The next generation of automobile emissions reduction: Innovative control of off-cycle emissions

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Innovative heat management technologies can reduce emissions from cars by an order of magnitude. Substantial reductions would be realized during cold starts and in evaporative emissions. Such improvements result from a new class of variable-conductance steel vacuum insulations that insulate during one time period and take advantage of beneficial thermal conditions during another. Around a catalytic converter, for example, such control allows heat from one driving cycle to catalyze engine-out emissions occurring at the beginning of the next cycle. As with other more efficient uses of heat in automobiles, reduced complexity and cost are likely compared to supplemental catalyst heating ... continued below

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19 p.; Other: 20 p./539 Kb

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Potter, T.F. & Lyons, C.E. March 1, 1995.

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Description

Innovative heat management technologies can reduce emissions from cars by an order of magnitude. Substantial reductions would be realized during cold starts and in evaporative emissions. Such improvements result from a new class of variable-conductance steel vacuum insulations that insulate during one time period and take advantage of beneficial thermal conditions during another. Around a catalytic converter, for example, such control allows heat from one driving cycle to catalyze engine-out emissions occurring at the beginning of the next cycle. As with other more efficient uses of heat in automobiles, reduced complexity and cost are likely compared to supplemental catalyst heating systems. In a similar way, thermal cycling of fuel and the resulting vapor release can be reduced or avoided. Urban air quality could be greatly improved by the wide availability of vehicles using these technologies early in the next century. This paper presents analyses and prototype data supporting the design, operation, and rapid market penetration of internal combustion engine vehicles with significantly lower emissions based on such improved thermal management. Potential implications for fleet emissions are discussed.

Physical Description

19 p.; Other: 20 p./539 Kb

Notes

OSTI as DE95004057

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  • Air and Waste Management Association meeting, San Antonio, TX (United States), 18-23 Jun 1995

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  • Other: DE95004057
  • Report No.: NREL/TP--473-7570
  • Report No.: CONF-950646--8
  • Grant Number: AC36-83CH10093
  • Office of Scientific & Technical Information Report Number: 55290
  • Archival Resource Key: ark:/67531/metadc693338

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  • March 1, 1995

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  • Aug. 14, 2015, 8:43 a.m.

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  • March 31, 2016, 3:17 p.m.

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Potter, T.F. & Lyons, C.E. The next generation of automobile emissions reduction: Innovative control of off-cycle emissions, article, March 1, 1995; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc693338/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.