Press Release
E-Class photo album - 46 photos
Stuttgart -- Launched successfully in March of this year, the E-Class is now set to benefit from an even wider range of engines: customers can specify the innovative Mercedes-Benz Saloon with a newly developed supercharged engine, an economical four-cylinder CDI unit or an advanced six-cylinder diesel. These new arrivals mean that the E-Class is now available with nine state-of-the-art engines with outputs ranging from 90 kW/122 hp to 350 kW/476 hp.
The E 200 KOMPRESSOR four-cylinder unit belongs to the latest generation of Mercedes-Benz engines which is distinguished by the unique TWINPULSE system. It uses a combination of different technologies - such as supercharging, charge-air cooling, four-valves per cylinder, fully variable camshaft adjustment and a Lanchester balancer - to deliver a maximum of driving enjoyment and smoothness while keeping fuel consumption to a minimum.
On the basis of the NEDC measurement method, the new 120 kW/163 hp four-cylinder unit consumes just 8.4 litres of premium unleaded petrol per 100 kilometres, a saving of some 0.7 litres compared with its predecessor which had the same power output. The top speed of the new E 200 KOMPRESSOR increases to 230 km/h (predecessor: 222 km/h).
The Mercedes engineers achieved these exemplary fuel consumption figures principally by shifting the operating points into engine speed ranges offering optimum thermodynamic efficiency. The reduction of the displacement to 1.8 litres also had a positive effect on consumption figures thanks to lower friction losses and improved thermodynamics. The engine achieves its maximum torque of 240 Newton metres between 3000 and 4000 rpm.
Thanks to the TWINPULSE system, the unique combination of supercharger and Lanchester balancer resolves one of the paradoxes encountered in the development of four-cylinder engines: the balancer shafts compensate for the vibrations inherent to this type of engine and thus ensure a level of smoothness which is exemplary in this engine size class. In other words, by using supercharging and the very latest engine technology, the new four-cylinder powerplant in the E-Class combines the pulling power and low noise levels of a six-cylinder unit with the economy of a four-cylinder engine.
Aluminium cylinder head with fully variable camshaft adjustment
Manufactured in high-strength aluminium alloy, the cylinder head is equipped with 16 valves and two overhead camshafts. Unlike previous four-cylinder engines from Mercedes, there is fully variable adjustment of both camshafts. A newly developed vane-type adjuster with an integrated control valve optimises the valve timing by allowing it to be adjusted continuously. This has a positive effect on torque characteristics at full throttle, on fuel consumption and on exhaust emissions. The valves are controlled by roller cam followers and feature maintenance-free hydraulic valve play compensation.
