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View Diary: iPod COOL energy 1: Transportation (103 comments)

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  •  Hydraulic hybrid trucks are way cooler than IPods (3+ / 0-)
    Recommended by:
    OLinda, highacidity, A Siegel

    Twice the regenerative efficiency. 72%. Accumulator tank, nitrogen over hydraulic valves back and forth.

    Decelerating, pump/motor on drive shaft compresses nitrogen. Accelerating, pump/motor helps motor through sprag clutch.

    In production. Perfect for cities. The only real advantage of a hybrid is recycling deceleration energy.

    Listen Before You Talk.

    by ormondotvos on Wed Feb 28, 2007 at 02:01:16 PM PST

    •  Definitely value the major trucks ... (3+ / 0-)
      Recommended by:
      OLinda, highacidity, KiaRioGrl79

      For example, see my blogging of the Swedish Energy Agency's awarding of a contract to Saab for hybrid-refuse trucks in Squealing brakes to power at 5:45 am ....

      Once a week, my alarm clock is truly unnecessary ... the rumblings of the trash truck, with the loud squealing of braking with the roar of acceleration between driveways, ensure that I won’t sleep late that morning.  For awhile, I’ve been wondering why hybrid technologies aren’t making into those garbage trucks. While regenerative braking would hopefully cut down on the noise, at least I would be woken up by the ‘glorious sound of energy efficiency in the morning’.  Bit by bit, that hoped-for day is approaching.

      Now, the 72% figure I hadn't heard before.  Educate me ...

      Blogging regularly at Ecotality Blog for a Sustainable Future.

      by A Siegel on Wed Feb 28, 2007 at 02:08:38 PM PST

      [ Parent ]

    •  Mea culpa ... (1+ / 0-)
      Recommended by:
      highacidity

      I didn't react to the "hydraulic" portion of your comment.  Every so often, basically over at Green Car Congress, I see a discussion of hydraulic systems for trucks (air or liquid).  Seems like a very worthwhile approach -- especially for vehicles like trash trucks, school buses, etc that have basically a defined distance to cover, with known requirements for lots of starts/stops.  

      Blogging regularly at Ecotality Blog for a Sustainable Future.

      by A Siegel on Wed Feb 28, 2007 at 02:26:33 PM PST

      [ Parent ]

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