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Emissions and Total Energy Consumption of a Multicylinder Piston Engine Running on Gasoline and a Hydrogen-gasoline MixtureA multicylinder reciprocating engine was used to extend the efficient lean operating range of gasoline by adding hydrogen. Both bottled hydrogen and hydrogen produced by a research methanol steam reformer were used. These results were compared with results for all gasoline. A high-compression-ratio, displacement production engine was used. Apparent flame speed was used to describe the differences in emissions and performance. Therefore, engine emissions and performance, including apparent flame speed and energy lost to the cooling system and the exhaust gas, were measured over a range of equivalence ratios for each fuel. All emission levels decreased at the leaner conditions. Adding hydrogen significantly increased flame speed over all equivalence ratios.
Document ID
19770016170
Document Type
Other - NASA Technical Note (TN)
Authors
Cassidy, J. F. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
May 1, 1977
Subject Category
AIRCRAFT PROPULSION AND POWER
Report/Patent Number
GRC-E-DAA-TN11329
E-9105
NASA-TN-D-8487
Funding Number(s)
PROJECT: RTOP 505-05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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