Patents by Inventor Pascal Tissot
Pascal Tissot 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: 8731790Abstract: A control system includes a shift detection module, a request generation module, and a request setting module. The shift detection module detects when a transmission is executing a shift. The request generation module generates a transmission torque request to cause an engine to increase a transmission input shaft speed to a desired speed at a desired gear ratio when the transmission is executing the shift. The request setting module selectively sets the transmission torque request equal to a default torque request when the transmission torque request is greater than a first torque and the engine is coupled to a drive wheel.Type: GrantFiled: November 23, 2010Date of Patent: May 20, 2014Inventors: Richard B. Jess, Stephen Lewis Pudvay, Pascal Tissot, Vincent Holtz, Christopher J. Trush, Timothy J. Hartrey
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Patent number: 8280600Abstract: A method is provided for calibrating an automatic transmission with a torque converter clutch. In order to avoid that the torque converter clutch still has capacity even if the pressure is commanded to be zero without modifying the behavior of the torque converter clutch behavior of all the production, the torque converter clutch minimum offset transmissions are detected and only on these transmissions the torque converter minimum clamp pressure is decreased by a pressure step and the torque converter clutch coast adapt reference cell is increased.Type: GrantFiled: January 30, 2009Date of Patent: October 2, 2012Assignee: GM Global Technology Operations LLCInventors: David Wright, Pascal Tissot, Vincent Holtz, Nicolas Diss, Patrick Dromard
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Publication number: 20120130609Abstract: A control system includes a shift detection module, a request generation module, and a request setting module. The shift detection module detects when a transmission is executing a shift. The request generation module generates a transmission torque request to cause an engine to increase a transmission input shaft speed to a desired speed at a desired gear ratio when the transmission is executing the shift. The request setting module selectively sets the transmission torque request equal to a default torque request when the transmission torque request is greater than a first torque and the engine is coupled to a drive wheel.Type: ApplicationFiled: November 23, 2010Publication date: May 24, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Richard B. Jess, Stephen Lewis Pudvay, Pascal Tissot, Vincent Holtz, Christopher J. Trush, Timothy J. Hartrey
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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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Publication number: 20090325757Abstract: An automatic transmission is provided with a torque converter clutch (TCC) for regulating the slip between the engine speed and the transmission input speed and a method is provided for regulating the slip between the engine speed and the transmission input speed in an automatic transmission with a torque converter clutch. In order to improve the first time shift quality of transmissions, it is proposed that means are provided for learning the valve pressure offset. In first tests it could be stated that the first time shift quality can be considerably improved with a short test which takes place at the end of the vehicle production line. The longer the test time, the better the first time shift quality will be.Type: ApplicationFiled: June 26, 2009Publication date: December 31, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Patrick DROMARD, Vincent HOLTZ, Pascal TISSOT, Nicolas DISS
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Publication number: 20090197736Abstract: A method is provided for calibrating an automatic transmission with a torque converter clutch. In order to avoid that the torque converter clutch still has capacity even if the pressure is commanded to be zero without modifying the behavior of the torque converter clutch behavior of all the production, the torque converter clutch minimum offset transmissions are detected and only on these transmissions the torque converter minimum clamp pressure is decreased by a pressure step and the torque converter clutch coast adapt reference cell is increased.Type: ApplicationFiled: January 30, 2009Publication date: August 6, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: David WRIGHT, Pascal TISSOT, Vincent HOLTZ, Nicolas DISS, Patrick DROMARD
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Publication number: 20090198423Abstract: An automatic transmission is provided with an engine control module and a process for controlling an automatic transmission. In order to assure secure positive torque requests during lift foot upshifts, an automatic transmission is described which includes, but is not limited to a transmission control module with means for sending an upshift positive torque request on CAN and means for an upshift positive torque supervision preventing the transmission from requesting unexpected positive torque. The means for an upshift positive torque supervision are designed to differentiate upshift conditions under which the positive torque is not expected to occur from shift conditions where it is expected to occur. They allow secure positive torque requests during lift foot upshifts.Type: ApplicationFiled: January 30, 2009Publication date: August 6, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Pascal TISSOT, Vincent HOLTZ
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Patent number: 7343241Abstract: An engine start security control system for a vehicle having a transmission that is driven by an engine includes a first module that generates a first engine start flag based on an internal mode switch (IMS) signal and a second module that generates a second engine start flag based on a modified IMS signal. A third module selectively generates an engine start allow signal based on the first and second engine start flags.Type: GrantFiled: May 11, 2006Date of Patent: March 11, 2008Assignee: GM Global Technology Operations, Inc.Inventors: Ananth Krishnan, Pascal Tissot, Hiep T. Do
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Publication number: 20070265765Abstract: An engine start security control system for a vehicle having a transmission that is driven by an engine includes a first module that generates a first engine start flag based on an internal mode switch (IMS) signal and a second module that generates a second engine start flag based on a modified IMS signal. A third module selectively generates an engine start allow signal based on the first and second engine start flags.Type: ApplicationFiled: May 11, 2006Publication date: November 15, 2007Inventors: Ananth Krishnan, Pascal Tissot, Hiep Do
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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