Έκθεση Γενεύης 2013: Alpina XD3 Biturbo

H Alpina έχει φέρει στη Γενεύη και την XD3 Biturbo, μια βελτιωμένη X3. Μηχανικά φορά έναν 3,0-λιτρο twin-turbo κινητήρα απόδοσης 350 ίππων στις 4.000 σ.α.λ με 700 Nm ροπής διαθέσιμα από τις 1.500 έως τις 3.000 σ.α.λ. Συνδυάζεται με το 8-τάχυτο αυτόματο κιβώτιο της ZF και έχει μέση κατανάλωση 6,8 λίτρα/100 χλμ και εκπέμπει 180 γρ/χλμ CO2.

Οι Γερμανοί της έχουν τοποθετήσει ηλεκτρονικά ρυθμιζόμενα αμορτισέρ, 20″ ζάντες με ελαστικά Michelin

[Πηγή: Alpina]

Besides the core competence of developing a small but fine selection of exclusive BMW ALPINA automobiles with the aim of delivering excellent comfort, performance anddriving characteristics, ALPINA is also in a position to respond to very specific customer demands.BMW originally conceptualised and defined the term Sports Activity Vehicle, the success of which remains undamped irrespective of market. Superior seating position,representative looks, versatile dimensions, dynamic handling and all-wheel drive – in short, the BMW X3 is an on-going success story.Combined with another success story, namely the extraordinary straight six-cylinder diesel engine from the BMW ALPINA D5 Bi-Turbo, logic defines that the result should becompelling. The new BMW ALPINA XD3 Bi-Turbo trumps with extraordinary performance and traction while maximising efficiency. It is intended for customers seeking thefastest diesel SUV available today.DRIVEThe drivetrain of the XD3 Bi-Turbo utilises the excellent attributes of the BMW full aluminium 3 litre straight six cylinder engine with modern common-rail direct injectionand two turbochargers with variable turbine geometry.With the aim of further maximising the potential of this engine and using the freedom that small series production allows, ALPINA engineers have worked extensively onoptimising the air intake flows. The new air intake ducts have substantially larger diameters and feature optimised radii which lead to a 30% reduction in loss of pressure. Thiseffective means of ‘de-restricting‘ the air flow between the air intake and the air filter housing allows the engine to breathe more freely, resulting in improved performanceand a more lively character. In combination with the realisation of appropriate turbo charging and injection pressures this leads to a maximum output of 350hp (257kW) at4000rpm and 700Nm torque between 1500 and 3000rpm.The performance and effectiveness of the entire cooling system has a direct influence on the stability and output of turbo charged engines – as a result, the coolingsystem in the new XD3 Bi-Turbo is of central importance. A large volume intercooler (+38%), with an optimised inlet and outlet design, feeds the engine with air.Two additional separate water coolers, which are situated in front of the wheelhouse and lie perfectly within the air flow from the front spoiler, ensure that all coolingmediums (via oil/water-heat exchangers) are kept at optimum temperatures, even during maximum thermodynamic loads. The operating parameters and componentsof the cooling system are managed by a cooling system control unit which features an intelligent operation of the electric cooling fan to directly influence performanceunder full loads.An exhaust manifold made from high-strength material allows for higher exhaust gas temperatures (+50?C) which result from the increased power output. From the middlesilencer backwards the exhaust system is carried out in stainless steel and finishes with two double-ended tailpipes which carry discrete ALPINA and Akrapovi? lettering.Sound engineering and the reduction of silencer volumes has resulted in a for diesel engines surprisingly throaty exhaust sound, especially at higher rpms. The character ofthe engine overall is unusually lively for a diesel engine, revving freely past 4500rpm.Despite the engine‘s high specific power output of 117hp per litre, the XD3 Bi-Turbo achieves class-leading efficiency figures: 6.8l/100km (41.5mpg) and 180g/km CO2(Combined, measured according to ECE norm).TRANSMISSIONAdapted and tested in co-operation with ZF, the advanced SWITCH-TRONIC 8-Speed Sport-Automatic transmission features specific hardware modifications demanded bythe high torque, these include special mechatronic components and an adapted torque converter.ALPINA engineers have spent many development and test hours working on the software to ensure that the transmission provides unparalleled levels of both comfortand performance. The blend of eight speeds and high levels of torque makes for super comfortable gear changes with no noticeable interruption to the delivery of power.In Automatic (D) Shift Mode the XD3 Bi-Turbo excels at cruising along at speeds in high gears at minimum rpm, this benefits both consumption and comfort. Using theSport (S) Shift Mode the transmission becomes noticeably crisper and unmistakably immediate, gear changes become quicker and take place at higher shift points. TheALPINA SWITCH-TRONIC buttons, which are ergonomically and unobtrusively positioned on the back of the steering wheel, activate the Manual (M) Shift Mode whichallows the driver to take complete control of the transmission. The system also allows for multi-simultaneous down-shifts in milliseconds, hereby the transmission will skipseveral gears depending on engine loads and rpm. In this manner the 8-Speed Sport-Automatic transmission with ALPINA SWITCH-TRONIC reveals itself as extremelymultifaceted, providing the right shift characteristic for any and all situations. In combination with the Sport setting of the Drive Performance Control which further sharpenssuspension and transmission, the new XD3 Bi-Turbo will sprint from 0 to 100km/h in only 4,9s and reach a segment leading top speed of 253km/h (157mph).CHASSISTo fulfil the seemingly contradictory demands for comfort, everyday usability and dynamic handling, the XD3 Bi-Turbo is equipped with electronically-adjustable dampers.This system is tied into other system parameters controlling steering assistance, torque cushioning and the Dynamic Stability Control system. Featuring Drive PerformanceControl with Normal, Sport and Sport+ settings, the XD3 Bi-Turbo can transition effortlessly from cultivated luxury to thorough-bred sportiness. Light steering, comfortablesuspension, a smooth transmission and BMW’s excellent xDrive all-wheel drive system make it an ideal everyday partner – whatever the conditions. At the same time, theXD3 Bi-Turbo will dive into and accelerate out of corners with such ferocity and traction, that powerful sporting saloons will find hard to beat.The wheel and tyre set-up comprising 20” ALPINA CLASSIC wheels with MICHELIN Pilot Super Sport tyres measuring 255/40 ZR20 (101Y) EL, E/A/ 71 dB front and 285/35ZR20 (104Y) EL, E/A/ 73 dB rear is to a large extent responsible for the agile and sure-footed handling of the XD3 Bi-Turbo. The low-profile tyres, which forego run-flattechnology for the sake of slow-speed damping, combine well with BMW’s Variable Sport Steering to achieve precise turn-in. This can be further enhanced by means of anoptional 21” ALPINA CLASSIC wheel and tyre set-up.In order to travel safely, dynamically and at speed even in the winter months, a 20” ALPINA CLASSIC winter wheel and tyre set-up is available in the dimensions 255/40 R20 101Wfront and 285/35 R20 104W rear.DESIGN & EQUIPMENTALPINA typical design cues and aerodynamic refinements integrate well into the overall design of the XD3 Bi-Turbo and give it purposeful appearance. The athletic front withALPINA spoiler has a dynamic design and integrates functional air intakes for an optimum air flow to the coolers.The rear features ALPINA trademark slightly elliptical double-ended tailpipes which are integrated into an ALPINA rear valance which has been constructed to allow the useof an optional towbar.The comprehensive standard equipment level features Leather Upholstery, supportive Sport Seats, Xenon Headlights, Cruise Control and Park Distance Control. The handfinished ALPINA LAVALINA sport steering wheel with Blue/Green stitching connects driver and car while the ALPINA instrument panel with black-panel LCD technologydisplays vital information, including a digital speed read-out and gear indicator. ALPINA door sills, floor mats and emblems in the seatbacks provide discreet hints to the XD3Bi-Turbo’s provenance. Optional interior trim finished in Alcantara with contrasting stitching makes for a decidedly more sporty ambiance.Buchloe, March 2013XD3 BITURBO ENTECHNICAL DATA BMW ALPINA XD3 BITURBOWEIGHTTRANSMISSIONWHEELS & TYRESDIMENSIONSALPINA CLASSIC weight-optimised light alloy wheels, 20-spoke design withconcealed tyre valves behind lockable hub caps, with MICHELIN Pilot SuperSport tyres:front 8.5 x 20” with 255/40 ZR20 (101Y) ELEU-tyre label* E/A/ 71 dBrear 9.5 x 20” with 285/35 ZR20 (104Y) ELEU-tyre label* E/A/ 73 dBLength mm 4647Width mm 1901Height, unladen mm 1670Wheelbase mm 2810Track, front mm 1614Track, rear mm 1609Luggage capacity (DIN) l 550-1600Fuel tank, approx. l 67Unladen (DIN) kg 1910Max permissible kg 2440Permitted load kg 590Max axle load, front kg 1160Max axle load, rear kg 1320Max trailer load, braked kg 2400Max trailer load, unbraked kg 750ENGINE PERFORMANCEFUEL CONSUMPTIONCylinders 6 in lineCapacity cm³ 2993Bore mm 84.0Stroke mm 90.0Compression ratio : 1 16.5Max output kW/hp 257/350at rpm 4000Max torque Nm/lbs-ft 700/516at rpm 1500-3000Engine management BOSCHDDE 7.31Fuel type DieselEmission classification Euro 5Urban l/100km 7.8Extra-urban l/100km 6.3Combined l/100km 6.8CO2 emissions g/km 180Efficiency category CAcceleration 0-100km/h / 0-62mph s 4.9Acceleration 0-200km/h / 0-125mph s 21.7Top speed km/h 253Further information on specific fuel consumption and specific CO2 emissions of new passenger cars is given in „Leitfaden über den Kraftstoffverbrauch, die CO2-Emissionen und den Stromverbrauch neuer Personenkraftwagen“ which can be obtained free of charge at all points of saleand from the ‘Deutsche Automobil Treuhand GmbH (DAT), Helmut-Hirth-Str. 1, 73760 Ostfildern-Scharnhausen‘.Gearbox 8-speed Sport-Automatic (ZF 8HP70)with SWITCH-TRONICGearbox ratios 1st gear 4.71 5th gear 1.292nd gear 3.14 6th gear 1.003rd gear 2.11 7th gear 0.844th gear 1.67 8th gear 0.67Reverse 3.32Final drive ratio :1 2.81*EU-tyre label =fuel efficiency/wet grip/external rolling noise class Modifications and errors exceptedALPINA Burkard Bovensiepen GmbH + Co. KG