When you are in 1st gear, the clutch is already engaged for the 2nd gear. It uses two separate clutches for odd and even gear. The pdk transmission utilizes the same constantmesh gear set and synchronizer configuration as porsches modern manual gearboxes, but there are two separate transmission input shafts, each with its own multiplate clutch pack. Pdk gear oil 9972 series carrera, carrera 4, carrera. The pdk clutches are wet clutches and sealed into the gearbox for the design life of the unit. Click above to watch porsches pdk gear box in action. Test drive the car and look for any problems with the gearshift. Porsches new pdk transmission is more efficient than a regular automatic because its effectively a manual gearbox with two computer controlled clutches. Unlike a traditional hydraulic automatic, which uses a fluid coupling called a torque converter, the pdk is essentially a conventional 7speed manual gearbox with two electronically controlled clutch packs. No torqueconverter automatic can match its efficiency.
A dual clutch transmission dct sometimes referred to as a twin clutch transmission or double clutch transmission is essentially a type of automated manual transmission in automobiles, closely related to a manual transmission. Porsche pdk new doubleclutch gearbox in detail sports. However, the new model gets a beefedup version of porsches sevenspeed pdk twin clutch automated manual as an option. Only that the 7speed pdk replaces the 5speed automatic not that its based on an automatic the gearbox found in the mb sl63amg is a automatic which has had its torque converter replaced by a clutch clutches but this one, like the dsg in vw and the m3 gearbox.
As first gear is engaged, the 246 clutch is disengaged and the second gear cogs are engaged. The 202mm outer clutch is attached to the solid inner shaft. Okay, as much as id prefer that our longterm 20 porsche 911 was equipped with the conventional. Thanks to the extra power and a newly adapted pdk dual clutch transmission, the macan gts can accelerate from 060 mph 096 kmh in as little as 4. Maybe it has separate oil circulation for the clutch. What makes the tiptronic special is the software brain.
Two clutches ensure that shifts take place in next to no time. Similar in principle to the volkswagen dsg system that pioneered the increasingly popular twinclutch technology in road cars, porsches pdk was first used on a porsche race car in 1983. The parallel shift gearbox psg is a variant of the twin clutch gearbox. Pdk dual clutch transmission is brilliant february, 20. The twin clutch sevenspeed upshifts about as quickly as you can say porschedoppelkupplungsgetriebe. Starting at the bellhousing end far left, the pdk gearbox uses two concentrically mounted wet clutches connected to two separate input shafts. Pdk twin clutch transmission is the perfect partner for this lusty. Make sure their maintenance is up to date, and that the car has not suffered undisclosed accident damage which may have resulted in gearbox failure or damage. The dual clutch transmission, also known as the direct shift gearbox dsg or twin clutch. To avoid pulling a glottal muscle, just call it pdk and also call it a vast.
At the appropriate time, the 5 clutch is disengaged and the 246 clutch. Aaron gold is a connoisseur of all things automotive, with more than 20 years experience as a journalist specializing in the automotive industry. In this territory i have no problems with this type of dual clutch gearbox. A dual clutch transmission, commonly abbreviated to dct 1 sometimes informally referred to as a twin clutch gearbox, double clutch transmission, or similar variations thereof, is a differing type of semiautomatic or automated manual automotive transmission. The manual gearboxes are extremely reliable, and so is the pdk twinclutch unit. This is important as the pdk gearbox software will otherwise automatically shift up or down even in sport plus mode. Nearly 50 years later, porsches dual clutch, twopedal pdk gearbox is far better than halfbaked. A pdk gearbox uses hydraulically actuated wetclutch packs, one. Porsches sevenspeed pdk dualclutch automated manual transmission and its allnew sevenspeed. Porsches doppelkupplung pdk dual clutch gearbox is every bit as important as the sweetly smooth twin turbo v6funny to give a gearbox first mention ahead of the engine, but its. It transmits power to a torsen center differential biased 60 percent rearward. How dsg works understanding dualclutch transmission. Porsches double clutch which is quite literally what doppelkupplung.
More recently, the mitsubishis evo x and nissans gtr come in twin clutch gearbox. The engine and gearbox of the 992 carrera s cabriolet are identical to the coupe. On request, the driver can also change the gears manually by using the shift paddles. Porsches new pdk transmission is more efficient than a regular automatic because its effectively a manual gearbox. They are supposed to be unbreakable so if it continues. With the push of a paddle shifter on the steering wheel, you go from 1st to 2nd gear. Technically, the pdk gearbox not only has one clutch, but two. The pdk is a dual clutch transmission similar to gearboxes used by other manufacturers. The 911s industryfirst 7speed manual gearbox not available on turbo models works beautifully but we prefer porsches spectacular twin clutch pdk automatic transmission, which bangs off gear changes. Similar in principle to the volkswagen dsg system that pioneered the increasingly popular twin clutch technology in road cars, porsches pdk was first used on a porsche race car in 1983. Currently the pdk is made by zf friedrichshafen, it shares zeros parts with the borgwarner unit. Pdk offers a range of shift strategies within its software, from a total consumptionoptimized approach to one that gets the. A dualclutch transmission dct is essentially a type of automatic transmission in automobiles. Everything you need to know about pdk transmission turbo kraft.
The dsg was developed by borgwarner same company that makes the haldex and vaq diffs, the pdk was developed by porsche decades before the dsg came out. And now the latest 911 with direct fuel injection comes with dual clutch 7speed pdk. It is a seven speed transmission available in both. But, get onto an open stretch of country road, put you foot down and. Pdk stands for porschedoppelkupplungsgetriebe or, porsche dual clutch transmission. Youve probably heard it called by many names in the car world, but the basic construction and working of all dual clutch transmission systems is pretty much the same. Everything about the porsche pdk dualclutch transmission. Porsche doppelkupplung dual clutch transmission pdk. Also, the 911 now comes with a new eightspeed pdk dual clutch transmission that offers greater cruising comfort and efficiency. Although usually operated in a fully automatic mode, many also have the ability to allow the driver to manually shift gears in semiautomatic mode. The ford unit is a sixspeed with one clutch acting on first, third and fifth gear, and the other used for second, fourth and sixth gear. A dual clutch gearbox, by contrast, uses two clutches, but has no clutch pedal. A dct is more similar to a manual transmission than a traditional automatic, but. Sophisticated electronics and hydraulics control the clutches, just as they do in a standard automatic transmission.
Torque distribution can vary from as much as 85 percent rear. The sevenspeed pdk transmission works like other twinclutch gearboxes. For example, at the end of the 1980s a porsche twin clutch gearbox pdk was. One clutch handles the odd gears, 57, and the second engages 246. In a dct, however, the clutches operate independently.
A sevenspeed manual gearbox comes as standard, with the pdk twin clutch transmission an option. It has two drive shafts gearboxes, and each with its own clutch, which alternately connects the gearbox. The gears were already engaged when the driver changed gear and drive was not lost during the process. Its more than just an automatic, but what is porsches pdk gearbox and how does it work. Porsches unveiling of the 2009 911 carrera also came with the introduction of the new pdk sevenspeed twin clutch gearbox.
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