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:
Jun. 07, 1994
Filed:
Nov. 30, 1992
Applicant:
Inventors:
Frank Blischke, Stuttgart, DE;
Lutz Reuschenbach, Stuttgart, DE;
Erich Schneider, Kirchheim, DE;
Eberhard Schnaibel, Hemmingen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60274 ; 60277 ;
Abstract
The invention is directed to a method and an arrangement for making an on-board diagnosis of a catalytic converter. For this purpose, the lambda value of the mixture is shifted in a targeted manner and the jump reaction of a signal of a lambda probe arranged rearward of the catalytic converter is utilized in order to detect the amount of mean-value shift for which the successively reduced oxygen-deficiency input quantities or excess input quantities in the catalytic converter drop below the oxygen-storage capability thereof.