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

961103

05/01/1996

Event
International Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/961103
Pages
15
Citation
Hoekstra, R., Van Blarigan, P., and Mulligan, N., "NOx Emissions and Efficiency of Hydrogen, Natural Gas, and Hydrogen/Natural Gas Blended Fuels," SAE Technical Paper 961103, 1996, https://doi.org/10.4271/961103.
Additional Details
Publisher
Published
May 1, 1996
Product Code
961103
Content Type
Technical Paper
Language
English