The production version of the Mercedes-AMG is celebrating its world premiere. The two-seater super sports car brings the world's most modern and efficient Formula 1 hybrid drive technology from the racetrack to the road for the first time. The performance hybrid produces a total output of 782 kW (1063 hp) from one combustion engine and four electric motors, with a top speed capped at 352 km/h. The extremely complex development was carried out in close cooperation with the Formula 1 experts at Mercedes-AMG High Performance Powertrains in Brixworth.
The unique hypercar inspires not only with its E PERFORMANCE Formula 1 hybrid drive, but also with further motorsport technology. This ranges from the carbon-fibre monocoque and carbon-fibre body to the load‑bearing engine/transmission unit, active aerodynamics and the push-rod suspension. With its complex technology, the two-seater Mercedes-AMG ONE offers even more than a Formula 1 racing car in some cases. It features the AMG Performance 4MATIC+ fully variable all-wheel drive with hybrid-driven rear axle and electrically driven front axle with torque vectoring. It can also drive purely electrically.
"With the Mercedes-AMG ONE, we have more than pushed the envelope. The immense technical challenges of making a modern Formula 1 powertrain suitable for everyday road use have undoubtedly pushed us to our limits. Over the duration of the development period, many may have thought that the project would be impossible to implement. Nevertheless, the teams in Affalterbach and the UK never gave up and believed in themselves. ", says Philipp Schiemer, Chairman of the Board of Management of Mercedes-AMG GmbH.
The 1.6-litre V6 hybrid petrol engine with electrically assisted single-turbocharging corresponds in its technology to the current Formula 1 power unit. The four overhead camshafts are driven by spur gears. To achieve high engine speeds, the mechanical valve springs have been replaced by pneumatic valve springs. The engine, mounted in mid-engine position in front of the rear axle, revs up to 11,000 rpm. However, for longer durability and the use of commercial super plus petrol, it deliberately stays below the F1 rev limit.
The high-revving power unit is boosted by a high-tech turbocharger. The exhaust gas turbine and compressor turbine are positioned at a distance from each other and connected by a shaft. This allows a lower installation position for the turbocharger. On the shaft is an approx. 90 kW electric motor. Electronically controlled, this drives the turbocharger shaft directly, accelerating the compressor wheel up to 100,000 rpm before the exhaust gas flow takes over. The Formula 1 designation for this unit is MGU-H (Motor Generator Unit Heat).
The electric exhaust gas turbocharger in the Mercedes-AMG ONE has yet another advantage: it uses part of the surplus energy from the exhaust gas flow to generate electrical energy as a generator. This is either stored in the high-voltage lithium-ion battery or fed to the electric front axle or the electric motor (MGU-K = Motor Generator Unit Kinetic) on the combustion engine. The MGU-K has an output of 120 kW, is positioned directly on the combustion engine and is connected to the crankshaft via a spur gear system - another technology that ensures maximum efficiency and performance in Formula 1.
Turbocharging and direct injection with spray-guided combustion not only enable high power output, but also increase thermodynamic efficiency, thus reducing fuel consumption and exhaust emissions. The high‑performance six-cylinder engine has two injection systems. Direct injection delivers the fuel into the combustion chambers at up to 270 bar pressure. This is a multiple process at times, and is controlled by the engine management system as required. The additional port injection is needed to achieve the high specific power of the engine and at the same time comply with the exhaust emission limits.
Added to this is the very complex and effective exhaust gas cleaning system with four preheated metal catalytic converters, two ceramic catalytic converters and two petrol particulate filters. The four heating elements with a combined output of 16 kW make it possible to comply with the EU6 exhaust emission limits under real driving conditions (RDE). The exhaust gas cleaning system is also backpressure-optimised to avoid power losses. This also applies to the large rear silencer made of lightweight titanium.
New all-wheel drive with purely electrically driven front axle
The two 120 kW electric motors on the front axle reach rotor speeds of up to 50,000 rpm. They are each connected to the front wheels via a reduction gear. The front axle, which is thus driven purely electrically, operates wheel-selectively in each case and thus enables individual torque distribution for particularly high driving dynamics ("torque vectoring"). In addition, the two electric motors also allow the braking energy to be optimally used for recuperation - up to 80 percent under everyday driving conditions.
High Performance Battery with Formula 1 technology
The lithium-ion energy storage system is also a special Mercedes-AMG development. Its technology has already proven itself in the Mercedes-AMG Petronas F1 Team's Formula 1 hybrid racing cars under the toughest conditions and can also be found in the battery of the Mercedes-AMG GT 63 S E PERFORMANCE. The AMG High Performance Battery combines high power that can be called up frequently in succession with low weight to increase overall performance. Added to this are the fast energy draw and the high power density. This means that during a brisk drive in hilly terrain, for example, drivers can immediately call on the full power potential on uphill stretches, while recuperation is strong when driving downhill.
The arrangement of the battery cells and the cell cooling mirror the Mercedes-AMG Formula 1 racing car. For everyday use, however, their number is many times greater in the Mercedes-AMG ONE. The capacity of 8.4 kWh is sufficient for a purely electric range of 18.1 kilometres. Charging is via alternating current and the integrated 3.7 kW on-board charger. In addition, the battery can be supplied with fresh energy via recuperation or from the combustion engine. The lithium-ion, high-voltage battery and the DC/DC converter supporting and charging the 12 V onboard electrical system are accommodated in space-saving configuration in the vehicle floor behind the front axle.
Intelligent operating strategies for optimum output and efficiency
All in all, the High Performance Plug-in Hybrid Drive System offers numerous intelligent operating strategies that are optimally adapted to different application scenarios. The drive programs range from purely electric operation to a highly dynamic mode (Strat 2), which corresponds to a setting used in Formula 1 qualifying for the best possible lap times. Despite the high system complexity, the driver will always receive the optimal combination of performance and efficiency - depending on the current requirement.
Multi-link suspension with innovative push-rod suspension
The basis for the outstanding driving characteristics of the Mercedes-AMG ONE is the lightweight and high‑strength carbon-fibre monocoque, the technology of which also originates from Formula 1. The same applies to integration of the engine and transmission: both fulfil load-bearing functions and completely support the rear suspension.
The chassis is an aluminium construction at the front and rear, each with five links and two adjustable suspension struts. The coil-over suspension has several special features: both push-rod spring struts have been installed across the direction of travel. The innovative arrangement of the spring and damper unit replaces the function and use of a conventional tubular cross stabiliser. This solution reliably prevents rolling movements, even during very rapid directional changes, without being uncomfortable. Roll stiffness and roll damping are completely independent of lift stiffness and lift damping. Wheel bearings with ceramic ball bearings for less friction reflect the attention to technical detail.
A special, weight-optimised AMG carbon-fibre ceramic high-performance composite brake system is used for deceleration. The front axle sports 6-piston fixed callipers and also internally ventilated and perforated brake discs measuring 398 x 38 millimetres. The rear axle is fitted with 4-piston fixed callipers. In addition, it has internally ventilated and perforated brake discs measuring 380 x 34 millimetres. The low weight of the system reduces the unsprung masses and thus increases driving dynamics and agility. Furthermore, the ceramic brake features a longer service life, higher corrosion resistance and higher thermal stability. The "AMG Carbon Ceramic" lettering and the specially painted brake callipers visually distinguish this unique brake system.
