Patents by Inventor Scott J. Chynoweth
Scott J. Chynoweth 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: 10458349Abstract: A method of start/stop engine control based on vehicle location and driving situation includes identifying the location and driving situation of a host vehicle, and classifying the location and the driving situation of the host vehicle based on the identified location and driving situation. The engine start/stop control is based on at least one of the location classification and driving situation classification.Type: GrantFiled: December 13, 2017Date of Patent: October 29, 2019Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Yiran Hu, Chen-fang Chang, Scott J. Chynoweth, Douglas R Verner, Feilong Liu
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Publication number: 20190178183Abstract: A method of start/stop engine control based on vehicle location and driving situation includes identifying the location and driving situation of a host vehicle, and classifying the location and the driving situation of the host vehicle based on the identified location and driving situation. The engine start/stop control is based on at least one of the location classification and driving situation classification.Type: ApplicationFiled: December 13, 2017Publication date: June 13, 2019Inventors: Yiran Hu, Chen-fang Chang, Scott J. Chynoweth, Douglas R. Verner, Feilong Liu
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Patent number: 9347415Abstract: A starter relay connects a battery with a starter motor of an engine when in a closed state and disconnects the starter motor from the battery when in an open state. A switching device provides current to the starter relay when in a closed state and disables current flow to the starter relay when in an open state. For an engine startup event, a switch control module: transitions the switching device to the closed state for a first predetermined period; transitions the switching device to the open state for a second predetermined period after the first predetermined period; and transitions the switching device to the closed state for a third period after the second predetermined period. The starter relay remains in the open state during the first predetermined period and transitions to the closed state when the switching device is in the closed state for the third period.Type: GrantFiled: March 7, 2014Date of Patent: May 24, 2016Assignee: GM Global Technology Operations LLCInventors: Timothy P. Philippart, Shawn L. Boozer, Scott J. Chynoweth, Detlev Schafer
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Publication number: 20150211467Abstract: A starter relay connects a battery with a starter motor of an engine when in a closed state and disconnects the starter motor from the battery when in an open state. A switching device provides current to the starter relay when in a closed state and disables current flow to the starter relay when in an open state. For an engine startup event, a switch control module: transitions the switching device to the closed state for a first predetermined period; transitions the switching device to the open state for a second predetermined period after the first predetermined period; and transitions the switching device to the closed state for a third period after the second predetermined period. The starter relay remains in the open state during the first predetermined period and transitions to the closed state when the switching device is in the closed state for the third period.Type: ApplicationFiled: March 7, 2014Publication date: July 30, 2015Applicant: GM Global Technology Operations LLCInventors: TIMOTHY P. PHILIPPART, Shawn L. Boozer, Scott J. Chynoweth, Detlev Schafer
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Patent number: 8768599Abstract: A control system for a vehicle includes a time determination module, a fuel age determination module, and an engine control module. The time determination module determines an engine off time, wherein the engine off time indicates an amount of time that an engine is off. The fuel age determination module determines an age of fuel in a fuel system of the engine. The engine control module starts the engine when one of the engine off time is greater than a predetermined time threshold and the age of the fuel is greater than a predetermined age threshold.Type: GrantFiled: April 16, 2010Date of Patent: July 1, 2014Inventors: John P. Blanchard, Scott J. Chynoweth, Tameem K. Assaf, Jacob S. Tretter, Constantine J. Sasaridis, Michael A. Turley
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Patent number: 8195370Abstract: A powertrain control system for a vehicle includes a plurality of axle torque request modules that generate respective axle torque requests based on respective performance criteria of a vehicle, an axle torque arbitration module that generates a net axle torque request based on the plurality of axle torque requests, a plurality of propulsion torque request modules that generate respective propulsion torque requests based on respective performance criteria of an engine of the vehicle, a propulsion torque arbitration module that determines a net engine torque request based on the net axle torque request and the plurality of propulsion torque requests, and a propulsion torque control module that controls a plurality of actuators based on the net engine torque request such that the engine produces an output torque in accordance with the net engine torque request.Type: GrantFiled: November 2, 2007Date of Patent: June 5, 2012Inventors: Robert C. Simon, Jr., Leonard G. Wozniak, Michael Livshiz, Christopher E. Whitney, Charles H. Folkerts, Scott J. Chynoweth, David J. Stroh
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Patent number: 8116954Abstract: An engine control module comprises a torque control module, an engine speed (RPM) control module, and an actuator module. The torque control module determines a first desired torque based on a requested torque. The RPM control module selectively determines a second desired torque based on a desired RPM. The torque control module determines the first desired torque further based on the second desired torque when the engine control module is transitioning from an RPM control mode to a torque control mode. The RPM control module determines the second desired torque further based on the first desired torque when the engine control module is transitioning from the torque control mode to the RPM control mode. The actuator module controls an actuator of an engine based on the first and second desired torques.Type: GrantFiled: January 25, 2008Date of Patent: February 14, 2012Inventors: Michael Livshiz, Scott J. Chynoweth, Todd R. Shupe, Christopher E. Whitney, Robert C. Simon, Jr., Vivek Mehta, Ning Jin
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Publication number: 20110066352Abstract: A control system for a vehicle includes a time determination module, a fuel age determination module, and an engine control module. The time determination module determines an engine off time, wherein the engine off time indicates an amount of time that an engine is off. The fuel age determination module determines an age of fuel in a fuel system of the engine. The engine control module starts the engine when one of the engine off time is greater than a predetermined time threshold and the age of the fuel is greater than a predetermined age threshold.Type: ApplicationFiled: April 16, 2010Publication date: March 17, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: John P. Blanchard, Scott J. Chynoweth, Tameem K. Assaf, Jacob S. Tretter, Constantine J. Sasaridis, Michael A. Turley
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Patent number: 7797096Abstract: An engine control system for an engine that drives a generator includes a temperature sensor that generates a temperature signal and a control module that determines a generator torque based on an engine speed and a generator characteristic. The control module determines a torque correction factor based on the temperature signal and determines a corrected generator torque based on the generator torque and the torque correction factor. Various embodiments of the invention utilize engine speed, system voltages field winding duty cycle engine temperature, ambient temperature and/or generator current.Type: GrantFiled: August 31, 2006Date of Patent: September 14, 2010Inventors: Michael G. Reynolds, Chandra S. Namuduri, Toufic M Hijazi, Scott J. Chynoweth, Michael Livshiz
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Patent number: 7788024Abstract: A torque control system comprises a torque correction factor module, a RPM-torque transition module, and a selection module. The torque correction factor module determines a first torque correction factor and a second torque correction factor. The RPM-torque transition module stores the first torque correction factor. The selection module selectively outputs one of the first torque correction factor and the second torque correction factor based on a control mode of the torque control system.Type: GrantFiled: January 16, 2008Date of Patent: August 31, 2010Inventors: Michael Livshiz, Christopher E. Whitney, Jeffrey M. Kaiser, Todd R. Shupe, Scott J. Chynoweth, Lan Wang
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Patent number: 7650219Abstract: An engine control module comprises a base reserve module, a power steering reserve module, a reserve torque module, first and second engine actuator modules, and an engine speed control module. The base reserve module determines a base reserve torque. The power steering reserve module determines a power steering reserve torque. The reserve torque module determines a first reserve torque based on the base reserve torque, the power steering reserve torque, and at least one of an oil temperature of an engine and a barometric pressure. The first and second engine actuator modules control first and second actuators of the engine, respectively. The engine speed control module instructs the first engine actuator module to produce a first torque output from the engine and instructs the second engine actuator module to produce a second torque output from the engine.Type: GrantFiled: January 10, 2008Date of Patent: January 19, 2010Inventors: Michael Livshiz, Scott J. Chynoweth, Todd R. Shupe, Jeffrey M. Kaiser, Christopher E. Whitney, Ning Jin
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Publication number: 20090118966Abstract: A torque control system comprises a torque correction factor module, a RPM-torque transition module, and a selection module. The torque correction factor module determines a first torque correction factor and a second torque correction factor. The RPM-torque transition module stores the first torque correction factor. The selection module selectively outputs one of the first torque correction factor and the second torque correction factor based on a control mode of the torque control system.Type: ApplicationFiled: January 16, 2008Publication date: May 7, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Michael Livshiz, Christopher E. Whitney, Jeffrey M. Kaiser, Todd R. Shupe, Scott J. Chynoweth, Lan Wang
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Publication number: 20090118965Abstract: An engine control module comprises a base reserve module, a power steering reserve module, a reserve torque module, first and second engine actuator modules, and an engine speed control module. The base reserve module determines a base reserve torque. The power steering reserve module determines a power steering reserve torque. The reserve torque module determines a first reserve torque based on the base reserve torque, the power steering reserve torque, and at least one of an oil temperature of an engine and a barometric pressure. The first and second engine actuator modules control first and second actuators of the engine, respectively. The engine speed control module instructs the first engine actuator module to produce a first torque output from the engine and instructs the second engine actuator module to produce a second torque output from the engine.Type: ApplicationFiled: January 10, 2008Publication date: May 7, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Michael Livshiz, Scott J. Chynoweth, Todd R. Shupe, Jeffrey M. Kaiser, Christopher E. Whitney, Ning Jin
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Publication number: 20090024263Abstract: A powertrain control system for a vehicle includes a plurality of axle torque request modules that generate respective axle torque requests based on respective performance criteria of a vehicle, an axle torque arbitration module that generates a net axle torque request based on the plurality of axle torque requests, a plurality of propulsion torque request modules that generate respective propulsion torque requests based on respective performance criteria of an engine of the vehicle, a propulsion torque arbitration module that determines a net engine torque request based on the net axle torque request and the plurality of propulsion torque requests, and a propulsion torque control module that controls a plurality of actuators based on the net engine torque request such that the engine produces an output torque in accordance with the net engine torque request.Type: ApplicationFiled: November 2, 2007Publication date: January 22, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Robert C. Simon, JR., Leonard G. Wozniak, Michael Livshiz, Christopher E. Whitney, Charles H. Folkerts, Scott J. Chynoweth, David J. Stroh
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Publication number: 20090018733Abstract: An engine control module comprises a torque control module, an engine speed (RPM) control module, and an actuator module. The torque control module determines a first desired torque based on a requested torque. The RPM control module selectively determines a second desired torque based on a desired RPM. The torque control module determines the first desired torque further based on the second desired torque when the engine control module is transitioning from an RPM control mode to a torque control mode. The RPM control module determines the second desired torque further based on the first desired torque when the engine control module is transitioning from the torque control mode to the RPM control mode. The actuator module controls an actuator of an engine based on the first and second desired torques.Type: ApplicationFiled: January 25, 2008Publication date: January 15, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Michael Livshiz, Scott J. Chynoweth, Todd R. Shupe, Christopher E. Whitney, Robert C. Simon, JR., Vivek Mehta, Ning Jin
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Patent number: 7463970Abstract: A method of achieving a desired engine speed of an internal combustion engine includes determining the desired engine speed, calculating a slow response torque value based on the desired engine speed and calculating a fast response torque value based on the desired engine speed. A slow response actuator command and a fast response actuator command are generated based on the slow response torque value and the fast response torque value, respectively. Operation of the engine is regulated based on the slow response actuator command and the fast response actuator command to achieve the desired engine speed.Type: GrantFiled: March 13, 2007Date of Patent: December 9, 2008Assignee: GM Global Technology Operations, Inc.Inventors: Michael Livshiz, Scott J. Chynoweth, Todd R. Shupe, Christopher E. Whitney
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Publication number: 20080125951Abstract: A method of achieving a desired engine speed of an internal combustion engine includes determining the desired engine speed, calculating a slow response torque value based on the desired engine speed and calculating a fast response torque value based on the desired engine speed. A slow response actuator command and a fast response actuator command are generated based on the slow response torque value and the fast response torque value, respectively. Operation of the engine is regulated based on the slow response actuator command and the fast response actuator command to achieve the desired engine speed.Type: ApplicationFiled: March 13, 2007Publication date: May 29, 2008Inventors: Michael Livshiz, Scott J. Chynoweth, Todd R. Shupe, Christopher E. Whitney
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Publication number: 20080054646Abstract: An engine control system for an engine that drives a generator includes a temperature sensor that generates a temperature signal and a control module that determines a generator torque based on an engine speed and a generator characteristic. The control module determines a torque correction factor based on the temperature signal and determines a corrected generator torque based on the generator torque and the torque correction factor. Various embodiments of the invention utilize engine speed, system voltages field winding duty cycle engine temperature, ambient temperature and/or generator current.Type: ApplicationFiled: August 31, 2006Publication date: March 6, 2008Inventors: Michael G. Reynolds, Chandra S. Namuduri, Toufic M. Hijazi, Scott J. Chynoweth, Michael Livshiz
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Patent number: 7069905Abstract: A torque control system for an engine includes a first module that estimates a first engine torque based on an air-per-cylinder (APC) value and a second module that estimates a second engine torque based on a manifold absolute pressure (MAP). A third module determines a desired MAP based on the first engine torque and the second engine torque. A throttle opening is regulated based on the desired MAP.Type: GrantFiled: August 19, 2005Date of Patent: July 4, 2006Assignee: GM Global Technology Operations, Inc.Inventors: Michael Livshiz, Scott J. Chynoweth
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Patent number: 7021282Abstract: A torque control system for regulating operation of an engine includes a throttle that regulates air flow into the engine and a device that regulates a torque output of the engine. A first module determines a throttle area based on a desired manifold absolute pressure (MAP) and a desired manifold air flow (MAF) and a second module determines a device set-point based on a desired air per cylinder (APC) and an engine speed. A third module generates a throttle control signal to control the throttle based on the throttle area and generates a device control signal to control the device based on the device set-point.Type: GrantFiled: December 1, 2004Date of Patent: April 4, 2006Assignee: General Motors CorporationInventors: Michael Livshiz, Scott J. Chynoweth, Jeffrey M. Kaiser, Richard H. Clutz, Donovan L. Dibble, Bahram Younessi