Patents by Inventor Gary J. Arvan
Gary J. Arvan 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).
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Patent number: 9759228Abstract: A turbocharger having a turbine housing with an integral EGR conduit is disclosed. The turbine includes a turbine wheel attached to a turbine shaft and rotatably disposed in a turbine housing having a turbine volute conduit having a turbine inlet passage fluidly coupled to a turbine volute conduit having a turbine volute passage and a turbine volute inlet and an EGR conduit having an EGR passage, the EGR passage having an EGR conduit inlet, the EGR conduit inlet disposed on the turbine inlet conduit. The turbine inlet conduit is configured for fluid communication of a first portion of an exhaust gas flow received from an engine to the turbine wheel. The EGR conduit is configured for fluid communication of a second portion of the exhaust gas flow to an engine intake manifold.Type: GrantFiled: October 16, 2009Date of Patent: September 12, 2017Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Edward R. Romblom, Ronald M. Tkac, Gary J. Arvan
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Patent number: 8893493Abstract: An exhaust system for a turbocharged internal combustion engine comprises a first exhaust conduit extending between a first engine cylinder and a turbocharger inlet and is configured to conduct exhaust gas therebetween. A second exhaust conduit extends between a second engine cylinder and an in inlet for an exhaust gas recirculation system and is configured to conduct exhaust therebetween. An exhaust gas bypass extends between, and is in fluid communication with, the first and second exhaust conduits and is configured to divert exhaust gas flowing through the second exhaust gas conduit to the first exhaust gas conduit, and the turbocharger inlet, under conditions of varying exhaust gas recirculation demand of the internal combustion engine.Type: GrantFiled: January 14, 2010Date of Patent: November 25, 2014Assignee: GM Global Technology Operations LLCInventor: Gary J. Arvan
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Patent number: 8495979Abstract: An internal combustion engine comprising valve sets through which combustion air enters a cylinder is mixed with fuel for combustion therein and through which products of combustion exit. A valve train assembly comprises a drive rocker arm, including a first, proximal end in contact with a rotatable camshaft and a second, distal end in contact with a valve shaft of a first valve of a valve set and a driven rocker arm including a first, proximal end in contact with the drive rocker arm at a location that is adjacent to the first, proximal end thereof and a second, distal end in contact with a valve shaft of a second valve of a valve set. The drive rocker arm and the driven rocker arm operate to move the valves reciprocally from a closed to an open position.Type: GrantFiled: November 3, 2011Date of Patent: July 30, 2013Assignee: GM Global Technology Operations LLCInventor: Gary J. Arvan
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Publication number: 20120266836Abstract: An internal combustion engine comprising valve sets through which combustion air enters a cylinder is mixed with fuel for combustion therein and through which products of combustion exit. A valve train assembly comprises a drive rocker arm, including a first, proximal end in contact with a rotatable camshaft and a second, distal end in contact with a valve shaft of a first valve of a valve set and a driven rocker arm including a first, proximal end in contact with the drive rocker arm at a location that is adjacent to the first, proximal end thereof and a second, distal end in contact with a valve shaft of a second valve of a valve set. The drive rocker arm and the driven rocker arm operate to move the valves reciprocally from a closed to an open position.Type: ApplicationFiled: November 3, 2011Publication date: October 25, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: Gary J. Arvan
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Patent number: 8220264Abstract: An internal combustion engine has a first and a second cylinder bank. The first and second cylinder banks are arranged such that they have less than a 180 degree included angle with respect to one another, thereby forming an inboard region or generally V-shaped cavity. A respective first and second cylinder head is mounted with respect to the first and second cylinder bank. Integrated within the first and second cylinder head is a first and second integrated exhaust manifold, respectively. The first and second integrated exhaust manifolds are provided on the engine in an “inboard” orientation, i.e. disposed on a side of their respective cylinder heads such that they are substantially adjacent to the generally V-shaped cavity. The first and second integrated exhaust manifold may operate to convey exhaust gases from the engine to at least one turbocharger, which is mounted substantially within the generally V-shaped cavity.Type: GrantFiled: April 12, 2006Date of Patent: July 17, 2012Assignee: GM Global Technology Operations LLCInventors: Gary J. Arvan, Charles E. Freese, V
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Patent number: 8118013Abstract: The present invention provides a crankcase ventilation system and resonator for a turbocharged internal combustion engine assembly. The resonator, designed for intake noise reduction, is mounted to the engine. An oil separation unit, designed for passage of blowby gases, is mounted to a cam cover, sandwiched between the resonator and cam cover. The resonator has a resonator body defining a resonator volume therein. The resonator fluidly communicates the oil separation unit with the turbocharger air inlet pipe, whereby blowby gases are evacuated from the cam cover and delivered through the resonator volume for reintroduction to the engine's air intake system. Integration of the blowby passages into the resonator reduces the number of potential leak paths in the air induction system, and reduces overall engine mass, cost, and packaging size. The present design also offers improved On-board Diagnostics (OBD) by allowing only large flow areas to be disconnected.Type: GrantFiled: September 24, 2008Date of Patent: February 21, 2012Assignee: GM Global Technology Operations LLCInventor: Gary J. Arvan
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Publication number: 20110167804Abstract: An exhaust system for a turbocharged internal combustion engine comprises a first exhaust conduit extending between a first engine cylinder and a turbocharger inlet and is configured to conduct exhaust gas therebetween. A second exhaust conduit extends between a second engine cylinder and an in inlet for an exhaust gas recirculation system and is configured to conduct exhaust therebetween. An exhaust gas bypass extends between, and is in fluid communication with, the first and second exhaust conduits and is configured to divert exhaust gas flowing through the second exhaust gas conduit to the first exhaust gas conduit, and the turbocharger inlet, under conditions of varying exhaust gas recirculation demand of the internal combustion engine.Type: ApplicationFiled: January 14, 2010Publication date: July 14, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Gary J. Arvan
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Publication number: 20110088393Abstract: A turbocharger having a turbine housing with an integral EGR conduit is disclosed. The turbine includes a turbine wheel attached to a turbine shaft and rotatably disposed in a turbine housing having a turbine volute conduit having a turbine inlet passage fluidly coupled to a turbine volute conduit having a turbine volute passage and a turbine volute inlet and an EGR conduit having an EGR passage, the EGR passage having an EGR conduit inlet, the EGR conduit inlet disposed on the turbine inlet conduit. The turbine inlet conduit is configured for fluid communication of a first portion of an exhaust gas flow received from an engine to the turbine wheel. The EGR conduit is configured for fluid communication of a second portion of the exhaust gas flow to an engine intake manifold.Type: ApplicationFiled: October 16, 2009Publication date: April 21, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Edward R. Romblom, Ronald M. Tkac, Gary J. Arvan
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Patent number: 7823545Abstract: A piston squirter system for an internal combustion engine includes an oil reservoir, a variable displacement pump, and, for each cylinder, a piston squirter that sprays oil onto a piston for cooling and lubricating. A gallery connects the variable displacement pump to the piston squirters. The variable displacement pump receives oil from the oil reservoir and distributes the oil through the gallery to the piston squirters at a flow rate according to pressure required. The gallery does not require a relief valve and the piston squirters do not require check valves.Type: GrantFiled: April 25, 2008Date of Patent: November 2, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Gary J. Arvan, Edward R. Romblom
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Publication number: 20100071656Abstract: A method may include operating an engine in a first valvetrain mode during a first engine operating condition, operating the engine in a second valvetrain mode different from the first valvetrain mode during a second engine operating condition, and controlling a temperature of an exhaust aftertreatment component in communication with an exhaust gas from the engine during the second engine operating condition based on the second valvetrain mode.Type: ApplicationFiled: September 25, 2008Publication date: March 25, 2010Applicant: GM GLOBAL TCHNOLOGY OPERATIONS, INC.Inventors: Charles E. Freese, V, Gary J. Arvan
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Publication number: 20100071676Abstract: The present invention provides a crankcase ventilation system and resonator for a turbocharged internal combustion engine assembly. The resonator, designed for intake noise reduction, is mounted to the engine. An oil separation unit, designed for passage of blowby gases, is mounted to a cam cover, sandwiched between the resonator and cam cover. The resonator has a resonator body defining a resonator volume therein. The resonator fluidly communicates the oil separation unit with the turbocharger air inlet pipe, whereby blowby gases are evacuated from the cam cover and delivered through the resonator volume for reintroduction to the engine's air intake system. Integration of the blowby passages into the resonator reduces the number of potential leak paths in the air induction system, and reduces overall engine mass, cost, and packaging size. The present design also offers improved On-board Diagnostics (OBD) by allowing only large flow areas to be disconnected.Type: ApplicationFiled: September 24, 2008Publication date: March 25, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Gary J. Arvan
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Publication number: 20090044768Abstract: A piston squirter system and method for an internal combustion engine is disclosed. The piston squirter system includes an oil reservoir, a variable displacement pump, and, for each cylinder, a piston squirter that sprays oil onto a piston for cooling and lubricating. A gallery connects the variable displacement pump to the piston squirters. The variable displacement pump receives oil from the oil reservoir and distributes the oil through the gallery to the piston squirters at a flow rate according to pressure required. The gallery does not require a relief valve and the piston squirters do not require check valves.Type: ApplicationFiled: April 25, 2008Publication date: February 19, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Gary J. Arvan, Edward R. Romblom