Title:
内燃機関の排気浄化装置
Document Type and Number:
Japanese Patent JP5644289
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To calculate a deposition amount of particulate matter during the automatic stop of an internal combustion engine with high accuracy.SOLUTION: During the automatic stop of a diesel engine, an oxidization amount (PM oxidization amount dgpmstp) of particulate matters (PM) per unit time is calculated on the basis of an in-DPF lowest temperature Tdpfmin (step 220). On the basis of a deposition amount of PM at the start of automatic stop and the PM oxidization amount dgpmstp, a PM deposition amount gpm is calculated at different times (step 260). Meanwhile, the PM oxidization amount dgpmstp is integrated (step 230), and when a PM oxidization amount integrated value gpmstp thereof exceeds a maximum oxidization amount GPMSTPMAX that can be oxidized by oxygen existing in a DPF at the automatic start of the diesl engine, the PM oxidization amount dgpmstp used for calculation of the PM deposition amount gpm is restricted so that the PM oxidization amount integrated value gpmstp does not exceed the maximum oxidization amount GPMSTPMAX (steps 240, 250).
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Inventors:
榎本 弘
Application Number:
JP2010200220A
Publication Date:
December 24, 2014
Filing Date:
September 07, 2010
Export Citation:
Assignee:
トヨタ自動車株式会社
International Classes:
F01N3/023; F02D29/02
Attorney, Agent or Firm:
Hironori Onda
Makoto Onda
Makoto Onda