When Porsche first unveiled the new 911 GTS, it's safe to say that there weren't many people on planet Earth pining for a hybrid 911. The idea of one of the world's most iconic sports cars taking a cue from the humble Toyota Prius is a concept that's a little hard for the average auto enthusiast to get their head around.
But they should try, because the technology that Porsche has deployed in the new 911 GTS, Porsche's first hybrid sports car, is properly impressive. This is a hybrid system that exists not to improve fuel consumption, but to genuinely make a sports car better thanks to the injection of a little high voltage and a lot of boost.
Tech meets tradition
The 911 has maintained its stubborn rear-engined layout since the beginning. Its motor is slung between and behind the back wheels, not because it's necessarily the best place for handling, but just because that's how it's always been done. That doesn't change with the 911 GTS. What is new, though, is the addition of an electric motor into the mix, augmenting that gasoline engine in the way-back. That new motor sits neatly inside the eight-speed dual-clutch transmission, adding 54 horsepower and 29 pound-feet of torque.
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Those numbers are hardly remarkable, but the real magic is what else the car does with its new high-voltage system. There's actually a second electric motor here, a tiny one capable of surviving ridiculously hot temperatures. That's needed because it lives within the turbocharger.
A turbocharger is a simple wheel that is spun by exhaust gas. This in turn spins another wheel that forces air into the engine's intake. It's a simple technology developed well over 100 years ago, but since those early days of forced induction, there's always been an issue when it comes to automotive applications: lag. The reliance of exhaust gases to spin the turbocharger creates an intrinsic delay between the driver requesting acceleration and the car actually delivering it. Internal combustion needs to build pressure to spin the wheel to suck in more air to provide more power.
Porsche short-circuited that with this novel electric motor that spins the turbocharger up to 120,000 RPM in less than a second. Lag isn't completely eliminated, but it's so radically reduced that you hardly know it. Pair that with the extra, instant kick of torque provided by the electric motor in the transmission, and you have something magical: a car powered by gasoline that accelerates with all the instant ferocity of an EV.
Design sensibility
Tim Stevens for Engadget
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