Page 101

gtr_amg_magazin_eng

The result: In synergy with the aluminium hood, the low-slung “twin-blade” radiator grille, large air intakes and the side skirts for the lateral lines, its distinct presence manifests itself precisely. “The Mercedes-AMG C 63 S Coupé ushers in a new era,” Wiech points out. “An era in which the distinctive exterior of Mercedes-AMG models will be perceived even more intensely.” Under the hood the C 63 S Coupé naturally has an eight-cylinder engine with twin turbochargers, which was developed by AMG from the first sketch up to its installation in the production model. “Our engine designers are proud of the new V8 biturbo, which embodies the DNA of AMG,” says Wiech. “With it, the C 63 S now possesses a highly efficient engine that sets new standards with respect to response characteristics, sound and fuel consumption.” This eight-cylinder has been used in the Mercedes-AMG GT since 2014. Unlike in the purebred sports car, however, the transmission in the C 63 S Coupé is situated directly behind the engine; the driveshaft then runs to the rear-axle differential. The designers therefore had to make major adjustments, for example, with the software control system and the lubrication concept with the traditional oil pan. TTwo impressive figures attest to their success: In the Mercedes-AMG C 63 S Coupé the new engine delivers 350 kW (476 hp) and in the S model as much as 375 kW (510 hp). Contributing to the performance are two turbochargers, which are not arranged externally on the cylinder banks but rather in the cylinder V-shape. “Not a cosy place for the chargers,” says Wiech. “Because it can get very, very hot there.” That the AMG engineers were nevertheless able to implement this method of design provides obvious benefits: As a result, the design is not only more compact but the response is even more immediate and the exhaust emissions are lower. The engines are manufactured in the factory in Affalterbach according to the “One Man – one Engine” principle: Each engine is fully assembled by a single mechanic. In the final step, the mechanic affixes a plaque with his signature on the engine. AA veritable explosion of technological innovations in the new C Coupé ensures that the power of the V8 engine also hits the road. For example, the 7-speed sports transmission with multi plate clutch, which shifts upward and downward noticeably faster than in its predecessor. Or the completely redesigned suspension with new front and rear axles, which provides instantaneous steering behavior owing to its more rigid elastokinematics in conjunction with carbon struts. Beyond this, detail oriented solutions such as the dynamic engine mounts that continuously adjust their rigidity to the current driving conditions and demands make for the perfect driving experience. As soon as the first prototypes are built, the test engineers at AMG take the helm. Do the strengths of the engine, drivetrain, vehicle dynamics and aerodynamics truly play as well together in real-world use as the designers intended? Does everything coalesce, is everything perfectly intermeshed and united? Second-best solutions are not welcome here. After all, the engineers are molded by racing. “Every last one of them wants to come in first,” says Wiech. “That’s why our team is never satisfied and never gives up. Not only do you need visceral passion, perseverance and absolute knowledge, it also sometimes means pain if you want to be better than the others.” That’s how it is in sports: Only when each individual gives their all can the team can win. And only in this way can a Mercedes- Benz become an unmistakable Mercedes-AMG. This is how a Mercedes-AMG is created – step by step At the beginning is the strategic phase, in which the requirements are defined – for the new series as a whole and for the individual variants. In the product concept, the engineers determine the exact dimensions of the new Mercedes-AMG C 63 S Coupé and develop a system and component concept from them. The actual design begins with the digital stage. Here design engineers model, calculate and simulate the components and systems on the computer. During the verification that follows, components and systems are put through the paces on the test bench. Meanwhile the integration of components and systems into the overall vehicle is carried out. With the aid of prototype vehicles, the process now moves to the validation. Here engineers test all systems in real-world operation. Only when all the acceptance tests have been passed is the production release issued. The vehicle can go into production. 97


gtr_amg_magazin_eng
To see the actual publication please follow the link above