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BTU & Pounds of CO2
per Passenger Mile |
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30 mpg is assumed |
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for hybrid van. Could |
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be
higher with PHEV. |
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PM = passenger miles |
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mpg = miles per gallon for vehicle |
PHEV = Plug In Hybrid Electric
Vehicle |
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diesel has 138700 BTU and
22.2 lbs CO2 per gallon |
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gasoline has 125000 BTU and 19.4 lbs
CO2 per gallon |
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Light Rail BTU per
passenger Mile comes from : |
LightRailBTU |
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Car 1.57 |
Car 1.2 |
Conventional Bus |
Light Rail |
CMT Express Bus |
CMT Van, Gasoline |
CMT Van, Hybrid |
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passengers |
1.57 |
1.2 |
8.8 |
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20 |
3.6 |
3.6 |
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mpg |
22 |
22 |
3.8 |
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5.5 |
15 |
30 |
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PM per gallon |
34.5 |
26.4 |
33.4 |
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110.0 |
54.0 |
108.0 |
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gallon per PM |
0.029 |
0.038 |
0.030 |
0.022 |
0.009 |
0.019 |
0.009 |
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BTU per gallon |
125000 |
125000 |
138700 |
138700 |
138700 |
125000 |
125000 |
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BTU per PM |
3619 |
4735 |
4148 |
2982 |
1261 |
2315 |
1157 |
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Lbs CO2/gal |
19.4 |
19.4 |
22.2 |
22.2 |
22.2 |
19.4 |
19.4 |
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Car 1.57 |
Car 1.2 |
Conventional Bus |
Light Rail |
CMT Express Bus |
CMT Van, Gasoline |
CMT Van, Hybrid |
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Lbs CO2 per PM |
0.56 |
0.73 |
0.66 |
0.48 |
0.20 |
0.36 |
0.18 |
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Return to previous page
by using the back button on your browser. |
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Return
to Appendices List |
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Emission
Facts: Average Carbon Dioxide Emissions Resulting from Gasoline and
Diesel Fuel |
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http://www.epa.gov/otaq/climate/420f05001.htm |
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The Code of Federal
Regulations (40 CFR 600.113) provides values for carbon content per gallon of
gasoline and diesel fuel which EPA uses in calculating the fuel economy of
vehicles: |
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Gasoline carbon content
per gallon: 2,421 grams |
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Diesel carbon content per
gallon: 2,778 grams |
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CO2 emissions from a gallon of gasoline = 2,421 grams x 0.99 x
(44/12) = 8,788 grams = 8.8 kg/gallon = 19.4 pounds/gallon |
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CO2 emissions from a gallon of diesel = 2,778 grams x 0.99 x (44/12)
= 10,084 grams = 10.1 kg/gallon = 22.2 pounds/gallon |
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Calculation of Gallon per Passenger
Mile for Light Rail |
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BTU
per passenger mile |
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3000 |
See appendix |
Light
Rail BTU per Passenger Mile |
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BTU per gallon of diesel |
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138700 |
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Gallons per passenger mile |
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0.022 |
equals BTU per pass-mile / BTU per
gallon |
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