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. 06, 2005
Filed:
Dec. 31, 2003
Michael L. Rhodes, Richfield, MN (US);
Brian C. Krafthefer, Stillwater, MN (US);
Hongbin MA, Falcon Heights, MN (US);
David B. Kittelson, Minneapolis, MN (US);
Michael L. Rhodes, Richfield, MN (US);
Brian C. Krafthefer, Stillwater, MN (US);
Hongbin Ma, Falcon Heights, MN (US);
David B. Kittelson, Minneapolis, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A sensor for detecting particulate matter in an exhaust stream of an engine. The sensor may be a spark-plug-like device having an extended center electrode composed of a stainless steel or other material. The electrode may have a thin passivating layer formed on it. The layer may be grown or deposited on the electrode within the exhaust system. The sensor may detect charge transients indicative of particulate concentration in the exhaust stream. Information about particulate matter in the exhaust system along with other engine information may be processed for controlling or adjusting parameters of the engine to affect the particulate matter in the exhaust system.