Natural & bio Gas Vehicle Association Europe

NGVA Europe keeps you informed!

12/12/2011 - GNVert joins NGVA Europe board of directors, which celebrates its past meeting in connection with the first NGV conference in Irelandmore
05/12/2011 - Eurogas Roadmap 2050: Natural Gas Vehicles should reach a market share of 13% and 33% respectively for passenger and freight transportmore
28/11/2011 - TEN-T Guidelines include alternative fuels: 31.7 billion euros allocated to transport under the Connecting Europe Facilitymore
23/11/2011 - EU Commission Task Force concludes that CNG and LNG should be more heavily promoted in transportmore
01/10/2011 - NGVA Europe welcomes MEP report on White Paper calling for 20% CO2 reduction in road transport by 2020more
01/10/2011 - FRANKFURT MOTOR SHOW: 5 new NGV series models. European Commission visit to Erdgas Mobil standmore
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Comparison of energy contents and CO2 emissions from different fuels

NG/biomethane used as a vehicle fuel

When looking at tailpipe CO2 emissions based on energy consumed, different fuels have different chemical properties:

Fuel % hydrogen (weight)
 LHV MJ/kg LHV kWh/kg g CO2 per kWh Theoretical
% CO2 reduction
Methane (NG/biomethane) 25,0% 50,0 13,89 198,0 29,2
Propane (LPG) 18,2% 45,6
 12,67 236,8 15,3
Butane (LPG) 17,2%
 45,3
 12,58 241,2 13,7
Diesel
 13,5%
 42,7
 11,86 267,5 4,3
Gasoline 13,5% 42,4
 11,77 279,5 0,0


The second-last column of the above table shows the tailpipe CO2 emission resulting from the burning of one kWh (LHV – lower heating value) of each respective fuel.

The last column shows the theoretical reduction of CO2 emissions, compared to gasoline in vehicles with identical properties and with identical engine efficiency.

Please note that the energy contents and the tailpipe CO2 emissions from diesel or gasoline will change when instead using a blended fuel containing biofuel components. Lower heating value contents and chemical composition must be stated for each fuel in order to calculate the theoretical CO2 emissions per kWh LHV in each fuel.


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