Geneva 2009- BMW Alpina B7 Biturbo
The fourth generation BMW 7 Series-based Alpina B7 Biturbo has been unveiled at the Geneva Motor Show this year. Unlike tuners who fits cars with shiny alloys, spoilers, LED's and tamper with the elegant BMW 7 Series design, Alpina keeps the customization at just the right level to preserve its natural charm.
We make the above comment after looking at the following photographs.
BMW Alpina B7 Biturbo Image Slideshow
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BMW Alpina B7 Biturbo features and specification
- A 4.4-liter V8 engine, that produces 507 hp with a maximum of 700 Nm of torque occupies the area underneath the bonnet.
- 0-100 km/h is reached in 4.7 seconds, and an electronically limited top speed of 280 km/h
- Two new large-vane turbochargers have been mounted with an optimized intercooler system. Piston has been modified to cope with the turbo pressure.
- ZF six-speed automatic sport transmission, which uses Alpina's Switch-Tronic system refines power.
- Power is transferred to 21-inch wheels, and the suspension system that is responsive but soft, has three modes of operation
- Conventional tires have also been used in place of run-flats
Image Source- BMW Blog
Press Release
| B7 BITURBO
With the new BMW ALPINA B7 Bi-Turbo, ALPINA presents its fourth generation of automobiles based on the BMW 7 Series. Prominent predecessors include the BMW ALPINA B12 6.0 and B7, which raised the bar in the high-performance luxury saloon segment. Newly interpreted and in every way state-of-the-art, the B7 Bi-Turbo unites exclusiveness, athleticism and comfort in perfect harmony. Yielding exquisite levels of torque and power from the charged 4.4 litre V8, and in conjunction with the electronically-adjustable suspension with active roll stabilisation, the B7 Bi-Turbo promises to offer a spectrum of driving experiences so varied as to be unheard of in this class of automobiles. The evolution of the traditional 20-spoke 21" ALPINA CLASSIC wheels underline the fresh design language found throughout the B7 Bi-Turbo and impart it a distinctive appearance and powerful stance. Powertrain The fully-aluminium, 4395 cm3 V8 aggregate yields 507 peak horsepower (373 kW) at a moderate 5500rpm, with a maximum torque of 700 Nm available between 3000-4750rpm. Two especially for the ALPINA powerplant constructed turbochargers with generously-dimensioned turbine vanes are responsible for the forced induction. Thorough exploitation of the engine's potential was achieved by means of optimising the indirect intercooler (air-water/water-air) with its short intake paths and flow-optimised intercooler tracts. High-performance pistons are at work in the cylinders, carefully developed to harmonise with a compression of 9.2:1 and a maximum turbo boost of 1.0 bar. The result is a formidable specific output of 115hp (85kW) per litre, with a maximum average compression of 20.1 bar, a benchmark even amongst established sportscars. The ALPINA SWITCH-TRONIC, which has been programmed to shift exceptionally smooth and comfortable in Automatic mode, offers different shift characteristics for every taste and situation thanks to the additional Sport and Manual modes. Driving the B7 Bi-Turbo becomes an altogether different experience when using the buttons found on the back of the steering wheel for manually selecting the gears of the automatic transmission. This ensures shifts take place within a few hundred milliseconds and with only minimal interruption to the transmission of power, favourably comparable even to the best twin-clutch transmissions. As a result, the B7 Bi-Turbo sprints from 0-100 km/h in 4.7 seconds, vehemently pressing on to an electronically-limited 280 km/h top speed. Long gone are the days when a purely "hard and sporty" ride was a sought-after attribute of suspension set-ups. Striving for truly neutral handling continues to be the intelligent way forward, yielding the best of what is technologically feasible. In pursuit of this goal, marginally shorter and uniquely calibrated springs reduce front and rear ride height by 15mm and 10mm respectively. Together with the 21" wheel and tyre combination the suspension is at once sensitive to inputs and direct in its feel, yet free from the harshness of a purely sports-oriented suspension, imparting this large saloon with an agility usually only associated with much smaller sports saloons. The light-weight 21" wheels, with their new interpretation of the ALPINA CLASSIC wheel design, are shod with an especially selected staggered MICHELIN tyre set-up: 245/35 R21 front and 285/30 R21 rear. Foregoing Run-Flat technology, conventional tyres are used to ensure a supple, comfortable finesse that is rare today. ALPINA have integrated state-of-the-art electronic suspension technologies, skilfully and subtly adjusting them to the demanding requirements of our customers. As part of the B7 Bi-Turbo standard equipment, the electronic suspension system with Dynamic Damping Control and Dynamic Drive (active roll stabilisation) enable the driver to select from three distinct suspension set-ups: Comfort, Normal and Sport. The B7 Bi-Turbo offers the driver unheard-of versatility, delivering on long-distance comfort just as readily as on back-road pace, always with a maximum of enjoyment and safety. Design In true "form-follows-function" fashion, the typical ALPINA front integrates the fresh-air requirements of the transmission and engine oil coolers, which are separated out of the main cooler module for improved efficiency. The design of the front and rear spoiler follows clearly aerodynamically-oriented interests, reducing lift at the front and rear by 30% and 15% respectively. Left and right, the exhaust system's two double tailpipes are seamlessly integrated into the rear valance and are witness to the B7 Bi-Turbo's potency. When climbing into the B7 Bi-Turbo, one immediately takes note of the ALPINA door sill trims which are finely illuminated in blue. The SWITCH-TRONIC steering wheel is gloved and hand-stitched in the finest, most comfortable LAVALINA leather. In the driver's line of sight, red pointers over a field of blue dials grace the instrument cluster, where a Black-Panel LCD screen is responsible for communicating driver-important information. Exclusive interior luxury wood trim in the form of Myrtle Burl, a knotted burl of the Laurel only found on the Pacific Coast of the United States, provides a warm and traditional ambience. Optional ALPINA Piano Lacquer interior trim with its silver diagonal rhombs, offers a modern and just as exclusive alternative. Technical Data B7 BITURBO Saloon SWITCH-TRONIC Dimensions Length (mm) Width (mm) Height, unladen (mm) Wheelbase (mm) Track front (mm) Track rear (mm) Luggage capacity DIN (l) Fuel tank capacity (l) Weight Permissible gross weight (kg) Permitted payload (kg) Max axle load, front (kg) Max axle load, rear (kg) Max trailer load limit, braked (kg) Max trailer load limit, unbraked (kg) Engine V8 90° Displacement (cc) 4395 Bore (mm) 88.3 Stroke (mm) 89.0 Compression ratio (:1) 9.2 Max output (kW/hp) 373 / 507 at rpm (1/min) 5500 Max torque (Nm/rpm) 700 / 3000 Engine management BOSCH Motronic ME 9.2.1 Fuel type Super plus Emissions classification Euro 5 Transmission Gearbox 6-speed Automatic ZF 6HP26 SWITCH-TRONIC 1st 4.17 2nd 2.34 3rd 1.52 4th 1.14 5th 0.87 6th 0.69 Final drive ratio 3,46 Performance Acceleration 0-100 km/h (s) 4.7 Top speed (km/h) 280 Fuel consumption * Urban (l/100 km) 17.7 Extra urban (l/100 km) 8.6 Combined (l/100 km) 11.9 CO² emissions (g/km) 286 Wheels and tyres Standard wheels and tyres ALPINA CLASSIC 21" front 8.5 x 21 245/35 R21 rear 10 x 21 285/30 R21 * Information on fuel consumption and CO2 emissions according to 1999/94/EG: Further information on specific fuel consumption and specific CO2 emissions of new passenger cars is given in "Leitfaden über den Kraftstoffverbrauch und die CO2-Emissionen neuer Personenkraftwagen which can be obtained free of charge at all points of sale and from the 'DAT Deutsche Automobil Treuhand GmbH, Helmut-Hirth-Str. 1, 73760 Ostfildern-Scharnhausen'. Equipment B7 BITURBO Saloon SWITCH-TRONIC * Standard Equipment Standard equipment shown represents the specifications for the German market only. According to the specific requirements of other markets, alterations in models, standard and optional equipment may occur. For precise information, please contact the BMW ALPINA importer in your country. |