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  • How to convert? GGE, MPG

    I was wondering a little about how to convert all the digits you talk about in this forum..

    1 GGE (Gasoline Gallon Equivalent) how do you convert that to 1kg of CNG gas?

    1 CNG gallon as you talk about how to convert that to 1kg of CNG gas? or even 1nm3 as we use in Sweden.. (1 m3, 1 cubic meter of gas)

    1 gallon = 3.785 litre so liquids are no problems to convert for me.. But when you talk about 1 gallon of gas? Then i start to wonder...

    For example.. Fuel economy of my CNG car..
    7nm3/100km = 5,6kg CNG / 100km = 5,6kg CNG / 62.137 miles
    1nm3= 0,8kg CNG gas

    Help me convert this to MPG or GGE.
    Fuel statistics -> http://www.spritmonitor.de/en/detail/220326.html
    Volvo S60 Bi-Fuel Automatic -06
    Average consumption: 34,4MPG
    Living in Sweden (We don?t have polar bears on our streets)

  • #2
    Re: How to convert? GGE, MPG

    The metric system...
    well, a GGE of CNG is actually metered by mass, not volume. By law, one GGE should equal 5.667 pounds of gas.

    So, if you convert lbs to kg using 1 lb=.453 kg then one GGE (5.667 lb) is 2.56 KG of CNG.

    Does that sound about right?

    Jennifer

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    • #3
      Re: How to convert? GGE, MPG

      Yes, the metric system.. Its time for you guys to change now hehe...

      The calculation seems correct! Thx! You saved my day

      Then..
      One GGE gas here in Sweden (Where i live) costs 5,38$ ... hehe.. It's quite expensive..

      Then one Gallon of gasoline here costs 7,24$ .. Whats the price for gasoline in US?
      Fuel statistics -> http://www.spritmonitor.de/en/detail/220326.html
      Volvo S60 Bi-Fuel Automatic -06
      Average consumption: 34,4MPG
      Living in Sweden (We don?t have polar bears on our streets)

      Comment


      • #4
        Re: How to convert? GGE, MPG

        Regular 87 octane gasoline at the Chevron in Brea, California is $3.159/Gallon
        91 octane is $3.379
        BLUE 09 GX

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        • #5
          Re: How to convert? GGE, MPG

          Ok. Intressting! What different kind of octane do you have over there in the states?

          Here in sweden the lowest we have now is 95 octane. There is also 98 octane and at some places there is 99 octane (mosly used in tuned cars). There was also 92 octane but i think that has been removed now..

          Is there 95 octane in states too?
          Fuel statistics -> http://www.spritmonitor.de/en/detail/220326.html
          Volvo S60 Bi-Fuel Automatic -06
          Average consumption: 34,4MPG
          Living in Sweden (We don?t have polar bears on our streets)

          Comment


          • #6
            Re: How to convert? GGE, MPG

            "GGE" means 'Gasoline Gallon Equivalent'. It has little to do with the volume of 1 gallon, but rather the same amount of ENERGY as a US Gallon of Gasoline. So, when I tell someone I get 34 MPG and pay a little over $1/GGE for CNG, they can relate it to their gasoline car experience.
            02 GX
            01 GX
            03 Crown Vic
            06 GX
            Home Fueler

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            • #7
              Re: How to convert? GGE, MPG

              91 Octane in Europe is not the same as 91 Octane in the US. Europe uses the RON rating while the US uses an average (RON+MON)/2 rating. Basically 91 Octane in the US is equal to 95 Octane rating in Europe. Wikipedia has a good detailed explanation: http://en.wikipedia.org/wiki/Octane_rating
              Adrian

              Navy 2008 Civic GX (wife's)
              Silver 2012 Toyota Prius
              Grey 2012 Civic Natural Gas (mine)

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              • #8
                Re: How to convert? GGE, MPG

                The energy content is usually related to BTU content, about 114,000 btu per 1 gge of Natural gas or 2.56kg or about 5.5lbs + or - of mass. Kevin

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