The Measurement of Exhaust Emissions from Oxygenated Fuel Blends by Fourier Transform Infrared Spectroscopy

Paper #:
  • 950220

Published:
  • 1995-02-01
Citation:
Lowry, S., Roberts, J., Lindner, J., and Munday, D., "The Measurement of Exhaust Emissions from Oxygenated Fuel Blends by Fourier Transform Infrared Spectroscopy," SAE Technical Paper 950220, 1995, https://doi.org/10.4271/950220.
Pages:
9
Abstract:
Fourier Transform Infrared Spectroscopy (FT-IR) has been used to measure the exhaust emissions from vehicles during standard driving tests. Comparisons with conventional analyzers for modal tests have been made for the regulated species such as carbon monoxide (CO), nitrogen oxides (NOx) and total hydrocarbon (THC). The concentrations of methane, methanol and formaldehyde were also measured at one second time intervals during several driving tests. The average concentration values for these species were compared to the bag samples for several tests. Modal concentration curves were also calculated for MTBE, ETBE and several other species of interest.The results indicate FT-IR can be used for making modal measurements on the regulated species and non-regulated species in vehicle exhaust emissions. Several studies were performed to evaluate the long-term stability and sensitivity of FT-IR in actual test situations.
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