A compact onboard hydrogen generator has been developed for use with a hydrogen-enriched gasoline internal combustion engine. The unit uses gasoline and air in a partial oxidation reactor to produce a gaseous product containing hydrogen, carbon monoxide, minor amounts of methane, carbon dioxide and water, and nitrogen. A study of the theoretical equilibrium product composition has indicated an optimum operating point at an air/fuel ratio of 5.15, where a hydrogen/fuel mass ratio of 0.136 can be obtained under soot-free conditions. This is based on a gasoline with an atomic hydrogen to carbon ratio of 1.92.Both thermal and catalytic reactors have been tested. The thermal unit requires a reaction temperature of 2400°F to obtain 80% of the theoretical hydrogen yield. Soot formation tends to be a problem. The catalytic reactor yields close to theoretical yields at an operating temperature of 1800°F without any soot formation. A commercial nickel catalyst is used. A 100 h test with the catalytic unit showed no signs of performance degradation, using fully leaded Indolene 30.The calculated effect of hydrogen generator operating conditions on the fuel efficiency of a generator/engine combination is presented.


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    Title :

    On-Board Hydrogen Generator for a Partial Hydrogen Injection Internal Combustion Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    National West Coast Meeting ; 1974



    Publication date :

    1974-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    On Board Hydrogen Generator For a Partial Hydrogen Injection Internal Combustion Engine

    Houseman,J. / Cerini,D.J. / Jet Propulsion Lab., California Inst. of Techn. | Automotive engineering | 1974


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