Press Release
Part 2: Mercedes-AMG Engines in Depth
The AMG supercharged V6 engine:
powerpack for the SLK-Class and C-Class
- Supercharged V6 with 3.2-litre displacement and 260 kW/354 hp
- 450 Nm: unrivalled peak torque
- Design which draws on experience in motorsport
Sheer power and compact dimensions are the two major features of the AMG supercharged V6 engine. Developing 260 kW/354 hp and 450 Nm of torque, it enables the SLK 32 AMG and C 32 AMG to deliver thoroughbred sports car performance. The supercharged six-cylinder engine enters new realms in terms of torque: this powerful unit produces no less than 450 Nm at 4400 rpm – an absolutely outstanding value which makes the C 32 AMG and SLK 32 AMG the world torque champions among all series-production cars in their segments.
The torque band of this supercharged six-cylinder powerplant is equally impressive: more than 400 Nm are available from as little as 2300 rpm; this value remains constant up to 6100 rpm, providing outstanding acceleration at any time. Thanks to the enormous power on tap even at very low engine speeds, gliding along effortlessly in a high gear is likewise a most pleasurable experience.
Low consumption with premium unleaded fuel (RON 95)
The supercharged V6 engine also delivers impressive fuel economy: with NEDC combined consumption of just 11.2 litres of premium unleaded fuel per 100 kilometres for the SLK 32 AMG and 11.5 litres for the C 32 AMG (Estate 11.9 litres), Mercedes-AMG GmbH demonstrates that sports performance and excitement certainly can be combined with environmental compatibility.
Moreover, in contrast to the engines of most competitors, the new supercharged engine is designed to run on widely available premium unleaded fuel (95 RON). All three of these powerful AMG cars already comply with the particularly stringent limits of the EU-4 emission standard which comes into effect from 2005.
The most important data for the AMG supercharged V6 engine at a glance, based on the example of the SLK 32 AMG:
Helical belt-driven supercharger for a high charge pressure
A newly designed supercharger lies at the heart of the powerplant and ensures an unusually high air flow rate. This belt-driven charger is of the helical type with cast aluminium and Teflon-coated rotors. At maximum engine speed, these achieve up to 20,700 rpm, forcing up to 1200 kilograms of air per hour into the six cylinders of the AMG engine. This innovative set-up thus produces a significantly higher charge pressure than conventional belt-driven charging systems. To be specific, the supercharger from Mercedes-AMG produces charge pressures of more than 1.0 bar – that is up to 30 percent more than comparable systems.
At 81 kW/110 hp per litre of displacement, the high-performance AMG powerplant has the highest volumetric efficiency of any series-production petrol engine with belt-driven supercharger in the world. Its maximum mean pressure, a figure used by engine specialists to describe the absolute performance of an engine, is 17.7 bar at the maximum torque of 450 Nm at 4400 rpm. With this value the supercharged V6 occupies the peak position among all series-production spark-ignition car engines with belt-driven superchargers.
