Patents by Inventor Edward Stuteville
Edward Stuteville 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: 10001073Abstract: A catalyst control system includes a stop and start module that, during a period that the vehicle is ON between (i) a first time when the vehicle is turned ON and (i) a second time when the vehicle is next turned OFF, selectively shuts down and starts a spark ignition engine of the vehicle. A catalyst light off (CLO) control module initiates a first CLO event for a first engine startup during the period and, when a temperature of a catalyst that receives exhaust output by the engine is less than a predetermined temperature, selectively initiates a second CLO event for a second engine startup during the period. A fuel control module richens fueling of the engine during the first and second CLO events of the period. A spark control module retards spark timing of the engine during the first and second CLO events of the period.Type: GrantFiled: May 25, 2016Date of Patent: June 19, 2018Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: J. Michael Gwidt, Robert E. Heger, Robert J. Genslak, Stephen P. Levijoki, Edward Stuteville
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Publication number: 20170342924Abstract: A catalyst control system includes a stop and start module that, during a period that the vehicle is ON between (i) a first time when the vehicle is turned ON and (i) a second time when the vehicle is next turned OFF, selectively shuts down and starts a spark ignition engine of the vehicle. A catalyst light off (CLO) control module initiates a first CLO event for a first engine startup during the period and, when a temperature of a catalyst that receives exhaust output by the engine is less than a predetermined temperature, selectively initiates a second CLO event for a second engine startup during the period. A fuel control module richens fueling of the engine during the first and second CLO events of the period. A spark control module retards spark timing of the engine during the first and second CLO events of the period.Type: ApplicationFiled: May 25, 2016Publication date: November 30, 2017Inventors: J. Michael GWIDT, Robert E. HEGER, Robert J. GENSLAK, Stephen P. LEVIJOKI, Edward STUTEVILLE
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Patent number: 9599006Abstract: A system for a vehicle includes an oxygen storage capacity (OSC) determination module, a delay determination module, a correction module, and a fault detection module. The OSC determination module determines an OSC period of a catalyst of an exhaust system based on first and second amounts of oxygen measured using first and second oxygen sensors located upstream and downstream of the catalyst, respectively. The delay determination module determines a delay period of the second oxygen sensor. The correction module sets a corrected OSC period for the catalyst based on a difference between the OSC period and the delay period. The fault detection module selectively indicates that a fault is present in the catalyst based on the corrected OSC period.Type: GrantFiled: August 30, 2011Date of Patent: March 21, 2017Assignee: GM Global Technology Operations LLCInventors: Robert J. Genslak, Robert E. Heger, Edward Stuteville, Jerry J. Sheahan, Thomas J. Large
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Patent number: 8516796Abstract: A diagnostic system for an exhaust system of an engine includes a fuel control module and a diagnostic module. The fuel control module, in response to a request for a fuel inhibiting event, operates the engine in a first rich condition for a first period until a catalytic converter of the exhaust system is in a predetermined first rich state and subsequently operates the engine in a lean condition for a second period contiguous with the first period. The diagnostic module determines a catalyst efficiency of the catalytic converter based on an output of an oxygen sensor located downstream of said catalytic converter during the second period, and selectively adjusts a diagnostic status of the catalytic converter based on a comparison of the catalyst efficiency and a predetermined catalyst efficiency. The fuel inhibiting event may be a deceleration fuel-cutoff event. A related diagnostic method is also provided.Type: GrantFiled: November 20, 2009Date of Patent: August 27, 2013Inventors: Wesley W. Wald, Robert J. Genslak, Edward Stuteville, Igor Anilovich
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Publication number: 20130054083Abstract: A system for a vehicle includes an oxygen storage capacity (OSC) determination module, a delay determination module, a correction module, and a fault detection module. The OSC determination module determines an OSC period of a catalyst of an exhaust system based on first and second amounts of oxygen measured using first and second oxygen sensors located upstream and downstream of the catalyst, respectively. The delay determination module determines a delay period of the second oxygen sensor. The correction module sets a corrected OSC period for the catalyst based on a difference between the OSC period and the delay period. The fault detection module selectively indicates that a fault is present in the catalyst based on the corrected OSC period.Type: ApplicationFiled: August 30, 2011Publication date: February 28, 2013Applicant: GM Global Technology Operations LLCInventors: Robert J. Genslak, Robert E. Heger, Edward Stuteville, Jerry J. Sheahan, Thomas J. Large
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Patent number: 8364376Abstract: A control system for an engine having a catalytic converter includes an energy calculation module that calculates a calculated mass air flow (MAF) of intake air of the engine based on a requested torque and a requested spark timing that correspond to a desired thermal energy of exhaust of the engine, and that determines an expected thermal energy of the exhaust based on the calculated MAF, and an energy residual module that determines a thermal energy residual of the exhaust based on the expected thermal energy and an estimated thermal energy of the exhaust, wherein the estimated thermal energy is based on a measured MAF of the intake air. The control system includes an energy evaluation module that determines a diagnostic result that indicates whether the catalytic converter is operating within a target temperature range based on the thermal energy residual. Related control methods are also provided.Type: GrantFiled: February 27, 2009Date of Patent: January 29, 2013Inventors: Lan Wang, Robert J. Genslak, Wenbo Wang, Matthew Squire, Jinchun Peng, Edward Stuteville, Kurt D. McLain
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Patent number: 8311721Abstract: A reserve torque system comprises a first module and a reserve torque module. The first module generates a first signal a predetermined period before an equivalence ratio (EQR) of an air/fuel mixture supplied to an engine is transitioned from a non-lean EQR to a lean EQR. The reserve torque module creates a reserve torque between when the first signal is generated and when the EQR is transitioned to the lean EQR.Type: GrantFiled: December 15, 2008Date of Patent: November 13, 2012Inventors: Christopher E. Whitney, Robert J. Genslak, Edward Stuteville, Cheryl A. Williams, Robert C. Simon, Jr.
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Patent number: 8127744Abstract: An engine control module includes a spark control module, an engine speed module, a residual determination module, and a metric determination module. The spark control module actuates spark plugs based on a commanded spark timing. The engine speed module determines a desired engine speed based on an engine temperature and a period of time an engine is in operation after a cold start. The residual determination module determines a desired spark timing based on the desired engine speed, and determines a residual spark timing based on a difference between the commanded spark timing and the desired spark timing. The metric determination module detects a spark timing fault based on the residual spark timing and a predetermined spark timing range.Type: GrantFiled: January 14, 2009Date of Patent: March 6, 2012Inventors: Robert J. Genslak, Edward Stuteville, Wenbo Wang, Wesley W. Wald
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Publication number: 20110120095Abstract: A diagnostic system for an exhaust system of an engine includes a fuel control module and a diagnostic module. The fuel control module, in response to a request for a fuel inhibiting event, operates the engine in a first rich condition for a first period until a catalytic converter of the exhaust system is in a predetermined first rich state and subsequently operates the engine in a lean condition for a second period contiguous with the first period. The diagnostic module determines a catalyst efficiency of the catalytic converter based on an output of an oxygen sensor located downstream of said catalytic converter during the second period, and selectively adjusts a diagnostic status of the catalytic converter based on a comparison of the catalyst efficiency and a predetermined catalyst efficiency. The fuel inhibiting event may be a deceleration fuel-cutoff event. A related diagnostic method is also provided.Type: ApplicationFiled: November 20, 2009Publication date: May 26, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Wesley W. Wald, Robert J. Genslak, Edward Stuteville, Igor Anilovich
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Patent number: 7900439Abstract: A diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor is provided. The system generally includes a fuel control module that commands fuel to transition from a rich condition to a lean condition and that commands fuel to transition from the lean condition to the rich condition. A first diagnostic module monitors the post-catalyst oxygen sensor during the transition from the rich condition to the lean condition. A second diagnostic module monitors the catalyst during the transition from the lean condition to the rich condition.Type: GrantFiled: June 8, 2007Date of Patent: March 8, 2011Inventors: Robert J. Genslak, Igor Anilovich, Justin F. Adams, Jeffry A. Helmick, Edward Stuteville, Wesley W. Wald, Vidyapriya Srinivasan
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Publication number: 20100175664Abstract: An engine control module includes a spark control module, an engine speed module, a residual determination module, and a metric determination module. The spark control module actuates spark plugs based on a commanded spark timing. The engine speed module determines a desired engine speed based on an engine temperature and a period of time an engine is in operation after a cold start. The residual determination module determines a desired spark timing based on the desired engine speed, and determines a residual spark timing based on a difference between the commanded spark timing and the desired spark timing. The metric determination module detects a spark timing fault based on the residual spark timing and a predetermined spark timing range.Type: ApplicationFiled: January 14, 2009Publication date: July 15, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Robert J. Genslak, Edward Stuteville, Wenbo Wang, Wesley W. Wald
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Publication number: 20090241899Abstract: A reserve torque system comprises a first module and a reserve torque module. The first module generates a first signal a predetermined period before an equivalence ratio (EQR) of an air/fuel mixture supplied to an engine is transitioned from a non-lean EQR to a lean EQR. The reserve torque module creates a reserve torque between when the first signal is generated and when the EQR is transitioned to the lean EQR.Type: ApplicationFiled: December 15, 2008Publication date: October 1, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Christopher E. Whitney, Robert J. Genslak, Edward Stuteville, Cheryl A. Williams, Robert C. Simon, JR.
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Publication number: 20080302087Abstract: A diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor is provided. The system generally includes a fuel control module that commands fuel to transition from a rich condition to a lean condition and that commands fuel to transition from the lean condition to the rich condition. A first diagnostic module monitors the post-catalyst oxygen sensor during the transition from the rich condition to the lean condition. A second diagnostic module monitors the catalyst during the transition from the lean condition to the rich condition.Type: ApplicationFiled: June 8, 2007Publication date: December 11, 2008Inventors: Robert J. Genslak, Igor Anilovich, Justin F. Adams, Jeffry A. Helmick, Edward Stuteville, Wesley W. Wald, Vidyapriya Srinivasan