Good checking for vehicle wheel speed sensors

US8467929B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Henrik Bechtler · Stuttgart, DE
• Ravi Bhadange · Farmington, US
• Nachiket Patil · Farmington Hills, US
• Takeshi Tokonaga · Yokohama, JP
• Stefan Mallmann · Kaufbeuren, DE
• Michael Schwab · Crest Hill, US
• Dietmar Stapel · Ditzingen, DE
• Willy Klier · Schwäbisch Gmünd, DE
• Joerg Eesmann · Rheine, DE

Key dates

• Filing date: Aug 20, 2010
• Grant date: Jun 18, 2013
• Expiry date: May 5, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/416
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A controller for determining whether a previously-detected vehicle wheel speed sensor malfunction still exists. The controller includes an electronic, non-volatile memory, and an electronic processing unit connected to the electronic, non-volatile memory. The electronic processing module includes a malfunction monitoring module, a failure handling module, and a signal checking module. The malfunction monitoring module monitors the operation of at least one wheel speed sensor and generates a fault signal when the at least one sensor malfunctions. The failure handling module causes drive cycle information and the fault information to be stored in the electronic, non-volatile memory. The signal checking module performs a signal check on information from the at least one wheel speed sensor. A tell-tale indicator is deactivated and/or a vehicle control system resumes normal operation if the wheel speed sensor passes the signal check.