Bmw M6 Third Generation Revealed In Two Door Coupe And Cabriolet Variants

In 2010, when BMW decided to stop the production of second generation M6

, many wondered how long the German car maker will take to launch the next gen M6. The question was answered today. BMW has unveiled their all new 3rd gen M6 two door in coupe and cabriolet form.

Unlike the 2nd gen M6, which was powered by a 5.0L V10 generating 500 bhp and 520 Nm torque, this one is powered by the same S63 bi-turbo engine which also powers the new BMW M5, X5 M and X6 M. 2013 BMW M6 3rd gen's 4.4L V8 generates a maximum power of 560 bhp and a maximum torque of 681 Nm.

New BMW M6 coupe accelerates from 0-100 kmph (0-62 mph) in just 4.2 seconds while the cabriolet will take 4.3 seconds for same. As of now, transmission is taken care by a dual clutch seven speed gearbox, but reports suggest that a six speed manual is also under consideration. Compared to the 2nd gen M6, the new 3rd gen M6 consumes 30% less fuel and generates 10% more power. 2013 M6 coupe will be available in showrooms from June 2012, while cabriolet will arrive later this year.

Woodcliff Lake, NJ The iconic M6 returns from a two year hiatus more powerful, more athletic, more focused, more luxurious and more efficient than ever before. Since the "M6" badge was first placed on a BMW back in 1987, this iconic model has exemplified the luxury and daily usability of a top range BMW coupe combined with true super-car performance. Now, in its 3rd generation, the all-new BMW M6 will again be offered as a 4-seat Coupe and Convertible.

The new 2012 BMW M6 Convertible will be the first to arrive in US BMW Center showrooms in June 2012. The BMW M6 Coupe will arrive at US BMW Centers in the late Summer of 2012 as a 2013 model. US Pricing, technical specification, EPA mileage ratings, standard and optional equipment will be announced closer to the on-sale date.

Like its sedan brother the M5, the new M6 models are high-performance sports cars whose exceptional dynamic potential is geared squarely towards the demands of track use. At the same time, the M6 sets new benchmarks in daily driving comfort, innovative features and fuel efficiency.

In order to achieve these lofty performance goals, the new BMW M6 Coupe and Convertible share the most powerful engine ever fitted in a series-produced model from BMW M GmbH mated to a high-torque 7-speed M-Double Clutch Transmission (M-DCT). An innovative Active M Differential which optimizes power transfer between the rear wheels. This drivetrain, combined with extensive chassis and suspension upgrades ensure that the engine's performance can be transferred to the ground.

The new engine shared by the BMW M5 and M6 has the highest output ever generated by a BMW M car, and at the same time provides the most efficient balance between performance and fuel consumption. It is characterized by immediate throttle response, a linear power band and an unusually high and flat torque curve. The new engine produces around 10% higher output than the V10 engine of its predecessors and torque is up by over 30%. At the same time, fuel consumption and CO2 are expected to be reduced by approximately 30%.

To achieve the performance levels demanded by the M6, the engineers at BMW M started with the proven BMW M developed V8 engine from the BMW X5 M - X6 M (internally known as the S63) and further developed it for its duty in the latest M5 and M6 models. Internally designated as the S63T this new engine uses similar M Twin Power technology combined with the reverse flow V8 layout. The result is that the high-revving V8 engine with M TwinPower Turbo Technology lends a whole new intensity to the powerful thrust at higher rev ranges for which M cars are known. The 4.4-liter engine develops a peak output of 560 hp (412 kW) at 5,750 7,000 rpm (versus 555 hp at 6,000 rpm for the S63), while its maximum torque of 500 lb-ft (680 Nm) is on tap between 1,500 and 5,750 rpm (versus 500 lb-ft from 1,500 to 5650 rpm for the S63). The rev limiter intervenes at 7,200 rpm (up 200 rpm from the S63 engine). The rev band, which offers extremely dynamic acceleration between peak torque and the availability of maximum output, is therefore almost three times as wide as that of the V10 engine in the previous generation M6.

As in the V-8 engine of the X5 M, the two twin-scroll turbochargers are placed (along with the catalytic converters) in the V-space between the two cylinder banks in a reverse flow layout. This layout results in an unusually compact engine where the intake is moved outboard and the exhaust inboard the opposite of conventional V-engines. The lengths of intake and exhaust tracts are thereby reduced and their diameters increased, reducing pressure losses - especially on the exhaust side. A further advantage of the layout is the short distance between the cylinders' combustion chambers and the primary catalytic converters; this leads to quicker warm-up of the catalysts after the engine is started and therefore lower start-up emissions.

The patented cross-bank exhaust manifold, first introduced in the S63 engine of the X5 M is also employed in the S63T. This exhaust manifold is a special 8-into-4 setup that combines the exhaust from two cylinders (on opposite banks) that are 360? of crankshaft rotation apart from each other. Each of the eight runners is of identical length to ensure perfectly regular timing of exhaust gas pulses.

Each of the four manifold outlets is fed into each of the four available scrolls of the two twin-scroll turbochargers. The two scrolls of a twin-scroll turbo lead each exhaust pulse directly to the turbine without feedback or interference from the other scroll (that are fed by cylinders at other points in the combustion process). Additionally, dividing the gases into two smaller paths (scrolls) results in higher gas velocity than a single larger path. This enhances the turbocharger's response thereby reducing lag. The crossover manifold is configured so that the second scroll of the turbo is fed by two cylinders that are 180? out of phase with the first scroll. In this way each turbocharger receives distinct exhaust pulses every 180? of crankshaft rotation (from one of four cylinders). Furthermore, the two turbos receive exhaust pulses that are 90? offset from each other. The result is that throttle response is sharpened and turbo lag is reduced to a minimum. The new engine also sports larger intake runners, larger air to liquid intercoolers and a tuned exhaust which results in the engine making power more quickly than previously possible. Finally, the S63T uses a maximum boost pressure of 1.5 bar (21.7 psi) versus 1.2 bar (17.4 psi) for the S63 engine.

BMW's efficient High Precision direct fuel injection also plays a major role in this engine's combination of high performance and fuel efficiency. High Precision direct fuel injection ensures an extremely precise supply of fuel to the combustion chambers. Injectors positioned centrally between the valves within immediate range of the spark plugs spray the fuel into the combustion chambers with maximum pressure of 200 bar (nearly 3000 psi), providing smooth and clean combustion. Innovative solenoid valve injectors in the new BMW M6 engine use multiple injections per combustion cycle to achieve an extremely precise mixture preparation. The fuel also has a cooling effect on the combustion that allowed the M engineers to endow the engine with a high compression ratio of 10:1. This high compression ratio contributes to both performance and efficiency, while reducing exhaust emissions and even has a positive effect on engine sound.

Throughout its history, the heart of the BMW M5 and M6 has been its high-revving, high output-per-liter engine fed by individual throttle plates. The new engine introduces VALVETRONIC variable valve control system to a BMW M engine effectively providing 16 individual throttles.

VALVETRONIC is BMW's patented fully variable valve control system that eliminates the need for conventional throttles. Engine power is instead controlled directly by varying the amount of lift of the intake valves. Pumping losses are minimized with this system and resulting in efficiency and torque improvements. VALVETRONIC has also sharpened the responsiveness of this engine compared to the V10 engine it replaces.

The M TwinPower Technology of the new V8 engine also includes BMW's Double VANOS 1 infinitely-variable valve timing system which optimizes the engine's efficiency and generates high torque at low engine revs. In addition, a volume-controlled oil pump and a range of other EfficientDynamics measures deliver an extra boost to efficiency. The new BMW M6 features both Brake Energy Regeneration and the Auto Start-Stop function, which automatically switches off the engine when the car comes to a stop.

Overall, the LED lights are widely used for automotive lighting, and will come out with even more innovation in the future.

by: kinwater

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