Earlier this month we brought you the first details on a new BMW diesel engine equipped with four turbochargers.
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To cope with the muscular torque peak, that’s delivered from just 2000rpm (450Nm comes on line at just 1000rpm), the new diesel is combined with BMW’s xDrive all-wheel drive.
With peak outputs of 294kW and 760Nm, the 750d xDrive’s quad-turbo diesel produces enough power and torque to rival many modern performance V8 engines, yet it consumes just 5.7 l/100km on the European test cycle in standard-wheelbase form. With its futuristic technology, powerful engines and a feature-laden cabin, the new 7 series has been trying hard to dethrone its segment’s benchmark, the Mercedes S Class. The world’s most powerful six-cylinder diesel engine is making its debut in the BMW 750d xDrive and BMW 750Ld xDrive (fuel consumption combined: 5.9 – 5.7 l/100 km [47.9 – 49.6 mpg imp]; Carbon dioxide emissions combined: 154 – 149 g/km), which come as standard with intelligent all-wheel drive.
The engine’s large and sustained wave of thrust and the eight-speed Steptronic transmission tuned to make the most of it together ensure that instant and ferocious bursts of pace can also be achieved under throttle inputs at higher speeds. The power credentials deliver astonishing performance as well: 4.6 seconds are needed for the usual 62 miles per hour (100 km/h) sprint and the top speed has been electronically capped at 155 miles per hour (250 km/h) when discussing the 750d xDrive.
BMW has taken the wraps off its new BMW 750 diesel engine that will power their new BMW 750d xDrive and BMW 750Ld xDrive models. A new engine management system (Digital Diesel Electronics) is also put in place to coordinate the activity of the engine and its turbochargers.
The highlight here is of course the fourth turbocharger.
The engine utilizes two low-pressure turbos and two high-pressure turbos whereas the previous design used two low-pressure turbos working in conjunction with one massive high-pressure turbo. BMW claims this allows for a quicker response time from the turbos.
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Another new feature here is exhaust gas recirculation for the low-pressure stage of the turbocharging system as well as the high-pressure stage.
