Method for the on-board functional diagnosis of a soot sensor in a motor vehicle and/or for the detection of further constituents in the soot

US8490465B2 · kind B2 · utility

Assignee

• CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

• Johannes Ante · Regensburg, DE
• Rudolf Bierl · Regensburg, DE
• Markus Herrmann · Scheidegg, DE
• Andreas Ott · Erfurt, DE
• Willibald Reitmeier · Hohenschambach, DE
• Denny Schaedlich · Neustadt, DE
• Manfred Weigl · Viehhausen, DE
• Andreas Wildgen · Nittendorf, DE

Key dates

• Filing date: Jul 14, 2010
• Grant date: Jul 23, 2013
• Expiry date: Aug 13, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for on-vehicle functional diagnosis of a soot sensor and/or for detecting further components in the soot in a motor vehicle having an internal combustion engine, the soot sensor connected electrically to an evaluation circuit. To specify a method for functional diagnosis of a soot sensor and/or for detecting further components in the soot, by which it is possible to detect a faulty soot sensor and/or further components in the soot in an economical manner, the evaluation circuit measures a temperature coefficient of the soot sensor and detects the faultiness of the soot sensor and/or the presence of further components in the soot from the temperature coefficient of the soot sensor.