Patents by Inventor Gheorghe Cosma
Gheorghe Cosma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20160222841Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: ApplicationFiled: January 8, 2016Publication date: August 4, 2016Inventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Publication number: 20160076464Abstract: Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Publication number: 20160076463Abstract: Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Publication number: 20160076413Abstract: Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Publication number: 20160076414Abstract: Lost motion engine valve actuation systems and methods of actuating engine valves are disclosed. Exemplary systems may include a valve train element, a first lost motion piston, an accumulator, and a hydraulic circuit, among other components. Variation of the first lost motion piston position may be carried out by placing the first lost motion piston in hydraulic communication with a trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the first lost motion piston position.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Publication number: 20140311449Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: ApplicationFiled: July 3, 2014Publication date: October 23, 2014Inventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Patent number: 8820276Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: GrantFiled: February 4, 2011Date of Patent: September 2, 2014Assignee: Jacobs Vehicle Systems, Inc.Inventors: Joseph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Patent number: 8776738Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: GrantFiled: December 23, 2013Date of Patent: July 15, 2014Assignee: Jacobs Vehicle Systems, IncInventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Publication number: 20140165937Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: ApplicationFiled: December 23, 2013Publication date: June 19, 2014Applicant: JACOBS VEHICLE SYSTEMS, INC.Inventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Publication number: 20110197833Abstract: A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.Type: ApplicationFiled: February 4, 2011Publication date: August 18, 2011Applicant: Jacobs Vehicle Systems, Inc.Inventors: Joesph M. Vorih, Jeffrey Mossberg, Richard Vanderpoel, Steven Ernest, Guy Paterson, John A. Schwoerer, Edward T. Leitkowski, Andrew Brzoska, Gheorghe Cosma
-
Patent number: 6000374Abstract: An apparatus and method for effectuating multi-cycle engine braking is disclosed. The present invention controls the operation of the engine valves to permit more than one compression release event during a single engine operating cycle. The apparatus includes an assembly for operating at least one exhaust valve of an engine cylinder during a positive power operation. The apparatus further includes an assembly for operating at least one intake valve of the engine cylinder. The apparatus further including an assembly for operating the at least one exhaust valve during an engine braking operation.Type: GrantFiled: December 23, 1997Date of Patent: December 14, 1999Assignee: Diesel Engine Retarders, Inc.Inventors: Gheorghe Cosma, James Usko
-
Patent number: 5619965Abstract: A camless internal combustion engine has electronically or computer controlled, electrically operated hydraulic actuators for selectively opening the engine cylinder valves. The engine is capable of operating in either positive power mode or compression release engine braking mode. The pressure of the hydraulic fluid available for application to the hydraulic actuators is automatically adjusted from a relatively low pressure during positive power mode to a relatively high pressure during compression release engine braking mode. The stroke lengths of the engine cylinder valves may be automatically adjusted for various engine operating conditions using feedback loops that include sensors for detecting the amount of opening of each engine cylinder valve whose stroke length is to be controlled in this manner. The shapes of the valve opening and closing trajectories as a function of engine crank angle may similarly be varied in many other respect.Type: GrantFiled: March 24, 1995Date of Patent: April 15, 1997Assignee: Diesel Engine Retarders, Inc.Inventors: Gheorghe Cosma, James Usko
-
Patent number: 5537975Abstract: In engine brakes of the type in which a master piston is reciprocated by an associated internal combustion engine part to hydraulically pressurize hydraulic fluid in a plenum, after which a trigger valve is opened to apply that hydraulic pressure to a slave piston which opens an exhaust valve in the engine to produce a compression release event, an electronically controlled trigger valve is used in place of the conventional mechanically operated trigger valve. The electronically controlled trigger valve can be much simpler and cheaper than the mechanical trigger valve it replaces, and it can also be readily controlled to automatically vary the timing of the compression release events if desired.Type: GrantFiled: October 7, 1994Date of Patent: July 23, 1996Assignee: Diesel Engine Retarders, Inc.Inventors: Gheorghe Cosma, Dennis R. Custer, John A. Konopka, James Usko
-
Patent number: RE39258Abstract: An apparatus and method for effectuating multi-cycle engine braking is disclosed. The present invention controls the operation of the engine valves to permit more than one compression release event during a single engine operating cycle. The apparatus includes an assembly for operating at least one exhaust valve of an engine cylinder during a positive power operation. The apparatus further includes an assembly for operating at least one intake valve of the engine cylinder. The apparatus further including an assembly for operating the at least one exhaust valve during an engine braking operation.Type: GrantFiled: December 13, 2001Date of Patent: September 5, 2006Assignee: Jacobs Vehicle Systems, Inc.Inventors: Gheorghe Cosma, James Usko