Patents by Inventor Lars-Gunnar CARLSSON

Lars-Gunnar CARLSSON 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).

  • Publication number: 20230211863
    Abstract: A marine drive unit for a boat includes a cooling compartment arranged in a drive unit body. The cooling compartment forms part of a closed cooling circuit, where the cooling circuit is arranged to cool propulsion components of the boat, where the cooling compartment comprises an inlet opening, an inlet channel, a lower end, an outlet channel and an outlet opening, where the inlet channel forms a first flow path for a cooling fluid from the inlet opening to the lower end of the cooling compartment. The outlet channel forms a second flow path for the cooling fluid from the lower end of the cooling compartment to the outlet opening, thereby allowing heat from the cooling fluid to dissipate through the outer wall of the drive unit.
    Type: Application
    Filed: November 2, 2022
    Publication date: July 6, 2023
    Applicant: VOLVO PENTA CORPORATION
    Inventors: Anders Rydström, Stig Johansson, Lars-Gunnar Carlsson, Stefan Johansson
  • Publication number: 20230036549
    Abstract: A marine propulsion unit includes a stern drive mounted to a transom. The stern drive comprises an upper unit enclosed in a stern drive housing and a lower unit enclosed in a gearbox housing; wherein the gearbox housing contains a gearbox arranged to drive at least one propeller. The propulsion unit further comprises at least two electric motors arranged in the stern drive housing, which electric motors are mounted with vertical output shafts; a planetary gear set arranged between the at least two electric motors and the gearbox, and a vertical shaft that is attached to a ring gear of the planetary gear set at its upper end and is connected to the gearbox at its lower end; wherein the output shaft of each electric motor is connected to a planetary gear arranged in the planetary gear set to drive the ring gear and the vertical shaft connected to the gearbox.
    Type: Application
    Filed: December 20, 2019
    Publication date: February 2, 2023
    Applicant: VOLVO PENTA CORPORATION
    Inventor: Lars-Gunnar CARLSSON
  • Publication number: 20220111829
    Abstract: A method for controlling a hybrid electric driveline 2, comprising an internal combustion engine 3 and an electric machine 5 configured in parallel for driving a propulsion member 9, comprising the steps of: driving the driveline in generator mode, where the electric machine provides a charge current to a battery 11 and where the internal combustion engine provides positive driving torque to the propulsion member, and limiting the maximal available torque from the internal combustion engine to a predetermined torque limitation value depending on the rotational speed of the internal combustion engine.
    Type: Application
    Filed: October 6, 2021
    Publication date: April 14, 2022
    Applicant: VOLVO PENTA CORPORATION
    Inventor: Lars-Gunnar CARLSSON