The launch of the BMW 5 Series GT also coincides with the introduction of a new BMW engine, internal codename: N55. The new BMW Power Turbo uses a single twin scroll turbo instead of twin turbochargers as the N54 engine. The 2,979cc six-cylinder powerplant features for the first time High Precision Injection and variable VALVETRONIC valve management combined with the single twin-scroll turbocharger. Even though BMW has not yet confirmed our suspicions, we believe the single turbocharger used in the 5 Series GT is the same as those fitted to the new 4.4 liter V8 engine in the X5M/X6M. Power and torque is similar to the twin turbo engine – 225 kW/306 hp at a speed of 5,800 rpm- but the 400Nm/295 lb-ft peak torque kicks in 1,000 rpm earlier at 1,200 rpm.
TwinPower Turbo, High Precision Injection and VALVETRONIC in a new straight-six gasoline engine.
The new model is entering the market with a choice of two gasoline engines and one diesel power unit. In the process BMW’s newly developed straight-six gasoline engine for the fi rst time featuring turbocharger technology, High Precision Injection and variable VALVETRONIC valve management all together is making its world debut. Indeed, the intelligent combination of these three technologies gives this power unit the best and most direct response ever offered by a straight-six turbocharged engine from BMW.
High Precision Injection with new injector nozzles.
The VALVETRONIC system is fully integrated in the cylinder head. This intelligent and extremely compact arrangement allows a direct combination with High Precision Injection with its injection nozzles placed in the middle between the valves and, therefore, in the immediate vicinity of the spark plug in the cylinder head.