Zee09
$200 Site Donor 2023
Just saw one now. Had to look it up.
Wow from the rear it is *****....
Wow from the rear it is *****....
Ferrari GTC4LUSSO
- Thread starter Zee09
- Start date
Beauty is the eye of the beholder; Just sayin'.
The GTC4Lusso (and the FF, which preceded it) has one of the craziest AWD systems.
Power to the rear wheels is sent from the engine, via a driveshaft, to the rear transaxle just like a typical car.
Power to the front wheels comes directly off the front of the engine. There is a compact power take-off unit mounted to the front of the engine that's driven directly by the crankshaft. The PTU acts like a two-speed transmission, with one "low gear" approximating the ratio of 2nd and "high gear" approximating 4th. Each output to the wheel has a Haldex-style clutch to control power flow to the wheel. In this configuration, there is no need for a differential.
In operation, the AWD system only functions in 1st through 4th gear and only in certain driver mode settings. When the transmission is in 1st, the PTU is in low (which approximates the ratio of 2nd) and simply allows the output clutches to slip, which makes up for the ratio difference. When the transmission is in 2nd, the PTU remains in low and tightens up the clutch, eliminating the slip. 3rd and 4th operate the same way, except the PTU is in the higher gear.
The piece at the front of the engine with the clear cover showing the innards is the PTU. This is the only mechanical automotive AWD system where power to the front axle doesn't come from the output of the transmission.
Power to the rear wheels is sent from the engine, via a driveshaft, to the rear transaxle just like a typical car.
Power to the front wheels comes directly off the front of the engine. There is a compact power take-off unit mounted to the front of the engine that's driven directly by the crankshaft. The PTU acts like a two-speed transmission, with one "low gear" approximating the ratio of 2nd and "high gear" approximating 4th. Each output to the wheel has a Haldex-style clutch to control power flow to the wheel. In this configuration, there is no need for a differential.
In operation, the AWD system only functions in 1st through 4th gear and only in certain driver mode settings. When the transmission is in 1st, the PTU is in low (which approximates the ratio of 2nd) and simply allows the output clutches to slip, which makes up for the ratio difference. When the transmission is in 2nd, the PTU remains in low and tightens up the clutch, eliminating the slip. 3rd and 4th operate the same way, except the PTU is in the higher gear.
The piece at the front of the engine with the clear cover showing the innards is the PTU. This is the only mechanical automotive AWD system where power to the front axle doesn't come from the output of the transmission.
I like the front half of the car. 
I'm not sure what to think. On one hand, a car like a Jetta Wagon really is a practical ride, perfect for bags of mulch, a few pieces of sod, or the dog.
On the other hand, a silly-expensive supercar Ferrari will not likely be used in the manner of a Jetta Wagon, despite the promise that it could be.
I'd love such a car, and I'd probably take it on long trips. I'd load the back up with luggage and take off at my normal high rate of speed.
On the other hand, a silly-expensive supercar Ferrari will not likely be used in the manner of a Jetta Wagon, despite the promise that it could be.
I'd love such a car, and I'd probably take it on long trips. I'd load the back up with luggage and take off at my normal high rate of speed.
I like it...
But then again, I drive a Buick TourX
But then again, I drive a Buick TourX
Zee09
$200 Site Donor 2023
I did not know about the Buick until recently. I think you informed me of it. I like it too. Would be ideal for me.
Zee09
$200 Site Donor 2023
The hindquarters...
definitely mid-engine...I mean just look at the size of the frunk....
Similar threads
