The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2026
Filed:
Apr. 29, 2022
Ningbo Geely Automobile Research & Development Co., Ltd., Ningbo, CN;
Sri Vishnu Gorantla Narayana Murthy, Gothenburg, SE;
Ningbo Geely Automobile Research & Dev. Co., Ltd., Ningbo, CN;
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, by means of a three-phase AC electric motor that is rotationally connected to the first transmission component, during a gear switch in a stepped gear transmission of a drive train having a switching mechanism enabling the stator windings of the AC electric motor to be selectively connected in star configuration or delta configuration. The method includes obtaining a command, or determining, that a gear switch should be performed; shifting the stator winding configuration of the AC electric motor to delta configuration, or ensuring that the stator winding configuration of the AC electric motor is in delta configuration; and controlling operation of the AC electric motor for accomplishing rotational speed synchronisation of the first and second transmission components.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile