Test method for an exhaust gas probe of an internal combustion engine, in particular for a lambda probe

US7934420B2 · kind B2 · utility

Assignee

• CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

• Sayim Kama · Lappersdorf, DE
• Norbert Sieber · Regensburg, DE

Key dates

• Filing date: Sep 4, 2008
• Grant date: May 3, 2011
• Expiry date: Apr 23, 2029

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D41/1454
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A test method for an exhaust gas probe (8, 9) of an internal combustion engine (3), particularly for a lambda probe, has the following steps: Checking an output signal (λ1, λ2) of the exhaust gas probe (8, 9), detecting a fault state of the exhaust gas probe (8, 9) on the basis of the output signal (λ1, λ2) of the exhaust gas probe (8, 9) and differentiating between different fault states of the exhaust gas probe (8, 9).