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    FERRARI DEVELOP "INSERTABLE" FOUR WHEEL DRIVE

    http://www.italiaspeed.com/2006/cars/ferrari/10/4x4/1010.html

    Could it be the the perfect 4x4 system?


    Re: FERRARI DEVELOP "INSERTABLE" FOUR WHEEL DRIVE

    So whats the diference with an electronic diferential AWD? such as the one the 997TT already has, and was first introduced in a street car by Porsche with the 959. It has a diferential in the centre made up of interlocking clutch plates, that are controlled electronically, based upon the different sensors in the car that judge the vehicle's dinamics and need for torque to be transmited to the front wheels or not, the clucthes in the differential engage or not. Hence have RWD normally and electronically implementing AWD when you need it.


    " Ferrari's new insertable four-wheel drive system is based on the traditional RWD layout, where the main driving wheels are constantly connected to the engine via the usual gearbox and clutch arrangement. The second pair of wheels are selectively connected via their new insertable transmission system.
    ... The insertable transmission system also transfers motive torque to the front wheels when a difference between the rotation speed of the front and rear wheels occurs; ie, essentially when the driving wheels slip".
    ... Technically, the secondary clutch, which controls the provision of torque to the front wheels, is controlled by an electronic control unit."

    They call the center diferential the insertable transmision, which consists of an electronically controled clutch. To me this is just an electronic diferential system with a fancy name to sound new and original


    With the amount of power these cars nowadays are having I think its a great idea, besides this type of AWD system would be the one that would respect the RWD handling characteristics better than anyother AWD system I would think, something I think is important for Ferrari buyers.

    Re: FERRARI DEVELOP "INSERTABLE" FOUR WHEEL DRIVE

    I think the advantage of the Ferrari system over the Porsche system is that the driver can turn off the FWD whenever he wants. Of course Audi had a system where you could select on the dashboard either AWD, FWD, or RWD over 20 years ago...

    Re: FERRARI DEVELOP "INSERTABLE" FOUR WHEEL DRIVE

    The Impreza can do that I think, it uses electronic diferentials as well, and you have a button on the dash in which you can select the setting of the center diferential from more RWD to more AWD.

    Re: FERRARI DEVELOP "INSERTABLE" FOUR WHEEL DRIVE

    Quote:
    Carlos from Spain said:
    The Impreza can do that I think, it uses electronic diferentials as well, and you have a button on the dash in which you can select the setting of the center diferential from more RWD to more AWD.


    I know the Subaru STi can select the torque-split, but you cannot set it to 100% rear. I think maximum is 67% or so...

    Re: FERRARI DEVELOP "INSERTABLE" FOUR WHEEL DRIVE

    I think that the Subaru doesnt have electronic diferencials , Mitsubishi has .

    Re: FERRARI DEVELOP "INSERTABLE" FOUR WHEEL DRIVE

    Quote:
    rosso nuvola said:
    I think that the Subaru doesnt have electronic diferencials , Mitsubishi has .



    Yes, they both do.

     
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