Analyzing Real-World Light Duty Vehicle Efficiency Benefits: NREL (National Renewable Energy Laboratory)

Research output: NRELPresentation


Off-cycle technologies represent an important pathway to achieve real-world fuel savings, through which OEMs can potentially receive credit toward CAFE compliance. DOE national labs such as NREL are well positioned to provide objective input on these technologies using large, national data sets in conjunction with OEM- and technology-specific testing. This project demonstrates an approach that combines vehicle testing (dynamometer and on-road) with powertrain modeling and simulation over large, representative datasets to quantify real-world fuel economy. The approach can be applied to specific off-cycle technologies (engine encapsulation, start/stop, connected vehicle, etc.) in A/B comparisons to support calculation of realistic real-world impacts. Future work will focus on testing-based A/B technology comparisons that demonstrate the significance of this approach.
Original languageAmerican English
Number of pages27
StatePublished - 2016

Publication series

NamePresented at the Vehicle Technologies Office (VTO) Annual Merit Review and Peer Evaluation, 6-10 June 2016, Washington, D.C.

NREL Publication Number

  • NREL/PR-5400-66268


  • A/B comparison
  • CAFE compliance
  • fuel savings
  • off-cycle technologies
  • powertrain modeling
  • vehicle testing


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