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Mercedes-AMG Project One Show Car Unveiled

The Mercedes-AMG Project ONE is celebrating its world première at the 2017 Frankfurt Motor Show: for the first time, the two-seater supersports show car brings the very latest and efficient, fully-fledged Formula 1 hybrid technology from the race track to the road almost par for par to represent the highlight of AMG’s 50th anniversary.

This high-performance hybrid is said to produce over 1.000 hp and reach top speeds beyond 350 km/h. The show car combines outstanding race track performance and day-to-day suitable Formula 1 hybrid technology with exemplary efficiency.


The overall responsibility for the realisation of Project ONE lies with Mercedes-AMG. The complex development work was carried out in close cooperation with the Formula 1 experts at Mercedes-AMG High Performance Powertrains in Brixworth and with the Mercedes-AMG Petronas Motorsport team in Brackley. Together with the four-door AMG GT Concept, the Mercedes-AMG Project ONE provides another insight into the future performance-hybrid drive strategy of the sports car brand within Mercedes-Benz.

Ever since the early days of motorsport, engineers have dreamed of bringing motor racing technology to the road. Mercedes-AMG is now making this dream a reality at the very highest level. “Motorsport is not an end in itself for us. Faced with intense competition, we develop technologies from which our production vehicles also subsequently benefit. We are drawing on our experiences and successes from three constructors’ and drivers’ world championships to bring Formula 1 technology to the road for the first time: in Mercedes-AMG Project ONE”, says Dr Dieter Zetsche, Chairman of the Board of Management of Daimler AG and Head of Mercedes-Benz Cars.

“The Mercedes-AMG Project ONE is the first Formula 1 car with MOT approval. Our highly efficient hybrid assembly stems from motor racing and the electrically powered front axle generates a fascinating mixture of performance and efficiency. With a system output of over 1,000 hp and a top speed beyond 350 km/h this hypercar handles exactly as it looks: it takes your breath away”, Ola Källenius says, Member of the Daimler AG Board of Management responsible for Group Research and Mercedes-Benz Cars Development.

The concept car gives specific indications of what to expect from the upcoming production model. “The hypercar is the most ambitious project we have every undertaken. It marks yet another pinnacle of the successful, strategic development of Mercedes-AMG towards a performance and sports car brand. Project ONE raises the bar in terms of what is currently technologically feasible and thanks to its combination of efficiency and performance it represents an absolute benchmark. At the same time, Project ONE provides an outlook on how AMG will define driving performance in the future”, Tobias Moers explains as the Head of Management at Mercedes-AMG GmbH.


Powertrain: one turbocharged engine and four electric motors

The high-performance plug-in hybrid drive system of the Mercedes-AMG Project ONE comes directly from Formula 1, and was realised in close cooperation with the motorsport experts of 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 direct injection and electrically assisted single turbocharging comes directly from the Mercedes-AMG Petronas Formula 1 racing car. 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 vehicle is mid-engined (ahead of the rear axle) and it can easily reach speeds of 11,000 rpm, which is currently unique for a roadgoing vehicle. However, for higher longevity and the use of commercially available Super Plus petrol instead of racing fuel, it remains significantly below the F1 engine speed limit.

The electric motors on the front axle are also true rev wonders, with rotor revolutions up to 50,000 rpm – current state of the art is a speed of 20,000 rpm.


The very high-revving engine is additionally boosted by a high-tech turbocharger. The exhaust gas and compressor turbines are separated from one another and located at an optimum position to the exhaust side and to the intake side of the V6 engine, and connected to one another by a shaft. This shaft features an electric motor with approximately 90 kW which, depending on the operating status, electrically drives the compressor turbine with up to 100,000 rpm – for instance when moving off or following load changes. 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 dreaded turbo lag – the delayed response to accelerator pedal commands owing to the inertia of the large charger – is completely eliminated. The response time is greatly reduced, and is even shorter than that of a naturally aspirated V8 engine. The electric turbocharger brings about another advantage: it uses parts of the surplus energy from the exhaust system to generate electricity, and either stores it in the high-voltage lithium-ion battery as part of recuperation or provides additional drive power by feeding it to an additional electric motor. This motor produces 120 kW, has been installed directly on the engine and features a link to the crankshaft via a spur gear (MGU-K = Motor Generator Unit Kinetic) – another technology that ensures maximum efficiency and performance in Formula 1.


New all-wheel drive with purely electrically driven front axle

There will also be two further 120 kW electric motors at the front axle. Each is connected to a front wheel via a reduction gear. The fully electrically driven front axle allows individual acceleration and braking of each front wheel, and therefore selective torque distribution (torque vectoring) for particularly high levels of vehicle dynamics. With the axle motors, we estimate that up to 80 percent of the braking energy can also be optimally used for recuperation under everyday driving conditions. This energy is stored in the battery and is available for a longer electric range. Each electric motor is controlled by its own power electronics located in close proximity to the electric motors in the floor assembly.

Top marks for thermal efficiency

The thermal efficiency of the combustion engine with electric turbocharger (MGU-H) in conjunction with the electric motor on the crankshaft (MGU-K) will be over 40 percent. This is a previously unattained peak value for series production vehicles, and confirms the dominant position of the drive system where efficiency is concerned. This means that the show car obtains significantly more drive energy from one litre of fuel than other cars. It is therefore both economical and powerful. By way of comparison, the thermodynamic efficiency of conventional series production engines is around 33 to 38 percent.


Technical data at a glance

Mercedes-AMG Project ONE show car
Rear-wheel drive1.6-litre V6 with direct injection, four valves per cylinder, four overhead camshafts and electrically boosted single turbocharger, electric motor connected to the crankshaft
Displacement1,600 cc
Rear-wheel drive output> 500 kW
Front-wheel drive output2 x 120 kW
System output> 740 kW (> 1,000 hp)
Electric range25 km
Drive systemVariable AMG Performance 4MATIC+ all-wheel drive with hybrid-drive rear axle, electrically driven front axle and torque vectoring
TransmissionAutomated AMG SPEEDSHIFT 8-speed manual transmission
Acceleration 0-200 km/h< 6 secs.
Top speed> 350 km/h


Lithium-ion battery with Formula 1 technology

The battery cells, their arrangement and the cell cooling system are the same as used in the Mercedes-AMG Petronas Formula 1 racing car. However, the quantity of battery cells in the AMG Project ONE will make it significantly more practical for everyday use. The lithium-ion, high-voltage battery and the DC/DC converter supporting and charging the 12 V onboard electrical system are space-savingly accommodated in the vehicle floor behind the front axle.

As a further innovation, the high-voltage EQ Power+ drive system operates with 800 volts instead of the usual 400 volts. Thanks to the higher voltage levels it is possible to influence elements, such as significantly reducing the cable diameters and accordingly saving design space and weight.


Intelligent operating strategies for optimum output and efficiency

Overall the high-performance EQ Power+ plug-in hybrid drive system offers numerous intelligent operating strategies which are optimally tuned to different application scenarios. The driving modes range from purely electric operation through to a highly dynamic mode which corresponds to a setting used in Formula 1 qualifying for optimum lap times. Despite the high system complexity, and depending on the current requirement, the driver will always receive the optimum combination of performance and efficiency. In this process, Mercedes-AMG engineers make use of the many years of experience and know-how from Formula 1, the SLS AMG Electric Drive and Daimler AG’s research and development.

For instance, the driver can move off purely electrically, initially with just the electric motors on the front axle driving the hypercar and the electric motor on the crankshaft supporting short-term acceleration wishes. If the driver presses the accelerator more firmly and demands more output, the V6 engine also switches on. The drive system unfolds its full power as the engine speed increases. Impressive acceleration figures are possible with the Race Start function: acceleration from zero to 200 km/h takes under six seconds.

If the driver’s foot leaves the accelerator again to let the car coast, the system switches to electric drive at the front axle – whilst braking under normal driving conditions recuperates up to 80 percent of the energy, which is fed into the battery.


Completely new, automated 8-speed manual transmission

Power is transferred to the rear wheels by an 8-speed manual transmission that has been entirely developed from scratch for the Mercedes-AMG Project ONE. It is activated hydraulically and can be operated in automated mode or manually using the shift paddles.

The basis for the outstanding driving characteristics of the Mercedes-AMG Project ONE is provided by the lightweight, high-strength carbon-fibre monocoque body, the technology of which likewise comes from Formula 1. The same applies to integration of the engine and transmission: both have load-bearing functions and completely support the rear suspension.

Sep 11, 2017Blagojce Krivevski
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Blagojce Krivevski

Blagojce Krivevski is physicist and green technology lover. Keep in touch with Blagojce through his email, web site, Twitter, Linkedin, Facebook and Google+.

September 11, 2017 Electric Car News, Plug-in Hybrids, Technology2017 Frankfurt Motor Show, Frankfurt Motor Show, Mercedes-AMG Project ONE
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