Originally Posted by
John_M_
That would work with a 2 stroke... 4 stroke you would have to close the solenoid valve to increase tank pressure as the blowby would be greatly reduced with rpm... just enough to operate a diaphragm pump with the reciprocating pulses caused by the piston moving up and down through an unchecked crankcase breather... you could add a second one way check valve in the crankcase to draw air in, and the piston would displace the crankcase volume out the breather. that would work throughout the entire rpm range then.
Yes, I failed to mention the inlet check needed for 4 strokes. I have a set of Saito twin check valves well suited for the purpose.
Edit: Looking back at my posts it appears I failed to mention that I was talking specifically about 4 strokes. Sorry about that.