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:
Dec. 13, 2011
Filed:
Jun. 21, 2006
Eberhard Schnaibel, Hemmingen, DE;
Erich Junginger, Stuttgart, DE;
Johannes Kanters, Yokohama, JP;
Thomas Moser, Schwieberdingen, DE;
Frank Kowol, Ludwigsburg, DE;
Reinhard Hein, Loechgau, DE;
Eberhard Schnaibel, Hemmingen, DE;
Erich Junginger, Stuttgart, DE;
Johannes Kanters, Yokohama, JP;
Thomas Moser, Schwieberdingen, DE;
Frank Kowol, Ludwigsburg, DE;
Reinhard Hein, Loechgau, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A procedure to calculate the Lambda value with a wideband Lambda sensor of an internal combustion engine of a motor vehicle is thereby characterized, in that from the measured pumping electricity and the sensitivities of the wideband Lambda sensor as well as the gas concentration ratios, in the lean operation an oxygen concentration and in the rich operation an oxygen deficit are determined and from these respectively a conclusion is drawn about the Lambda value using the Pischinger Formula.