Patents by Inventor Shailesh Shrikant Kozarekar

Shailesh Shrikant Kozarekar 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: 10314207
    Abstract: A power-module assembly includes plates defining pockets and arranged in a stack such that the pockets cooperate to define coolant chambers interleaved with the plates. The assembly further includes cards having a power module encased in a frame. The frame has an outward projecting spacer, and each card is disposed in a corresponding one of the chambers with the spacer contacting a wall of the corresponding chamber to form a coolant passage between the wall and the card.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: June 4, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Vincent T. Skalski, Serdar Hakki Yonak, Shailesh Shrikant Kozarekar
  • Patent number: 10128786
    Abstract: A vehicle may include an inverter, a motor coupled to the inverter, and a traction battery coupled to the inverter and having a terminal voltage equal to a rail voltage between rails of the inverter such that the rail voltage is unregulated. The vehicle may also include a voltage converter configured to reduce the terminal voltage below an intermediate bus voltage threshold on an intermediate bus, and an auxiliary converter configured to draw power from the intermediate bus to supply auxiliary loads.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: November 13, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Fazal Urrahman Syed, Shailesh Shrikant Kozarekar
  • Publication number: 20180205341
    Abstract: A vehicle may include an inverter, a motor coupled to the inverter, and a traction battery coupled to the inverter and having a terminal voltage equal to a rail voltage between rails of the inverter such that the rail voltage is unregulated. The vehicle may also include a voltage converter configured to reduce the terminal voltage below an intermediate bus voltage threshold on an intermediate bus, and an auxiliary converter configured to draw power from the intermediate bus to supply auxiliary loads.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 19, 2018
    Inventors: Fazal Urrahman Syed, Shailesh Shrikant Kozarekar
  • Publication number: 20180166201
    Abstract: A vehicle is provided with a transmission and an inductor assembly that is mounted within a chamber of the transmission. The inductor assembly includes a coil, a core and an insulator having first and second portions that are oriented toward each other. Each portion includes a base, a support extending from the base, and a spool extending transversely from the support to engage the other portion. Each spool includes an external surface for supporting the coil and a cavity extending therethrough for receiving the core.
    Type: Application
    Filed: February 8, 2018
    Publication date: June 14, 2018
    Inventors: Behzad VAFAKHAH, Shailesh Shrikant KOZAREKAR, Shahram ZAREI, Brandon DOBBINS, Vincent SKALSKI, Sudhir KUMAR
  • Patent number: 9892842
    Abstract: A vehicle is provided with a transmission and an inductor assembly that is mounted within a chamber of the transmission. The inductor assembly includes a coil, a core and an insulator having first and second portions that are oriented toward each other. Each portion includes a base, a support extending from the base, and a spool extending transversely from the support to engage the other portion. Each spool includes an external surface for supporting the coil and a cavity extending therethrough for receiving the core.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 13, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Behzad Vafakhah, Shailesh Shrikant Kozarekar, Shahram Zarei, Brandon Dobbins, Vincent Skalski, Sudhir Kumar
  • Patent number: 9855850
    Abstract: A voltage converter includes a switch having a switching loss that decreases as a switching frequency of the switch decreases. The voltage converter further includes a controller programmed to vary the switching frequency based on a duty cycle of the switch and a current input to the switch to reduce switching losses or reduce a ripple current magnitude.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: January 2, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Lihua Chen, Shailesh Shrikant Kozarekar, Yan Zhou, Mohammed Khorshed Alam, Shahram Zarei, Fazal Urrahman Syed
  • Publication number: 20170363408
    Abstract: A method according to an exemplary aspect of the present disclosure includes, among other things, detecting a position, including a polarity, of a rotor to detect incorrect rotor position offset of an electric machine without generating torque or motion within the electric machine.
    Type: Application
    Filed: September 5, 2017
    Publication date: December 21, 2017
    Inventors: Michael W. DEGNER, Shailesh Shrikant KOZAREKAR, Daniel Richard LUEDTKE
  • Patent number: 9781867
    Abstract: A power module assembly includes opposing end caps collectively having coolant ports and a row of cards that each have a major side defining a projection extending across the card. A side panel extends between the end caps such that the panel and row define a channel in fluid communication with the ports and configured to convey coolant directly across the cards. The side panel defines a groove that receives the projections.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: October 3, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Serdar Hakki Yonak, Vincent Skalski, Shailesh Shrikant Kozarekar
  • Patent number: 9766052
    Abstract: A method according to an exemplary aspect of the present disclosure includes, among other things, detecting a position, including a polarity, of a rotor to detect incorrect rotor position offset of an electric machine without generating torque or motion within the electric machine.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: September 19, 2017
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Michael W. Degner, Shailesh Shrikant Kozarekar, Daniel Richard Luedtke
  • Publication number: 20170245401
    Abstract: A power module assembly includes opposing end caps collectively having coolant ports and a row of cards that each have a major side defining a projection extending across the card. A side panel extends between the end caps such that the panel and row define a channel in fluid communication with the ports and configured to convey coolant directly across the cards. The side panel defines a groove that receives the projections.
    Type: Application
    Filed: February 19, 2016
    Publication date: August 24, 2017
    Inventors: Serdar Hakki YONAK, Vincent SKALSKI, Shailesh Shrikant KOZAREKAR
  • Publication number: 20170166064
    Abstract: A voltage converter includes a switch having a switching loss that decreases as a switching frequency of the switch decreases. The voltage converter further includes a controller programmed to vary the switching frequency based on a duty cycle of the switch and a current input to the switch to reduce switching losses or reduce a ripple current magnitude.
    Type: Application
    Filed: December 14, 2015
    Publication date: June 15, 2017
    Inventors: Lihua CHEN, Shailesh Shrikant KOZAREKAR, Yan ZHOU, Mohammed Khorshed ALAM, Shahram ZAREI, Fazal Urrahman SYED
  • Patent number: 9643481
    Abstract: A family of hybrid electric transmissions operate in at least three modes based on selective engagement of shift elements. In a low mode, torque in a mechanical power flow path is multiplied for better low speed performance. At higher vehicle speeds, the transmission shifts into a high mode to improve efficiency. Some embodiments include a reverse mode. In other embodiments, a series mode may be used in reverse. The shift elements may include friction clutches, positive engagement clutches, and controllable one way clutches.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: May 9, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Gregory Daniel Goleski, Shailesh Shrikant Kozarekar, David Allen Janson
  • Publication number: 20170084375
    Abstract: A vehicle is provided with a transmission having an inductor assembly. The inductor assembly is mounted within the transmission such that it is directly cooled by transmission fluid through at least one of spraying, splashing and immersion. The transmission includes at least one gear that is configured to, when rotating, transmit torque between an input and output of the transmission and splash fluid onto the inductor assembly to cool the inductor assembly.
    Type: Application
    Filed: December 2, 2016
    Publication date: March 23, 2017
    Inventors: Behzad VAFAKHAH, Brian Richard LIGHT, Brandon DOBBINS, Shailesh Shrikant KOZAREKAR, Sudhir KUMAR
  • Publication number: 20170057362
    Abstract: A vehicle may include an electric machine, a traction battery, and a solar panel array. The vehicle may further include circuitry electrically connected with the battery and array. The circuitry may include at least one switch configured to close when activated by a calibrated maximum holding power to permit energy to flow from the array to the battery.
    Type: Application
    Filed: November 11, 2016
    Publication date: March 2, 2017
    Inventors: Fazal Urrahman Syed, Venkatapathi Raju Nallapa, Shailesh Shrikant Kozarekar, Michael Edward Loftus, Shane Schulze, Robert K. Taenaka, Donald Charles Franks, Ming Lang Kuang, Venkateswara Anand Sankaran
  • Patent number: 9581234
    Abstract: A vehicle electrical power system includes a variable voltage converter. The variable voltage converter includes an inductor assembly having a housing that defines a chamber containing dielectric fluid. An inductor is disposed within the chamber and is in contact with the fluid. The power system also includes a pump configured to circulate the dielectric fluid to cool the inductor.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: February 28, 2017
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Myung Ki Sung, Edward Chan-Jiun Jih, Michael W. Degner, Shailesh Shrikant Kozarekar, Behzad Vafakhah, Shahram Zarei, Brandon Dobbins, Vincent Skalski, Brian Richard Light, Sudhir Kumar
  • Patent number: 9545839
    Abstract: A method for controlling a hybrid electrical vehicle powertrain having an engine that is a source of power during forward drive and an electric motor that is a source of reverse driving power. A desired engine power during reverse drive is achieved by operating the engine at an increased speed that is greater than an optimum speed for a given engine power.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: January 17, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Shunsuke Okubo, Ming Lang Kuang, Fazal Urrahman Syed, Carol Louise Okubo, Shailesh Shrikant Kozarekar
  • Patent number: 9543069
    Abstract: A vehicle is provided with a transmission having an inductor assembly. The inductor assembly is mounted within the transmission such that it is directly cooled by transmission fluid through at least one of spraying, splashing and immersion. The transmission includes at least one gear that is configured to, when rotating, transmit torque between an input and output of the transmission and splash fluid onto the inductor assembly to cool the inductor assembly.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: January 10, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Behzad Vafakhah, Brian Richard Light, Brandon Dobbins, Shailesh Shrikant Kozarekar, Sudhir Kumar
  • Patent number: 9511773
    Abstract: A method for controlling a hybrid vehicle having a transmission coupled to vehicle wheels, an internal combustion engine, a planetary gearset coupled to the engine and to a differential output shaft to drive the vehicle wheels, a traction motor coupled through gearing to the differential output shaft and the planetary gearset, a generator coupled to the planetary gearset and electrically coupled to the traction motor, a traction battery coupled to the generator and the traction motor, and at least one controller in communication with the engine, the traction motor, and the generator includes limiting engine speed in response to a wheel slip event to an engine speed limit based on motor speed and generator speed to prevent the generator speed from exceeding a corresponding threshold when the wheel slip event terminates.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: December 6, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Shunsuke Okubo, Jonathan Andrew Butcher, Shailesh Shrikant Kozarekar
  • Publication number: 20160339777
    Abstract: A family of hybrid electric transmissions operate in at least three modes based on selective engagement of shift elements. In a low mode, torque in a mechanical power flow path is multiplied for better low speed performance. At higher vehicle speeds, the transmission shifts into a high mode to improve efficiency. Some embodiments include a reverse mode. In other embodiments, a series mode may be used in reverse. The shift elements may include friction clutches, positive engagement clutches, and controllable one way clutches.
    Type: Application
    Filed: May 20, 2015
    Publication date: November 24, 2016
    Inventors: Gregory Daniel Goleski, Shailesh Shrikant Kozarekar, David Allen Janson
  • Patent number: 9496751
    Abstract: A vehicle may include an electric machine, a traction battery, and a solar panel array. The vehicle may further include circuitry electrically connected with the battery and array. The circuitry may include at least one switch configured to close when activated by a calibrated maximum holding power to permit energy to flow from the array to the battery.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: November 15, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Fazal Urrahman Syed, Venkatapathi Raju Nallapa, Shailesh Shrikant Kozarekar, Michael Edward Loftus, Shane Schulze, Robert K. Taenaka, Donald Charles Franks, Ming Lang Kuang, Venkateswa Anand Sankaran