Monday, April 30, 2007
6-71

Hydrogen enhanced combustion of biofuels

Luke Franklin, Anil Bika, and David B. Kittelson. Mechanical Engineering, University of Minnesota, 111 Church St SE, Minneapolis, MN 55455

A passenger car diesel engine has been fitted with timed port fuel injection of hydrogen to examine the role hydrogen may play as a combustion modifier.  Many fuels that may produced from biomass, for example alcohols, are not well suited to use in diesel engines because they are highly resistant to autoignition.  In this work we are examining how small additions of hydrogen modify the autoignition process.  Initial results will describe the influence of hydrogen injection on rates of combustion, thermal efficiency and emissions with conventional and biofuels.  This is to be followed by work with mixtures of H2, CO, CO2, and H2O mimicking the composition that might be expected with onboard plasma or catalytic reforming of the main fuel.

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