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The bumpers on a car decrease MPG

  1. Sep 19, 2012 #1

    Low-Q

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    Hi,

    I have thought about how the bumpers affects the performance of the available power in a car engine. The bumper applies friction to the suspension so the car doesn't jump off a bumpy road. However, that friction will be a sort of energy loss. The questions is: How much energy loss is it at a given car weight and suspension travel pr. time? By how much will that decrease MPG?

    Vidar
     
  2. jcsd
  3. Sep 19, 2012 #2

    CWatters

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    Oh you mean the shock absorbers...

    http://blogs.discovery.com/files/energy-harvesting-shock-absorber-june-2011.pdf

     
  4. Sep 19, 2012 #3

    mfb

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    I think they absorb energy which would be lost anyway - just in other parts of the car. They can even reduce losses, if they keep the whole car from bumping around.
    If that energy can be extracted: Even better.
     
  5. Sep 19, 2012 #4

    Low-Q

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