Fine particle detector and exhaust gas purification apparatus
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United States of America Patent
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Dec 1, 2020
Grant Date -
Jan 11, 2018
app pub date -
Jul 6, 2017
filing date -
Jul 8, 2016
priority date (Note) -
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Abstract
A fine particle detector includes: a casing part configured to accommodate an object to be heated; an electromagnetic wave generating part configured to generate electromagnetic waves of different frequencies; at least one power sensor configured to measure powers, from the casing part, of the electromagnetic waves that have entered into the casing part; and a fine particle detection controlling part configured to determine, based on the powers of the electromagnetic waves of the different frequencies measured by the at least one power sensor, whether an accumulated amount of fine particles accumulated in the object to be heated is greater than or equal to a predetermined accumulated amount.
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