Cosworth RA
Cosworth RA | |
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Overview | |
kW) at 10,500 rpm | |
Torque output | 546 lb⋅ft (740 N⋅m) at 7,000 rpm |
Dimensions | |
Dry weight | 206 kg (454.2 lb) |
The RA is a 6.5-litre,
Background and development
Aston Martin and Red Bull Advanced Technologies teamed up to blueprint an all-new hypercar, and needed to rely on a technological partner able to challenge the norm, and redefine parameters while performing against an incredible brief. According to Cosworth, it is intended to be "evoking the spine-tingling, ultra-high-revving F1 engines of the 1990s, but benefitting from two decades of progress in design, material and manufacturing expertise." Red Bull’s Chief Technical Officer, Adrian Newey, specially delivered his brief to Cosworth, with the aim being to build the ultimate internal combustion engine. Cosworth's aim was to create the most powerful naturally-aspirated road engine ever, while meeting strict and often conflicting requirements in terms of durability, weight, emissions regulations.
Cosworth initially developed a 1.6-litre
Over 1,300 individual parts were manufactured for the Valkyrie's engine, with a total of 5,000 components making up the total product. Cosworth constructs all major components for every engine at their headquarters, including cylinder heads, cylinder block,
Cosworth's focus on continual optimisation is apparent with the billet-manufactured crankshaft. Beginning life as a solid steel bar; 170 mm (6.7 in.) diameter and 775 mm (30.5 in.) long, it is first roughed-out, finish-machined, heat-treated, gear-ground, plasma-nitrided, final-ground, and super-finished. From start to finish, 80% of the initial bar was machined away, leaving a crankshaft that’s half the weight of that utilised in the Aston Martin One-77’s engine.
With a KERS-style boost system akin to those fitted to F1 cars, the Aston Martin Valkyrie’s hybrid system has been developed by two main technical partners; Integral Powertrain Ltd, who supplied the bespoke electric motor, and Rimac for the lightweight hybrid battery system.[3][4]
As a result, the full hybrid system contributes an additional 160 bhp of power and a further 280 N⋅m of available torque with the certified max power output of Aston Martin Valkyrie standing at 1,160 hp (865 kW; 1,176 PS) @ 10,500 rpm. Equally, with the full hybrid system, peak torque will stand at 900 N⋅m (664 lb⋅ft) @ 6,000 rpm.
Variants
A more powerful, track-only, racing version of the RA engine will also be produced, and is set to be used in a racing-focused variant of the Valkyrie, called the Valkyrie AMR Pro. The AMR Pro uses the same 6.5-litre naturally-aspirated V12 engine as used in the Valkyrie road car, but this time without the KERS system. The engine will also be modified, which means the AMR Pro will have up to 1,100 (est. 1,160-1,300) horsepower; more than its standard road-legal counterpart.
Applications
References
- ^ "Aston Martin Valkyrie V12 turns the hypercar engine up to 11,100".
- ^ "Hypercar Engines: Aston Martin Valkyrie V12". 12 December 2018. Archived from the original on 7 December 2021. Retrieved 5 October 2021.
- ^ "ASTON MARTIN VALKYRIE - THE ULTIMATE HYBRID POWERTRAIN FOR THE ULTIMATE HYPERCAR". media.astonmartin.com.
- ^ "Aston Martin Valkyrie - The Ultimate Hybrid Powertrain for the Ultimate Hypercar". 1 March 2019.