Operating Parameter Effects on the Speciated Hydrocarbon Emissions from a Natural Gas Fueled Engine

Paper #:
  • 942007

Published:
  • 1994-10-01
Citation:
Poulsen, J. and Wallace, J., "Operating Parameter Effects on the Speciated Hydrocarbon Emissions from a Natural Gas Fueled Engine," SAE Technical Paper 942007, 1994, https://doi.org/10.4271/942007.
Pages:
20
Abstract:
The effects of engine operating parameters on the speciated engine-out hydrocarbon emissions from a natural gas fueled spark ignition 16 valve four-cylinder engine were examined. Total hydrocarbon emissions were dominated by methane, the main component of natural gas. The non-methane hydrocarbons consisted primarily of ethane, ethene, and acetylene. Except for changes in the fuel-air equivalence ratio rich of the stoichiometric condition, emissions of unsaturated species were found to be less sensitive to engine operating parameters than were the fuel components. A single species, ethene, dominated the engine-out hydrocarbon reactivity, accounting for over 80% of the NMHC reactivity.
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