pneumatic and electro-magnetic valves

This quote was taken from the thread Coates Rotary Valves (http://www.automotiveforums.com/vbulletin/showthread.php?s=&threadid=11278)

Originally posted by SaabJohan


F1 engines doesn't have electro-magnetic valves, they have a pneumatic valve train and they use camshafts (the pneumatics replace the valve springs since springs are too slow).
Electro-magnetic valves are today way too slow and takes too much power.


Is the pneumatic valve system just like little pneumatic pumps where the springs would be? Or is it a whole different system? Also, what about electro-magnetic?

Compressed N2 pushes the valves back down.

oh, duh. Me and not catching the most obvious things:rolleyes: . Thanks. :D I think I'll have to look for some for my car when I drive.:bloated: