0-gear, or 0-lag-gear

[is64fun]

i read that there will be a new type of transmissinon called 0-gear or 0-lag-gear something like that. it was claimed that it will be the fastest and the most comfortable gearbox off all times but availible after 2006. does anyone knows about this mysterious gearbox. but not CVT. something very new (claimed so)!!

[Wutputt]

A Zero Inertia Transmission? But that's just a special version of a CVT.

There are some other new developments I'm aware of, but all of them are special versions of the CVT concept.

[is64fun]

Originally Posted by Wutputt A Zero Inertia Transmission? But that's just a special version of a CVT. There are some other new developments I'm aware of, but all of them are special versions of the CVT concept.

yeah you are right. it was this yes. what is the difference then what is new? dou you know any link?

[Wutputt]

http://www.zero-inertia.com/


They use an extra flywheel and planetary gear set. The flywheel is used as energy buffer so the Zero Inertia pushbelt-CVT can have a better compromise between fuel economy and performance. Basically this CVT uses kinetic energy stored in the flywheel when the car has to accelerate so the engine doesn't has to rev much higher (unless of course the drivers puts the pedal to the metal) so fuel economy doesn't go bad.

[c0wb0y007]

and what about that other gearbox that Audi has developed, the multitronic ? Or how is it called ?

[Wutputt]

Originally Posted by c0wb0y007 and what about that other gearbox that Audi has developed, the multitronic ? Or how is it called ?

That's a chain belt CVT with a more advanced electro-hydraulic control then normal CVT transmissions.

I personally think both CVT and double clutch gearboxes (like the DSG, PDK, PSG) have a future. CVT's since they are very comfortable and have a potential to give a good compromise between fuel efficiency and performance. Double clutch gearboxes since they give a very dynamic feel and have a very fast shift potential. If the double clutch is a wet versions like with the DSG, they are also very comfortable (but not as comfortable as a CVT). Both have their advantages and drawbacks.

Btw, the double clutch gearbox was already invented in 1939 by a French engineer. But the first production version was Porsches PDK in 1985, also used in the Audi Quattro S1. But the first double clutch gearbox for mass production for passenger cars is idd Audi/VW/BorgWarner/ContiTemic 's DSG. In the near future LuK's PSG will also be introduced on the market. As opposed to the DSG it doesn't have a dual mulitplate wet clutch but a dual single plate dry clutch.

[gottacatchup]

Originally Posted by everso DSG is the future of transmissions.

hopefully not, i'm still hoping the manual can hang on, atleast till i die

[mindgam3]

I think it will.... semi autos are no where near as refined as the regular manual yet and its much easier to build a robust, smooth manual than it is for a semi. Manuals are also cheaper and much less complicated - i think the CGT proves it wont be obsolete for a while yet. You dont get the control you have with a manual either, you can feather a gear in when u need to - with a semi the gear is either engaged or not