Exhaust gas control apparatus and control method for exhaust gas control apparatus
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United States of America Patent
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Nov 27, 2018
Grant Date -
Oct 25, 2018
app pub date -
Apr 20, 2018
filing date -
Apr 25, 2017
priority date (Note) -
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Abstract
An exhaust gas control apparatus includes a dust collection device, an oxidation treatment device, and an ECU. The dust collection device applies a DC voltage between a charging electrode and a counter electrode, and collects particulate matter on an oxidation substrate. The ECU estimates a distribution of a deposition amount of the particulate matter deposited on the oxidation substrate in a flow direction of exhaust gas, based on input information including at least a flow rate of exhaust gas and a mass of particulate matter in exhaust gas, setting information including at least an electric field intensity between the charging electrode and the counter electrode, and history information on the oxidation treatment. The ECU carries out the oxidation treatment when the deposition amount of at least a part of the deposited particulate matter exceeds a threshold.
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