Patents by Inventor Scott H. Wittkopp
Scott H. Wittkopp 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: 11092096Abstract: An engine system for a vehicle includes an internal combustion engine having an exhaust gas outlet, an exhaust system having a three-way catalyst and a switch-type post oxygen sensor, and an engine control module that controls the engine system. The engine control module includes a first control logic for estimating a three-way catalyst oxygen storage capacity based on a plurality of measured inputs, a second control logic for estimating aging effects of the switch-type post oxygen sensor, and a third control logic that calculates a filtered estimated three-way catalyst oxygen storage capacity for the three-way catalyst.Type: GrantFiled: September 2, 2020Date of Patent: August 17, 2021Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Min Sun, Jonathan M. Davis, Andrew M. Fedewa, Scott H. Wittkopp, Brandon Bishop
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Patent number: 11085848Abstract: A method of estimating the oxygen storage capacity of a catalyst includes providing an engine system having an internal combustion engine and an exhaust system having a catalyst and an oxygen sensor, providing a three-way catalyst observer model having a Kalman filter and a three-way catalyst kinetic model, estimating a three-way catalyst next time step state and a modeling error, linearizing the three-way catalyst observer model, filtering the estimated three-way catalyst next time step state, and calculating a covariance.Type: GrantFiled: September 4, 2019Date of Patent: August 10, 2021Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Min Sun, Jonathan M. Davis, Andrew M. Fedewa, Scott H. Wittkopp, Gionata Cimini
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Patent number: 10578193Abstract: A transmission is connectable to an input member and includes an output transfer gear, first and second transmission input shaft members, first, second, and third countershaft members, first and second sleeve shafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of gears, synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.Type: GrantFiled: August 29, 2016Date of Patent: March 3, 2020Assignee: GM Global Technology Operaitons, LLCInventors: Scott H. Wittkopp, Craig S. Ross
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Patent number: 10451148Abstract: A transmission is provided having an input member, an output member, at least three planetary gear sets, a plurality of interconnecting members and six torque transmitting mechanisms. The torque transmitting mechanisms include clutches and brakes that are actuatable in combinations of three to establish at least ten forward gear ratios and at least one reverse gear ratio.Type: GrantFiled: April 11, 2017Date of Patent: October 22, 2019Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: James M. Hart, Elizabeth I. Wooden, Scott H. Wittkopp
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Patent number: 10337589Abstract: A transmission is provided having an input member, an output member, at least three planetary gear sets, a plurality of interconnecting members and six torque transmitting mechanisms. The torque transmitting mechanisms include clutches and brakes that are actuatable in combinations of three to establish at least ten forward gear ratios and at least one reverse gear ratio.Type: GrantFiled: April 11, 2017Date of Patent: July 2, 2019Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: James M. Hart, Elizabeth I. Wooden, Scott H. Wittkopp
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Publication number: 20170219063Abstract: A transmission is provided having an input member, an output member, at least three planetary gear sets, a plurality of interconnecting members and six torque transmitting mechanisms. The torque transmitting mechanisms include clutches and brakes that are actuatable in combinations of three to establish at least ten forward gear ratios and at least one reverse gear ratio.Type: ApplicationFiled: April 11, 2017Publication date: August 3, 2017Inventors: JAMES M. HART, ELIZABETH I. WOODEN, SCOTT H. WITTKOPP
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Publication number: 20170219060Abstract: A transmission is provided having an input member, an output member, at least three planetary gear sets, a plurality of interconnecting members and six torque transmitting mechanisms. The torque transmitting mechanisms include clutches and brakes that are actuatable in combinations of three to establish at least ten forward gear ratios and at least one reverse gear ratio.Type: ApplicationFiled: April 11, 2017Publication date: August 3, 2017Inventors: JAMES M. HART, ELIZABETH I. WOODEN, SCOTT H. WITTKOPP
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Patent number: 9651118Abstract: A transmission is provided having an input member, an output member, at least three planetary gear sets, a plurality of interconnecting members and six torque transmitting mechanisms. The torque transmitting mechanisms include clutches and brakes that are actuatable in combinations of three to establish at least ten forward gear ratios and at least one reverse gear ratio.Type: GrantFiled: March 6, 2015Date of Patent: May 16, 2017Assignee: GM Global Technology Operations, LLCInventors: James M. Hart, Elizabeth I. Wooden, Scott H. Wittkopp
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Patent number: 9631703Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes and are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.Type: GrantFiled: April 16, 2012Date of Patent: April 25, 2017Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, Scott H. Wittkopp, Clinton E. Carey, James M. Hart
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Patent number: 9539892Abstract: The transmission includes an input shaft rotatable about a first axis of rotation, and a countershaft arranged substantially parallel with the input shaft and rotatable about a second axis of rotation. An output member is operatively connected to rotate in unison with the countershaft. Multiple pairs of intermeshing gears are included, each having a respective synchronizable gear that rotates about one of the input shaft and the countershaft, and a respective fixed gear mounted to the other one of the input shaft and the countershaft to rotate in unison therewith. An electric motor has a rotor concentric with and rotatable about the first axis of rotation. A first synchronizer is selectively engageable to synchronize rotation of the rotor with the input shaft. A second synchronizer is selectively engageable to synchronize rotation of the rotor with one of the synchronizable gears that rotates about the input shaft.Type: GrantFiled: May 30, 2013Date of Patent: January 10, 2017Assignee: GM Global Technology Operations LLCInventors: Craig S. Ross, Scott H. Wittkopp
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Publication number: 20160369869Abstract: A transmission is connectable to an input member and includes an output transfer gear, first and second transmission input shaft members, first, second, and third countershaft members, first and second sleeve shafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of gears, synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.Type: ApplicationFiled: August 29, 2016Publication date: December 22, 2016Inventors: SCOTT H. WITTKOPP, CRAIG S. ROSS
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Patent number: 9453558Abstract: A transmission is connectable to an input member and includes an output transfer gear, first and second transmission input shaft members, first and second countershaft members, first and second sleeve shafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of gears, synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.Type: GrantFiled: July 8, 2014Date of Patent: September 27, 2016Assignee: GM Global Technology Operations, LLCInventors: Scott H. Wittkopp, Craig S. Ross
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Patent number: 9249863Abstract: A transmission includes an input member, an output member, first and second shafts, first and second countershafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.Type: GrantFiled: March 12, 2010Date of Patent: February 2, 2016Assignee: GM Global Technology Operations, LLCInventors: Edward W. Mellet, Scott H. Wittkopp, Craig S. Ross
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Publication number: 20160010725Abstract: A transmission is connectable to an input member and includes an output transfer gear, first and second transmission input shaft members, first and second countershaft members, first and second sleeve shafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of gears, synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.Type: ApplicationFiled: July 8, 2014Publication date: January 14, 2016Inventors: Scott H. Wittkopp, CRAIG S. ROSS
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Publication number: 20150308543Abstract: A transmission includes an input and output member, four planetary gear sets each having first, second and third members, five interconnecting members continuously interconnecting members of the four planetary gear sets and six torque transmitting mechanisms selectively engageable to interconnect one of the first members, second members, and third members with at least one of another of the first members, second members, third members, and a stationary member. The torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.Type: ApplicationFiled: July 1, 2015Publication date: October 29, 2015Inventors: Edward W. Mellet, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 9163704Abstract: A front wheel drive transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing. Each of the clutches and the brake are located within specific areas defined by the planetary gear sets and the housing walls.Type: GrantFiled: January 10, 2011Date of Patent: October 20, 2015Assignee: GM Global Technology Operations, LLCInventors: Clinton E. Carey, Daryl A. Wilton, Edwin T. Grochowski, James M. Hart, Scott H. Wittkopp, Andrew W. Phillips
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Patent number: 9097323Abstract: An automated electric manual transmission (EMT) has an input member, an output member, and at least one shaft. The input member and the at least one shaft are rotatable about a first axis of rotation. A countershaft is substantially parallel with the at least one shaft and is rotatable about a second axis of rotation. The output member is operatively connected to rotate with the countershaft. A transmission controller controls engagement of a plurality of torque-transmitting mechanisms to selectively establish different gear ratios from the at least one shaft to the transfer shaft through pairs of intermeshing gears. An electric motor and a planetary gear set are concentric with the first axis of rotation. The electric motor can provide torque to a member of the planetary gear set.Type: GrantFiled: November 14, 2012Date of Patent: August 4, 2015Assignee: GM Global Technology Operations LLCInventors: Scott H. Wittkopp, Craig S. Ross
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Patent number: 9074663Abstract: A transmission includes an input and output member, four planetary gear sets each having first, second and third members, five interconnecting members continuously interconnecting members of the four planetary gear sets and six torque transmitting mechanisms selectively engageable to interconnect one of the first members, second members, and third members with at least one of another of the first members, second members, third members, and a stationary member. The torque transmitting mechanisms are selectively engageable in combinations of at least three to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.Type: GrantFiled: May 24, 2013Date of Patent: July 7, 2015Assignee: GM GLOBAL TECHNOLOGY OPERATIONS, LLCInventors: Edward W. Mellet, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Electrically actuated rotating band torque transmitting mechanism for hybrid and other transmissions
Patent number: 9062719Abstract: A torque transmitting mechanism includes a drum attached to one of a first member and a second member, and a shell attached to another of the first member and the second member. The drum and the shell are concentrically disposed about a longitudinal axis, with the shell concentrically disposed about the drum. An electric motor includes a stator, and a first rotor rotatable about the longitudinal axis relative to the stator. A band is coupled to the shell, wrapped around the drum between four and twelve complete revolutions, and includes a first end attached to the first rotor for rotation with the first rotor. The band includes a second end attached to a reaction member. Rotation of the first rotor tightens the band against the drum to bias the drum against the shell, to transmit torque between the first member and the second member.Type: GrantFiled: July 11, 2013Date of Patent: June 23, 2015Assignee: GM Global Technology Operations LLCInventors: Alan G. Holmes, Anthony L. Smith, Scott H. Wittkopp, Anthony J. Corsetti, Scott William Heitzenrater -
Patent number: 8961355Abstract: A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes. A method for controlling the transmission selectively engages the torque transmitting devices in combinations of at least two to establish at least nine forward speed ratios and at least one reverse speed ratio.Type: GrantFiled: July 21, 2011Date of Patent: February 24, 2015Assignee: GM Global Technology Operations, LLCInventors: James M. Hart, Bret M. Olson, Scott H. Wittkopp