Clutch 16 - electronically
Of course, the dual-clutch transmission is a fine thing. Anyone who, even as a bystander only heard and saw, as an equipped vehicle accelerates with it, will share the excitement. But there is also a problem, namely
the additional charge. Meanwhile, e.g. a direct shift gearbox at VW has reached exactly the extra charge of a four-wheel drive.
Is it possible to do it more favourable? Of course not with exactly the same effect but still. Meant is the electronic clutch, also called e-clutch. It makes the clutch pedal to an electronic sensor, the, however, quite
convincingly gives the impression when activated, you have an quite ordinary under the left foot
The rest is slightly surprising, because there is now (still) no servomotor directly in place of the central slave cylinder, but connects this with the master cylinder. The hydraulics is therefore maintained. Now, either the
servomotor can alone engage/disengage the clutch or modify by the actuation of the driver. In difficult situations, for example, when starting with heavy loads in the mountain, the adjustment range will be expanded.
Possible for the future would be also to prevent unfavourable warming caused by too timid throwing into gear by intervention in this engaging action. Think additionally to the truck sector, where engagement is mitigated
under high loads by a kind of hydraulic clutch. Here, the electronically controlled clutch could replace the lighter cases perhaps more cost-effective.
|Less wear by intervention in the coupling process.|
Actually, this clutch should be able to make any starting operation successful, but the developers are not yet as far. They have focused at LUK (Schäffler) on coasting. So, when the motorist release the accelerator, the
engine brake will not effective, but the engine will uncoupled and stops, a kind of start/stop while driving. Of course, it drives again, if one accelerates.
|No mechanical modifications required on the drive train.|
Bosch still goes one step further and offers the system for stop-and-go case of traffic jams. So you need not disengage the clutch every time, engage the gear and release the clutch, when it moves on again. By the way,
you know that there was such a thing in the old days already in the form of a centrifugal clutch in the Citroën 2CV? You could keep the gear
and restrict on accelerating.
|Without a clutch pedal, it would also work ...|
The current system of course is no more only mechanically, although the electronics starting up also not yet perfectly mastered. When the electronic clutch remains suitably priced, it is definitely worth a thought as an
extra. In it are even more opportunities up to some kind of half or even fully automatic clutch. One thing is certain though, changing gears without interruption of traction as with the direct shift gearbox will not be possible
with it. 11/15