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462013 Pagani Huayra [w/video]

The Most Lovingly Built Exotic on Earth

61Flywheel hybrid test vehicle nets 22.4% improvement in fuel economy

Improvements in fuel economy of up to 22.4 percent on the ARTEMIS test cycle (pdf), which represents typical real-world usage, have been demonstrated by a research vehicle fitted with a flywheel hybrid system that includes stop-start technology.

11Report: Xtrac develops cheaper gearbox that behaves like dual-clutch

Dual-clutch transmissions are the current Holy Grail when it comes to transferring horsepower from underhood to the wheels of the car. Nearly every automaker that does serious business around the world offers dual-clutchers, and the ones that don't very likely soon will.

33Report: Xtrac develops cheaper gearbox that behaves like dual-clutch

Dual-clutch transmissions are the current Holy Grail when it comes to transferring underhood power to the wheels of the car. Nearly every automaker that does serious business around the world offers DCTs, and the ones that don't very likely soon will.

11More details about the flywheel 'kinetic energy recovery system'

Do your remember the hybrid system that stores braking energy not as electricity but in a rotating flywheel as kinetic energy? Well, the system is going to be mated to a special CVT transmission able to change 6-to-1 ratio within one revolution. That is, in 50 ms, the transmission can go to almost zero to full power.

6New hybrid transmission for Formula One cars revealed

For the past several years the governing body of Formula One racing has been pondering rule changes that would, among other things, make the sport more environmentally friendly. One of the proposals that has popped up several times is using hybrid drivetrains. Transmission builders Torotrak and Xtrac have agreed to a license agreement that will let Xtrac build continuously variable transmissions based on Torotraks design for Formula One hybrid drive systems.

AddXtrac combines with Zytek to form powertrain to meet the Ultra Low Carbon Car Challenge

Xtrac, the company that brought us the transmission for the JCB Dieselmax land speed record, will be showing off a new hybrid powertrain transmission at the Autosport International Show at the Birmingham NEC in the U.K. The show runs today and tomorrow.

AddMotorsport Engineering Conference checks out the greener side of racing

Over in Dearborn, Michigan today, the Motorsport Engineering Conference got started. It continues through Thursday. This conference, by the US Society of Automotive Engineers, includes panel discussions on "Motorsports in the Fifties: Tragedy and Response" and "Wind Tunnel Capabilities and Research." All very well and good for those engineers. For those of use interested in green news, there's plenty of interesting panels and papers to come. How about "Partnering in Alternate Fuels" and the "Gre

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