Independent Shift Rail Transmission
At first glance, such a transmission with the emphasis on independently acting shift rails seems to offer little new. Shift rails, shift sleeves and synchronizer rings are already known from the normal manual
gearbox. It is spectacular, however, that this transmission could become more popular than the well-loved dual-clutch transmissions.
You will argue that it is not dealing here with a manually shifting transmission, but a relatively tired responding, sequential transmission with equally unspectacular seven speeds.. Right, but take a look at the
distribution of the gears on the individual shift
rails and shift sleeves.
Why serve e.g. one of them the second and on the other side the fourth gear? Simple answer: So that while it takes out the second gear, another shift rod can already insert the third gear. Combining this with extremely
short openings of the clutch, e.g. at Lamborghini switching times of less than 50 milliseconds are possible.
That alone would be almost more than competitive with a dual-clutch transmission, but the company Graziano in the Oerlikon Group promises even more. With oil channels in the housing and despite an electric pump,
this transmission is nearly 20 percent lighter for a twelve-cylinder engine than a dual-clutch transmission for a standard car.
For Lamborghini, the advantage of the much slimmer design is added. Incidentally, it is combined with a two-disc clutch, not a double clutch of course. However, it should not be concealed that the synchronizer rings
are additionally coated for the higher load. Incidentally, the electronic control comes from Vocis, also part of the Oerlikon Group. 07/18
| 
