2011 Mercedes-Benz S 63 AMG gets new engine
AMG is writing another chapter in its “AMG Performance 2015” drive system strategy: a completely newly developed AMG 5.5L V8 biturbo engine with a peak output of up to 571 hp will enter the lineup in summer 2010. The new eight-cylinder unit known internally as the M 157 impresses with a wealth of technological highlights such as direct petrol injection with spray-guided combustion and twin turbochargers.
This innovative, autonomously developed eight-cylinder power unit from Affalterbach sets new standards in terms of fuel consumption and exemplary efficiency: the new S 63 AMG, in which the V8 biturbo will have its market debut, consumes only 22.4 mpg. This represents a saving of 25% compared to the current S63 AMG. An intelligently designed power transfer plays a major part in this: the unique AMG SPEEDSHIFT MCT 7-speed sports transmission combines dynamism with economy, and includes a new start/stop function in the “Controlled Efficiency” driving mode. The new engine/transmission combination is the epitome of exclusivity, sophistication, high performance and economy.
The S 63 AMG showcar is a homage to the impressive history of powerful AMG V8 engines: visually this high-performance saloon resembles the spectacular 300 SEL 6.8 AMG, the racing car that won a class victory and second place in the overall ranking for AMG at the 24-hour race in Spa-Francorchamps (Belgium) in 1971 – and made the company world-famous overnight.
Whilst the AMG 6.3L V8 naturally aspirated engine has a displacement of 6208 cc the new AMG 5.5L V8 biturbo unit makes do with 5461 cc. The use of direct injection technology results in a reduction of exactly 747 cubic centimeters and increases efficiency. For the first time, AMG is also utilizing the advantages of direct petrol injection with spray-guided combustion and piezo-electric injectors: thanks to its higher thermodynamic efficiency, this technology makes more efficient use of fuel and leads to lower exhaust emissions. AMG combines this spray-guided combustion with twin turbochargers. Other highlights include a crankcase wholly of aluminum, four-valve technology with adjustable camshafts, an air/water intercooler, generator management and a start/stop function as standard.
This high-tech package leads to a high output and torque yield, together with fuel consumption figures that are unrivaled in the competitive lineup. The AMG 5.5L V8 biturbo engine develops a peak output of 544 hp and maximum torque of “800 newton meters.” In conjunction with the AMG Performance package these figures are increased to 571 hp and “900 newton meters.” A look at the performance diagrams shows that no other engine in this output class achieves the figures delivered by the new AMG biturbo. The major difference between the two performance classes is an increase in the maximum charge pressure from 1.0 to 1.3 bar.
