Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
-
Valve spring pressure and boost
After the inlet closing event, the valve may bounce/lift of the seat helped by the pressure differential across the valve (due to boost and inlet ram too late due to high RPM). At this point in time the piston is rising and the cylinder volume decreasing, either the inlet valve is happily seated...- dplecko
- Post #34
- Forum: Engine & fuel engineering
-
Valve spring pressure and boost
Depending upon your existing valve train (pushrod vs. direct acting, stiff vs. not so stiff, hydraulic vs. solid and not least the amount of reserve spring pressure capacity) you may or may not notice any valve control issues as a result of added boost and just because you don't notice, doesn't...- dplecko
- Post #32
- Forum: Engine & fuel engineering
