Valve actuation system with valve seating control
AssigneeJacobs Vehicle Systems, Inc.
InventorsZhou Yang, Ryan C Noss, Brian Ruggiero, John A. Schwoerer, Neil Fuchs
Life of this patent
Estimating the term…
Abstract
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.
Claims16
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.
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.
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.
Dependencies are inferred from the claim text.