Henning’s team felt that achieving the target torque capacity of 350 Nm with a dry clutch system would result in a larger and heavier package with higher moments of inertia, pointing toward inferior shift quality. An oil-cooled multi-plate clutch design would, on the other hand, allow greater torque capacity and a subsequent upgrading to 450 Nm for future and more powerful all-wheel drive derivatives. Specifically, said Henning, the wet clutch system is 10 kg lighter and has 50 percent less inertia than a dry counterpart would have been.
Perhaps even more importantly, Henning felt that a wet clutch arrangement was essential in order to ensure thermal robustness in “critical situations” such as when towing a trailer, giving an all-up train weight of over 3 tonnes, and when stopping or moving off on steep inclines. The likelihood of SUV-type derivatives, currently in the planning stage, was further reason to use a wet clutch to meet these particularly high demands.
Once again, gear pairs are combined so as to reduce complexity; gears five and seven, as well as four and six, each need only a single drive gear. Two gearset variants are offered, with the small gasoline models geared for a ratio spread of 7.16 and the larger diesel and gasoline versions giving a spread of 7.99.
Efficiency is improved by reducing churning losses in the gearbox via a baffle in the differential area. This also cuts down on foaming and, says Henning, leads to improved acoustics and a higher gearshift quality.
Mercedes DCT New-Generation Priorities - Emerging Technology
So the new A-class is no longer a rival for Polo and Fiesta, but now a rival for Golf, Focus, A3 and 1-series?
Lol..
What? It looks huge compared to the outgoing model. More like a rival for A3 than A1.
*I want that Astra VXR with 280 hp. Let's hope it doenst become expensive.
*
You mean this Opel Astra GTC OPC making 280 PS ?
Yes, I also think the new A Class has something in common with the Opel Astra.
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