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Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles (2015) / Chapter Skim
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Appendix L: Relationship between Power and Performance
Pages 395-395

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From page 395...
... % Change in 0 to V = 60 mph (88 ft/sec) T60 60 mph time Hp % Change in Hp t60 = 0 to 60 mph acceleration time 8 seconds Base 205 Base 7.2 seconds − 10% 227 + 10.7% During a wide-open throttle acceleration, the tractive force can be expressed as following at the 60 mph condition: These results show that approximately a 10 percent decrease in 0 to 60 mph time requires approximately a 10 percent increase in power.
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Key Terms

  • leaving lbf
  • aerodynamic drag
  • tractive force
  • tire rolling
  • units leaving

  • rolling resistance
  • drag coefficient
  • following parameters
  • throttle acceleration
  • requires approximately

  • tractive effort
  • following equation
  • mph acceleration
  • effort force
  • time requires

  • acceleration time
  • faerodynamic drag
  • frolling resistance
  • lb force
  • lb mass

  • following relationship
  • lb midsize
  • percent decrease
  • percent increase
  • equation yields

  • throughout equations
  • level road
  • force exerted
  • applying equation
  • lbf electric


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