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. 08, 2009
Filed:
Dec. 18, 2006
David B. Kittelson, Minneapolis, MN (US);
Brian C. Krafthefer, Stillwater, MN (US);
Hongbin MA, Columbus, IN (US);
Michael L. Rhodes, Richfield, MN (US);
David B. Kittelson, Minneapolis, MN (US);
Brian C. Krafthefer, Stillwater, MN (US);
Hongbin Ma, Columbus, IN (US);
Michael L. Rhodes, Richfield, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
Method and system of onboard diagnostics in engine emissions monitoring, particularly for detecting anomalous cylinder behavior. In some embodiments, at least one sensor in the exhaust path measures electric charge that is indicative of particulate matter. In some embodiments, at least one sensor measures oxides of nitrogen. The indications of instantaneous emissions can be used to effect real-time adjustments in engine control, and can be logged for maintenance purposes.