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IMA

Discussion in 'Honda/Acura Hybrids and EVs' started by iaowings, May 29, 2006.

  1. iaowings

    iaowings New Member

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    Hey I was wondering what are the differences between the two types.
    I think that HSD would be better. I am curios though. I was unable to find much info at the Honda web site unlike the Toyota site. Honda only has a faq and that’s it.

    The reason I ask is that my friends are now interested in hybrids after I got my Prius and I am unable to answer questions about anything not Toyota.
     
    #1 iaowings, May 29, 2006
  2. john1701a

    john1701a Prius Guru

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    IMA is an "assist" hybrid. Basically, one electric motor is inserted between the gas engine and the transmission. They share the same shaft, resulting in a very simple design but restricting each component to operate at the identical RPM. It's electrical system can best be described as "passive"

    HSD is a "full" hybrid. It has two electric motors that interact with the gas engine through the use of a PSD (Power Split Device). This unique device provides for a dramatic range of flexibility, allowing each of the 3 power components to operate independently or in combination at any RPM. It's electrical system can best be described as "persistent".

    http://john1701a.com/prius/hybrid-type_assist.htm

    http://john1701a.com/prius/hybrid-type_full.htm
    http://john1701a.com/prius/hybrid-type_full_details.htm
    http://john1701a.com/prius/hybrid-type_full_operation.htm
     
    #2 john1701a, May 29, 2006
  3. iaowings

    iaowings New Member

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    Thank you.
    That is a large amount of info, will keep me busy for some time. I think I am going to print this out to show friends that way they can figure out what car they want. Personally, I like HSD.
     
    #3 iaowings, May 30, 2006
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