1
Yue Yun Wang, John M Mulloy, Mark W Pyclik: System for estimating turbocharger compressor outlet temperature. Cummins, Barnes & Thornburg, June 11, 2002: US06401457 (42 worldwide citation)

A system for estimating turbocharger compressor outlet temperature includes an engine controller responsive to any two of corrected turbocharger speed, corrected fresh mass air flow and turbocharger compressor pressure ratio (compressor outlet pressure/compressor inlet pressure) to compute compresso ...


2
Thomas L McKinley, Philip M Dimpelfeld, John M Mulloy: Exhaust gas recirculation system for a turbocharged internal combustion engine. Cummins Engine Company, Leydig Voit & Mayer, March 12, 2002: US06354084 (22 worldwide citation)

An exhaust gas recirculation (EGR) enhancement system for a turbocharged internal combustion engine includes a throttle valve arranged in the exhaust duct of the engine, downstream of the EGR system. The throttle valve is controlled in response to engine load and engine speed to selectively provide ...


3
Patrick F Flynn, Harold G Weber, John M Mulloy: Turbomachine. Cummins Engine Company, Neuman Williams Anderson & Olson, January 6, 1981: US04243357 (18 worldwide citation)

A turbomachine, operable as a compressor or a turbine, for a compressible fluid is provided which includes a wheel having a plurality of vanes extending from a generally axial flow section to a generally radial flow section. Adjacent vanes define fluid passageways having a generally axially oriented ...


4
John M Mulloy, John F Parker, Sam Pringle: Method of controlling the exhaust gas temperature for after-treatment systems on a diesel engine using a variable geometry turbine. Cummins, Krieg DeVault, J Bruce Schelkopf Esq, April 24, 2007: US07207176 (13 worldwide citation)

A method for controlling a variable geometry turbine of a turbocharger to increase the temperature of the exhaust gas delivered to an after-treatment system. In one form the method includes reducing a fluid flow area to the turbine below a normal size and bypassing a portion of the exhaust gas aroun ...


5
Richard J Gustafson, John M Mulloy, Thomas McKinley: Boost wastegate device for EGR assist. Cummins, Krieg DeVault, J Bruce Schelkopf Esq, August 14, 2007: US07254948 (12 worldwide citation)

An apparatus and method for controlling exhaust gas recirculation flow. The apparatus and method uses a pressure-bleeding device, such as a wastegate valve, to change the pressure in an internal combustion engine in order to alter the flow rate of the exhaust gas through an exhaust gas recirculation ...


6
Thomas L McKinley, Philip M Dimpelfeld, John M Mulloy: Exhaust gas recirculation system for a turbocharged internal combustion engine. Cummins Engine Company, Leydig Voit & Mayer, November 6, 2001: US06311494 (12 worldwide citation)

An exhaust gas recirculation (EGR) enhancement system for a turbocharged internal combustion engine includes a throttle valve arranged in the exhaust duct of the engine, downstream of the EGR system. The throttle valve is controlled in response to engine load and engine speed to selectively provide ...


7
John N Chi, John M Mulloy, Sriram S Popuri, Timothy R Frazier, Martin T Books, Divakar Rajamohan, Indranil Brahma, Xi Wei: System for controlling an air handling system including a dual-stage variable geometry turbocharger. Cummins, Barnes & Thornburg, October 29, 2013: US08567192 (12 worldwide citation)

A system is provided for controlling an air handling system for an internal combustion engine. A dual-stage turbocharger includes a high-pressure compressor and variable geometry turbine combination fluidly coupled to a low-pressure compressor and variable geometry turbine combination. A control cir ...


8
John M Mulloy, Sam Pringle: Method of controlling the exhaust gas temperature for after-treatment systems on a diesel engine using a variable geometry turbine. Cummins, J Bruce Schelkopf Esq, Krieg DeVault, December 19, 2006: US07150151 (11 worldwide citation)

A method for controlling a variable geometry turbine of a turbocharger to increase the temperature of the exhaust gas delivered to an after-treatment system. In one form the method includes reducing a fluid flow area to the turbine below a normal size and bypassing a portion of the exhaust gas aroun ...


9
John M Mulloy, John F Parker, Sam Pringle: Method of controlling the exhaust gas temperature for after-treatment systems on a diesel engine using a variable geometry turbine. Cummins, Krieg DeVault, J Bruce Schelkopf Esq, February 9, 2010: US07658068 (5 worldwide citation)

A method for controlling a variable geometry turbine of a turbocharger to increase the temperature of the exhaust gas delivered to an after-treatment system. In one form the method includes reducing a fluid flow area to the turbine below a normal size and bypassing a portion of the exhaust gas aroun ...


10
Thomas A Dollmeyer, Jennifer W Rumsey, Larry J Brackney, B Jerry Song, J Steve Wills, John N Chi, John M Mulloy: Method for controlling turbine outlet temperatures in a diesel engine. Cummins, Matthew D Fair, Krieg DeVault, December 4, 2012: US08322129 (2 worldwide citation)

A method and system for controlling an exhaust temperature for an internal combustion engine is disclosed. The method and system include determining a range of acceptable charge flows within the internal combustion engine to meet a desired exhaust temperature. The method and system further include c ...