Ducati Introduces the Desmodromic Variable Timing Technology [Video][Photo Gallery]

http://www.autoevolution.com/news/d...ming-technology-videophoto-gallery-87751.html

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Seem like car tech is finally coming down to motorcycle.


cant wait for direct injection.... the NC would get like 80-90 mpg with it.

Isn't that exactly what VTEC is?

VTEC is just variable valve timing. Desmodromic (sp?) valve systems use a pair of cams to open and close each valve, so no valve springs and no chance of ever floating valves or having them hit a piston. It would seem Ducati had added that variable aspect of things to it's Desmo valve system. Ducati is the only engine builder I know that uses a Desmodromic valve system.

My parents next door neighbor just explained the Ducati valve train to me about two weeks ago (he has a Ducati). I thought it was genuis. I wonder why no one else has done it?

Let's hope we never see the direct injection. There are so many problems with that system in the automotive application. Without fuel spaying on the back of the intake valves they collect contaminants that collect on the back of the valve and will eventually cause the valve to stop working. Some of the import engines are fixing this by adding an additional fuel injector on the throttle body. Really doesn't make a whole lot of sense. Engines without the addition injector have to have the intake valve cleaned often as regular maintaince.

itlives said:

My parents next door neighbor just explained the Ducati valve train to me about two weeks ago (he has a Ducati). I thought it was genuis. I wonder why no one else has done it?

Click to expand...

Too expansive to produce and no more interesting for hight RPM regarding current valve spring quality. In addition : hard to adjust!

Papamike said:

Too expansive to produce and no more interesting for hight RPM regarding current valve spring quality. In addition : hard to adjust!

Click to expand...

Thanks Papa. Just shows to go you how much I know!