PDK

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Dual-clutch transmission

A dual-clutch transmission, (DCT) (sometimes referred to as a twin-clutch transmission or double-clutch transmission), is a type of automatic transmission or automated automotive transmission. It uses two separate clutches for odd and even gear sets. It can fundamentally be described as two separate manual transmissions (with their respective clutches) contained within one housing, and working as one unit. They are usually operated in a fully automatic mode, and many also have the ability to allow the driver to manually shift gears in semi-automatic mode, albeit still carried out by the transmission's electro-hydraulics.

History

This type of transmission was invented by Frenchman Adolphe Kégresse just before World War II but he never developed a working model. The first development of the Twin Clutch or Dual-clutch transmission started in the early part of 1980 under the guidance of Harry Webster at Automotive Products (AP), Leamington Spa with prototypes built into the Ford Fiesta Mk1, Ford Ranger & Peugeot 205. Initially, the control systems were based on purely analogue/discrete digital circuitry with patents filed in July 1981. All of these early AP Twin Clutch installations featured a single dry clutch and multi-plate wet clutch. Following discussions with VW/Porsche, DCT work continued from Porsche in-house development, for Audi and Porsche racing cars later in the 1980s, when computers to control the transmission became compact enough: the Porsche Doppelkupplungsgetriebe (English: dual-clutch gearbox) (PDK) used in the Porsche 956 and 962Le Mans race cars from 1983, and the Audi Sport Quattro S1 rally car.

PDK (Namibian music group)

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PDK is an all male trio band from Namibia. They started off as dancers and were known as The Action Boys. Later they changed their name to Action Geez. Now they perform under the name of PDK which represents the initial of their first name. The group has performed in the Nambian Annual Music Awards. They have also performed in several other reputed award shows and events. Patrick is the lead singer of the group while Dion has a unique style. Kamtonyo is a median combination of the two. The group is known to take inspiration for its music from reality.

History

Patrick, Dion and Kamtonyo are a Namibian Kwaito trio popularly known as PDK. The group was officially launched in 2006, under the Omalaeti Music label. The name PDK is made up from the first letter of the member's names Patrick, Dion and Kamtonyo. Patrick Mwashindange was born at Onanjaba village in Ohangwena region , in the year 1985. Dion Auala was born in Luanda, Angola,in 1986 and Christian "Kamtonyo" Andreas was born in 1987, in Oshakati. All the group members schooled at Oshakati Senior Secondary School and that is where they all got to know each other.