Valve actuation system with valve seating control
View Patent ↗A variable valve actuation system to actuate and control the seating velocity of an internal combustion engine valve is disclosed. The system comprises: a housing having a bore formed therein; an outer piston slidably disposed in the bore, the outer piston having an orifice formed therein; a catch piston slidably disposed in the outer piston; and an cone-shaped extension extending from the inner piston, wherein the cone-shaped extension is adapted to provide a variable flow area through the outer piston orifice to provide improved engine valve seating.
1. A valve seating device, comprising:
a housing having a bore formed therein;
an outer piston slidably disposed in the bore, the outer piston having an orifice formed therein; and
a catch piston slidably disposed in the outer piston, said catch piston having a cone-shaped extension extending from the catch piston into the outer piston orifice.
2. The valve seating device of claim 1 further comprising:
a cap contacting an upper portion of the outer piston, said cap having an opening provided therein; and
a catch spring disposed between the catch piston and the cap.
3. The valve seating device of claim 2 further comprising:
one or more springs disposed between the cap and an end wall of the housing bore.
4. The valve seating device of claim 1 further comprising:
one or more springs disposed between the catch piston and an end wall of the housing bore.
5. The valve seating device of claim 1 wherein the cone-shaped extension is tapered linearly from a base portion to a terminus.
6. The valve seating device of claim 1 wherein the cone-shaped extension is tapered progressively from a base portion to a terminus.
7. The valve seating device of claim 1 wherein the cone-shaped extension is tapered to a lesser and lesser degree from a base portion to a terminus.
8. The valve seating device of claim 1 further comprising one or more check valves disposed between the outer piston and a lower portion of the housing bore.
9. The valve seating device of claim 8 further comprising:
a cap contacting an upper portion of the outer piston; and
a catch spring disposed between the catch piston and the cap.
10. The valve seating device of claim 9 further comprising:
one or more springs disposed between the cap and an end wall of the housing bore.
11. The valve seating device of claim 8 further comprising:
one or more springs disposed between the catch piston and an end wall of the housing bore.
12. The valve seating device of claim 8 wherein the cone-shaped extension is tapered linearly from a base portion to a terminus.
13. The valve seating device of claim 8 wherein the cone-shaped extension is tapered progressively from a base portion to a terminus.
14. The valve seating device of claim 1 wherein the cone-shaped extension is tapered to a lesser and lesser degree from a base portion to a terminus.
15. A valve seating device, comprising:
a housing having a bore formed therein;
a cylindrically shaped outer piston slidably disposed in the bore, the outer piston having an orifice formed in a lower portion thereof and having a hollow interior portion;
a cylindrically shaped catch piston slidably disposed in the outer piston, said catch piston having a cone-shaped extension extending from the catch piston into the outer piston orifice, and having a hollow interior portion;
a cap disposed at an upper portion of the outer piston, said cap having an opening therein;
a catch spring disposed between the catch piston and the cap; and
at least one spring disposed between the cap and an end wall of the housing bore.
16. A valve seating device, comprising:
a housing having a bore formed therein;
a cylindrically shaped outer piston slidably disposed in the bore, the outer piston having an orifice formed in a lower portion thereof and having a hollow interior portion;
a cylindrically shaped catch piston slidably disposed in the outer piston, said catch piston having a cone-shaped extension extending from the catch piston into the outer piston orifice, and having a hollow interior portion;
a cap disposed at an upper portion of the outer piston, said cap having an opening therein;
a catch spring disposed between the catch piston and the cap;
at least one spring disposed between the cap and an end wall of the housing bore; and
one or more check valves disposed between the outer piston and a lower portion of the housing bore.