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Particulate matter sensor with a heater

Patent ·
OSTI ID:1025542
An apparatus to detect particulate matter. The apparatus includes a sensor electrode, a shroud, and a heater. The electrode measures a chemical composition within an exhaust stream. The shroud surrounds at least a portion of the sensor electrode, exclusive of a distal end of the sensor electrode exposed to the exhaust stream. The shroud defines an air gap between the sensor electrode and the shroud and an opening toward the distal end of the sensor electrode. The heater is mounted relative to the sensor electrode. The heater burns off particulate matter in the air gap between the sensor electrode and the shroud.
Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-06NT42966
Assignee:
Board of Regents, University of Texas System (Austin, TX)
Patent Number(s):
7,998,417
Application Number:
12/196,478
OSTI ID:
1025542
Country of Publication:
United States
Language:
English

References (2)

Time-Resolved Characterization of Diesel Particulate Emissions. 2. Instruments for Elemental and Organic Carbon Measurements journal May 2001
Time Resolved Characterization of Diesel Particulate Emissions. 1. Instruments for Particle Mass Measurements journal February 2001

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