Valve deactivation with an electro-hydraulic actuator

Details Valve deactivation with an electro-hydraulic actuator Valve deactivation with an electro-hydraulic actuator

F - Mech Eng,Light,Heat,Weapons

02

D

F02D 17/02 (2006.01) F01L 1/18 (2006.01) F01L 13/00 (2006.01)

Patent

CA 2436282

An electro-hydraulic actuator assembly having a plurality of hydraulic pressure operated pistons controlled by a single solenoid operated shut-off and vent valve. Eaton hydraulic piston has an exteriorly extending arm attached thereto for contacting a release latch on the engine valve gear for disablement or deactivation of the valves in selected engine combustion chambers. The actuator assembly is disposed with the shut-off and vent valve vent port vertically above the hydraulic piston bores; and, a bleed orifice is provided for bleed flow from the hydraulic piston bores to the valuing chamber in the shut-off and vent valve for permitting bleed flow and air purge. Gravity flow from the vent port may also provide lubrication for the engine cam surface.

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