Do you have any idea how it works?
:heyyou: Where'd you copy and paste this from?Pneumatic valve springs are metal bellows filled with compressed air occupying roughly the same space of metal springs used to close valves in high-speed internal combustion engines.
Reducing the number of moving parts that can fail is good engineering. Racing engines often failed at high speeds because mechanical springs were unable to close valves fast enough, leading to engine failure when pistons struck incompletely closed valves. Renault's innovation was to replace steel springs with light weight compressed air bellows that could respond more quickly and reduce the possibility of valve crashes, other than from leaking bellows. Additionally, the amount of seat tension required to keep a coil sprung valve under control results in peak lift loading drastically higher, with added stress to the entire valvetrain as a result. Pneumatic systems, sharing a common reservoir of pressure retain a more static level of force, controlling the valve effectively, without any attendant peak lift load increase. To avoid bellows failures, air springs are replaced often
I am wondering that as well Andy, I also wander if there are any possibilities of the same "floating" with the bellows valve as there are with standard valves.:dontknow:I wonder why it's just now getting into MotoGP technology. Is there any power advantages to this design or is it strictly for reliability?