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Regenerative Shock Absorbers for EVs

Discussion in 'Technical' started by Raffy.Roma, Aug 30, 2013.

  1. Raffy.Roma

    Raffy.Roma Active Member

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  2. William13

    William13 Member

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    The extra weight and cost is likely to be a problem with adoption for a long time.
     
  3. Raffy.Roma

    Raffy.Roma Active Member

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    Of course, as always, a trade-off between advantages and drawbacks should be done. But it's an item that should be developed I think.
     
  4. Raffy.Roma

    Raffy.Roma Active Member

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    #4 Raffy.Roma, Aug 31, 2013
    Last edited: Aug 31, 2013
    According to the above mentioned article the regenerative shock absorbers could give from 1 to 6% extra range to EVs. Good.
     
  5. dpeilow

    dpeilow Moderator

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    Pretty sure this was around 5 years ago... could have been Michelin.
     
  6. tdelta1000

    tdelta1000 Active Member

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    Great idea that may find its way into mass produced ev's.
     
  7. Johan

    Johan Took a TSLA bear test. Came back negative.

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    Why the hell not I say! Many small streams...
     
  8. vfx

    vfx Well-Known Member

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    Bosh did them too. There are a few threads as people read about them and post.
     
  9. Raffy.Roma

    Raffy.Roma Active Member

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    I searched for the threads that you mentioned but I didn't find them.
     
  10. Raffy.Roma

    Raffy.Roma Active Member

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    #10 Raffy.Roma, Aug 31, 2013
    Last edited: Aug 31, 2013
    I also looked on Google and I found Bosch Shock Absorbers for cars but not of Regenerative kind.
     
  11. denverdan74

    denverdan74 Member

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    Power Generating Shock Absorber - PGSA
    Hydraulic electromagnetic energy-regenerative shock absorber - HESA

    Seems to be common acronyms I finally found googling these things after seeing them on StumbleUpon. I can't imagine why putting 2 of these on each wheel, plus the front steering assembly with such a heavy car as Tesla that this wouldn't create a 'constant regen'.
    Although slight, I read everyone trying to consume <300 watthours on the Energy meter...This could easily put us <200!
     
  12. tom66

    tom66 Member

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    Something something gedanken experiment. If you really think the suspension in a car is consuming 50% of the car's power, then why is it not cooled like an engine block in an ICE? Surely it would rapidly overheat.

    I saw a demo of a car using an electromagnetic suspension - instead of hydraulics it used electromagnets - the idea being that it was faster reacting. The power it put into the system was around 600 watts average. As a rough guess you might be able to recover about half of that which is 300 watts, for comparison the A/C in the Model S uses about 6000 watts.

    It doesn't pay off, for all the extra bux spent doing that they could make the battery pack bigger, or car lighter, etc.
     
  13. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    300 Watts runs the seat heater. In my opinion, it's in the same category as solar panels on cars. Greenwash only.
     
  14. EarlyAdopter

    EarlyAdopter Active Member

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    On its own maybe not so impressive, but add up 5% from regenerative shock absorbers, 5% from low rolling resistance tires, and 5% from aero wheels and you start looking at some real range.
     
  15. N4HHE

    N4HHE Member

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    Ditto. There is no more energy to recover from the suspension than what the existing shock absorbers generate as heat.
     
  16. Raffy.Roma

    Raffy.Roma Active Member

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    + 1
     
  17. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    Yup, an off-road racing vehicle would get the most benefit.
     
  18. Nubo

    Nubo Test Mule

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    Impressive demo. They must have generated about 5 watt-seconds.:wink:
     
  19. Kitt

    Kitt Member

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    #19 Kitt, Apr 22, 2014
    Last edited: Apr 22, 2014
    Actually i think this is a great idea. I am a cyclist and every wave in the floor significantly reduces my forward force. Would love to have that in my racing bicycle. haha
    It reduces my speed to about 5% i would say.
    You could design those things very light. tiny linear generator or so.
    But i wouldnt say more than 10% increase. But certainly worth it IMO. Those things last forever. Perhaps for the model gen 6. Now try to reduce the expense.
    definitely a future tech.
    how long do you think the tesla s motor will last?
    e-motors last for 30,000 hours and more. now calculate: 1 hr per day, 350 hr/year-> 35000 hrs= 100years. :scared:
     

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