Method and control apparatus for operating a positive shift element of a transmission of a vehicle, transmission and vehicle

US12264739B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Wilhelm Moser · Markdorf, DE
• Alain Tierry Chamaken Kamde · Friedrichshafen, DE

Key dates

• Filing date: Nov 17, 2023
• Grant date: Apr 1, 2025
• Expiry date: Nov 17, 2043

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2200/2094
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a method for operating an interlocking shifting element of a transmission of a vehicle, the interlocking shifting element having shifting element halves which can be moved relative to one another when opening and closing the interlocking shifting element. An electric actuator is arranged to about the relative movement between the shifting element halves when the interlocking shifting element is opened and/or closed. After recognizing a tooth-on-tooth position in the interlocking shifting element, a target torque to be applied at the transmission input is determined as a function of an electric current strength through the electric actuator of the interlocking shifting element, where the target torque is sufficient to resolve the tooth-on-tooth position in the interlocking shifting element.