Today we made the existence of the gearboxes dual-clutch, but what is certain is that just take a few years available to the mass market. The Volkswagen Group was the first consortium in putting them on the market, and in its bosom is your source. What you may not know is that the origin of the boxes of the double clutch is in Porsche, and the designation PDK is much more ancient that “DSG”. Today, we take a trip back in time to the dawn of the gearboxes dual-clutch…it’s the era of Group B!
it was Only possible to mount on racing cars when the miniaturization of the electronics was accomplished.
The first patent of the gearboxes dual-clutch are prior to the Second World War, but were never put into practice. The real development started in the 80’s for Automotive Products, under the supervision of Harry Webster. After being patented in 1981, the development was sold to Volkswagen/Porsche, interested in applying them to your competition vehicles. Under the mandate of such a Ferdinand Piëch – then an employee at Porsche – began their adaptation to the Porsche 956 and 962.
Another application with the Motorsport of those primitive boxes PDK developed by Porsche was the Group B. The Audi Sport Quattro S1 began to mount at the end of the year 1985. They were boxes of five relationships, with bathroom of oil for their clutches multidisk, and were simply known by the public as well as automatic gearboxes. These PDK allowed the Audi Group B change gear without lifting your foot from the accelerator, in a record time. Not had gearbox more effective in the world of competition in the mid 80’s.
By that time, the programs of the competition of Audi and Porsche were dependent on the same person: Ferdinand Piëch.
The Audi Sport Quattro S1 were machines incredibly fast. With its engine 2.1 cylinders, supercharged over 500 HP, and the gearbox PDK, could do the 0 to 100 km/h in 2.6 seconds. Their battle only 2.204 mm turned him into a car nervous, which required the hands of gold in spite of having an effective system of all-wheel drive permanent. Was the great Walter Röhrl which premiered in November of 1985 Audi Sport Quattro S1 with box PDK in the Semperit Rally in Austria.
the victory of The Sport Quattro S1 E2 – Evolution, in a category almost without regulation – it was devastating, finishing at 19 minutes of the next competitor. In the video you can check the gear changes are almost instant. gear Changes that confused his co-pilot, that was lost in their own notes, not accustomed to such a pace. In the Rally Lombard RAC of England, Rörhl not came to end, leaving the path ahead of time. The German pilot blamed the box PDK its excessive pace on the stage.
Ferdinand Piëch introduced to the mass market boxes DSG with Volkswagen Golf R32.
legendary Dieter Basche – one of the engineers of Audi Motorsport responsible for the project Sport Quattro – reached its physical limit with the Sport Quattro S1 E2 and gearbox dual clutch. After a speedy stage on gravel in Greece got out of the car and said “no more”. The season 1986 of the rally of the Group B was fateful. Several pilots and spectators lost their lives: the consensus was that the cars were too quick. The ban of Group B came to a halt at dry development of the boxes, KDP.
Although they were used in resistance over time, not thought in its applications to the mass market. It was in 2003 that the Volkswagen Group was surprised with two boxes of change of double clutch, presented as a great novelty in two cars of pure image: the Volkswagen Golf R32 and the Bugatti Veyron. can Guess who was behind these two projects? The very Ferdinand Piëch, that closed the circle started by the Porsche 956 in the distant year 1983. Today, millions of vehicles of all kind and brand to use this type of gearboxes.
Source: Black Flag | Urquattro