Patents by Inventor Gregory T. Roth
Gregory T. Roth 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: 11745738Abstract: A method of controlling a propulsion system inverter includes identifying at least one route characteristic of a portion of a route being traversed by a vehicle. The method further includes Receiving at least one inverter characteristic. The method further includes generating a target thermal profile of the propulsion system inverter corresponding to thermal fatigue associated with the at least one thermal characteristic. The method further includes generating a signal to selectively instruct the adjustment of at least one of the vehicle speed control input, a torque demand corresponding to the vehicle speed control input, and the portion of the route based on the target thermal profile of the propulsion system inverter to improve inverter life.Type: GrantFiled: January 19, 2021Date of Patent: September 5, 2023Assignee: DELPHI TECHNOLOGIES IP LIMITEDInventor: Gregory T. Roth
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Publication number: 20220227368Abstract: A method of controlling a propulsion system inverter includes identifying at least one route characteristic of a portion of a route being traversed by a vehicle. The method further includes Receiving at least one inverter characteristic. The method further includes generating a target thermal profile of the propulsion system inverter corresponding to thermal fatigue associated with the at least one thermal characteristic. The method further includes generating a signal to selectively instruct the adjustment of at least one of the vehicle speed control input, a torque demand corresponding to the vehicle speed control input, and the portion of the route based on the target thermal profile of the propulsion system inverter to improve inverter life.Type: ApplicationFiled: January 19, 2021Publication date: July 21, 2022Inventor: Gregory T. ROTH
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Patent number: 11060497Abstract: A method for starting a compression ignition engine having at least one cylinder with a reciprocating piston located therein, an intake valve configured to control the intake of air to an intake port of the cylinder and an exhaust valve configured to control the expulsion of gas from an exhaust port of the cylinder. The method includes the steps of: cranking the engine, conditioning intake air at the intake port of the cylinder to raise the temperature of air in the cylinder, controlling a valve timing the intake valve and/or the exhaust valve to allow the piston to compress the air within the cylinder, thereby increasing the temperature of the air within the cylinder, and injecting fuel into the cylinder when the air within the cylinder has been heated to a temperature sufficient to support compression ignition of a gasoline and air mixture within the cylinder.Type: GrantFiled: February 22, 2018Date of Patent: July 13, 2021Inventors: Mark C. Sellnau, Gregory T. Roth
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Publication number: 20210055120Abstract: A method for vehicle route selection includes identifying a plurality of routes based on a current location of a vehicle and a destination location. The method also includes determining an energy cost for each of the plurality of routes. The method also includes determining a time cost for each of the plurality of routes. The method also includes determining a total cost for each of the plurality of routes using the energy cost and the time cost for each respective route of the plurality of routes. The method also includes providing, to an occupant of the vehicle, the plurality of routes and the total cost for each respective route of the plurality of routes.Type: ApplicationFiled: August 20, 2019Publication date: February 25, 2021Inventor: Gregory T. Roth
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Patent number: 10329989Abstract: A method of quantifying a particulate matter in an exhaust stream includes the steps of accumulating a particulate matter on a sensor. The sensor provides a signal that varies based upon an amount of the particulate on the sensor. The sensor includes a measurement cycle that includes a deadband zone, followed by an active zone, which is followed by a regeneration zone. The particulate matter is calculated after an end of the deadband zone is reached and prior to an end of the measurement cycle.Type: GrantFiled: September 15, 2016Date of Patent: June 25, 2019Assignee: DELPHI TECHNOLOGIES IP LIMITEDInventors: Gerard W. Malaczynski, Gregory T. Roth
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Patent number: 10329987Abstract: A system includes an exhaust system fluidly configured to define an exhaust stream. A sensor is arranged in the exhaust system and is configured to be exposed to the exhaust stream and accumulate particulate matter on the sensor. The sensor provides a signal that varies based upon an amount of particulate matter on the sensor. A control system is in communication with the sensor. The control system includes a controller configured to calculate a differential of a conductance signal related to the signal, compare consecutive differentials to identify an erroneous differential in an abnormal signal based upon an anomaly relating to the accumulation of the particulate matter, and reconstruct the abnormal signal by correcting the erroneous differential to produce a corrected, decimated conductance signal. The control system is configured to determine a total accumulated particulate matter adjusted for the anomaly.Type: GrantFiled: September 15, 2016Date of Patent: June 25, 2019Assignee: DELPHI TECHNOLOGIES IP LIMITEDInventors: Gerard W. Malaczynski, Gregory T. Roth
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Patent number: 10233850Abstract: A system for controlling the combustion behavior of an engine is provided. The engine is equipped with a plurality of control subsystems that influence combustion in the engine. The system includes a controller configured to receive a plurality of inputs, to determine a desired subsystem states to operate the engine, and to determine a target value for each of a plurality of control parameters, wherein the target values for one or more control parameters depends on the values of the plurality of inputs. The controller is further configured to communicate the target values of control parameters to the control subsystems.Type: GrantFiled: October 14, 2015Date of Patent: March 19, 2019Assignee: DELPHI TECHNOLOGIES IP LIMITEDInventors: Gregory T. Roth, Gary C. Fulks, Andrew Fedewa, Xiaojian Yang, Donald V. Johnson
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Patent number: 10047692Abstract: A GDCI engine control system determines if in-cylinder conditions are sufficient to achieve combustion in a given cylinder or if a misfire is likely. Fuel is delivered to that cylinder if combustion is probable, but fuel is disabled to that cylinder if a misfire is probable.Type: GrantFiled: December 4, 2015Date of Patent: August 14, 2018Assignee: DELPHI TECHNOLOGIES IP LIMITEDInventors: Gregory T. Roth, Gary C. Fulks, Andrew Fedewa
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Publication number: 20180180013Abstract: A method for starting a compression ignition engine having at least one cylinder with a reciprocating piston located therein, an intake valve configured to control the intake of air to an intake port of the cylinder and an exhaust valve configured to control the expulsion of gas from an exhaust port of the cylinder. The method includes the steps of: cranking the engine, conditioning intake air at the intake port of the cylinder to raise the temperature of air in the cylinder, controlling a valve timing the intake valve and/or the exhaust valve to allow the piston to compress the air within the cylinder, thereby increasing the temperature of the air within the cylinder, and injecting fuel into the cylinder when the air within the cylinder has been heated to a temperature sufficient to support compression ignition of a gasoline and air mixture within the cylinder.Type: ApplicationFiled: February 22, 2018Publication date: June 28, 2018Inventors: Mark C. Sellnau, Gregory T. Roth
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Publication number: 20180073415Abstract: A system includes an exhaust system fluidly configured to define an exhaust stream. A sensor is arranged in the exhaust system and is configured to be exposed to the exhaust stream and accumulate particulate matter on the sensor. The sensor provides a signal that varies based upon an amount of particulate matter on the sensor. A control system is in communication with the sensor. The control system includes a controller configured to calculate a differential of a conductance signal related to the signal, compare consecutive differentials to identify an erroneous differential in an abnormal signal based upon an anomaly relating to the accumulation of the particulate matter, and reconstruct the abnormal signal by correcting the erroneous differential to produce a corrected, decimated conductance signal. The control system is configured to determine a total accumulated particulate matter adjusted for the anomaly.Type: ApplicationFiled: September 15, 2016Publication date: March 15, 2018Inventors: Gerard W. Malaczynski, Gregory T. Roth
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Publication number: 20180073416Abstract: A method of quantifying a particulate matter in an exhaust stream includes the steps of accumulating a particulate matter on a sensor. The sensor provides a signal that varies based upon an amount of the particulate on the sensor. The sensor includes a measurement cycle that includes a deadband zone, followed by an active zone, which is followed by a regeneration zone. The particulate matter is calculated after an end of the deadband zone is reached and prior to an end of the measurement cycle.Type: ApplicationFiled: September 15, 2016Publication date: March 15, 2018Inventors: Gerard W. Malaczynski, Gregory T. Roth
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Publication number: 20170159516Abstract: A piston oil squirter is selectively opened when an oil temperature is below a threshold oil temperature to transfer heat from the combustion chamber and heat the oil more rapidly when the engine is cold.Type: ApplicationFiled: December 4, 2015Publication date: June 8, 2017Inventor: GREGORY T. ROTH
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Publication number: 20170159594Abstract: A GDCI engine control system determines if in-cylinder conditions are sufficient to achieve combustion in a given cylinder or if a misfire is likely. Fuel is delivered to that cylinder if combustion is probable, but fuel is disabled to that cylinder if a misfire is probable.Type: ApplicationFiled: December 4, 2015Publication date: June 8, 2017Inventors: GREGORY T. ROTH, GARY C. FULKS, ANDREW FEDEWA
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Publication number: 20170114748Abstract: A method for controlling the combustion behavior of an engine is provided. The engine is equipped with a plurality of actuators that influence combustion in the engine. The method includes receiving a target value for each of a plurality of charge air properties. The method further includes communicating signals operative to control the plurality of actuators so as to urge the actual values of the charge air properties to their target values.Type: ApplicationFiled: October 27, 2015Publication date: April 27, 2017Inventors: GREGORY T. ROTH, GARY C. FULKS, ANDREW FEDEWA, XIAOJIAN YANG, MARK C. SELLNAU, JAMES F. SIMMAMON, KEVIN S. HOYER
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Publication number: 20170107920Abstract: A system for controlling the combustion behavior of an engine is provided. The engine is equipped with a plurality of control subsystems that influence combustion in the engine. The system includes a controller configured to receive a plurality of inputs, to determine a desired subsystem states to operate the engine, and to determine a target value for each of a plurality of control parameters, wherein the target values for one or more control parameters depends on the values of the plurality of inputs. The controller is further configured to communicate the target values of control parameters to the control subsystems.Type: ApplicationFiled: October 14, 2015Publication date: April 20, 2017Inventors: GREGORY T. ROTH, GARY C. FULKS, ANDREW FEDEWA, XIAOJIAN YANG, DONALD V. JOHNSON
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Patent number: 9410509Abstract: A system for a multi-cylinder compression ignition engine includes a plurality of heaters, at least one heater per cylinder, with each heater configured to heat air introduced into a cylinder. Independent control of the heaters is provided on a cylinder-by-cylinder basis. A combustion parameter is determined for combustion in each cylinder of the engine, and control of the heater for that cylinder is based on the value of the combustion parameter for combustion in that cylinder. A method for influencing combustion in a multi-cylinder compression ignition engine, including determining a combustion parameter for combustion taking place in a cylinder of the engine and controlling a heater configured to heat air introduced into that cylinder, is also provided.Type: GrantFiled: December 4, 2013Date of Patent: August 9, 2016Assignee: Delphi Technologies, Inc.Inventors: Gregory T. Roth, Mark C. Sellnau
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Publication number: 20150152817Abstract: A system for a multi-cylinder compression ignition engine includes a plurality of heaters, at least one heater per cylinder, with each heater configured to heat air introduced into a cylinder. Independent control of the heaters is provided on a cylinder-by-cylinder basis. A combustion parameter is determined for combustion in each cylinder of the engine, and control of the heater for that cylinder is based on the value of the combustion parameter for combustion in that cylinder. A method for influencing combustion in a multi-cylinder compression ignition engine, including determining a combustion parameter for combustion taking place in a cylinder of the engine and controlling a heater configured to heat air introduced into that cylinder, is also provided.Type: ApplicationFiled: December 4, 2013Publication date: June 4, 2015Inventors: GREGORY T. ROTH, MARK C. SELLNAU
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Patent number: 8997698Abstract: A system for a multi-cylinder compression ignition engine includes a plurality of nozzles, at least one nozzle per cylinder, with each nozzle configured to spray oil onto the bottom side of a piston of the engine to cool that piston. Independent control of the oil spray from the nozzles is provided on a cylinder-by-cylinder basis. A combustion parameter is determined for combustion in each cylinder of the engine, and control of the oil spray onto the piston in that cylinder is based on the value of the combustion parameter for combustion in that cylinder. A method for influencing combustion in a multi-cylinder engine, including determining a combustion parameter for combustion taking place in in a cylinder of the engine and controlling an oil spray targeted onto the bottom of a piston disposed in that cylinder is also presented.Type: GrantFiled: December 4, 2013Date of Patent: April 7, 2015Assignee: Delphi Technologies, Inc.Inventors: Gregory T. Roth, Harry L Husted, Mark C. Sellnau
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Patent number: 8823401Abstract: A particulate matter sensor includes a first pair of sensing electrodes with a gap therebetween and a second pair of sensing electrodes with a gap therebetween. A method for determining an amount of soot on the particulate matter sensor includes determining the electrical resistance between the first pair of electrodes and the electrical resistance between the second pair of electrodes. The amount of soot deposited on the particulate matter sensor is determined based on the electrical resistance values. The time rate of change of resistance between the first pair of electrodes and the time rate of change of resistance between the second pair of electrodes are determined. The first and second rates of change are compared to each other and to threshold values, and the determination of soot amount may be modified depending on the results of these comparisons.Type: GrantFiled: March 30, 2012Date of Patent: September 2, 2014Assignee: Delphi Technologies, Inc.Inventors: Gregory T. Roth, Lary R. Hocken
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Publication number: 20130257460Abstract: A particulate matter sensor includes a first pair of sensing electrodes with a gap therebetween and a second pair of sensing electrodes with a gap therebetween. A method for determining an amount of soot on the particulate matter sensor includes determining the electrical resistance between the first pair of electrodes and the electrical resistance between the second pair of electrodes. The amount of soot deposited on the particulate matter sensor is determined based on the electrical resistance values. The time rate of change of resistance between the first pair of electrodes and the time rate of change of resistance between the second pair of electrodes are determined. The first and second rates of change are compared to each other and to threshold values, and the determination of soot amount may be modified depending on the results of these comparisons.Type: ApplicationFiled: March 30, 2012Publication date: October 3, 2013Applicant: DELPHI TECHNOLOGIES, INC.Inventors: GREGORY T. ROTH, LARY R. HOCKEN