r15mohd
r15mohd
Frazier is so ugly that he should donate his face to the US Bureau of Wild Life. -- Muhammad Ali
View My AgentPage

Print this Page | Digg It | del.icio.us

Tags: bmw m3 v8 smg dct 7-speed 7 speed

Tag Link: bmw m3 v8 smg dct 7-speed 7 speed

M-Power! Five Things We Know About BMW's Dual Clutch Transmission
Add another true automanual tranny to the growing list. Call it the M double-clutch transmission with DriveLogic. It's BMW's new 7-speed switchgear that's shipping with the new M3s, and likely will replace the divisive, largely poky and cumbersome -- that is, without some serious futzing -- M-Sequential (SMG / SMG II) automated manual. The SMG system uses a high-pressure hydraulic actuator to shift gears, with the latest version (i.e., SMG II) offering five automatic modes and six manual modes and shift times in around 80 miliseconds. In dual-clutch systems, like BMW's new system and VW/Audi's DSG, one clutch handles gears 1, 3, 5, 7 (and reverse) and the second handles 2, 4, 6 -- they work alternately, engaging and disengaging in a complex dance that allows for uninterrupted upshifts at speeds of a few milliseconds. An algorithm takes into account throttle position, engine speed, road speed and shift mode in use when calculating shift management. What else do we know about the new M double-clutch transmission with DriveLogic? Click through.


1.) It offers the same collection of modes as SMG, allowing the driver to dial in a range of response patterns, from low-torque, second-gear starts on snow and ice, to comfort, to track day.

2.) It's the first dual-clutch box to be designed for engine speeds of up to 9,000 rpm, with a transmission fluid cooler to lengthen component life.

3.) Like the new Nissan GTR (but unlike the latest F1 cars), it has launch control. How does launch control work? Take it, BMW:

...all the driver has to do with the car at a standstill and in driving program S6 is move the sports shift lever to the front and hold it in this position. Then, as soon as the starter flag symbol comes on in the instrument cluster, the driver just presses down the gas pedal to automatically obtain the ideal starting speed on the engine. Pressing down the brake pedal lightly with his left foot, in turn, the driver can prevent the car from rolling forward, and by briefly tipping the cruise control lever he is able to finely adjust the desired starter speed. Then, after letting go the selector lever, the BMW M3 accelerates with optimum performance and with slip on the rear wheels controlled by the clutch -- if the driver wishes, all the way to top speed.
4.) Low-speed assistant, gradient detection.

5.) It sounds like a whole lot more fun than SMG.

 Read Article
M-Power! Five Things We Know About BMW's Dual Clutch Transmission



Comments:

Images hosted in your AgentSpace can now be posted in the comments section using the following syntax (case matters):
[img]IMAGE URL[/img]
Example: [img]http://agent004.myautospies.com/users/150/Sample-Gallery/sample1.JPG[/img]
amazinBimmeramazinBimmer - 1/23/2008 3:43:31 PM
+5 BoostDrop the Boost Up the Boost
as usual... the best...9000 rpm... wow


reply to this comment
AnthonyAnthony - 1/23/2008 3:48:58 PM
+4 BoostDrop the Boost Up the Boost
Thank goodness the SMG is gone. Sounds like BMW engineers redeemed themselves.

reply to this comment
TheSailorTheSailor - 1/24/2008 12:27:06 PMView My AgentSpace
+1 BoostDrop the Boost Up the Boost
Oh yes... That SMG-tranny wasn't really a good thing!


JRobUSCJRobUSC - 1/23/2008 10:17:27 PM
+2 BoostDrop the Boost Up the Boost
according to BMW it drops 0.2 seconds off the 0-60 times. Road and Track just got 4.1 seconds out of the manual M3, Car and Driver 4.2 seconds. So it looks like 4.0 seconds, maybe even 3.9 seconds, are attainable with launch control.

reply to this comment
S4cabriofoxoneS4cabriofoxone - 1/23/2008 5:34:33 PMView My AgentSpace
+5 BoostDrop the Boost Up the Boost
I WANT THIS!!!

Thank you, BMW, for doing what Audi wouldn't do!

This will probably propel the M3 from 0-60mph in only four seconds flat... drool.

reply to this comment
iamdabest1iamdabest1 - 1/23/2008 6:38:26 PM
+1 BoostDrop the Boost Up the Boost
its about time. i have a 2005 m3 with SMG. great concept, but not fluid.
the car jerks like crazy at low speeds. hopefully this new system fixes all the faults.

reply to this comment
weaponXweaponX - 1/23/2008 9:07:35 PM
+1 BoostDrop the Boost Up the Boost
SMG is only poky and cumbersome if you don't know how to operate it. If I shift below 5000 RPM on my M5, especially out of 1st, then it can be jerky. But, if shifting is done at higher RPMs, and I lift momentarily before shifting, it's smooth (that's configured in the fastest shift setting).

Having said that, the new M clutch will be a nice improvement. And I'm looking forward to it on the next gen M5.

Clutchless manuals are magnificently efficient, and I don't think I'll ever own a traditional 6-spd car again.

reply to this comment
StickShiftCamryStickShiftCamry - 1/23/2008 10:52:24 PM
+1 BoostDrop the Boost Up the Boost
my '06 530 SMG has some type of launch control procedure, but never got it to work rite, the manual even says something about "race car like acceleration". Nothing beats a true manual...

reply to this comment
LexSucksLexSucks - 1/24/2008 9:44:08 AM
+1 BoostDrop the Boost Up the Boost
How much do you guys want to bet that Launch-Control doesn't make it to the U.S?

reply to this comment
TheSailorTheSailor - 1/24/2008 12:30:52 PMView My AgentSpace
+1 BoostDrop the Boost Up the Boost
This is why you have to love the ongoing power wars between the big german manufacturers. It means that the cars are constantly getting better and better... This tranny sounds quite spectacular to be honest! One thing is to make a dual clutch transmission, that is an engineering achievement of proportions, but to make it possible to harness all that power and go to 9000 revs is just insane! Just think about it; components spinning 150 times A SECOND just inches away from you... Damn...

reply to this comment
4TehNguyen4TehNguyen - 1/24/2008 6:49:26 PM
+1 BoostDrop the Boost Up the Boost
you need launch control on a 295 ft lbs car?

reply to this comment
To post a comment for this story, you must first Login.

If you do not have an account, you will need to Register (It's Free!).

Most Recent Stories
Honda Launches Auto-Max Railcar FleetAmerican firm to supply Audi superchargersYou've Hit the Big Time - Money No Longer is an Object: What Cars Will YOU Be Driving?Ford Escape plug-in prototype shows potentialFord's Model T celebrates 100 yearsMercedes wants a Grand Prix team of its ownBat-tastic! Batman’s Rides from The Dark Knight, Up Close and Personal2008 Volvo C30 WTCC Green RacerCarlsson Mercedes-Benz Cl 65 Looks AMAZING!Which retro ride is the coolest? Challenger, Camaro or Mustang. And how dead IS retro?Mercedes - Benz Review: The GLK, CLC Sport Coupe And SLK-ClassComparison - 2008 Ferrari 599GTB Fiorano and 2008 Aston Martin DBS2010 Chevrolet Camaro OFFICIAL Pictures - The Wait is ALMOST Over!New Photos BMW 3 Series Touring2009 BMW 3 Series New High-Res Wallpapers2009 BMW 6-Series with New Sport Package2009 Maserati Quattroporte S - First DriveFirst Video Of The 2009 BMW 3-SeriesNew M3 Convertible: A disappointment? Audi R8: GT3 spec race car up for saleHonda Releases Civic Type S Fireblade ReplicaIncredible Mercedes SLR McLaren crash in QatarLeaked memo: 2009 Subaru Impreza WRX to get 265 horsepowerThe VW Up! could be changed front-wheel-driveExclusive iPhone Pouch Premiers At Mercedes-Benz Fashion Week Berlin Am I the Only Person Alive Bored Silly By the SLR McLaren?First Lamborghini Gallardo LP560-4 Delivered in USElfin’s Caterham Bashing ‘Type 5’100% Electric Mitsubishi i MiEV Confirmed in 2009BMW M3 vs. BMW 335iAudi RS5: Will it look like this?New BMW 7 And Mercedes S-Class Side By Side: S-Class Still The King?French Auto Spies Get Nabbed By Authorities-So Much For Freedom Of The Press?$27 Million Jaguar XJ13 Le Mans Race Car to Run at Bradford Classic Jaguar Tops J D Power CSI Study For Second Year In a RowThe First Crash of a Maserati GranTurismo (pics)GM dealers buy $1 million in GM stockCadillac CTS coupe and wagon to be produced in LansingSpy Shots: Mercedes SLR McLaren Speedster hits the NurburgringThis Just In: Not All HUMMER Owners Gas-Guzzling Jerks2008 Toyota RAV4 SR180 On Sale UK2009 Infiniti FX50 vs 2009 BMW X6 xDrive50i Subaru WRX STi Spec C - Spy ShotsThe Top 5 Most Beautifully Designed Cars from the Designer of the CenturyThe 2009 Honda Fit and the New American Way2009 Mitsubishi Pajero Sport Suv Unveiled at Moscow Show2008 Nissan Micra 25 Special EditionIs there an uglier pick truck made anywhere?Spy Shots: 2010 Acura NSX interiorMercedes boss confirms full turbocharged lineup within 3 years