The AMG division of Mercedes has pioneering in producing most versatile and powerful engines. Now, as a new incarnation the company introduces its new 4 cylinder engine for the AMG45 lineup.The motor is capable of making a 421 hp, making it the world’s most powerful four-cylinder engine in series production.
AMG 2.0-litre M 139 engine exceeded the previously most powerful M 133 by 30 kW (41 hp). Maximum torque has also increased from 475 to up to 500 newton metres. With an output per litre of up to 155 kW (211 hp), the new Mercedes-AMG high-performance turbo engine even ranks ahead of many well-known super-sports car engines. The new, highly efficient powerpack is produced on an innovative production line in Affalterbach, on the “One Man, One Engine” principle.
Apart from its performance figures, the new engine impresses with its immediate response. To this end the torque curve was carefully balanced (“torque shaping”): The peak torque of 500 newton metres (480 newton metres for the basic version) is available in a range of 5000-5250 rpm (4750-5000 rpm in the basic version). With this configuration, the AMG engineers have achieved a power delivery similar to that of a naturally aspirated engine for an even more emotive driving experience.
The engine developers were also able to realise a dynamically increasing torque curve in the lower engine speed range, thereby improving agility. The increasing torque at higher rpm makes the engine more free-revving. Moreover, the high maximum engine speed (up to 7200 rpm) confirms the M 139 as a sports engine.
