Control method for clutch arrangement

US7949453B2 · kind B2 · utility

Assignee

• MAGNA Powertrain GmbH & Co KG · AT

Inventors

• Martin Parigger · Brodingberg, AT
• Thomas Linortner · Graz, AT
• Simon Kaimer · Heiligenkreuz, AT
• Heribert Dietrich · Wolfsberg, AT

Key dates

• Filing date: Aug 12, 2008
• Grant date: May 24, 2011
• Expiry date: Dec 15, 2029

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2500/70605
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A method controlling a clutch arrangement that serves, in a powertrain of a motor vehicle, for the transmission of a torque from an input element to an output element. Starting from an activated state of the clutch arrangement, a respective estimated torque value is calculated in repeating calculation cycles. A torque build-up value is calculated in dependence on at least one speed difference value. A torque reduction value is calculated in dependence on at least the last calculated estimated torque value. The estimated torque value is re-calculated on the basis of the last calculated estimated torque value by up integration of the calculated torque build-up value and down integration of the calculated torque reduction value. The recalculated estimated torque value is compared with a torque threshold value. The clutch arrangement is deactivated when the recalculated estimated torque value is below the torque threshold value.