Engine dynamometer testing of homogeneous charge, spark ignition lean burn engines fueled by natural gas, hydrogen/natural gas blends and neat hydrogen was conducted to determine if NOx emissions from blended fuel operation can be reduced below those generated from natural gas operation, approaching those due to a 100% hydrogen fueled engine. The preliminary tests were conducted at the University of Central Florida/Florida Solar Energy Center on an eight cylinder automotive engine. The results indicate that the hydrogen/natural gas fuel has the potential of meeting highly restrictive NOx levels. Sandia National Laboratories conducted follow-on, comparative tests using a single cylinder research engine. The Sandia results indicate that the proposed CARB EZEV standard for NOx can be met without exhaust gas aftertreatment using a 30% hydrogen (by volume) / 70% natural gas blend fuel in a constant speed/power, hybrid vehicle application which achieves 60 MPG gasoline equivalent efficiency.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    NOx Emissions and Efficiency of Hydrogen, Natural Gas, and Hydrogen/Natural Gas Blended Fuels


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Fuels & Lubricants Meeting & Exposition ; 1996



    Publication date :

    1996-05-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Knock Characteristics and Performance in an SI Engine With Hydrogen and Natural-Gas Blended Fuels

    Mohammadi, Ali / Kawasaki, Kiyoshi / Shioji, Masahiro et al. | SAE Technical Papers | 2004


    Knock characteristics and performance in a spark ignition engine with hydrogen and natural-gas blended fuels

    Shioji,M. / Kitazaki,M. / Mohammadi,A. et al. | Automotive engineering | 2004


    Use of hydrogen and liquefied natural gas blended fuels to reduce carbon footprint in marine applications

    PERRY MARTIN / COTTULI CARL / SINGH SARAVJEET et al. | European Patent Office | 2023

    Free access

    Volatility Data on Natural Gasoline and Blended Fuels

    BRIDGEMAN, OSCAR C. | SAE Technical Papers | 1929


    Alternative fuels: alcohols, hydrogen, natural gas and propane

    Society of Automotive Engineers (SAE) | TIBKAT | 1993