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1. JP2016223442 - 排気浄化システムの制御装置

パーマリンク
官庁
日本
出願番号 2016100561
出願日 19.05.2016
公開番号 2016223442
公開日 28.12.2016
特許番号 6233450
特許付与日 02.11.2017
公報種別 B2
IPC
F01N 3/023
F機械工学;照明;加熱;武器;爆破
01機械または機関一般;機関設備一般;蒸気機関
N機械または機関のためのガス流消音器または排気装置一般;内燃機関用ガス流消音器または排気装置
3排気の清浄,無害化または他の処理をする手段をもつ排気もしくは消音装置
02排気を冷却するためのもの,または排気の固体成分を除去するためのもの
021フィルタを用いるもの
023フィルタの再生手段を有するもの,例.捕集成分を燃焼させるもの
F01N 3/025
F機械工学;照明;加熱;武器;爆破
01機械または機関一般;機関設備一般;蒸気機関
N機械または機関のためのガス流消音器または排気装置一般;内燃機関用ガス流消音器または排気装置
3排気の清浄,無害化または他の処理をする手段をもつ排気もしくは消音装置
02排気を冷却するためのもの,または排気の固体成分を除去するためのもの
021フィルタを用いるもの
023フィルタの再生手段を有するもの,例.捕集成分を燃焼させるもの
025バーナを用いるもの,または排気に燃料を添加するもの
CPC
F01N 3/023
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
023using means for regenerating the filters, e.g. by burning trapped particles
F01N 9/002
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
9Electrical control of exhaust gas treating apparatus
002of filter regeneration, e.g. detection of clogging
F01N 2560/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
2560Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
08the means being a pressure sensor
F01N 2900/1406
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
2900Details of electrical control or of the monitoring of the exhaust gas treating apparatus
06Parameters used for exhaust control or diagnosing
14said parameters being related to the exhaust gas
1406Exhaust gas pressure
F01N 2900/1606
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
2900Details of electrical control or of the monitoring of the exhaust gas treating apparatus
06Parameters used for exhaust control or diagnosing
16said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
1606Particle filter loading or soot amount
Y02T 10/40
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
10Internal combustion engine [ICE] based vehicles
40Engine management systems
出願人 TOYOTA MOTOR CORP
トヨタ自動車株式会社
発明者 KOBASHI NORIYASU
小橋　紀靖
KADOOKA TAKU
角岡　卓
OTSUKA TAKAYUKI
大塚　孝之
HASHIMOTO HIROSHIGE
橋本　浩成
代理人 川口　嘉之
世良　和信
平川　明
関根　武彦
今堀　克彦
宮下　文徳
小久保　篤史
優先権情報 2015112598 02.06.2015 JP
発明の名称
(EN) CONTROL DEVICE OF EXHAUST EMISSION CONTROL SYSTEM
(JA) 排気浄化システムの制御装置
要約
(EN)

PROBLEM TO BE SOLVED: To suppress that filter regeneration processing is performed in a state that a possibility causing an excessive rise of a temperature of a particulate filter is high when a PM accumulation amount which is obtained by an ECU and an actual PM accumulation amount deviate from each other resulting from the replacement or the like of the ECU and the particulate filter.

SOLUTION: In this control device of an exhaust emission control system, when a difference between an estimated PM accumulation amount which is estimated from an operation history of an internal combustion engine, and a PM accumulation amount which is calculated from a measurement value of a differential pressure sensor is not smaller than a prescribed threshold, the control device assumes that the measurement value of the differential pressure sensor is a value in a state that only PMs are accumulated in a particulate filter PM, when the measurement value is not larger than an upper limit value, the control device performs first regeneration processing for oxidizing and removing the PMs accumulated in the particulate filter, and when the measurement value is larger than the prescribed upper limit value, the control device performs second regeneration processing without performing the first regeneration processing.

SELECTED DRAWING: Figure 6

COPYRIGHT: (C)2017,JPO&INPIT


(JA)

【課題】本発明は、ＥＣＵやパティキュレートフィルタの交換等に起因して、ＥＣＵによって求められるＰＭ堆積量と実際のＰＭ堆積量とが乖離した場合に、パティキュレートフィルタの過昇温を招く可能性がある状態でフィルタ再生処理が実行されることを抑制することを課題とする。
【解決手段】本発明は、内燃機関の運転履歴から推定される推定ＰＭ堆積量と差圧センサの測定値から演算されるＰＭ堆積量との差が所定の閾値以上である場合に、前記差圧センサの測定値がパティキュレートフィルタにＰＭのみが堆積している状態の値であると仮定し、その測定値が所定の上限値以下であれば、前記パティキュレートフィルタに堆積しているＰＭを酸化及び除去する処理である第一再生処理を実行し、且つ前記測定値が前記所定の上限値より大きければ、前記第一再生処理を実行せずに第二再生処理を実行するようにした。
【選択図】図６
関連特許文献
KR1020170137858
CN107532491
US20180149102
WO/2016/194984
DE112016002484
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