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Old 07-16-2010, 04:50 PM   #11 (permalink)
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These new dual clutch auto improve on the automatic trans by removing a lot of the power losses through no torque converter and some even no oil pump . You can let it auto or manual shift it, at least this articles seems to imply that.
Ford also implementing start/stop tech, were engine shuts down at stops, like waiting for red light .

DailyTech - Ford Powershift Gearbox Coming in 2010, Brings Clutchless Shifting


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Old 07-16-2010, 05:59 PM   #12 (permalink)
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JeepNmpg2 - That's because if you kill the ignition without taking the tranny out of gear, you're just forcing DFCO. The engine is still spinning, as is the tranny pump. The tranny doesn't know or care that the engine isn't still running. When you turn the ignition back on, the fuel and spark comes back, and the engine continues running normally.
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Old 07-16-2010, 06:13 PM   #13 (permalink)
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Quote:
Originally Posted by DailyTechArticleMentionedAbove
The weight reductions on the Focus's gearbox alone will account to a 9 percent increase in fuel economy, according to Ford.
I'm skeptical about this statement
Maybe weight and rotating mass? If dropping 30 pounds (cited in article) equated to 9% increase in FE in other cars, everyone would keep their cars as empty as ecomodders/drag racers.

Either way, very exciting transmission option. I could even handle it, and I'm excited to hear how they do the shut down when idling option - how long will it delay from when you release the brake pedal to when your car starts going?...
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Old 07-16-2010, 06:54 PM   #14 (permalink)
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Quote:
Originally Posted by gascort View Post
I'm skeptical about this statement
Maybe weight and rotating mass? If dropping 30 pounds (cited in article) equated to 9% increase in FE in other cars, everyone would keep their cars as empty as ecomodders/drag racers.

Either way, very exciting transmission option. I could even handle it, and I'm excited to hear how they do the shut down when idling option - how long will it delay from when you release the brake pedal to when your car starts going?...
Yeh , I think that is a mistake, as in another article (same site ) it claims Ford says 9% for the new DC 6 speed trans total fuel improvement . which is pretty impressive, you will get better performance and economy .
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Old 07-16-2010, 09:46 PM   #15 (permalink)
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Probably .9 percent.
Released by a math-challenged publicity specilist is my guess.
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Old 07-26-2010, 03:59 PM   #16 (permalink)
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Quote:
Originally Posted by basslover911 View Post
So i don't know if a lot of you know, but the new ford fiesta gets better gas mileage with the new doulbe clutch automatic transmission than what it gets with the regular manual (stick shift)
That's not uncommon for dual-clutch transmissions.
Even the BMW Z4 has better FE with its DCT - around 5% in the Euro-cycle.
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Old 07-26-2010, 04:19 PM   #17 (permalink)
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I'm not terribly excited about the dual clutch setupm but it's way better than a regular automatic, and should be able to bump start with a bit of logic though (it should be fine to bumpstart it given it IS a glorified manual) so I wouldn't be too put out if my next car had one.

I think overall it is a good thing. You would have redundant clutches if something happens to one, if it is slipping, just drive home using 2nd, 4th, and 6th (or 1st, 3rd, 5th). You should get more reliability than a regular manual trans, once it's all sorted, but it will be a few pounds heavier and likely still have more losses then a well managed stick shift.

edit: found a picture:
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Old 07-27-2010, 03:44 PM   #18 (permalink)
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I wonder how much more it would be to replace the clutch on those transmissions??

Then again.. They might last longer since you use each one half of what you would normally use them...
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Old 07-27-2010, 04:10 PM   #19 (permalink)
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Is the automatic flat-towable? If not then the manual is more hypermiler friendly, if you know what I mean.
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Old 07-27-2010, 08:33 PM   #20 (permalink)
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It *should* be flat towable, as it's just a specialized manual tranny.

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