Ferrari details the new V12 hybrid drivetrain for the Enzo replacement
While it is only speculated that the new flagship supercar from Ferrari will be called the F70, the Italian sports car is expected to be powered by a V12 engine mated to an advanced version of the company’s Kinetic Energy Recovery System (KERS); with the total output running as high as 920 horsepower. Reports surfaced in February that the F70 would likely be powered by a naturally aspirated 7.3 liter V12 that churns out 800 horsepower while a new version of the KERS hybrid system tacks on an additional 120 horsepower for an output of 920 horsepower.
The video introduced today by Ferrari in unison with the opening day of the 2012 Beijing Motor Show offers a look at the KERS hybrid system that was introduced in 2010 compared to the new KERS version expected to arrive in the Ferrari F70. The main difference between the two systems is that this new version features a midship engine placement where the original concepts packing KERS help were front engine, rear wheel drive cars. The new KERS system displayed in the video below features a V12 mated to a 7-speed dual clutch transaxle that drives the rear wheels while the KERS assist motor is mounted to the back of the transaxle.
The new Ferrari V12 hybrid engine features a revised intake manifold and a multispark system that work together to improve power and efficiency while reducing emission levels. The KERS unit is mated to the rear of the transaxle while the hybrid power unit is mated directly over the axles; allowing this new system to decrease the overall emission output to a level 40% lower than a traditional combustion engine without a hybrid drive system. For comparison, the KERS system from 2010 only offer a 30% decrease in engine emissions compared to a gas engine with the same power output. In short, the new midship configuration shown in the video below is 33% more efficient than the original front engine KERS version that debuted a few years ago. Also, the basic physics of the mid-engine placement reduces drivetrain loss so more of the engine power makes it to the ground.
Ferrari goes so far as to show a dyno graph showing the output of a traditional combustion engine (presumably a non-hybrid V12) compared to the output of the new V12 HY-KERS 2012 engine. The hybrid drivetrain makes what looks to be a significant improvement in power across the rpm range but sadly, there are no numbers on the graph so we don’t know what kind of power this new hybrid drive system might make when it reaches the engine bay of a production car.