Diesel particulate filter monitoring using acoustic sensing

Details Diesel particulate filter monitoring using acoustic sensing Diesel particulate filter monitoring using acoustic sensing

2005-11-15

2005-11-15

Smith, Duane (Department: 1724)

Gas separation: processes

With control responsive to sensed condition

C095S273000, C096S417000, C055S385300, C055S523000, C055SDIG003, C060S311000, C073S038000, C073S040000, C073S04050A, C073S049700

Reexamination Certificate

active

06964694

ABSTRACT:
A particulate filter system is provided including an exhaust system transporting emissions from an engine. A filter such as a diesel particulate filter is disposed in the exhaust system. An acoustic sensor is associated with the exhaust system for detecting one or more frequencies passing through the filter. The frequency corresponds to a filter state indicative of a clean, full, loading, or failed filter. One or more acoustic sensors may fluidly or mechanically coupled to portions of the exhaust system to determine the frequency caused by the exhaust flow through the filter. The acoustic emissions from the filter may be used to compare to a known filter state to determine the present filter state. Alternatively, more sophisticated mathematical approaches may be used in which processed filter information is compared to a known filter state to determine the present filter state.

REFERENCES:
patent: 4064962 (1977-12-01), Hunt
patent: 5497099 (1996-03-01), Walton
patent: 5831223 (1998-11-01), Kesselring
patent: 6637267 (2003-10-01), Fiebelkorn et al.
patent: 6666070 (2003-12-01), Hagg et al.
patent: 102 42 300 (2004-03-01), None
patent: 7-102941 (1995-04-01), None
patent: 7-310525 (1995-11-01), None
patent: 8-121150 (1996-05-01), None

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