Getting a little lost when it comes to Ferrari’s new all-wheel drive system? Fear not, as the Italian automaker has released a video of its FF flagship with a detailed explanation on how all four wheels of the latest prancing horse are powered.
Ferrari’s 4RM – Italian shorthand for four-wheel drive – switches things up from the usual all-wheel drive setup; there is no transfer case for the transaxle and there is no prop shaft running to the front of the car. Instead, 4RM drives the front wheels of the FF directly from the crank itself, using a separate, two-speed gear box for the front axle similar to third and seventh gears on the transaxle. When the FF’s stability system detects a loss in traction, the computers selects the proper gear in the forward gearbox, and then manipulates an electronically controlled clutch pack between the crank and the gearbox. Doing this allows the system to vary the amount of slippage, and therefore, vary the power sent to the front wheels. It may be an unusual approach, but Ferrari says the system in 50 percent lighter than a traditional all-wheel drive setup.
No matter what amount of power is sent forward, the FF’s wheels are powered by a direct-injected, 6.2-liter V-12 making 660 horsepower. Power for the rear wheels is handled through a seven-speed, dual-clutch transmission, and the FF will achieve 0 to 62 mph in 3.7 seconds.
More of a visual learner? Worry not, as Ferrari’s video breaks everything down with graphics showing all the moving parts important to the 4RM system and how they work in concert together. Check out the video below.