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06-09-2007, 05:31 PM | #1 |
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DCT?
This is most likely a repost, so sorry, but i don't really know what this DCT is. What does it do, and when is available on the M3?
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06-09-2007, 05:39 PM | #2 |
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DCT stands for Double Clutch Transmission, and it will be the replacement for the SMG semi-automatic gearbox on the M3. At launch, the E92 M3 will only be available as a six speed manual gearbox. In April next year BMW will offer the E92 M3 with the option of a 7 speed double clutch semi-auto gearbox called 'M DCT'.
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06-09-2007, 05:50 PM | #3 | |
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DCT
Quote:
Unlike manual or SMG (also called AMT, Automated Manual Transmission), the Dual Clutch Transmission never has to let up on power delivery during shifts, and the shifts are at least as fast as SMG. So, it should have an advantage over those two in acceleration. The other advantage over SMG is that it is smoother under all conditions. VW/Audi calls their DCT "DSG". Here are some relevant articles on the future of transmissions for those interested: http://www.zeroshift.com/pdf/EAC906%2013.pdf http://newsletter.csmauto.com/4thQtr2005/?a=2 This is most likely the unit going in the M3 March or April next year: KEY BENEFITS - Optimized efficiency - Shifting without interruption of traction - Excellent comfort - Very quick and sportive shiftings possible SPECIFICATIONS Max. Torque Capacity - 600 Nm Weight (dry) - 79 kg Installation length - 660 mm Synchronization 1st, 2nd and 3th gear - dual cone 4th and 5th gear - single cone 6th, and 7th gear - dual cone Reverse gear - single cone Gear Spread Ratio - 6,8 Max. Gross Vehicle Mass/Gross Trailer Mass - 2500 kg/4500 kg Shifter System - hydraulic Miscellaneous - DCT dual clutch transmission http://www.getrag.de Click on Transmissions/Dual Clutch Transmissions, then from the popdowns on the right DCT/Inline/Over 400 NM Torque
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Greg Lake Oswego, Oregon, USA 2023 M2 Coupe - Brooklyn Grey/Cognac/CF, 6MT; 2020 MB GLE 450 |
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06-09-2007, 09:19 PM | #5 |
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Terminology
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06-09-2007, 10:13 PM | #7 |
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DCT
Either. Most have Manual and Auto modes. In manual, you shift via paddles or stick, but just don't need to use a clutch pedal. In Auto, it's, well, automatic.
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Greg Lake Oswego, Oregon, USA 2023 M2 Coupe - Brooklyn Grey/Cognac/CF, 6MT; 2020 MB GLE 450 |
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