JP7263773B2 - 検出装置、検出方法及び、検出装置を備えた排気浄化装置 - Google Patents
検出装置、検出方法及び、検出装置を備えた排気浄化装置 Download PDFInfo
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- JP7263773B2 JP7263773B2 JP2018248797A JP2018248797A JP7263773B2 JP 7263773 B2 JP7263773 B2 JP 7263773B2 JP 2018248797 A JP2018248797 A JP 2018248797A JP 2018248797 A JP2018248797 A JP 2018248797A JP 7263773 B2 JP7263773 B2 JP 7263773B2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/103—Oxidation catalysts for HC and CO only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/36—Arrangements for supply of additional fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/60—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for the intake of internal combustion engines or turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/14—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1606—Particle filter loading or soot amount
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Description
11 筒内インジェクタ(燃料供給手段)
12 排気マニホールド(排気系流路)
13 排気管(排気系流路)
20 排気管インジェクタ(燃料供給手段)
30 排気後処理装置
30A ケース(排気系流路)
31 酸化触媒
32 フィルタ
90 排気温度センサ
91 差圧センサ(差圧取得手段)
92 エンジン回転数センサ
93 アクセル開度センサ
94 冷却水温センサ(水温取得手段)
100 ECU
110 PM堆積量推定部
120 水発生判定部(水発生判定手段)
130 PM崩落判定部(崩落判定手段)
140 フィルタ再生制御部(フィルタ再生手段)
150 PM過捕集判定部(過捕集判定手段)
160 フィルタ再生禁止部(禁止手段)
Claims (5)
- 内燃機関の排気系流路内に設けられたフィルタに捕集されている粒子状物質の崩落を検出する検出装置であって、
前記フィルタの排気入口側と排気出口側との差圧を取得する差圧取得手段と、
前記排気系流路内に水が発生したか否かを判定する水発生判定手段と、
取得される前記差圧が所定の第1差圧閾値以上又は、前記差圧から推定される前記フィルタの粒子状物質堆積量が所定の第1堆積量閾値以上、且つ、前記水発生判定手段により水が発生したと判定された状態で、所定期間内に取得される前記差圧が所定差圧以上増加又は、前記差圧から推定される前記フィルタの粒子状物質堆積量が所定堆積量以上増加すると、前記フィルタに捕集されている粒子状物質の少なくとも一部が崩落したと判定する崩落判定手段と、
前記内燃機関の冷却水の水温を取得する水温取得手段と、を備え、
前記水発生判定手段は、前記内燃機関の停止時に前記水温取得手段により取得された停止時水温から、前記内燃機関の再始動時に前記水温取得手段により取得される再始動時水温を減算して得られる停止期間中の水温低下量が所定量以上の場合に、前記排気系流路内に水が発生したと判定する
ことを特徴とする検出装置。 - 内燃機関の排気系流路内に設けられたフィルタに捕集されている粒子状物質の崩落を検出する検出方法であって、
前記内燃機関の冷却水の水温を取得し、
前記内燃機関の停止時に取得された停止時水温から前記内燃機関の再始動時に取得された再始動時水温を減算して得られる停止期間中の水温低下量が所定量以上の場合に、前記排気系流路内に水が発生したと判定し、
前記フィルタの排気入口側と排気出口側との差圧を取得すると共に、取得される前記差圧が所定の第1差圧閾値以上又は、前記差圧から推定される前記フィルタの粒子状物質堆積量が所定の第1堆積量閾値以上、且つ、前記排気系流路内に水が発生したと判定した状態で、所定期間内に取得される前記差圧が所定差圧以上増加又は、前記差圧から推定される前記フィルタの粒子状物質堆積量が所定堆積量以上増加すると、前記フィルタに捕集されている粒子状物質の少なくとも一部が崩落したと判定する
ことを特徴とする検出方法。 - 請求項1に記載の検出装置を備える排気浄化装置であって、
前記フィルタと、
前記フィルタよりも排気上流側の前記排気系流路内に設けられた酸化触媒と、
前記酸化触媒に未燃燃料を供給可能な燃料供給手段と、
前記崩落判定手段により粒子状物質が崩落したと判定されると、前記燃料供給手段に前記未燃燃料を供給させて、前記フィルタに堆積した粒子状物質を燃焼除去するフィルタ再生を実施するフィルタ再生手段と、を備える
ことを特徴とする排気浄化装置。 - 前記フィルタ再生手段は、取得される前記差圧が前記第1差圧閾値よりも大きい所定の第2差圧閾値又は、前記差圧から推定される前記フィルタの粒子状物質堆積量が前記第1堆積量閾値よりも大きい所定の第2堆積量閾値に達した場合に、前記粒子状物質堆積量が前記第2堆積量閾値よりも大きい所定の第3堆積量閾値に達していなければ前記フィルタ再生を実施し、前記フィルタの粒子状物質堆積量が前記第3堆積量閾値に達していれば前記フィルタ再生を実施しない
請求項3に記載の排気浄化装置。 - 取得される前記差圧が前記第2差圧閾値よりも大きい所定の第3差圧閾値又は、前記差圧から推定される前記フィルタの粒子状物質堆積量が前記第3堆積量閾値に達すると、前記フィルタに粒子状物質が過大に捕集されている過捕集状態と判定する過捕集判定手段と、
前記過捕集判定手段により過捕集状態と判定されると、前記フィルタ再生手段による前記フィルタ再生の実施を禁止する禁止手段と、をさらに備える
請求項4に記載の排気浄化装置。
Priority Applications (5)
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JP2018248797A JP7263773B2 (ja) | 2018-12-29 | 2018-12-29 | 検出装置、検出方法及び、検出装置を備えた排気浄化装置 |
DE112019006509.2T DE112019006509T5 (de) | 2018-12-29 | 2019-12-25 | Erfassungsvorrichtung, erfassungsverfahren und abgasreinigungsvorrichtung mit erfassungsvorrichtung |
PCT/JP2019/050847 WO2020138180A1 (ja) | 2018-12-29 | 2019-12-25 | 検出装置、検出方法及び、検出装置を備えた排気浄化装置 |
US17/419,630 US11959407B2 (en) | 2018-12-29 | 2019-12-25 | Detection device, detection method, and exhaust purification device with detection device |
CN201980086791.5A CN113226517B (zh) | 2018-12-29 | 2019-12-25 | 检测装置、检测方法以及具备检测装置的排气净化装置 |
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WO2017073799A1 (ja) | 2016-12-14 | 2017-05-04 | 株式会社小松製作所 | 排気ガス浄化システムおよび排気ガス浄化方法 |
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JP4496126B2 (ja) | 2005-05-13 | 2010-07-07 | 本田技研工業株式会社 | 内燃機関の排ガス浄化装置 |
JP2014098363A (ja) * | 2012-11-15 | 2014-05-29 | Toyota Motor Corp | フィルタの異常判定装置 |
JP6136298B2 (ja) * | 2013-01-28 | 2017-05-31 | いすゞ自動車株式会社 | 内燃機関の排気浄化装置 |
JP2017180343A (ja) * | 2016-03-31 | 2017-10-05 | 株式会社Soken | 内燃機関の排気浄化装置 |
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US20220082039A1 (en) | 2022-03-17 |
JP2020109261A (ja) | 2020-07-16 |
WO2020138180A1 (ja) | 2020-07-02 |
CN113226517A (zh) | 2021-08-06 |
DE112019006509T5 (de) | 2021-09-16 |
CN113226517B (zh) | 2022-12-30 |
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