Even supercars are feeling an impact from increasingly strict fuel efficiency standards. Lamborghini is adding cylinder-deactivation and start/stop technologies to the 2013 Aventador, Auto Motor und Sport is reporting.
While half of the Lamborghini V-12’s cylinders will shut down under certain circumstances to conserve fuel, under load the 6.5-liter engine will operate on all cylinders. The changeover is expected to take 180 milliseconds. General Motors uses the technology on vehicles like the Chevrolet Camaro SS with an automatic transmission and Chevrolet Silverado (with the 5.3-liter V-8) while Honda’s 3.5-liter V-6 and the Mercedes-Benz SLK55 also feature a version of the system.
Lamborghini will employ a capacitor instead of a battery to power the start/stop system, similar to Mazda’s iELOOP system. Benefits of a capacitor over a battery include lighter weight as well as the ability to be cycled more times than a battery and at a faster rate.
If executed well, the raging bull’s start/stop system could be smooth like the one in the new Porsche Boxster. During a recent drive in the 2012 Porsche 911 Carrera S, Georg Kacher said, "In the 911, part throttle is by no means a joyless anticlimax. Thanks to a variety of new fuel-saving techniques (including automatic stop/start), it is actually fun to squeeze extra miles out of the 16.9-gallon tank."