BMW Diesel Engine to Get Borg Warner’s Quad-Turbo

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Under the bonnet, both the BMW M550d Xdrive and the 750d Xdrive feature the Twin Power Turbo with two turbochargers for the low-pressure stage and the high-pressure stage, respectively. The turbochargers are designed to ensure a smooth performance over the entire speed range and to reduce fuel consumption by up to four percent. The 3.0-litre inline diesel engine achieves a power output of 294 kW (400 hp) and a maximum torque of 760 newton metres with BorgWarner’s new R2S system.

For rapid acceleration without a noticeable turbo lag, the high-pressure turbocharger is designed to rapidly develop boost pressure in the lower engine speed range. The second turbocharger is switched on only at higher flow rates. For the low-pressure stage, two small, lightweight turbochargers ensure a faster response. "Borg Warner’s latest and most sophisticated R2S system features four turbochargers to take boosting to a whole new level and help our customer achieve the highest demands for power and efficiency for an exciting driving experience", says Frédéric Lissalde, President & General Manager, Borg Warner Turbo Systems.