pneumatic and electro-magnetic valves

[YellowMaranello]

This quote was taken from the thread Coates Rotary Valves

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?

[454Casull]

Compressed N2 pushes the valves back down.

[YellowMaranello]

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