[4k] BMW X3M and X4M and X3M Competition and X4M Competition in SUPERDETAIL 4k Ultra HD

[4k] BMW X3M and X4M and X3M Competition and X4M Competition in SUPERDETAIL 4k Ultra HD

The addition to the BMW M GmbH line-up of its first high-performance models in the mid-size Sports Activity Vehicle (SAV) and Sports Activity Coupe (SAC) segments also heralds the arrival of a newly developed sixcylinder in-line engine in two variants. The engine stands out with its familiar M high-revving character, the latest M TwinPower Turbo technology update, plus track-tested cooling and oil supply systems. It develops 353 kW/480 hp in the BMW X3 M and BMW X4 M and an even mightier 375 kW/510 hp in the BMW X3 M Competition and BMW X4 M Competition

The standout performance characteristics of the 3.0-litre units are
encapsulated by the linear power development that is such an M speciality, plus a hunger for revs quelled only by the engine’s limiter. And all to the tune of an arresting soundtrack. Like the maximum output figure, peak torque of 600 Nm (442 lb-ft) also represents a new high point for a six-cylinder in-line petrol engine from BMW. The ongoing development of M TwinPower Turbo technology, coupled with the inclusion of two gasoline particulate filters and four catalytic converters, also ensures the high-performance engines can claim remarkable efficiency and exceptionally low emissions.

Higher revving, more powerful and more efficient thanks to weight
minimisation and the latest M TwinPower Turbo technology.
The new six-cylinder in-line engine has a forged crankshaft, whose
exceptional torsional resistance allows it to handle extremely high torque levels. Plus, its low weight and reduced rotating mass feed the engine’s highrevving instincts. The closed-deck design of the six-cylinder engine’s crankcase ensures it is incredibly rigid, paving the way for higher combustion pressure and optimised power output. The wire-arc sprayed iron coating for the cylinder walls serves to reduce weight and frictional losses.

In addition, the cylinder head has a core manufactured using 3D printing. This additive manufacturing process enables geometric forms to be created that are beyond the capability of conventional metal casting techniques. 3D printing technology has cut the weight of the new engine’s cylinder head core and allowed its coolant ducts to be routed in a way that optimises temperature
management.

This latest incarnation of M TwinPower Turbo technology features two monoscroll turbochargers, which supply compressed air to cylinders 1 – 3 and 4 – 6 respectively. The engine’s power output is further enhanced through the use of upgraded compressors and an indirect intercooler supplied by a lowtemperature circuit. A flow-optimised air intake system reduces pressure losses, while an electronically controlled wastegate (which can be closed quickly) enhances responsiveness. The wide-opening wastegate also
heightens the effectiveness of the catalytic converters positioned close to the engine.

The likewise further developed High Precision Injection technology raises maximum injection pressure from 200 bar to 350 bar, enabling extremely efficient mixture preparation. The fine atomisation of the fuel in the combustion chambers minimises emissions, especially under full acceleration loads and at high speeds. The package of technology is rounded off by VALVETRONIC fully variable valve timing and Double-VANOS variable camshaft timing.

The six-cylinder in-line engine serves up its peak torque between 2,600 and 5,600 rpm in the BMW X3 M and BMW X4 M, and between 2,600 and 5,950 rpm in the BMW X3 M Competition and BMW X4 M Competition. It generates maximum output at 6,250 rpm and sustains its potent power delivery until the 7,200 rpm “red line”. The BMW X3 M and BMW X4 M accelerate from 0 to 100 km/h (62 mph) in 4.2 seconds, while the Competition models hit the 100 km/h (62 mph) mark in a mere 4.1 seconds. The top speed of all models is an electronically governed 250 km/h (155 mph).

But if the optional M Driver’s Package is specified, this limit rises to
280 km/h (174 mph) – or 285 km/h (177 mph) for the Competition models.

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