                                                                                                       Source and Physical State

                                                                                                         Propane     Gasoline     Diesel
                                          Lesson 2.3                                     Source        Natural Gas or   Petroleum  Petroleum
                                                                                                        Petroleum
                     How Propane Compares with Other Liquid Fuels                        Physical State  Liquid / Vapor  Liquid   Liquid

                                                                                         Vapor Density     1.5        3 to 4       8






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