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:
Jan. 05, 2016
Filed:
Mar. 30, 2006
Applicant:
Bodo Odendall, Buxheim, DE;
Inventor:
Bodo Odendall, Buxheim, DE;
Assignee:
AUDI AG, Ingolstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F02D 41/1439 (2013.01); F02D 41/1479 (2013.01);
Abstract
A process is proposed for determining the lambda value upstream from the exhaust catalytic converter in which variation in the lambda value (Δλ) from the stoichiometric value is determined on the basis of variation in the charging (ΔOSC) of the oxygen reservoir () of the exhaust catalytic converter () and variation in the charging (ΔOSC) of the oxygen reservoir () is ascertained from the voltage signal (U) of a binary lambda probe () associated with the exhaust catalytic converter (). In accordance with the proposal a control probe upstream from the exhaust catalytic converter can be omitted; this results in cost savings.