Knock detection system and method for an amplifier control for a knock signal

US8365579B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Kai Dierssen · Waldbronn, DE
• Stefan Kempf · Alzenau, DE
• Jochen Goebels · Ludwigsburg, DE
• Federico Buganza · Stuttgart, DE
• Anton Kantschar · Lambach, DE
• Frédéric Gabel · Kornwestheim, DE
• Carsten Kluth · Stuttgart, DE
• Oskar Torno · Schwieberdingen, DE
• Werner Haeming · Neudenau, DE
• Robert Sloboda · Yokohama, JP
• Jan Boettger · Burgstädt, DE
• Rudi Eichhorn · Stuttgart, DE
• Andreas Meinken · Leonberg, DE

Key dates

• Filing date: Sep 24, 2008
• Grant date: Feb 5, 2013
• Expiry date: Feb 22, 2029

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D35/027
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus for furnishing an amplified sensor signal of a knock sensor, encompassing an analog amplifier for amplifying the sensor signal in accordance with a first definable gain factor; an analog/digital converter for digitizing the amplified sensor signal into a digitized sensor signal; a digital amplifier for amplifying the digitized sensor signal in accordance with a second definable gain factor; and a control unit in order to furnish the first and the second gain factor as a function of a baseline sound level of the sensor signal, the baseline sound level corresponding to the component of the solid-borne sound signal generated in normal operation without knocking.