Patents by Inventor Vincent Holtz
Vincent Holtz 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).
-
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
-
Patent number: 8585552Abstract: A torque converter clutch control system is provided. The system includes: a mode determination module that selects one of a lock low slip regulation mode and a hard lock mode based on a lock request; and a pressure control module that regulates pressure to the torque converter during the lock low slip regulation mode such that a target slip is maintained and commands a maximum pressure to the torque converter during the hard lock mode to prevent slip.Type: GrantFiled: August 1, 2006Date of Patent: November 19, 2013Inventors: Vincent Holtz, Jean Sieffert
-
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
-
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
-
Publication number: 20110184616Abstract: A method is provided for controlling the torque converter clutch (TCC) pressure during power downshift events. In order to provide a method for controlling the torque converter clutch (TCC) pressure during power downshift events, the present invention proposes that an inertia torque is computed at the beginning of the shift and that a pressure compensation is applied on the TCC during the downshift using the inertia torque. With such a pressure compensation it is possible to stay in regulation mode which improves both shift quality and fuel consumption.Type: ApplicationFiled: July 20, 2009Publication date: July 28, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: Vincent Holtz
-
Patent number: 7752021Abstract: A method of controlling hydraulic pressure to a torque converter is provided. The method includes: determining a slip error from a target slip value and a measured slip; integrating said slip error; determining a state space feedback control matrix for said measured slip; determining a state space feedback control matrix for said integrated slip error; and controlling pressure based on said state space feedback control matrix for said measured slip and said state space feedback control matrix for said integrated slip error.Type: GrantFiled: September 1, 2006Date of Patent: July 6, 2010Inventors: Vincent Holtz, Maxence De Dreuille, Marc Rambert
-
Publication number: 20100145586Abstract: A method is provided for controlling the torque converter clutch (TCC) pressure during coast downshift events. In order to provide a method for controlling the TCC pressure during coast downshift events, it is proposed that coast pressure compensation is computed at the beginning of the shift and that the coast pressure compensation is applied on the TCC pressure during the coast downshift. With such pressure compensation it is possible to stay in regulation mode which improves both shift quality and fuel consumption.Type: ApplicationFiled: November 25, 2009Publication date: June 10, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Vincent HOLTZ
-
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
-
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
-
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
-
Patent number: 7510507Abstract: A method of adapting a pressurized fluid supply to a torque converter clutch is provided. The method includes: learning a first pressure point related to an average of ramp pressure and an average of engine torque over a first time period; learning a second pressure point related to a second average of ramp pressure and a second average of engine torque over a second time period; determining a plurality of adapt values based on at least one of an extrapolation and an interpolation between the first pressure point and the second pressure point; and adapting the pressurized fluid to the torque converter clutch based on the plurality of adapt values.Type: GrantFiled: August 1, 2006Date of Patent: March 31, 2009Assignee: GM Global Technology Operations, Inc.Inventors: Christopher J. Trush, Jean Sieffert, Vincent Holtz
-
Publication number: 20080126043Abstract: A method of controlling hydraulic pressure to a torque converter is provided. The method includes: determining a slip error from a target slip value and a measured slip; integrating said slip error; determining a state space feedback control matrix for said measured slip; determining a state space feedback control matrix for said integrated slip error; and controlling pressure based on said state space feedback control matrix for said measured slip and said state space feedback control matrix for said integrated slip error.Type: ApplicationFiled: September 1, 2006Publication date: May 29, 2008Inventors: Vincent Holtz, Maxence De Dreuille, Marc Rambert
-
Publication number: 20080032859Abstract: A method of adapting a pressurized fluid supply to a torque converter clutch is provided. The method includes: learning a first pressure point related to an average of ramp pressure and an average of engine torque over a first time period; learning a second pressure point related to a second average of ramp pressure and a second average of engine torque over a second time period; determining a plurality of adapt values based on at least one of an extrapolation and an interpolation between the first pressure point and the second pressure point; and adapting the pressurized fluid to the torque converter clutch based on the plurality of adapt values.Type: ApplicationFiled: August 1, 2006Publication date: February 7, 2008Inventors: Christopher J. Trush, Jean Sieffert, Vincent Holtz
-
Publication number: 20080032860Abstract: A torque converter clutch control system is provided. The system includes: a mode determination module that selects one of a lock low slip regulation mode and a hard lock mode based on a lock request; and a pressure control module that regulates pressure to the torque converter during the lock low slip regulation mode such that a target slip is maintained and commands a maximum pressure to the torque converter during the hard lock mode to prevent slip.Type: ApplicationFiled: August 1, 2006Publication date: February 7, 2008Inventors: Vincent Holtz, Jean Sieffert
-
Patent number: 7302330Abstract: A method of dynamically controlling pressure to a torque converter clutch (TCC) of a torque converter coupled to a transmission is provided. The method includes: monitoring throttle position; monitoring engine speed; controlling pressure to the torque converter clutch to increase slip after the throttle position indicates a tip-in has occurred and when engine speed is low; regulating at least one of a transmission steady state pressure to the transmission and pressure to the torque converter to maintain the increased slip; and controlling pressure to the torque converter to reduce slip by engaging the torque converter clutch.Type: GrantFiled: September 1, 2006Date of Patent: November 27, 2007Assignee: GM Global Technology Operations, Inc.Inventors: Vincent Holtz, Jean Sieffert, Lionel Toussaint, Regis Casteran, Christopher J. Trush