The new Mercedes-AMG ONE uses Formula 1 technology for the roads

Bennett Oghifo

Very exclusive hypercar with E PERFORMANCE hybrid drive and system performance of over 1000 hp

AMG’s foundation stone was laid on June 1, 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 electricity consumption: 32 kWh/100 km) celebrates 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 a 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 Mercedes-AMG ONE will also be officially seen in action for the first time in the UK, as part of the Festival of Speed ​​at Goodwood (June 23-26, 2022).

The unique hypercar not only inspires with its Formula 1 E PERFORMANCE hybrid drive, but also with other motorsport technologies. These range from the carbon fiber monocoque and bodywork to the load-bearing engine/transmission assembly, active aerodynamics and pushrod suspension. With its complex technology, the two-seater Mercedes-AMG ONE even offers more than a Formula 1 racing car in some cases. It is equipped with the fully variable AMG Performance 4MATIC+ all-wheel drive with hybrid drive 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 limits. The immense technical challenges involved in manufacturing a modern Formula 1 powertrain suitable for daily road use have undoubtedly pushed us to our limits. For the duration of the development period, many may have thought that the project would be impossible to implement. Nevertheless, the Affalterbach and UK teams never gave up and believed in themselves. I have the utmost respect for everyone involved and am proud of this team achievement. Putting 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.

With us, they have experienced ups but also downs during their development. They were an integral part of Project One from the very beginning and can now look forward to the very exclusive and unique Mercedes-AMG ONE, which has now also been able to overcome the next hurdle and pass all ECE certification tests,” says Philipp Schiemer. , Chairman of the Management Board of Mercedes-AMG GmbH.

“The Mercedes-AMG ONE performance data is ultimately just a small snippet of this vehicle’s technology. Besides a Formula 1 powertrain that generates 1063 hp from a relatively small and very efficient in combination with four electric motors, the monumental task was above all the exhaust after-treatment.The Mercedes-AMG and Mercedes-AMG High Performance Powertrains teams really did a great job here.This project was partly a a curse and a blessing at the same time. But we’ve walked the stony path and, as a technician, you naturally get carried away by 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 equipped with laptops ensure that the motor group thruster starts. With our hypercar, all you need to do is press a button. It also illustrates the immense software know-how that has gone into this vehicle,” says Jochen Hermann, Technical Director of Mercedes-AMG GmbH.

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

The Mercedes-AMG ONE’s E PERFORMANCE hybrid drive comes directly from Formula 1 and was produced in close collaboration with the experts at Mercedes-AMG High Performance Powertrains in Brixworth. It consists of a highly integrated and intelligently connected unit comprising a turbocharged hybrid combustion engine with a total of four electric motors. One was integrated into the turbocharger, another was installed directly on the combustion engine with a connection to the crankcase, and the two remaining engines 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 engine. The four overhead camshafts are driven by spur gears. To achieve high engine speeds, the mechanical valve springs were replaced by pneumatic valve springs. The engine, mounted centrally in front of the rear axle, spins up to 11,000 rpm. However, for longer durability and the use of more commercial premium gasoline, it deliberately stays below the F1 rev limit.

The high-revving power unit is enhanced by a high-tech turbocharger. The exhaust gas turbine and the compressor turbine are positioned remote from each other and connected by a shaft. This allows a lower installation position for the turbocharger. On the shaft is an approx. 90kW electric motor. Electronically controlled, this drives the turbocharger shaft directly, accelerating the compressor wheel to 100,000 rpm before the flow of exhaust gas takes over. The Formula 1 designation for this unit is MGU-H (Motor Generator Unit Heat).

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

Major advantage: the response improves significantly, from idle (when the exhaust flow is still low) over the entire rev range. The 1.6-litre V6 engine responds even more spontaneously to accelerator pedal commands, while the overall driving experience is very dynamic. In addition, the electrification of the exhaust gas turbocharger allows for higher torque at low revs. It also increases agility and optimizes 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 guarantees a direct and continuous response.

The electric exhaust turbocharger in the Mercedes-AMG ONE has another advantage: it uses part of the excess 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 transmitted to the electric front axle or to 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, thereby reducing fuel consumption and exhaust emissions. The high-performance six-cylinder engine has two injection systems. Direct injection delivers fuel into the combustion chambers at a pressure of up to 270 bar. This is sometimes a multiple process, which is controlled by the engine management system as required. The additional port injection is necessary to achieve the high specific power of the engine while meeting exhaust emission limits.

Added to this is the very complex and efficient exhaust gas purification system with four preheated metallic catalytic converters, two ceramic catalytic converters and two petrol particulate filters. The four heating elements with a combined power of 16 kW help meet EU6 exhaust emission limits under real driving conditions (RDE). The exhaust gas cleaning system is also back-pressure optimized to prevent power loss. This also applies to the large, lightweight titanium rear silencer.