I am 100% sure that this mechanism will not work because of the main reason - there is no friction cone to ensure alignment between the shaft speed. The given mechanism would also ensure shifting with big beats, which it self is unlikely to be able to withstand, and it would be gearbox breaking. Gears without a clutch can be switched by changing the engine speed (in short), but without changing the engine speed is not possible to switch gears! The clutch is necessary in any case!!!
That's my feeling as well. I feel that our attention is being drawn to the way the gears are being switched, and away from the way the system acomplished this without any consideration to effects of torque on the overal drive train as the gears are changed.
maybe you would need it for downshifting, the way i see it, this system eliminates the torque interruption during upshifting, so the vehicle is always accelerating... That would also be excellent for launch in a standing and/or rolling start...
although am very positive with zeroshift but it is known fact that disengaging dog clutches under load induces vibrations in the driveline. Zeroshift should do more NVH-drivability research
The clutch is necessary because of the need to disconnect the engine from the transmission when shifting, otherwise they will not be switched because the primary and secondary spindle speed is different and they need to align with each other in proportion to the ratios of gears including synchronization mechanisms, which provide smooth speed adjustment, which a video given mechanisms is unable to provide. TEXT CONTINUED ...
I've tried to understand this, but in vain. All I see here is something that's attempting to replace the synchromesh mechanism... So where does that leave the clutch?
+Gabriel Romero It can cut CO2 emissions increase fuel economy and smooth shifting. I think the point is not to create a better transmission but to sell one that is more high tech. The ones who don't know about transmissions and want new smoother tech are pushing the car industry in this direction. I hate to say it but like it or not we might see this tech in more cars.
This setup has no slippage and the shift occurs with zero delay. Synchro's on the other hand, take time to spin the gear up to speed and can do so only when power is not applied.
it does work!!! it's being used in the honda motogp bikes (among other machines)
I am 100% sure that this mechanism will not work because of the main reason - there is no friction cone to ensure alignment between the shaft speed.
The given mechanism would also ensure shifting with big beats, which it self is unlikely to be able to withstand, and it would be gearbox breaking.
Gears without a clutch can be switched by changing the engine speed (in short), but without changing the engine speed is not possible to switch gears!
The clutch is necessary in any case!!!
In my mind, if I can imagine it in action, then I understand it; but as yet I'm still watching these videos trying to figure it out.
That's my feeling as well. I feel that our attention is being drawn to the way the gears are being switched, and away from the way the system acomplished this without any consideration to effects of torque on the overal drive train as the gears are changed.
Can this be used in a 3 pedal manual transmission too? Or it's exclusive to automated transmissions?
maybe you would need it for downshifting, the way i see it, this system eliminates the torque interruption during upshifting, so the vehicle is always accelerating... That would also be excellent for launch in a standing and/or rolling start...
Add a sealed torque converter, for a soft coupling...
although am very positive with zeroshift but it is known fact that disengaging dog clutches under load induces vibrations in the driveline. Zeroshift should do more NVH-drivability research
The clutch is necessary because of the need to disconnect the engine from the transmission when shifting, otherwise they will not be switched because the primary and secondary spindle speed is different and they need to align with each other in proportion to the ratios of gears including synchronization mechanisms, which provide smooth speed adjustment, which a video given mechanisms is unable to provide.
TEXT CONTINUED ...
I've tried to understand this, but in vain.
All I see here is something that's attempting to replace the synchromesh mechanism...
So where does that leave the clutch?
I appologize for my bad english - some parts of this tekst and terms were translated by Google translate.
so, no clutch needed when shifting?
no
I still not understanding what is the advantage over a simple dog clutch syncro...
No need to disconnect the engine from the transmission to shift, no torque loss etc..
+Gabriel Romero It can cut CO2 emissions increase fuel economy and smooth shifting. I think the point is not to create a better transmission but to sell one that is more high tech. The ones who don't know about transmissions and want new smoother tech are pushing the car industry in this direction. I hate to say it but like it or not we might see this tech in more cars.
This setup has no slippage and the shift occurs with zero delay. Synchro's on the other hand, take time to spin the gear up to speed and can do so only when power is not applied.