Method for monitoring a motor speed sensor

US7555374B2 · kind B2 · utility

Assignees

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US
• Daimler AG · DE
• Chrysler Group LLC · US
• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Peter E. Wu · Brighton, US
• Charles J. Van Horn · Novi, US
• Wei D. Wang · Troy, US
• Syed Naqi · Dearborn, US

Key dates

• Filing date: Oct 8, 2008
• Grant date: Jun 30, 2009
• Expiry date: Oct 8, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/64
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for detecting speed faults in a hybrid powertrain having engine and electric machine speed inputs includes directly sensing the engine and machine speeds and performing comparisons of sensed engine speed with engine speed determined based upon the machine speeds.