The Impact of Natural Gas-Hydrogen Blends on Internal Combustion Engines Performance and Emissions
2009-24-0102
09/13/2009
- Event
- Content
- The fossil fuel consumption and the related environmental impact are important issues for the world research community: hydrogen seems to be a good alternative to fossil fuels provided that it is produced from renewable energy sources.The aim of the present work is the comparison between natural gas and a hydrogen-natural gas blend (HCNG in the following) in terms of exhaust emissions and fuel consumption. A passenger car has been tested on a chassis dynamometer according to the European emission regulations, without any change on engine calibration (i.e. spark advance). The HCNG blend used during the test has a 12% vol. of hydrogen content.CO emissions showed a reduction of about 19% when HCNG blend is used, while HC emissions remained constant. A 70% increase was observed for NOx emissions with HCNG. A 3% reduction for CO2 emission was observed using HCNG because of the lower carbon content in the blend and the reduced fuel consumption on a mass basis. There is not significant variation of fuel consumption on energy basis, probably due to the effect of a non optimal ignition timing.
- Pages
- 6
- Citation
- Unich, A., Morrone, B., Mariani, A., and Prati, M., "The Impact of Natural Gas-Hydrogen Blends on Internal Combustion Engines Performance and Emissions," SAE Technical Paper 2009-24-0102, 2009, https://doi.org/10.4271/2009-24-0102.