US 6,883,492 B2
Compact lost motion system for variable valve actuationGeneral
US 6,883,492 B2
Compact lost motion system for variable valve actuation
Tech Center:
3700 Mechanical Engineering, Manufacturing and Medical Devices/Processes
Examiner:
Erick Solis
Art Unit:
3747 Thermal and Combustion Technology, Motive and Fluid Power Systems
Inventors:
Richard E. Vanderpoel; John A. Schwoerer; Jeffrey Mossberg; Shengqiang Huang
Assignee:
Priority:
04/08/02
Filed:
04/08/03
Granted:
04/26/05
Expiration:
04/24/22
Abstract
Lost motion systems and methods for providing engine valves with variable valve actuation for engine valve events are disclosed. The system may include a master piston hydraulically linked to a slave piston, and a dedicated cam operatively connected to the master piston. The slave piston may be disposed substantially perpendicular to the master piston in a common housing. The slave piston is adapted to actuate one or more engine valves. The slave piston may incorporate an optional valve seating assembly into its upper end. A trigger valve may be operatively connected to the master-slave hydraulic circuit to selectively release and add hydraulic fluid to the circuit.
Cooperative Patent Classification (CPC)
F01F01L2001/34446F01LF02D13/0261F02M26/01F02D