THE NEW MERCEDES-AMG ONE: FORMULA 1 TECHNOLOGY FOR THE ROAD

Highly exclusive hypercar with E PERFORMANCE hybrid drive and system performance of more than 1000 hp

Affalterbach. AMG's foundation stone was laid back on 1st of June 1967. To mark the 55th anniversary of the performance and sports car brand, the production version of the Mercedes-AMG ONE (combined weighted fuel consumption: 8.7 l/100 km; combined weighted CO2 emissions: 198 g/km; combined weighted electrical consumption: 32 kWh/100 km) 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 race track 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. I have the highest respect for all those involved and am proud of this team achievement. To put such a hypercar on wheels is certainly unique. This applies to us as Mercedes-AMG not only from a technical point of view, but also in terms of the close exchange with our loyal customers. Together with us, they have gone through ups but also downs in the course of development. They were an integral part of Project One from the very beginning and can now look forward to the highly exclusive and unique Mercedes-AMG ONE, which has now also been able to clear the next hurdle and passed all ECE certification tests", says Philipp Schiemer, Chairman of the Board of Management of Mercedes-AMG GmbH.

"The performance data of the Mercedes-AMG ONE are ultimately only a small excerpt of what technology is in this vehicle. Apart from a Formula 1 powertrain that generates 1063 hp from a relatively small, highly efficient internal combustion engine in combination with four electric motors, the monumental task was above all the exhaust gas aftertreatment. The Mercedes-AMG and Mercedes-AMG High Performance Powertrains teams have really done a great job here. This project was partly a curse and a blessing at the same time. But we have walked the stony path, and as a technician you naturally get carried away with all the details. From the materials used, the exceptional chassis components to the aerodynamic refinements - in terms of complexity, the Mercedes-AMG ONE is hard to beat. In a Formula 1 car, a team of engineers with laptops makes sure that the powertrain starts. With our hypercar, all it takes is the push of a button. This also illustrates the immense software know-how that has gone into this vehicle", says Jochen Hermann, Technical Managing Director of Mercedes-AMG GmbH.

 

Exceptional E PERFORMANCE hybrid drive with 1.6-litre V6 engine and four electric motors

The E PERFORMANCE hybrid drive of the Mercedes-AMG ONE comes directly from Formula 1 and has been realised in close cooperation with the experts at Mercedes-AMG High Performance Powertrains in Brixworth. It consists of a highly integrated and intelligently networked unit comprising one hybrid, turbocharged combustion engine with a total of four electric motors. One has been integrated into the turbocharger, another has been installed directly on the combustion engine with a link to the crankcase and the two remaining motors drive the front wheels.

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).

Lightning-quick response, faster than a naturally aspirated V8 engine

The major advantage: the response improves significantly, immediately from idle speed (when the exhaust flow is still weak) across the entire rev range. The 1.6-litre V6 engine responds even more spontaneously to accelerator pedal commands, while the overall driving experience is highly dynamic. In addition, the electrification of the exhaust gas turbocharger enables higher torque at low engine speeds. This also increases agility and optimises acceleration. Even when the driver takes their foot off the accelerator or brakes, the technology is able to maintain boost pressure at all times. This ensures a continuously direct response.

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. This energy is stored in the battery and is available for a longer electric range or for more drive performance. Each electric motor is controlled by its own power electronics located in close proximity to the electric motors in the floor assembly.

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.

Six drive programs - from purely electric driving to race track mode

The Mercedes-AMG ONE starts silently at first by switching on the electric motors on the front axle. In parallel, the catalytic converters are preheated. The combustion engine will not start until the correct catalytic converter temperature is reached.

> Race Safe: standard program with on-demand hybrid driving mode and all-electric start-up. Only when higher power is required does the combustion engine switch on.

> Race: hybrid driving mode with special charging strategy. The combustion engine runs continuously and can charge the high-voltage battery more so that full electric power is always available.

> EV: all-electric driving.

> Race Plus (race track only): active aerodynamics, chassis lowering by 37 mm (front)/30 mm (rear), firmer chassis tuning, special performance management.

> Strat 2 (race track only): active aerodynamics, even firmer suspension tuning and vehicle lowering by 37 mm (front)/30 mm (rear). Full power from all motors as in Formula 1 qualifying.

> Individual: settings according to personal preferences for the road modes.

Impressive acceleration values are possible with the RACE START function in the Race, Race Plus and Strat 2 drive programs: the sprint from a standstill to 200 km/h is completed in just 7.0 seconds

Rear end: fascination and function

The sharp spoiler lip and the two-part rear diffuser bring aerodynamic efficiency and performance advantages at high speeds. This also applies to the specially shaped underbody with longitudinal fins and openings for cooling ducts. The rear wing is a two-piece retractable blade plus integrated adjustable flap. The design of the exhaust tailpipe with its large, round outlet and two further small, round apertures has been adopted directly from the Formula 1 cars. The muscular appearance is further enhanced by the rear apron with its large, black mesh and carbon-fibre components. The tail lights each feature three diamond-shaped lighting elements to echo the graphic design of the AMG brand logo, and therefore also the design of the headlamps.

The high-tech materials and colour combinations of the outer skin are transferred directly from racing. Functional exterior components are presented in exposed carbon fibre and contrasted with sculpturally sensual paint surfaces.

Active aerodynamics: three interpretations to choose from

The active, hydraulically controlled aerodynamics increase downforce on the front and rear axles and also improve aerodynamic efficiency. Depending on the driver's preference and the selected drive program, three different aerodynamic setups are available:

> "Highway" in the "Race Safe", "Race", "EV" and "Individual" drive programs:
the louvres are closed, the active flaps on the front diffuser are extended and the rear wing including flap is retracted.

> "Track" in the drive programs "Race Plus" and "Strat 2" (both only allowed on the race track): the front diffuser flaps fold up to shape the front diffuser contour to maximum efficiency. The rear wing extends fully, as does the rear wing flap. The louvres are opened to increase the downforce on the front axle and to increase the negative pressure in the wheel arches. The vehicle is lowered by 37 millimetres at the front axle and 30 millimetres at the rear axle. The consequence of all these measures: the total downforce increases up to five times compared with the road drive programs, depending on the speed.

> "Race DRS" (Drag Reduction System), can be activated at the touch of a button as in Formula 1, in the race track drive programs: the rear wing flap retracts completely and the louvres are closed. Although this reduces downforce by around 20 percent, the Mercedes-AMG ONE reaches high speeds even faster. DRS can be deactivated manually or is automatically deactivated as soon as the driver brakes or lateral acceleration is measured.

Interior: Formula 1 for two

The interior design concept follows function on the racetrack and is expressed in the radical design idiom. In this way, Formula 1 technology can be experienced authentically on the race track and on the road. Here, too, every detail has a function. "No styling" is the design consequence resulting from the requirements for this driving machine. The design is a synthesis of sculptural form language and uncompromising racing design. In the bold minimalism of the monocoque interior, the reduced components are emphasised and showcased in terms of design and function.

The ergonomically contoured interior has room for two occupants. The firmly fixed racing seat-pan sculpture combines aesthetically with the footwell to form a single unit. It also merges smoothly into the sill area at the side and becomes an integral part of the highly sculptural monocoque landscape. The backrests of the AMG Motorsport seat pans can be adjusted to two positions: 25o and 30o. The steering wheel is electrically adjustable and the pedal box mechanically adjustable (in eleven steps) so that the driver can adopt an optimal driving position. The passenger footrest is also individually adjustable.

The centre tunnel is also a functional part of the carbon-fibre support structure. It blends fully into the seat sculpture and follows the principle of minimalism with its gently rising contour. A high-quality stowage compartment, a reduced switch panel and the Engine Start button form a single unit. The compartment is designed with a transparent lid. Two mini-USB ports for external audio devices enhance everyday usability. The Start/Stop button is prominently positioned on the tunnel and forms the end of the controls towards the front. The cylindrical housing body, made of real metal, is held laterally by two lugs that protrude organically from the basic volume of the tunnel.

Interior with functional structural parts

The slim wing profile of the instrument panel appears light as if floating. As a functional structural component, it also stiffens the monocoque of the hypercar. The two high-resolution, free-standing 10-inch displays with individual Mercedes-AMG ONE graphics are finished with high-quality real-metal parts and adapted to the instrument panel. The instrument cluster display is in a slightly raised position in front of the driver. The multimedia monitor on the right of the centre console is tilted towards the driver. The double-nozzle ventilation unit is suspended under the centre screen like a gondola. Screen and nozzles merge into one unit and underline the purist design concept. The ventilation nozzles repeat the basic rectangular shape of the displays.

The door panels are in functional, high-grade carbon fibre, and integrate smoothly into the sporty interior. A cassette of solid metal combines the air vents and power window switches, which are integrated as deeply recessed rectangles. Like a muscle, a contour drawn far forward in the door runs out to the rear and creates space for the characteristic course of the exterior window line.

Formula 1-style steering wheel

In the radically designed and high-quality race steering wheel, operating and functional elements are combined with original race car components to ensure safe operation in extreme driving situations. The "shift light" is displayed at the top of the steering wheel rim, as is usual in racing cars. The steering wheel, which is flattened at the top and bottom and has an integrated airbag, offers further motorsport trim elements: the two integrated AMG steering wheel buttons can be used to activate various functions without having to take your hands off the wheel. For example, the drive programs, the nine-stage AMG Traction Control, the activation of the DRS or the suspension settings.

Screen instead of interior mirror, colours and materials from the racing car

The Mercedes-AMG developers have also thought about suitability for everyday use and further ease of operation: air conditioning and electric windows are on board as standard, and the infotainment system ensures seamless connectivity. The user interface is integrated as an autonomous concept. The most important information is displayed on the road in the line of vision above the steering wheel, so that the driver is not distracted. To ensure optimal rearward visibility despite the vertical wing on the rear, the interior mirror is replaced by a screen. It shows real-time footage from a MirrorCam integrated into the rear. The screen housing is fully integrated into the roof and accommodates further controls.

Inspired by the Formula 1 racing car, the material contrasts are also consistently and authentically continued in the interior. Here, too, the exposed carbon fibre of the monocoque forms a delightful contrast with the material/colour combination of the seat pans in magma grey nappa leather and black DINAMICA microfibre. With their special design, the seat inlays support air circulation at the driver's back. Yellow contrasting topstitching adds further highlights as standard, but other colours are also available.

Material-appropriate and high-quality details, such as the ventilation nozzles in silver shadow and dark chrome, create further individual highlights. The seat belt straps and contrasting topstitching in the typical AMG yellow underscore the performance claim. Customers also have extensive options for very personal individualisation, which can be specified in close consultation with the experts at Mercedes-AMG.

 
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