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Technology and Economic Analysis in the Prepublication Version of the Report 'Effectiveness and Impact of Corporate Average Fuel Economy (CAFE) Standards' Letter Report (2002) / Chapter Skim
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Attachment C: Energy Balance Analysis
Pages 26-27

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From page 26...
... Furthermore, as the complexity of the technologies increases to include such things as intake valve throttling, integrated starter generators, or electrically controlled accessories, then assumptions and decisions on operating strategy, drivability, and emissions compliance are required that are time-consuming and require increasing amounts of proprietary data for simulation. In an attempt to determine whether some fundamental flaws, resulting in gross errors, had inadvertently entered the judgment-simplified analysis described above, the committee conducted a simulation of a single vehicle (midsize SUV)
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Key Terms

  • intake valve
  • indicated efficiency
  • technologies increases
  • midsize suv
  • simulation code

  • valve throttling
  • fuel consumption
  • technology features
  • city cycles
  • incremental improvements

  • effective pressure
  • test cycle
  • previously stated
  • average fuel
  • overall conclusion

  • integrated starter
  • simulated midsize
  • estimated average
  • software marketed
  • consumption improvements

  • fuel consumed
  • gas exchange
  • engine map
  • committee conducted
  • methods outlined

  • brake mean
  • analysis employed
  • mean effective
  • electrically controlled
  • incremental improvement


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