Hydraulic valve-operating mechanism

Hydraulic valve-operating system for internal combustion engines

Hydraulic-mechanical valve operating mechanism

Hydraulically actuated exhaust valve for a reciprocating combust

Hydraulically actuated valve system

Hydraulically actuated valve train for an internal combustion en

Hydraulically controllable globe valve

Hydraulically controllable globe valve

Hydraulically controlled actuator for activating a valve

Hydraulically controlled actuator for actuating gas exchange...

Hydraulically controlled intake/exhaust valve

Hydraulically controlled valve for an internal combustion...

Hydraulically operating actuating device for a lift valve

Hydraulically powered actuator with pneumatic spring and hydraul

Hydraulically propelled phneumatically returned valve actuator

Hydraulically-assisted engine valve actuator

Hydraulically-assisted engine valve actuator

Hydraulically-assisted engine valve actuator

Hydraulically-driven valve and hydraulic system using same

Hydro-mechanical valve actuation system for split-cycle engine