The 2011 750i and 750Li are the first 7-Series models ever to be offered with BMW's highly lauded xDrive All-Wheel-Drive system. BMW's xDrive all-wheel drive system has been enhanced for these models to ensure that the 750i xDrive and 750Li xDrive set a new benchmark for handling characteristics among all-wheel drive sedans. BMW's Integrated Chassis Management is able to identify and limit understeer by shifting torque rearward while preserving the stability for which xDrive has been so widely recognized.
As a second step, the Integrated Chassis Management system can then apply a precise combination of throttle and individual rear-corner braking in order to maintain perfectly neutral handling in a corner - regardless of road surface conditions.
These key enhancements to xDrive ensure that the 750i xDrive and 750Li xDrive will be two of the most nimble all-wheel drive sedans available in any vehicle segment.
The 7-Series embodies luxury that inspires, driving dynamics that enthuse, and a visual presence that earns universal admiration. It is the product of a self-assured design philosophy and consistent yet ever-evolving engineering artistry. In great measure, this new sedan owes its unique, progressive character to an abundance of innovations whose purpose is to make driving a magnificent automobile - as well as riding in it - a memorable experience.
All 7-Series models are equipped with Driving Dynamics Control, which enables the driver to select from four progressively sporty driving programs with the touch of a button. Driving Dynamics Control integrates Electronic Damping Control (which has three-mode shock-absorber control) with transmission shift characteristics, engine response to the accelerator pedal, and steering assist and traction control level.
All the 750 models are powered by a highly advanced and unique reverse flow twin-turbo V-8 engine. With 4.4 liters of displacement and direct fuel injection (BMW's High Precision Injection), the V-8 carries its two turbochargers in the "valley" between the two cylinder banks putting its exhaust valves inboard and intake valves outboard - a highly unusual layout and a complete departure from its predecessor. This "variation from the norm" pays off: the engine develops 400 hp over a range from 5500 to 6400 rpm, and a robust 450 lb-ft. of torque over the even broader range of 1750-4500 rpm.
The point of the new engineering approach is to achieve higher performance without correspondingly higher fuel consumption. In technical terms, the approach involves some very new design details. For the first time, twin turbochargers and the exhaust-cleansing catalytic converters are placed between the V-8's two cylinder banks. In turn, this required the exhaust camshafts and valves to be inboard so that the path from cylinders to turbochargers (which are driven by exhaust gas) would be efficiently short. The intake camshafts and valves are then positioned outboard. Visually, this results in a very different-looking engine.
Permanent all-wheel drive with electronically controlled, variable distribution of drive power between the front and rear axles gives all BMW X models not only superior traction, but also enhanced driving dynamics. Indeed, BMW xDrive gains its superiority as an intelligent all-wheel-drive system by distributing drive power front to rear by way of an electronically controlled multiple-plate clutch according to driving conditions, in exactly the right dosage and to the axle with grip.
In normal driving situations BMW xDrive distributes drive power in a 40:60 split front-to-rear, with sensors consistently measuring wheel slip. Hence, the system is able within a fraction of a second to vary the distribution of drive forces, anticipating the upcoming situation and not just responding once a wheel has started to spin. This serves to stabilize the vehicle even before the driver notices any need for action.
Yet another iDrive innovation is its ability to combine voice and controller entry, called Multi-mode Input. The user can go back and forth between the two methods while actually inputting; indeed, voice recognition can remain active during input via controller and the user can modify an input via voice. Voice recognition - BMW calls it Voice Command - is activated by its function key on the steering wheel, and de-activated either upon completion of the action or by pressing the key again. Voice Command is simplified by visual display of the available commands, yet its capabilities go further in that numerous synonyms of these commands are also recognized.
Via an infrared camera, the optional Night Vision scans a range up to 1600 ft. ahead of the vehicle over a 24-degree-wide range. Another first for the 7 is this additional capability: recognition of the direction a pedestrian near the roadway is moving. If it's parallel to the road, the system senses and displays the presence on the iDrive screen (or, if present, Head-up Display) but doesn't warn the driver; if the person is on a path to cross the road, it does display a warning.
Source: BMW press