Lamborghini has announced that its Aventador supercar will now feature cylinder deactivation and stop/start technology, confirming previous reports of the Italian automaker's intent to improve the fuel efficiency of its products.

The centerpiece of its fuel-saving efforts is a combination of cylinder deactivation and stop/start technology – the latter Lamborghini claims is faster than other forms of the technology. For its stop/start system, the Aventador uses high-powered capacitors, which it calls supercaps, and provides the energy to restart the 700-horsepower V12 in a "barely detectable" 180 milliseconds. According to Lamborghini, this system saves three kilograms (6.6 pounds), though it is not said what that savings is compared to. A conventional battery is used for the vehicle's electronic systems and is claimed to last "virtually the entire vehicle life."

The second piece is Lambo's Cylinder Deactivation System. This system shuts down one bank of the V12, alowing the Aventador to run as a straight-six when cruising at speeds under 84 miles per hour. When the driver applies the accelerator, the system re-engages all cylinders.

Lamborghini claims a 20-percent reduction in fuel consumption and emissions when driving at 80 mph. Overall average fuel economy is said to drop by as much as seven percent. How these figures translate into improvements in the EPA cycle, which currently estimates the Aventador at 11 miles per gallon city, 18 highway, has yet to be seen.
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News for the Lamborghini Aventador LP 700-4: More efficiency with cylinder deactivation and innovative stop-start system

Sant'Agata Bolognese, September 27th, 2012. The Lamborghini Aventador LP 700-4 is extending its leading position among super sports cars with groundbreaking technologies – an innovative and extremely fast stop-start system with supercaps for energy storage and cylinder deactivation under partial load bring significant savings in fuel consumption. Plus, the 2013 Aventador comes with a host of new individualization options.

Automobili Lamborghini is using a highly advanced and utterly unique technology for its new stop-start system in the Aventador. The energy for re- start following a stop phase (e.g. at a traffic light) is delivered by high- performance capacitors known as supercaps. They enable extremely fast start-up – full V12 power is available again in a barely detectable 180 milliseconds, significantly faster than with conventional systems. And, in keeping with Lamborghini's lightweight design philosophy, this new technology also delivers a weight saving of three kilograms. The classic vehicle battery supplies only the electronic systems, occupies very little space and lasts virtually the entire vehicle life.

The second new efficiency technology is the Cylinder Deactivation System (CDS). Under low load and at speeds of less than 135 km/h, the CDS deactivates one cylinder bank, allowing the power unit to run as an inline six. But with just the slightest movement of the gas pedal, the extreme performance of the V12 engine with its 515 kW/700 hp is back online. The CDS and the stop-start system work incredibly quickly, are virtually imperceptible to the driver and have absolutely no negative impact on the amazing driving experience. Yet, they deliver a noticeable benefit in efficiency – the average fuel consumption of the Aventador LP 700-4 drops by seven percent to 16 liters/100km. At highway speeds of around 130 km/h the reduction in consumption and emissions is as much as 20 percent. In total the CO2 emissions of the Aventador have been reduced from 398 g/km to 370 g/km.

The Aventador's chassis setup has also been further refined. The razor-sharp handling is now even more precise, while ride comfort has been noticeably improved with stiffer springs and optimized dampers. New forged alloy wheels in the Dione design are now also available.
Carbon fiber is a lightweight material that features extensively in the Aventador. A substantial proportion of the super sports car's technological superiority is thanks to its CFRP monocoque. This material now takes on an even higher profile with a package of optional CFRP components – front spoiler, air intakes, engine cover panel, powertrain cladding and interior applications in CFRP set accents in the Aventador's unique design.