Patents by Inventor Herve Scelers
Herve Scelers 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: 7739019Abstract: A rough road detection system for a vehicle comprises a first acceleration sensor that measures vertical acceleration of a component of the vehicle. An adaptive acceleration limits module determines a first acceleration limit based upon a speed of the vehicle. A limit comparison module generates a rough road signal based on a comparison of the first acceleration limit from the adaptive acceleration limits module and the measured acceleration from the first acceleration sensor.Type: GrantFiled: December 20, 2004Date of Patent: June 15, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Dominique Robert, Herve Scelers, Pascal Tissot
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Patent number: 7524265Abstract: A method of inhibiting an overspeed condition in a vehicle powertrain includes monitoring at least one of an engine speed and a transmission input shaft speed of a torque converter that transfers drive torque between an engine and a transmission and determining an operating condition of the vehicle powertrain. The method further includes determining a first threshold speed based on the operating condition and reducing an engine torque request when the at least one of the engine speed and the transmission input shaft speed exceeds the first threshold speed.Type: GrantFiled: July 5, 2006Date of Patent: April 28, 2009Assignee: GM Global Technology Operations, Inc.Inventor: Herve Scelers
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Patent number: 7509202Abstract: A neutral idle hill detection system for a vehicle with an automatic transmission comprises a range selection input device that receives an operating range of a transmission. A throttle position input device receives a throttle position signal. A transmission output speed input device receives a transmission output speed signal. A transmission temperature input device receives a temperature signal. A brake status input device receives a brake signal. A control module receives the range, the throttle position signal, the transmission output speed signal, the temperature signal, and the brake signal, detects a hill condition based on the received signals, and controls a first clutch of the transmission based on the hill condition.Type: GrantFiled: January 17, 2006Date of Patent: March 24, 2009Assignee: General Motors CorporationInventor: Herve Scelers
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Patent number: 7363138Abstract: A method of controlling traction in a vehicle having at least one non-driven wheel speed sensor. Actual vehicle acceleration and a wheel speed difference are detected. At least one of the actual vehicle acceleration and the wheel speed difference is compared to at least one of a predetermined vehicle acceleration and a predetermined wheel speed difference to detect vehicle wheel slip. A wheel torque is reduced in response to detected wheel slip. The foregoing method allows traction control to be installed in many types of vehicles, including vehicles without ABS. More than one type of wheel slip detection can be implemented, and various types of wheel slip can be detected.Type: GrantFiled: October 9, 2003Date of Patent: April 22, 2008Assignee: General Motors CorporationInventors: Herve Scelers, Paul A. Bauerle, Ruobai Zhang, Craig J. Hawkins, Hiep T. Do, Timothy J. Keenan
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Publication number: 20080009391Abstract: A method of inhibiting an overspeed condition in a vehicle powertrain includes monitoring at least one of an engine speed and a transmission input shaft speed of a torque converter that transfers drive torque between an engine and a transmission and determining an operating condition of the vehicle powertrain. The method further includes determining a first threshold speed based on the operating condition and reducing an engine torque request when the at least one of the engine speed and the transmission input shaft speed exceeds the first threshold speed.Type: ApplicationFiled: July 5, 2006Publication date: January 10, 2008Inventor: Herve Scelers
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Patent number: 7247125Abstract: A device and method for fluid delivery in a continuously variable transmission that includes a valve assembly, configured to distribute a fluid, having a first position and a second position. A forward clutch, a reverse clutch, and a torque converter are connected to the valve assembly. The valve assembly in the first position regulates either the forward clutch or the reverse clutch and opens the torque converter. In the second position, the valve assembly closes the forward clutch or the reverse clutch and regulates the torque converter. A controller commands the valve assembly to the first position and detects if the valve assembly is stuck in the second position. The controller is able to detect the valve assembly stuck in the second position and attempt to unstuck it while the continuously variable transmission is in drive.Type: GrantFiled: April 30, 2004Date of Patent: July 24, 2007Assignee: General Motors CorporationInventor: Herve Scelers
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Publication number: 20070168103Abstract: A neutral idle hill detection system for a vehicle with an automatic transmission comprises a range selection input device that receives an operating range of a transmission. A throttle position input device receives a throttle position signal. A transmission output speed input device receives a transmission output speed signal. A transmission temperature input device receives a temperature signal. A brake status input device receives a brake signal. A control module receives the range, the throttle position signal, the transmission output speed signal, the temperature signal, and the brake signal, detects a hill condition based on the received signals, and controls a first clutch of the transmission based on the hill condition.Type: ApplicationFiled: January 17, 2006Publication date: July 19, 2007Inventor: Herve Scelers
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Patent number: 7236872Abstract: A speed sensor instability detection and correction system for use with a vehicle includes a speed sensor output variation extractor monitoring and recording change in output of a speed sensor over time. A speed sensor output variation comparison module detects speed sensor instability based on a comparison between the speed sensor output variation and a predetermined threshold. An output speed determination module selectively determines output speed in alternative ways based on whether speed sensor instability is detected.Type: GrantFiled: November 24, 2003Date of Patent: June 26, 2007Assignee: General Motors CorporationInventor: Herve Scelers
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Publication number: 20060136111Abstract: A rough road detection system for a vehicle comprises a first acceleration sensor that measures vertical acceleration of a component of the vehicle. An adaptive acceleration limits module determines a first acceleration limit based upon a speed of the vehicle. A limit comparison module generates a rough road signal based on a comparison of the first acceleration limit from the adaptive acceleration limits module and the measured acceleration from the first acceleration sensor.Type: ApplicationFiled: December 20, 2004Publication date: June 22, 2006Inventors: Dominique Robert, Herve Scelers, Pascal Tissot
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Publication number: 20050245353Abstract: A device and method for fluid delivery in a continuously variable transmission that includes a valve assembly, configured to distribute a fluid, having a first position and a second position. A forward clutch, a reverse clutch, and a torque converter are connected to the valve assembly. The valve assembly in the first position regulates either the forward clutch or the reverse clutch and opens the torque converter. In the second position, the valve assembly closes the forward clutch or the reverse clutch and regulates the torque converter. A controller commands the valve assembly to the first position and detects if the valve assembly is stuck in the second position. The controller is able to detect the valve assembly stuck in the second position and attempt to unstuck it while the continuously variable transmission is in drive.Type: ApplicationFiled: April 30, 2004Publication date: November 3, 2005Inventor: Herve Scelers
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Publication number: 20050080547Abstract: A method of controlling traction in a vehicle having at least one non-driven wheel speed sensor. Actual vehicle acceleration and a wheel speed difference are detected. At least one of the actual vehicle acceleration and the wheel speed difference is compared to at least one of a predetermined vehicle acceleration and a predetermined wheel speed difference to detect vehicle wheel slip. A wheel torque is reduced in response to detected wheel slip. The foregoing method allows traction control to be installed in many types of vehicles, including vehicles without ABS. More than one type of wheel slip detection can be implemented, and various types of wheel slip can be detected.Type: ApplicationFiled: October 9, 2003Publication date: April 14, 2005Inventors: Herve Scelers, Paul Bauerle, Ruobai Zhang, Craig Hawkins, Hiep Do, Timothy Keenan