The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2014
Filed:
Jul. 22, 2010
Peter Plonka, Remseck, DE;
Alexander Bludau, Novi, MI (US);
Benedikt Feldmann, Vaihingen/Enz, DE;
Thomas Steinert, Weinstadt, DE;
Wolfgang Mueller, Fellbach, DE;
Peter Plonka, Remseck, DE;
Alexander Bludau, Novi, MI (US);
Benedikt Feldmann, Vaihingen/Enz, DE;
Thomas Steinert, Weinstadt, DE;
Wolfgang Mueller, Fellbach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for dynamically diagnosing an exhaust gas probe. A target/actual comparison is performed between a calculated O2 signal and an O2 signal measured with the exhaust gas probe, for a step load transition. A device for dynamically diagnosing an exhaust gas probe disposed in an exhaust duct of an internal combustion engine. An output signal is fed to an engine controller connected to additional input signals providing information about intake air mass and fuel metering. The engine controller comprises devices for determining a calculated O2 signal from the information about the input air mass and the fuel metering and devices for filtering and/or gradient forming and/or integrating the calculated O2 signal and an O2 signal measured by the exhaust probe. A target/actual comparison between the calculated O2 signal and the measured O2 signal, can be performed for a step load transition.