Method for the operation of a transmission device

US8496562B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Jörg Arnold · Markdorf, DE
• Klaus Steinhauser · Kreßbronn, DE
• Valentine Herbeth · Friedrichshafen, DE
• Christian Popp · Kreßbronn, DE
• Thilo Schmidt · Meckenbeuren, DE
• Peter Ziemer · Tettnang, DE
• Gabor Diosi · Friedrichshafen, DE
• Christoph Margraf · Markdorf, DE

Key dates

• Filing date: Jan 13, 2010
• Grant date: Jul 30, 2013
• Expiry date: Apr 5, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2306/46
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A method is described for the operation of a transmission device (1) with a plurality of frictional shift elements (A, D, E, F) and at least one interlocking shift element (B, C) for obtaining various gear ratios. When a command is received for a gearshift during which the interlocking shift element (C) has to be changed from an open to a closed operating condition, the interlocking shift element (C) is at least approximately synchronized by increasing the transmission capacity of at least one frictional shift element (A) which does not have to be engaged in the force flow either to obtain the gear ratio that is to be disengaged or to obtain the gear ratio that is to be engaged.