Ferrari develop "insertable" four wheel drive

Discussion in 'European Cars' started by naranhito, Oct 11, 2006.

  1. #1 naranhito, Oct 11, 2006
    Last edited by a moderator: Apr 25, 2016
    Ferrari have developed a new optional four-wheel drive system, dubbed as "insertable 4x4", which is designed to maximise the performance capability of their sports cars under all conditions. This latest project follows on from an 'adaptable' four-wheel drive system that was developed in Maranello last year and clearly demonstrates again that Ferrari are looking very closely at this form of traction.

    The new insertable four-wheel system seeks to remove the disadvantages of a permanent four-wheel drive arrangement, particularly the loss of engine torque associated with it, by using a system that can be taken out of the equation as required. However Ferrari's engineers have worked hard to remove the obstacles in the way of an optional four-wheel drive system and create a set-up "which is easy and cost effective to implement, free from the drawbacks described above and which at the same time allows for an increase in performance, stability and traction control in all grip conditions."

    "Currently, a sporty, high performance car presents rear wheel drive and is provided with a self-locking differential aiming at maximising motive torque transmitted by the rear wheels to the road surface in all conditions," say Ferrari. "Rear wheel drive with self-locking differential is a premium for sporty driving in either optimal grip conditions (dry road) or reasonable grip conditions (wet road); however, such a solution in combination with a high motive torque and large-sized tyres entails very difficult and potentially dangerous driving in poor grip conditions (flooded or icy road).

    "The use of permanent or insertable for wheel drive has been proposed in order to improve the driveability of a sports car in poor grip conditions. Whilst permanent four wheel drive considerably improves the behaviour of motor vehicles in poor grip conditions, it presents the drawback of increasing loss of torque in the transmission system and conferring to the car a behaviour in optimal grip conditions which is not always appreciated by drivers.


    "Insertable four wheel drive allows the driver to decide whether to use rear-wheel drive or four-wheel drive; in this way, the drive may use rear-wheel drive in optimal grip conditions and four-wheel drive in poor grip conditions. However, insertable four-wheel drive is typically complex and costly to manufacture; furthermore, the driver may not realise the presence of sheets of ice on the road and may not therefore engage four-wheel drive in a timely manner.

    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 presents a second clutch, which on one end is connected with fixed transmission ratios to the crankshaft upstream of the gearbox and on the other is connected with fixed transmission ratios to the secondary driving wheels," say Ferrari. 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. Factors such as the vehicle's "longitudinal speed", "longitudinal acceleration", "transversal acceleration", and accelerator pedal position and movement characteristics, are taken into account as input for the the electronic control unit. The electronic control system has also been engineered to include memory units, called "maps", where parameters describing the vehicle's dynamic characteristics can be stored, each of them optimised for different grip conditions.

    Ferrari's new insertable four-wheel-drive system, which has been road-tested, can both be used for their usual mid-engine cars, as well as the front-engine cars with transaxle layout.

    http://www.italiaspeed.com/2006/cars/ferrari/10/4x4/1010.html
     
  2. No doubt will be implemented in the F60.
     
  3. Who drives their Ferrari in a flood or when the roads could be icy? A lot of Ferrari drivers (unfortunately) put their Ferraris deep in the garage when it's even drizzling.
     
  4. The manettino in the F430 has an option for snow. They should work to improve their traction control system rather than build a whole new 4WD thing. Who the hell drives a Ferrari at full blast on the snow?
     
  5. I've done it a couple times. its actually quite fun.
     
  6. #6 Variant, Oct 11, 2006
    Last edited by a moderator: Apr 25, 2016
    Sounds heavy, expensive, and complicated. I've always fancied the idea of a regenerative/pump charged hydraulic setup similar to Ford's Tonka concept or the Yamaha's 2WD Dakar motorcycle. Done properly (with ultra-efficient integrated pump/drive design and composite accumulator tanks) it might be an interesting alternative to traditional 4WD systems or battery-electic hybrid regenerative setups.
     
  7. I remember reading this like an year ago, here.
     
  8. yeah, it even came with a sketch
     
  9. Ferrari is a little late in the game IMO
     
  10. Uhm no.
     
  11. It is not about being able to drive in the snow, it is about being able to put down large amounts of power to the ground. With power rising so much, they need to be able to actually use it.
     
  12. They should have a switch or lever to engage/disengage the 4 wheel drive (like almost every 4WD vehicle since 1902)
     
  13. You win
     
  14. It is lame for Ferrari. If the Grand Prix car does not need AWD, why put heavy AWD in road car.
     
  15. ^ because a grand prix car makes tons of downforce.
     
  16. The GP car doesn't need AWD because it's simply too heavy. Oh, and it might just be forbidden too.
     
  17. Bah. It'll be heavy no maytter what, and that eliminated the sporty edge it might give. And knowing ferrari, it'll be complicated and prone to break. Plent of manufacturers have made AWD systems that vary the amount of torque. BMW and Porsche run a system that is pretty much RWD until it needs to be AWD or actually any wheel drive that is actually gripping and then any level of that drive from 0 to 100%. Really, it's awesome cool tech, but it's not ferrari revolutionary, they are late to the tech, they don't need it, and if they want it, frankly they should get it from someone else.
     
  18. Not really. The Ferrari 408 of 1988 was 4wd. It remained a prototype though.

    Ferraris are not meant to be 4wd, but now they have to have the option because the succeser of the Enzo must be a Veyron beater...
     
  19. Bam drove a freakin' 360 Spyder through a snowstorm in the alps in the Viva La Europe episode, you should have seen him try to get that car off the ice & down the mountain. Ferraris & ice do not mix, obviously.
     
  20. OMG four wheel drive isn't pure !
     
  21. me too, except if someone bumped it

    I'm against this "insertable" four wheel drive BS.
     
  22. Enzo isn't the F60 ?
     
  23. I dare to say that the Enzo is the Enzo.
     
  24. mmmmhhh I'm not sure about it
     

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