Porsche 911 GT3 R Hybrid

Date:14 April 2010 Tags:,

The 911 GTR 3 racer has electrical front axle drive with two electric motors developing 60 kW each in addition to the supplements the rear-mounted 358 kW 4-litre flat-six. In a twist on the usual electric layout using a battery energy source, Porsche has opted for a flywheel power generator that sits next to the driver.

The flywheel rotor, spinning at up to 40 000 r/min, stores energy mechanically. It’s “charged” whenever the driver applies the brakes: the two electric motors then act as generators, piping up to 120 kW to the flywheel. A typical sequence would involve braking for a corner, charging the flywheel, followed by accelerating out of the corner, drawing extra power electromagnetically from the flywheel – using up the power reserves and at the same time slowing the rotor down. Advantages: extra power, less fuel. That could mean a smaller, lighter, fuel tank or less frequent pit stops.

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