During the 2009 North American International Auto Show I had the opportunity to chat up some engineers and get a deeper dive on the technology that helps Jaguar’s new supercharged 5.0-liter V-8 develop its astonishing 510 horsepower and 461 pound-feet of torque.
First and foremost there’s the Eaton Twin-Vortices Series compressor, which is identical in concept to the ones pressurizing the Corvette ZR1 and Cadillac CTS-v, using four-lobe screws with considerably more twist in them than most of the old three-lobe blowers had. The design is 20 percent more efficient, and a redesigned air intake resulting in a more direct airflow path reduces flow losses by 30 percent. As a result, this supercharger consumes less energy to produce 510 hp than the existing engine uses to produce 416, and virtually delivers the efficiency of a turbocharger without the lag. Pressurized air flows out through a pair of intercoolers, each of which can remove 28 BTUs’ worth of heat per second.
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