Slip control method for a clutch

US7037239B2 · kind B2 · utility

Assignee

• LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

• Olaf Werner · Laufenburg (Baden), DE
• Thorsten Krause · Laufenburg (Baden), DE
• Klaus Kuepper · Laufenburg (Baden), DE

Key dates

• Filing date: Feb 11, 2004
• Grant date: May 2, 2006
• Expiry date: Feb 11, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2500/70458
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for automatically adjusting slip in an automatic friction clutch arranged between an engine and a gearbox of a motor vehicle. The clutch has a clutch-adjusting positioning drive which adjusts the clutch to a position which is defined by a position set-point signal. The clutch input speed and the clutch output speed are detected using speed sensors and a position set-point signal is produced according to the difference of the speeds (slip speed). The slip speed is equal to a predefined set slip value and is used as a control variable for the transmitted clutch torque. An engine torque is used as a control variable for the clutch instead of the clutch torque or as a complement thereto.