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Mercedes launches major diesel engine push with one-size fits all approach

FELLOW German car maker Volkswagen may have come to grief over its diesel engine emissions scandal but Mercedes-Benz is embarking on a major push with a new range of diesel engines.

The new four-cylinder two-litre turbodiesel engine that will be powering the new Mercedes-Benz E 220D first before finding its way into nearly all the other models soon.

The previous iteration was 2.2-litre that bettered in almost every area by the opposition so Mercedes had to do something.

Enter a more conventional 1,950cc engine size that is lighter than the old one by 17 percent, thanks to a single-stage turbocharger, aluminum crankcase and the two plastic engine mounts.
The new diesel engine is the first four-cylinder unit to come with all-aluminum construction, the company says.

The new engine – codenamed OM 654 – is also more compact, allowing it to be mounted in a variety of models both transversally and longitudinally.

Mercedes-Benz Vierzylinder Premium-Diesel, OM 654, 2016 Merced

Another important aspect is the reduction in fuel consumption, which, according to Mercedes-Benz, amounts to around 13 percent compared to the OM 651, its predecessor. A series of technical features were employed to achieve it, but most of them can be reduced to a 25 percent reduction in the internal friction loss.

With power ratings ranging from 122 hp to 195 hp, the new OM654 diesel modular engine has the potential to fit under the hood of a broad range of vehicles from the small A-Class to crossovers, minivans or even commercial vehicles.

The new OM 654 delivers around 13 percent lower fuel consumption and CO2 emissions along with a further increase in output compared to its predecessor, the OM 651.

“The new premium diesels are more efficient and powerful, lighter and more compact, and they are designed to meet all future global emissions standards. In our opinion, the diesel engine is indispensable in trucks and cars if we want to further reduce the CO2 emissions from traffic,” Prof. Dr. Thomas Weber, member of the Daimler Board of Management with responsibility for Group Research and Head of Mercedes-Benz Cars Development said in a statement.

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