Process for controlling a twin clutch

US8167774B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Gerd Jaeggle · Lichtenau, DE
• Juergen Eich · Laufenburg (Baden), DE

Key dates

• Filing date: Apr 3, 2009
• Grant date: May 1, 2012
• Expiry date: Aug 31, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19274
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A process for controlling a twin clutch transmission with two partial drive trains with respectively a friction clutch interposed between an internal combustion engine and the partial drive train is provided. If the transmission capacity of a friction clutch falls below the engine torque, engine intervention takes place. If the clutch temperature rises further above a default value, an emergency operation is initiated, in which the affected partial drive train is deactivated by opening the affected friction clutch, a preselection strategy used in the other partial drive train is changed and the other partial drive train is activated.