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Assessment of Fuel Economy Technologies for Light-Duty Vehicles (2011) / Chapter Skim
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Appendix E: Comparison of Fuel Consumption and Fuel Economy
Pages 169-170

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From page 169...
... This Fuel consumption difference is also the metric that defact is very important since fuel consumption is the metric termines the yearly fuel savings in going from a given fuel in CAFE. Furthermore, the harmonic average1 in the CAFE economy vehicle to a higher fuel economy vehicle: standards is determined as the sales-weighted average of the fuel consumption for the urban and highway schedules Yearly fuel savings = yearly miles driven × (FC1 - FC2)
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From page 170...
... and slope of FC/FE curve (two curves and two different scales)
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Key Terms

  • fuel consumption
  • yearly fuel
  • fuel savings
  • versus fuel
  • fractional change

  • mpg range
  • economy vehicle
  • miles driven
  • mpg contribute
  • lower fuel

  • fuel saved
  • judging yearly
  • consumption decreases
  • economy vehicles
  • consumption versus

  • assess fuel
  • highway schedules
  • nonlinear relationship
  • slope indicates
  • slope scale

  • approaches zero
  • weighted average
  • cafe fuel
  • consumption difference
  • improving faster

  • fuel efficiency
  • yearly miles
  • average cafe
  • lower curve
  • decreases slowly


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