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New Chrysler, Getrag Dual-Clutch Transmission to Debut in International Markets
14 April 2008
Chrysler’s new Powershift six-speed dual-clutch transmission—developed in partnership with Getrag—will make its debut this spring in international markets on the all-new 2009 Dodge Journey, the 2009 Dodge Avenger and the 2009 Chrysler Sebring, mated to a 2.0-liter turbo diesel. Chrysler says that the new transmissions will deliver a fuel economy improvement of 6%.
Chrysler’s commitment to dual-clutch transmission technology is part of the Company’s powertrain offensive, announced last year. (Earlier post.)
Earlier in April, Getrag and Chrysler finalized the definitive agreements for the development, production and supply of Getrag PowerShift transmissions for Chrysler in North America.
Chrysler and Getrag will invest around $455 million in a new transmission plant in Tipton, Indiana. With around 1,200 employees, the plant will produce 700,000 dual-clutch transmissions annually for Chrysler. The plant is expected to be operational in late 2009.
The dual-clutch transmission technology improves fuel economy and CO2 emissions by reducing parasitic losses—first, by eliminating the torque converter, and second, through the use of synchronizers instead of shift clutches.
The dual-clutch transmission is an automatic transmission which utilizes dual launch and shift clutches with a manual transmission style lay-shaft gear arrangement, instead of a conventional torque converter and planetary gears.
One clutch drives the odd numbered gears and reverse, while the other clutch drives the even numbered gears. During shifts, the next gear is anticipated and pre-selected. Then one clutch is opened while the other is closed, allowing shifting without torque interruption. The result is quicker acceleration and refined shift quality.
Further, with the lay-shaft arrangement of gears, there is increased flexibility to optimize gear ratio selection for performance and fuel economy.
The all-new dual-clutch transmission does not require a torque converter to transfer engine torque to the transmission. Instead, it uses two wet multi-plate clutches. With the wet multi-plate clutch system, the clutch components are bathed in lubricating/cooling fluid in order to provide adequate thermal capacity.
The wet multi-plate clutch system uses hydraulic pressure to actuate the clutches and provide for gear selection. With this system, the power flow from the engine to the transmission is not interrupted during a shift, resulting in a power-on shift. This means that there is less torque disturbance than a conventional planetary automatic transmission with torque converter. Also, by eliminating the torque converter and reducing the number of shift clutches, parasitic losses are reduced leading to improved fuel economy.
April 14, 2008 in Transmissions | Permalink | Comments (13) | TrackBack (0)
Comments
Posted by: Rafael Seidl | April 14, 2008 at 12:21 PM
How about anti gravity? Is anyone working on that?
Posted by: John Sale | April 14, 2008 at 02:41 PM
I would hate to work as a marketing writer for a US automaker, trying to sell "new" technology in a market where the technology has been for sale several years. But then again most US drivers have no clue.
Posted by: Bill W | April 14, 2008 at 02:54 PM
"International markets"
Does this mean all the transmissions will be shipped overseas?
Posted by: Rich | April 14, 2008 at 02:57 PM
"International markets" is a phrase only a US company would ever dream up.That means it's going to be sold in Canada and Mexico.
Posted by: DS | April 14, 2008 at 03:38 PM
That's not going to "mesh" well.
Posted by: John | April 14, 2008 at 04:24 PM
Thanks, but I think I'll keep my CVT
Posted by: steve | April 14, 2008 at 05:03 PM
Chrysler certainly is talking a good game. I hope they can get these things done.
They face more resource and capital constraints than the bigger companies. But that may lead to doing more with less.
IMO they have little choice except to bet - as they are here - that there will be a profitable, near-term market for evolving vehicles. That is, vehicles that steadily get better mileage through mechanical refinements in engines, transmissions, and weight.
If the market shifts quickly to EVs and/or a variety of advanced hybrids I can't see how they can survive.
Posted by: K | April 14, 2008 at 05:13 PM
Rafael
I worked with Chrysler International on various projects. The "International Markets" means outside the United States. Chrysler has made several attempts to make their vehicles more attractive in Europe by adding equipment that is popular in Europe like diesel engines. This particular diesel engine will not be sold in the US per the current plan.
Posted by: rca | April 14, 2008 at 05:18 PM
I think the 6 speed dual clutch transmission has a future in one form or another. Automakers have to be careful introducing something different to the buying public in the U.S. Buyers want dependability at the top of their list.
Posted by: sjc | April 14, 2008 at 07:26 PM
@ DS, rca -
I know what the phrase means, it just highlights how insular Chrysler's thinking is. There's the US and then there's "everyone else", as in the "here be dragons" found on medieval maps. Other places have names, too.
Posted by: Rafael Seidl | April 15, 2008 at 05:13 AM
That is all part of growing up as a people. There was the U.S. and everyone else and then a global market came along.
For much of our early years, America thought of itself as self sufficient. Then we became needed to settle world conflicts. Now we are part of a global economy. I think this trend will continue as events unfold.
Posted by: sjc | April 15, 2008 at 07:23 AM
The Japanese firms helped achieve a reputation for quality in its foreign markets by the simple expedient of building a year's production in its domestic market. They worked out the bugs of a first year model, and before releasing it as a new car to its foreign customers.
Chrysler is doing the a similar kind of effort. Only it is reversed to fit Chrysler. Chrysler is overwhelmingly a US North American auto maker with a tiny presence in Europe. So it is introducing its new products in Europe to "debug" them, and measure their acceptance.
The dual-clutch automated manual transmission capacity it has installed, is sufficient for half its total annual production. Add its share of the GM, BMW, 2-mode hybrid capacity to its present CVTs capacity, and there is essentially all its capacity incorporated in modern high efficiency transmissions.
Chrysler is investing in its product and Cerberus has not started a no R&D, asset stripping mode, as all thought. That does not mean that they won't; but I offer the current evidence that they have not done so to date.
An axle modernization venture is already producing lightweight, stronger axles for Mercedes and itself and that is sized with a capacity for its entire annual vehicle production.
The modern V6 for both Chrysler and Mercedes are having their tooling bought and installed in new factory facilities, even now. These will replace all their present V6s and many of their V8s. they will start appear in the 2009 or 2010 model years.
Under Daimler they did the same with their I4 (and I3) World engines shared with Kia and Mitsubishi, in the last three years. These all alloy lightweight high featured engines provide the requisite features for conventional, hybridization,(Atkinson cycle mode), and positioned for the addition of HCCI partial diesel operating mode.
Cummins a diesel leader, is preparing a line of T2B5 diesels for Chysler's truck lines. The 2007 Dodge Ram diesel was the first compliant T2B5 diesel; with technology required in the 2010 model year; fully three years early.
So all their IC engines and entire drive trains, are or will be modern state-of-the-art within two years.
Posted by: stas peterson | April 16, 2008 at 03:19 PM
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"International markets" is a phrase only a US company would ever dream up.