A spark ignited engine and flow reactor study of the effect of an organic fuel additive on hydrocarbon and Nox emissions

D. L. Eccles, Thomas Litzinger

Research output: Contribution to conferencePaper

Abstract

1.0 ABSTRACT An experimental study was conducted to determine if an organic fuel additive could reduce engine out hydrocarbon and NOx emissions. A production four cylinder spark ignited engine with throttle body fuel injection was used for the study. A full boiling range base fuel, an additized base fuel, a base fuel with methyl tertiary butyl ether (MTBE) and a base fuel with MTBE and additive were used in the engine tests. Additive concentration was 1/2% by mass. Hydrocarbon and NOx measurements were recorded for 11 load/speed conditions. Hydrocarbon speciation data was taken at two of these conditions. The data from the experiments was analyzed in a pair-wise fashion for the fuels with and without the additive to determine whether statistically significant changes occurred. The results of the analysis indicated that, at a 95% confidence level, the additive reduced hydrocarbon emissions an average of 2.7% and increased NOx emissions an average of 3.5% when it was added to the base fuel blended with MTBE. No statistically significant effects of the additive were identified in the results of the speciation data. To study the effects of the additive in more detail, a high pressure flow reactor was used to react pure and additized fuels. Iso-octane, toluene, and toluene + MTBE were used in the flow reactor. The additive concentration was varied between 0-2% by mass. As an indicator of overall reactivity, carbon monoxide was measured while maintaining pressure and residence time constant. Next, speciation data was taken for a range of residence times at constant pressure and temperature. Speciation and CO data suggest that the additive increases the reaction rate of the pure fuels.

Original languageEnglish (US)
DOIs
StatePublished - Dec 1 1998
EventInternational Spring Fuels and Lubricants Meeting and Exposition - Dearborn, MI, United States
Duration: May 4 1998May 6 1998

Other

OtherInternational Spring Fuels and Lubricants Meeting and Exposition
CountryUnited States
CityDearborn, MI
Period5/4/985/6/98

Fingerprint

Fuel additives
Electric sparks
Hydrocarbons
Engines
Ethers
Toluene
Fuel injection
Engine cylinders
Carbon monoxide
Boiling liquids
Reaction rates

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

Cite this

Eccles, D. L., & Litzinger, T. (1998). A spark ignited engine and flow reactor study of the effect of an organic fuel additive on hydrocarbon and Nox emissions. Paper presented at International Spring Fuels and Lubricants Meeting and Exposition, Dearborn, MI, United States. https://doi.org/10.4271/981455
Eccles, D. L. ; Litzinger, Thomas. / A spark ignited engine and flow reactor study of the effect of an organic fuel additive on hydrocarbon and Nox emissions. Paper presented at International Spring Fuels and Lubricants Meeting and Exposition, Dearborn, MI, United States.
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abstract = "1.0 ABSTRACT An experimental study was conducted to determine if an organic fuel additive could reduce engine out hydrocarbon and NOx emissions. A production four cylinder spark ignited engine with throttle body fuel injection was used for the study. A full boiling range base fuel, an additized base fuel, a base fuel with methyl tertiary butyl ether (MTBE) and a base fuel with MTBE and additive were used in the engine tests. Additive concentration was 1/2{\%} by mass. Hydrocarbon and NOx measurements were recorded for 11 load/speed conditions. Hydrocarbon speciation data was taken at two of these conditions. The data from the experiments was analyzed in a pair-wise fashion for the fuels with and without the additive to determine whether statistically significant changes occurred. The results of the analysis indicated that, at a 95{\%} confidence level, the additive reduced hydrocarbon emissions an average of 2.7{\%} and increased NOx emissions an average of 3.5{\%} when it was added to the base fuel blended with MTBE. No statistically significant effects of the additive were identified in the results of the speciation data. To study the effects of the additive in more detail, a high pressure flow reactor was used to react pure and additized fuels. Iso-octane, toluene, and toluene + MTBE were used in the flow reactor. The additive concentration was varied between 0-2{\%} by mass. As an indicator of overall reactivity, carbon monoxide was measured while maintaining pressure and residence time constant. Next, speciation data was taken for a range of residence times at constant pressure and temperature. Speciation and CO data suggest that the additive increases the reaction rate of the pure fuels.",
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Eccles, DL & Litzinger, T 1998, 'A spark ignited engine and flow reactor study of the effect of an organic fuel additive on hydrocarbon and Nox emissions', Paper presented at International Spring Fuels and Lubricants Meeting and Exposition, Dearborn, MI, United States, 5/4/98 - 5/6/98. https://doi.org/10.4271/981455

A spark ignited engine and flow reactor study of the effect of an organic fuel additive on hydrocarbon and Nox emissions. / Eccles, D. L.; Litzinger, Thomas.

1998. Paper presented at International Spring Fuels and Lubricants Meeting and Exposition, Dearborn, MI, United States.

Research output: Contribution to conferencePaper

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T1 - A spark ignited engine and flow reactor study of the effect of an organic fuel additive on hydrocarbon and Nox emissions

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AU - Litzinger, Thomas

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N2 - 1.0 ABSTRACT An experimental study was conducted to determine if an organic fuel additive could reduce engine out hydrocarbon and NOx emissions. A production four cylinder spark ignited engine with throttle body fuel injection was used for the study. A full boiling range base fuel, an additized base fuel, a base fuel with methyl tertiary butyl ether (MTBE) and a base fuel with MTBE and additive were used in the engine tests. Additive concentration was 1/2% by mass. Hydrocarbon and NOx measurements were recorded for 11 load/speed conditions. Hydrocarbon speciation data was taken at two of these conditions. The data from the experiments was analyzed in a pair-wise fashion for the fuels with and without the additive to determine whether statistically significant changes occurred. The results of the analysis indicated that, at a 95% confidence level, the additive reduced hydrocarbon emissions an average of 2.7% and increased NOx emissions an average of 3.5% when it was added to the base fuel blended with MTBE. No statistically significant effects of the additive were identified in the results of the speciation data. To study the effects of the additive in more detail, a high pressure flow reactor was used to react pure and additized fuels. Iso-octane, toluene, and toluene + MTBE were used in the flow reactor. The additive concentration was varied between 0-2% by mass. As an indicator of overall reactivity, carbon monoxide was measured while maintaining pressure and residence time constant. Next, speciation data was taken for a range of residence times at constant pressure and temperature. Speciation and CO data suggest that the additive increases the reaction rate of the pure fuels.

AB - 1.0 ABSTRACT An experimental study was conducted to determine if an organic fuel additive could reduce engine out hydrocarbon and NOx emissions. A production four cylinder spark ignited engine with throttle body fuel injection was used for the study. A full boiling range base fuel, an additized base fuel, a base fuel with methyl tertiary butyl ether (MTBE) and a base fuel with MTBE and additive were used in the engine tests. Additive concentration was 1/2% by mass. Hydrocarbon and NOx measurements were recorded for 11 load/speed conditions. Hydrocarbon speciation data was taken at two of these conditions. The data from the experiments was analyzed in a pair-wise fashion for the fuels with and without the additive to determine whether statistically significant changes occurred. The results of the analysis indicated that, at a 95% confidence level, the additive reduced hydrocarbon emissions an average of 2.7% and increased NOx emissions an average of 3.5% when it was added to the base fuel blended with MTBE. No statistically significant effects of the additive were identified in the results of the speciation data. To study the effects of the additive in more detail, a high pressure flow reactor was used to react pure and additized fuels. Iso-octane, toluene, and toluene + MTBE were used in the flow reactor. The additive concentration was varied between 0-2% by mass. As an indicator of overall reactivity, carbon monoxide was measured while maintaining pressure and residence time constant. Next, speciation data was taken for a range of residence times at constant pressure and temperature. Speciation and CO data suggest that the additive increases the reaction rate of the pure fuels.

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Eccles DL, Litzinger T. A spark ignited engine and flow reactor study of the effect of an organic fuel additive on hydrocarbon and Nox emissions. 1998. Paper presented at International Spring Fuels and Lubricants Meeting and Exposition, Dearborn, MI, United States. https://doi.org/10.4271/981455