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:
Oct. 02, 2007
Filed:
Oct. 20, 2003
Rainer Buck, Tamm, DE;
Andreas Kratter, Besigheim, DE;
Dirk Foerstner, Stuttgart, DE;
Michael Walter, Kornwestheim, DE;
Juergen Sojka, Gerlingen, DE;
Matthias Stegmaier, Waiblingen-Hohenacker, DE;
Rainer Buck, Tamm, DE;
Andreas Kratter, Besigheim, DE;
Dirk Foerstner, Stuttgart, DE;
Michael Walter, Kornwestheim, DE;
Juergen Sojka, Gerlingen, DE;
Matthias Stegmaier, Waiblingen-Hohenacker, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for checking at least three sensors which detect a measured quantity in the area of an internal combustion engine. A measure of the sensor signal of the particular sensor to be checked is compared to a reference signal which is obtained from at least one part of the sensor signals of the sensors to be checked. A sensor is recognized as defective on the basis of a comparison of the measure for the sensor signal with the reference signal. The reference signal is formed, for example, from a mean value of a measure of the sensor signals of at least one part of the sensors to be checked, the individual sensor signals being weighted using correction factors in forming the mean value. The sensors are temperature sensors or pressure sensors, for example, which may be situated in an intake area of the internal combustion engine, on the internal combustion engine itself, in an exhaust area, and/or in an exhaust gas treatment system.