At the 2012 Geneva Motor Show, BMW will introduce the first four models in the new product line – BMW M Performance Automobiles – BMW M550d xDrive (sedan and touring), BMW X5 M50d and X6 M50d. The high performance diesels are powered by the same tri-turbo engine.
A new video gives us a visual of the technology behind BMW’s first tri-turbo diesel engine which is based on the popular 3.0 liter inline-six (N57D30), but with an extra turbocharger. The innovative powerplant produces 381 horsepower and 740 Nm (546 lb-ft) of torque.
With 93.6 kW/127.3 hp per liter of displacement, the N57 sets a new benchmark standard for diesel engines. To achieve this goal, BMW has not only added a third turbocharger, but also engineered a new aluminum crankcase, common-rail direct injection with piezo injectors and high-pressure turbocharges with variable turbine geometry. The maximum injection pressure is 2,200 bar.
Story Reference:(BMW blog)
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