Patents by Inventor Lawrence A. Kaminsky

Lawrence A. Kaminsky 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: 10167906
    Abstract: A clutch assembly having a first clutch member, a second clutch member axially slidable in a first axial direction to engage the first clutch member and in a second axial direction to disengage from the first clutch member, a spring biasing the second clutch member in one of the axial directions, a piston actuatable to move the second clutch member in the other of the axial directions, thereby overcoming a biasing force of the spring, and a latching device to selectively lock the piston in at least one of the first axial direction and second axial direction. The latching device includes a selectively retractable locking pin. The piston has an external surface defining a slot to receive the locking pin, thereby locking the piston in the first position or the second position. A method of operating the clutch assembly is provided.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: January 1, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Vijay A. Neelakantan, Joseph R. Littlefield, Lawrence A. Kaminsky
  • Publication number: 20180023635
    Abstract: A clutch assembly having a first clutch member, a second clutch member axially slidable in a first axial direction to engage the first clutch member and in a second axial direction to disengage from the first clutch member, a spring biasing the second clutch member in one of the axial directions, a piston actuatable to move the second clutch member in the other of the axial directions, thereby overcoming a biasing force of the spring, and a latching device to selectively lock the piston in at least one of the first axial direction and second axial direction. The latching device includes a selectively retractable locking pin. The piston has an external surface defining a slot to receive the locking pin, thereby locking the piston in the first position or the second position. A method of operating the clutch assembly is provided.
    Type: Application
    Filed: July 19, 2016
    Publication date: January 25, 2018
    Inventors: Vijay A. Neelakantan, Joseph R. Littlefield, Lawrence A. Kaminsky
  • Patent number: 9809130
    Abstract: An electric motor control system for a vehicle includes a vehicle speed module that determines a vehicle speed. A closed loop (CL) module determines a CL torque based on a difference between a target vehicle speed and the vehicle speed. A motor torque module determines a motor torque based on the CL torque and a motor torque request determined based on a position of an accelerator pedal. A switching control module controls switching of an inverter based on the motor torque to control application of power to an electric motor of the vehicle.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: November 7, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Adam J. Heisel, Christopher J. Twarog, Anthony H. Heap, Derek S. Bonderczuk, Krunal P. Patel, Lawrence A. Kaminsky, Nathaniel S. Michaluk, Robert L. Morris, Shaochun Ye, Jeffrey J. Waldner
  • Publication number: 20170136916
    Abstract: An electric motor control system for a vehicle includes a vehicle speed module that determines a vehicle speed. A closed loop (CL) module determines a CL torque based on a difference between a target vehicle speed and the vehicle speed. A motor torque module determines a motor torque based on the CL torque and a motor torque request determined based on a position of an accelerator pedal. A switching control module controls switching of an inverter based on the motor torque to control application of power to an electric motor of the vehicle.
    Type: Application
    Filed: March 24, 2016
    Publication date: May 18, 2017
    Inventors: Adam J. HEISEL, Christopher J. Twarog, Anthony H. Heap, Derek S. Bonderczuk, Krunal P. Patel, Lawrence A. Kaminsky, Nathaniel S. Michaluk, Robert L. Morris, Shaochun Ye, Jeffrey J. Waldner
  • Patent number: 9222576
    Abstract: A vehicle includes a transmission, an electrically-driven fluid pump which supplies pressure to a hydraulically-actuated clutch of the transmission, and pump motor sensors positioned with respect to a pump motor of the fluid pump. The sensors are configured to measure electrical properties of the pump motor, and to output the measured electrical properties as input signals. A controller detects when the hydraulic circuit is fully charged by determining an actual speed of the pump motor. The controller calculates an average pump torque and a slope of the average pump torque for the pump motor using the input signals. A flag is set via the controller indicating that a calibrated line pressure has been attained in the hydraulic circuit when the slope of the average pump torque reaches zero and the speed of the pump motor reaches a calibrated speed.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: December 29, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Matthew R. Knoth, Eric S. Tryon, Lawrence A. Kaminsky, Scott T. Weisgerber
  • Publication number: 20150337950
    Abstract: A vehicle includes a transmission, an electrically-driven fluid pump which supplies pressure to a hydraulically-actuated clutch of the transmission, and pump motor sensors positioned with respect to a pump motor of the fluid pump. The sensors are configured to measure electrical properties of the pump motor, and to output the measured electrical properties as input signals. A controller detects when the hydraulic circuit is fully charged by determining an actual speed of the pump motor. The controller calculates an average pump torque and a slope of the average pump torque for the pump motor using the input signals. A flag is set via the controller indicating that a calibrated line pressure has been attained in the hydraulic circuit when the slope of the average pump torque reaches zero and the speed of the pump motor reaches a calibrated speed.
    Type: Application
    Filed: May 23, 2014
    Publication date: November 26, 2015
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Matthew R. Knoth, Eric S. Tryon, Lawrence A. Kaminsky, Scott T. Weisgerber
  • Patent number: 9097294
    Abstract: A system and method of controlling a clutch fill command based on the hydraulic state of an oncoming clutch is provided. A vehicle includes a hydraulically-actuated oncoming clutch that is configured to engage during a shift event from one operating mode of the vehicle to another. A controller is configured to generate a clutch fill command at an initial time such that completion of the clutch fill command is synchronized with an identified speed profile of the oncoming clutch. The oncoming clutch defines a real-time hydraulic state when the clutch fill command is generated. The controller is configured to generate a real-time acceptable speed margin for the oncoming clutch based at least partially on the real-time hydraulic state of the oncoming clutch. The controller is configured to cancel the clutch fill command if a real-time speed of the oncoming clutch is outside the generated real-time acceptable speed margin.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: August 4, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Lawrence A. Kaminsky, Jy-Jen F. Sah, Besim Demirovic, Pinaki Gupta
  • Patent number: 9062724
    Abstract: A powertrain system includes an internal combustion engine, at least one electric machine and an electro-mechanical transmission operative to transmit torque to a drive line. A method for controlling the powertrain system includes executing an engagement strategy of a one-way clutch device only having capacity in a first direction. The engagement strategy includes modeling a capacity of the one-way clutch device in accordance with a loading step change profile until a first capacity limit of the one-way clutch device is achieved. A continuous reactive load is applied to the one-way clutch device in the first direction to maintain engagement and inhibit lash of the one-way clutch device.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: June 23, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jonathan M. Bolenbaugh, Besim Demirovic, Lawrence A. Kaminsky
  • Patent number: 9026327
    Abstract: A method for controlling a transmission of a powertrain system includes executing a single source shortest path search to identify a preferred shift path originating with an initial powertrain state and terminating at a target powertrain state, wherein the single source shortest path search employs transition-specific costs and situational costs to identify the preferred shift path. The preferred shift path is executed to achieve the target powertrain state.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: May 5, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Lawrence A. Kaminsky, Besim Demirovic, Pinaki Gupta, Anthony H. Heap
  • Patent number: 9008926
    Abstract: A powertrain includes an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and an electric machine adapted to selectively transmit mechanical power to an output member through selective application of a plurality of clutches. A method for controlling the powertrain includes commanding a shift from a fixed gear operating range state to a second operating range state, commanding decreased reactive torque through an off-going clutch during a torque phase of said commanded shift, and decreasing said reactive torque through said off-going clutch through control of engine input torque.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: April 14, 2015
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Anthony H. Heap, Jy-Jen F. Sah, Lawrence A. Kaminsky
  • Patent number: 8996215
    Abstract: A vehicle includes a torque generating device, a transmission, and a controller. The transmission has one or more clutches. The controller executes a method, which includes measuring an amount of slip across an identified offgoing clutches and determining whether the offgoing clutches have slipped prior to a modeled clutch torque capacity reaching zero. A status is assigned indicating that the offgoing clutches are released if the offgoing clutch has slipped prior to the modeled clutch capacity reaching zero. The controller induces slip across the identified offgoing clutches to a calibrated low, non-zero level after recording the value, including by enforcing the low, non-zero slip value using one or more acceleration profiles.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 31, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Pinaki Gupta, Lawrence A. Kaminsky, Sean W. McGrogan, Anthony H. Heap
  • Patent number: 8989930
    Abstract: A powertrain system includes an internal combustion engine configured to transfer torque via a clutch to an input member of a hybrid transmission having torque machines configured to transfer torque thereto. Operation of the engine is controlled to facilitate a change in activation of a clutch between the engine and the input member of the hybrid transmission.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: March 24, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Jy-Jen F. Sah, Anthony H. Heap, Lawrence A. Kaminsky
  • Publication number: 20150032342
    Abstract: A vehicle includes torque sources, a transmission, and a controller programmed to execute a method. In executing the associated method, the controller determines whether continuous output torque is required through a torque exchange. When continuous output torque is required, the controller synchronizes and fills the oncoming clutch, estimates capacity of the oncoming clutch, and expands a short-term torque capacity of the oncoming clutch during the torque exchange, doing so in response to a control objective having a threshold priority. Onset of the torque exchange delays until the short-term torque capacity is sufficient for receiving all torque load from the offgoing clutch without affecting output torque.
    Type: Application
    Filed: July 25, 2013
    Publication date: January 29, 2015
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Pinaki Gupta, Lawrence A. Kaminsky, Sean W. McGrogan
  • Patent number: 8938342
    Abstract: A vehicle includes torque sources, a transmission, and a controller programmed to execute a method. In executing the associated method, the controller determines whether continuous output torque is required through a torque exchange. When continuous output torque is required, the controller synchronizes and fills the oncoming clutch, estimates capacity of the oncoming clutch, and expands a short-term torque capacity of the oncoming clutch during the torque exchange, doing so in response to a control objective having a threshold priority. Onset of the torque exchange delays until the short-term torque capacity is sufficient for receiving all torque load from the offgoing clutch without affecting output torque.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: January 20, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Pinaki Gupta, Lawrence A. Kaminsky, Sean W. McGrogan
  • Patent number: 8888639
    Abstract: A powertrain system includes an internal combustion engine, a first electric machine and an electro-mechanical transmission operative to transmit torque to a driveline. A method for controlling the powertrain system in the presence of a controlled neutral operation of the electro-mechanical transmission being selected includes monitoring vehicle speed, and only when the monitored vehicle speed is indicative of a low-speed zone restricting a transition from a current engine operating state.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: November 18, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Syed Naqi, Lawrence A. Kaminsky, Jy-Jen F. Sah, Shaun C. Bowman, Christopher A. Laurent, George Robison, Silva Hiti, Jonathan M. Bolenbaugh, Ali K. Naqvi, Sasa Lucic
  • Patent number: 8892317
    Abstract: A multi-mode powertrain system includes a transmission configured to transfer torque among an internal combustion engine, torque machines and an output member. A method for controlling the powertrain system includes determining a desired acceleration profile for the internal combustion engine, determining a constrained acceleration profile by imposing prioritized constraints on the desired acceleration profile, integrating the constrained acceleration profile to determine a preferred speed profile, determining a preferred acceleration profile including a derivative of the preferred speed profile constrained by minimum and maximum hard acceleration constraints, and controlling operation of the internal combustion engine in response to the preferred acceleration profile and the preferred speed profile.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: November 18, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Sean W. McGrogan, Anthony H. Heap, Lawrence A. Kaminsky
  • Patent number: 8862350
    Abstract: A powertrain system includes a multi-mode transmission configured to transfer torque among an engine, torque machines, and a driveline. A method for controlling the powertrain includes executing a dual closed-loop control scheme that includes determining an engine-based output torque range employed in a first feedback loop and simultaneously determining a control acceleration-based output torque range employed in a second feedback loop. Engine commands are controlled responsive to the engine-based output torque range and simultaneously a control acceleration is controlled responsive to the control acceleration-based output torque range to achieve an output torque of the powertrain system responsive to an output torque request.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: October 14, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Anthony H. Heap, Lawrence A. Kaminsky, Sean W. McGrogan, Krunal P. Patel
  • Patent number: 8827865
    Abstract: A vehicle includes a powertrain with an engine, first and second torque machines, and a hybrid transmission. A method for operating the vehicle includes operating the engine in an unfueled state, releasing an off-going clutch which when engaged effects operation of the hybrid transmission in a first continuously variable mode, and applying a friction braking torque to a wheel of the vehicle to compensate for an increase in an output torque of the hybrid transmission resulting from releasing the off-going clutch. Subsequent to releasing the off-going clutch, an oncoming clutch which when engaged effects operation of the hybrid transmission in a second continuously variable mode is synchronized. Subsequent to synchronization of the oncoming clutch, the oncoming clutch is engaged.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: September 9, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Ali K. Naqvi, Besim Demirovic, Pinaki Gupta, Lawrence A. Kaminsky
  • Patent number: 8825320
    Abstract: A method for controlling a powertrain includes monitoring a desired synchronous transmission shift during deceleration of an output member including a desired operating range state, monitoring an output speed, predicting output deceleration through the desired synchronous transmission shift, determining a penalty cost associated with the desired synchronous transmission shift based upon an input speed profile resulting from the predicted output deceleration and from the desired synchronous transmission shift, and executing the synchronous transmission shift based upon the penalty cost.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: September 2, 2014
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Anthony H. Heap, Lawrence A. Kaminsky, Jy-Jen F. Sah, Kee Yong Kim
  • Publication number: 20140244119
    Abstract: A multi-mode powertrain system includes a transmission configured to transfer torque among an internal combustion engine, torque machines and an output member. A method for controlling the powertrain system includes determining a desired acceleration profile for the internal combustion engine, determining a constrained acceleration profile by imposing prioritized constraints on the desired acceleration profile, integrating the constrained acceleration profile to determine a preferred speed profile, determining a preferred acceleration profile including a derivative of the preferred speed profile constrained by minimum and maximum hard acceleration constraints, and controlling operation of the internal combustion engine in response to the preferred acceleration profile and the preferred speed profile.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: SEAN W. MCGROGAN, ANTHONY H. HEAP, LAWRENCE A. KAMINSKY