Patents by Inventor Muddassar Zahid PIRACHA

Muddassar Zahid PIRACHA 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).

  • Method for synchronisation of a first transmission component
    Patent number: 11884259
    Abstract: A method for performing rotational speed synchronisation of a first transmission component having a first initial rotational speed with a second transmission component having a second initial rotational speed, so that they rotate with the same final rotational speed during a gear switch from an initial driving gear to a final driving gear in a stepped gear transmission for a hybrid electric or electric drive train having an electric traction motor. The method including calculating a total frictional work resulting from performing the total rotational speed synchronisation by means of a mechanical synchroniser of the stepped gear transmission only, and if the calculated total frictional work exceeds a maximal frictional work of the mechanical synchroniser, performing the rotational speed synchronisation by means of both the electric traction motor and the mechanical synchroniser.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: January 30, 2024
    Assignee: Ningbo Geely Automobile Research & Development Co., Ltd.
    Inventor: Muddassar Zahid Piracha
  • METHOD FOR SYNCHRONISATION OF A FIRST TRANSMISSION COMPONENT
    Publication number: 20230130443
    Abstract: A method for performing rotational speed synchronisation of a first transmission component having a first initial rotational speed with a second transmission component having a second initial rotational speed, so that they rotate with the same final rotational speed during a gear switch from an initial driving gear to a final driving gear in a stepped gear transmission for a hybrid electric or electric drive train having an electric traction motor. The method including calculating a total frictional work resulting from performing the total rotational speed synchronisation by means of a mechanical synchroniser of the stepped gear transmission only, and if the calculated total frictional work exceeds a maximal frictional work of the mechanical synchroniser, performing the rotational speed synchronisation by means of both the electric traction motor and the mechanical synchroniser.
    Type: Application
    Filed: December 2, 2022
    Publication date: April 27, 2023
    Inventor: Muddassar Zahid PIRACHA
  • Method and system for gear engagement
    Patent number: 11434960
    Abstract: A method for motion control of a shift sleeve in a stepped gear transmission during a synchronization and gear engagement sequence for avoiding gear teeth interference, wherein the stepped gear transmission includes an axially displaceable shift sleeve arranged on and rotationally secured to a shaft, and a constant mesh gear wheel arranged on and rotatable relative to said shaft.
    Type: Grant
    Filed: April 11, 2021
    Date of Patent: September 6, 2022
    Assignee: NINGBO GEELY AUTOMOBILE RESEARCH & DEVELOPMENT CO.
    Inventors: Johan Hellsing, Muddassar Zahid Piracha
  • METHOD AND SYSTEM FOR GEAR ENGAGEMENT
    Publication number: 20210239164
    Abstract: A method for motion control of a shift sleeve in a stepped gear transmission during a synchronization and gear engagement sequence for avoiding gear teeth interference, wherein the stepped gear transmission includes an axially displaceable shift sleeve arranged on and rotationally secured to a shaft, and a constant mesh gear wheel arranged on and rotatable relative to said shaft.
    Type: Application
    Filed: April 11, 2021
    Publication date: August 5, 2021
    Inventors: Johan HELLSING, Muddassar Zahid PIRACHA