Patents by Inventor Johan Jonsson

Johan Jonsson 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: 9989109
    Abstract: A method is provided for calibrating a control algorithm of a clutch control unit of a vehicle. The method includes requesting, clutch disengagement or engagement, monitoring clutch actuator position, determining a time interval that starts with the clutch disengagement or engagement request and ends when the clutch actuator has reached a predetermined position, and calibrating an estimated time interval of the control algorithm starting with clutch disengagement or engagement request and ending when the clutch actuator has reached a predetermined position based on the determined time interval. A computer program for implementing the method, as well as a vehicle comprising a clutch control unit calibrated according to the method, are also provided.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: June 5, 2018
    Assignee: Volvo Truck Corporation
    Inventors: Johan Jonsson, Edvard Lundgren
  • Publication number: 20170299000
    Abstract: A method is provided for calibrating a control algorithin of a clutch control unit of a vehicle. The method includes requesting, clutch disengagement, or engagement, monitoring clutch actuator position, determining a time interval that starts with the clutch disengagement or engagement request and ends when the clutch actuator has reached a predetermined position, and calibrating an estimated time interval of the control algorithm starting with clutch disengagement or engagement bequest and when the clutch actuator has reached a predetermined position based on the determined time interval. A computer program for implementing the method, as well as a vehicle comprising a clutch control unit calibrated according to the method, are also provided.
    Type: Application
    Filed: April 29, 2013
    Publication date: October 19, 2017
    Applicant: VOLVO TRUCK CORPORATION
    Inventors: Johan JONSSON, Edvard LUNDGREN
  • Patent number: 8182395
    Abstract: A method for adapting a drive train based upon a PTO load is provided. The method includes continually during vehicle driving determining a torque magnitude indicative of said power take off unit's torque consumption by sensing a fluid pressure produced by a power take off fluid pump. The sensed power take off unit torque consumption is continually compared with an output torque produced by a prime mover. Using the difference from said output torque expected value and the measured PTO torque consumption, a control unit adjusts transmission shifting (if automatic) of a transmission and/or prime mover control because the PTO will cause the prime mover to lose some of its available torque. Based on the PTO load, the engine control will selected the appropriate prime mover torque production and the transmission control unit will select the appropriate start gear, upshift gears, and downshift gears.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: May 22, 2012
    Assignee: Volvo Lastvagnar AB
    Inventor: Johan Jonsson
  • Publication number: 20100022348
    Abstract: A method for adapting a drive train based upon a PTO load is provided. The method includes continually during vehicle driving determining a torque magnitude indicative of said power take off unit's torque consumption by sensing a fluid pressure produced by a power take off fluid pump. The sensed power take off unit torque consumption is continually compared with an output torque produced by a prime mover. Using the difference from said output torque expected value and the measured PTO torque consumption, a control unit adjusts transmission shifting (if automatic) of a transmission and/or prime mover control because the PTO will cause the prime mover to lose some of its available torque. Based on the PTO load, the engine control will selected the appropriate prime mover torque production and the transmission control unit will select the appropriate start gear, upshift gears, and downshift gears.
    Type: Application
    Filed: February 21, 2007
    Publication date: January 28, 2010
    Applicant: Volvo Lastvagnar AB
    Inventor: Johan Jonsson