NOx Emissions and Efficiency of Hydrogen, Natural Gas, and Hydrogen/Natural Gas Blended Fuels 961103
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.
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. Download Citation
Author(s):
Robert L. Hoekstra, Peter Van Blarigan, Neal Mulligan
Affiliated:
University of Central Florida, Sandia National Labs., Florida Solar Energy Center
Pages: 15
Event:
International Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1996 Transactions - Journal of Fuels and Lubricants-V105-4
Related Topics:
Natural gas
Lean burn engines
Nitrogen oxides
Hybrid electric vehicles
Solar energy
Hydrogen fuel
Gasoline
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