Method for establishing malfunctions of components of a motor vehicle power train

US7635317B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Rainer Petzold · Friedrichshafen, DE
• Werner Wolfgang · Ravensburg, DE
• Thomas Jager · Meckenbeuren, DE
• Mario Steinborn · Friedrichshafen, DE
• Rupert Kramer · Friedrichshafen, DE
• Franz Bitzer · Friedrichshafen, DE

Key dates

• Filing date: Jan 9, 2006
• Grant date: Dec 22, 2009
• Expiry date: Nov 20, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S477/906
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for establishing malfunctions of components of a motor vehicle power train as well as the reaction to the same. The power train has a drive motor and an automatic transmission with respectively allocated control devices, setting apparatus and sensors, and the transmission input shaft is allocated a torque sensor for recording the transmission input shaft. During operation of the motor vehicle, the functions of the control devices, the operating elements, the sensors and their data transmission apparatus as well as the measured values of the transmission input torque are recorded and checked for signs of malfunction. After recognizing such a malfunction, operations are conducted by means of which the motor vehicle can be further operated in an emergency type of operation or with the aid of which the driving operation can be safely ended.