here the translation - note: my english isn't the best
Shift faster !
For the gearbox the new high-rpm concept of the BMW M5 is very difficult to handle it because there is no manuf. for gearboxes that can manage more than 550NM of torque and 507hp @ 8500rpm (
ooook !) This is the reason why the "M GmbH" (GmbH is such as the Ltd in the states - M is the BMW sportsline - you should know it), had to make their own gearbox for this engine. Klaus Schmidt, the contrivancer for gearboxes at M decided to make a 7-step sequential gearbox because it has lower "rpm and torque jumps" than the regular 5 or 6 speed gearbox and a continuous acceleration: 0-100km/h (0-60mph) = 4,4 sec. and 13,9sec the new M5 cross the 200km/h speed (120mph).
"Shifting like Schumacher" (the german F1 Driver)
You can shift with a shiftknob in the center console or with flaps on the steering wheel. alternative you can let the boardcomputer do this job and you can let him shift like a normal automatic gearbox. Unlike the regular AT Gearbox there is no torqueconverter that needs power from the engine. An Electro-Hydraulic controls the clutch and do the shift process. For this job the new M5 has a hydraulic system that works with with a systempressure of 90bar and respond very fast. An ECU controls solenoids which opens in thousandth part the clutch - switch gear and adhesion in the same time. Tranny specialist Schmidt tells us that this system works 20% faster than the SMG II in the new M3, the new M5 can accelerate without jerk to his topspeed. If you switch back (i.e. from 5th to 4th gear) the engine will intermediate throttle application like a race driver will do it - just faster ! A gearbox like this, without mechanical connections is very compact to produce , in the aluminum gearbox are the gearwheels placed that they doesn't need much space. The heavy claimed gearwheels from the 1st and 2nd gear are placed in bearings near. To take advantage from this system, while the shift-fork takes one gear out, another shift-fork takes the next gear in - at the same time, this increase shift speed. The complete control unit of the hydraulic system is placed in the gearbox as well as the control valve.
That Gearwheels, bearings and shafts stay in the gearbox for ever, the mechanics used special steel. A teflon-coat is used to decrease friction - this is necessary because the gearbox has temperature stadart of 110°C with it's own cooling systen - because of the high rpm's. Another characteristic is the "Drivelogic-System", a technique where the driver can individual adjust the shift procedure. With a button in the center console the driver can adjust the shift time. The higher the rpm's and and the throttle of the engine is the faster are the shift time's. You're able to switch between balanced dynamic and super racy.
With the "Launch control" function you're able to reach max. acceleration. The driving dynamic control will be disabled in this mod and the electronic takes the shift-up process instead of the driver. With optimized slip at the rear wheels the M5 accelerate till it's top speed and inform the driver with a HUD in which gear he is at this time. A grade-assistant prevent the roll back on hills/acclivities while driveaway and defer the shift points in a way if it goes up or down.
i hope you can understand it. When I've got time I'll translate the other sheet (if it's not too much).
And now - RESPECT to me