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Title: Particulate matter sensor

Patent ·
OSTI ID:1531499
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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.

Research Organization:
Honeywell International Inc., Morristown, NJ (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC04-02AL67636; B09380012
Assignee:
Honeywell International Inc. (Morristown, NJ)
Patent Number(s):
6,971,258
Application Number:
10/749,498
OSTI ID:
1531499
Resource Relation:
Patent File Date: 2003-12-31
Country of Publication:
United States
Language:
English

References (13)

Self-recovering soot detector, particularly to monitor carbon content in diesel engine exhaust gases patent December 1981
Method and apparatus for controlling diesel engine exhaust gas recirculation partly as a function of exhaust particulate level patent December 1984
Particulate sensor system patent October 2003
Means and method for measuring and controlling smoke from an internal combustion engine patent December 1991
Method and apparatus for detecting particles in a flow patent February 2001
Combustion process patent-application December 2003
Method of detecting spark plug fouling and ignition system having means for carrying out the same patent January 2003
Combustion initiators employing reduced work function stainless steel electrodes patent April 1999
Method for measuring the proportion of particles in the exhaust gases from an internal combustion engine patent October 2002
Ignition plug for an internal combustion engine provided with an ionization current detector electrode patent January 1993
Spark plug with center electrode and surrounding ground electrode patent June 2003
Acoustic sensing patent October 1997
Method of producing a spark plug patent January 2002

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