Title:
PARTICULATE MATTER SENSOR
Document Type and Number:
WIPO Patent Application WO2005066611
Kind Code:
A3
Abstract:
A sensor for detecting particulate matter in an exhaust stream of an engine. The sensor may be a sparkplug-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.
Inventors:
RHODES MICHAEL L (US)
KITTELSON DAVID B (US)
MA HONGBIN (US)
KRAFTHEFER BRIAN C (US)
KITTELSON DAVID B (US)
MA HONGBIN (US)
KRAFTHEFER BRIAN C (US)
Application Number:
PCT/US2004/042609
Publication Date:
October 27, 2005
Filing Date:
December 15, 2004
Export Citation:
Assignee:
HONEYWELL INT INC (US)
RHODES MICHAEL L (US)
KITTELSON DAVID B (US)
MA HONGBIN (US)
KRAFTHEFER BRIAN C (US)
RHODES MICHAEL L (US)
KITTELSON DAVID B (US)
MA HONGBIN (US)
KRAFTHEFER BRIAN C (US)
International Classes:
F02D35/02; F02D41/14; G01N15/06; (IPC1-7): G01N15/06
Foreign References:
| US6192740B1 | 2001-02-27 | |||
| DE19853841A1 | 1999-06-02 | |||
| DE19536705A1 | 1997-04-03 | |||
| EP0353196A1 | 1990-01-31 |
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