At last week’s Geneva Motor Show, Ferrari announced that its two newest cars, the 458 Italia and the FF shooting brake, would be equipped with High Emotion Low Emissions (HELE) technology. Like every other automaker doing business in Europe, Ferrari will have to address pending CO2 emissions limits. Even though its fleet will be averaged with the much more efficient mainstream Fiat lineup, Ferrari still needs to slash its emissions.
To that end Ferrari is following a similar path to Porsche and adding automatic stop-start capability to both models, at least for Europe. Unlike the current EPA tests, the European test cycle actually includes full stops and starts, thus showing the benefit of stop-start with a 15 percent reduction in CO2 emissions. The FF is rated at 360 g/km for CO2 while the 458 is down to a “mere” 275 g/km.
Of course, this technology only provides a benefit in urban driving. Take one of these Ferraris out on the open road and you can easily consume almost as much fuel as ever, especially in the 660 horsepower FF.
That’s not to say there aren’t any improvements elsewhere in the FF. Like the 458 and California, the 6.3-liter V12 is now equipped with direct fuel injection for both a power and efficiency boost. The charge cooling effect of spraying the fuel directly into the combustion chamber allows the FF’s engine to run reliably with a 12.3:1 compression ratio. The FF is also the first V12 Ferrari equipped with a dual clutch gearbox for very fast automatic shifts without the losses inherent in a torque converter automatic.
Ferrari has also concocted a rather novel four wheel drive system for the FF that is claimed to weigh only half as much as a typical system. Rather than a complex transfer case to split the torque between the front and rear axles, the 4RM system actually consists of two independent gearboxes. The 7-speed DCT transaxle is mounted at the rear axle to balance the mass.
A second two-speed gearbox hangs off the front end of the crankshaft exclusively to send up to 20 percent of the engine torque to the front wheels. The gearing of the two ratios spans the range of the four lower gears in the 7-speed. At higher speeds, the reduced mechanical advantage means that all of the torque can go to the rear wheels with ease.
Since the introduction of Acura’s Super Handling-All Wheel Drive several years back a number of automakers have incorporated torque vectoring to actively distribute the propulsive effort for better handling. All of those systems only worked on the rear axles, typically sending more torque to the outside rear wheel, thus increasing the yaw moment and helping to counter understeer. Another unique element of the 4RM system is a pair of electronically controlled multi-plate clutch units on the front gearbox which enables torque vectoring for all four wheels. All told, 4RM only adds 90 pounds to the FF which still leaves it at rather chunky 4,144 pounds.
Ferrari hasn’t yet given any indication when the HELE package will be offered on US market models but we wouldn’t be surprised if it happens sooner rather than later.