Method for the fail-safe operation of a hybrid vehicle for the controlled initiation of a substitute measure allowing an operation of the vehicle under emergency conditions, and device for implementing this method

US8548658B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Ute Rollmann · Stuttgart, DE
• Peter Ahner · Eppelheim, DE
• Michael Bildstein · Stuttgart, DE
• Michael Lehner · Gränichen, CH
• Felix Reber · Ludwigsburg, DE
• Oliver Kaefer · Murr, DE

Key dates

• Filing date: Nov 19, 2008
• Grant date: Oct 1, 2013
• Expiry date: Apr 23, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/7072
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for the fail-safe operation of a hybrid vehicle having an internal combustion engine, an electric motor, and additional vehicle assemblies. A substitute measure that then still allows the vehicle to be operated under emergency running conditions is initiated if a vehicle assembly fails. A performance quantity that is characteristic of the driving-dynamics situation in which the vehicle finds itself is recorded prior to initiating the substitute measure, and is compared to at least one limit value. The substitute measure is initiated if the limit value is exceeded or not attained. A device which includes a device for implementing such a method is also provided.