Internal-combustion engines – Poppet valve operating mechanism – Hydraulic system
Reexamination Certificate
2006-08-08
2006-08-08
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Hydraulic system
C123S090130, C123S090150, C123S090110, C123S188800, C251S030010, C251S120000, C251S129030, C251S175000
Reexamination Certificate
active
07086358
ABSTRACT:
A method of controlling the speed of the valves in an electro-hydraulic actuation unit for the valves of an internal combustion engine in which the pressure of the fluid in the hydraulic actuator of the valve is controlled during the final phase of closure of a valve.
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European Search Report for EP 04 10 2852 (Oct. 18, 2004).
Denion Thomas
Howrey LLP
Magneti Marelli Powertrain S.p.A.
Riddle Kyle M.
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