Hydraulic valve-operating system for internal combustion engines

Patent · Tue Feb 16 04:00:00 EST 1988

OSTI ID:5107373

O'Neill, C G

A hydraulic valve-operating system for use in an internal combustion engine is described comprising: (a) means movable between initial and displaced positions for moving a valve of an internal combustion engine between closed and opened conditions; (b) primary hydraulic fluid means connected in flow communication with the valve-moving means; (c) control means actuatable between first and second displaced positions for switching the primary hydraulic fluid means between pressure supply and return flow modes with the valve-moving means wherein the first pressure is respectively applied to and removed from the valve-moving means; (d) the primary hydraulic fluid means, when switched to its pressure supply flow mode by the control means, being driven by the engine for applying a first pressure to the valve-moving means which varies proportionally with the (speed of the engine) to accelerate the valve-moving means from its initial position toward its displaced position; (e) actuator means for actuating the control means between its first and second displaced positions; and (f) gas spring means connected in flow communication with the primary hydraulic fluid means for applying a second pressure to the valve-moving means which opposes the first pressure.

• Assignee: Olin Corp., Stamford, CT
• Patent Number(s): US 4724801
• OSTI ID: 5107373
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ACTUATORS
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID MECHANICS
FLUIDS
HEAT ENGINES
HYDRAULIC FLUIDS
HYDRAULICS
INTERNAL COMBUSTION ENGINES
MECHANICS
OPERATION
VALVES
WORKING FLUIDS