Aston Martin’s Valkyrie hypercar is confirmed to produce a staggering 1160bhp from its petrol-electric hybrid powertrain.
The output figure includes 1000bhp from a Cosworth-developed naturally aspirated 6.5-litre V12 at a dizzying 10,500rpm, and 546lb ft at 7000rpm. An electric motor developed by Rimac and Integral Powertrain Ltd produces 160bhp and 207lb ft.
Peak combined outputs of the system are confirmed to be 1160bhp at 10,500rpm and 664lb ft at 6000rpm.
Autocar recently visited Cosworth’s base in Northampton during durability testing for the petrol engine, touted as the ultimate 12-cylinder motor. We got a chance to see it perform on a dynometer, which was simulating repeated laps of the Silverstone circuit.
Cosworth has designed the engine and will build the 150 units that will be fitted to road-going Valkyries, plus around 25 track-only AMR Pro versions.
Cosworth managing director Bruce Wood confirmed the 1000hp target was agreed well before the first prototype was built, and that the V12 is set to serve as a structural component. As in a race car, it will be bolted directly to the Valkyrie's tub and have the gearbox and rear suspension hung from it. The drive gears for the camshafts are located at the rear, in an effort to insulate the cabin from some of the noise they make at high revs.
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The engine also uses port fuel injection rather than direct injection, allowing it to meet emissions standards without the need to use heavy gasoline particulate filters. Wood says the fully dressed engine weighs just 204kg, but he is equally proud of the fact that it has been designed for a 100,000km (62,000-mile) lifespan based on no more than routine maintenance.