Knock system with detection zones

US7526943B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Anthony E. Cubr · Fenton, US
• Craig M. Sawdon · Williamston, US
• Wajdi B. Hamama · Iron River, US
• Karl T. Kiebel · Royal Oak, US
• Robert J. Horner · Dexter, US
• Marilyn L. Kindermann · Milford, US
• Jian Lin · Beverly Hills, US
• Trenton W. Haines · Novi, US
• Eric Ferch · Westland, US
• Hamid M. Esfahan · Ann Arbor, US
• James T. Kurnik · Linden, US
• Weixin Yan · Novi, US

Key dates

• Filing date: Sep 11, 2007
• Grant date: May 5, 2009
• Expiry date: Sep 11, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02P5/152
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A knock detection module for an engine comprises a statistics storage module and a processing module. The statistics storage module stores M times N vibration profiles corresponding to M zones of operation of the engine and N cylinders of the engine, wherein M and N are integers greater than one. The processing module determines in which one of the M zones the engine is operating and determines whether knock has occurred for one of the N cylinders by comparing measured vibration data with a selected one of the vibration profiles corresponding to the one of the M zones and the one of the N cylinders.