Zeroshift

[OSFlanker]

Manual, automatic, semi-automatic, sequential straightcut. Now a new gearbox technology is being developed for all types of usage - from roadcars, racecars to lorries. Check out the website for more info : www.zeroshift.comThe Zeroshift's Transmission Technology working under the Patented Zeroshift Principle is able to transfer power from the engine to the driven wheels without interrupting torque during changes of gear ratio.Compare the different velocity curves :BMW M3 SMG :

Audi A3 2.0 TDi DSG :

TVR Cerbera equipped with Zeroshift prototype :

As we all have read, the DSG works by having 2 clutch and so another is always engaged, enabling smooth upshifts. Zeroshift works on the same principle but somehow eliminates the loss in torque, however temporary.I just got myself the June 2005 issue of Racecar Engineering which has an article detailing Zeroshift's technology. Excellent bedtime reading

 

[wirelessjunkie]

Looks like the yellow bird is going to be a pretty fast machine.

 

[schone]

wait.. so technically how does it work - to eliminate the shift? Surely it's a "minimal shift time" as opposed to "zero shift time" ? Or is it true zero shift?

 

[OSFlanker]

It is true zeroshift, I think. Still trying to make sense of the article in Racecar Engineering. Since I have to background in engineering, it takes time to digest what's being described!

The technology is based on a conventional "dogbox" with modified gear engagement mechanisms.

 

[ALBundy]

You sure you are not one of those who failed the pre-engineering courses and later decided to be an accountant? :nyehehe: :rofl: *cabutzzzz*

 

[E34EuroTouring]

It does look like an adaption or variance of the cabot box thats doing sequential shifts used in WRC cars.

So, its not zero time shift. But zero shifting since it could do the automatic shifting. ie based in a shift request rather than the shifting action.

Come to think of it, its just a slight different implementation of the Cabot box!.