Method for controlling the creeping properties of a motor vehicle

US8328684B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventor

• Markus Klump · Bühl, DE

Key dates

• Filing date: Jun 4, 2009
• Grant date: Dec 11, 2012
• Expiry date: Sep 23, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2500/7044
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A method for controlling a creeping process of a motor vehicle with an internal combustion engine, a torque converter with a pump shell driven by the internal combustion engine and a turbine shell driving an automated transmission and a separation clutch disposed in the torque flow between the internal combustion engine and the torque converter, wherein a creeping process is initiated when a gas pedal for driver control of the internal combustion engine and a brake pedal are not actuated and a driving velocity of the motor vehicle is less than a predetermined value. In order to be able to perform the creeping process with converter slippage and also with slippage of the separation clutch a creep torque transmitted through the separation clutch is adjusted as a function of the slippage of the torque converter for initiating the creeping process and during the creeping process.