How Heavy Duty Series Hydraulic Hybrid Vehicles (HHVs) Work

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This video explains the basic mechanics of series hydraulic hybrid vehicle (HHV) technology. The layout displayed is for heavy duty vehicles such as refuse haulers, busses and delivery vehicles. To learn more about this and other green automotive technology visit EPA’s website http://www.epa.gov/otaq/technology
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GreenCarReports.com (http://www.greencarreports.com/) Editor John Voelcker walks you through five things you should know about hybrid vehicles

– what a hybrid is and how it works
– types of hybrid cars (mild hybrids vs full hybrids)
– different brands of hybrid cars
– how to drive a hybrid

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11 thoughts on “How Heavy Duty Series Hydraulic Hybrid Vehicles (HHVs) Work”

  1. The hydro pumps can be noisy like they are on lawn equipment. Loud buzzing noise heard especially under a heavy load

  2. The usefulness seems limited to very heavy fleet vehicles. The technology is too noisy and impractical for normal consumers.

    I think there are many competing technologies (electric, hydrogen, bio-diesel) for an already limited market of fleet vehicles.

    Lightning Hybrids in Colorado must have found a reasonable price point and a few customers with government grants to do some conversions. Pretty exciting!

  3. I remember seeing the prototypes at the EPA 11 years ago…apparently there are some problems with cost / benefit?

  4. I heard Ford and Chrysler might be working on passenger vehicles like minivans and trucks that could use this technology. Anybody know when we might see a model?

  5. I have a question please.. I replaced the companation screen for my prius 2005 an it keep burning out again I don't understand what is going on??

  6. He forgot the plug in hybrid vehicles. Plug in hybrid vehicles can go between 20 miles per charge to 65 miles per charge such as fusion energi and Chevy volt.

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