JP2020514605A - 改良された選択的触媒還元システム - Google Patents
改良された選択的触媒還元システム Download PDFInfo
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- 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0093—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are of the same type
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- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
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- 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
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- F01N9/00—Electrical control of exhaust gas treating apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/40—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a hydrolysis catalyst
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- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
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- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
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- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
- F01N2610/146—Control thereof, e.g. control of injectors or injection valves
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- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
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- F01N2900/0408—Methods of control or diagnosing using a feed-back loop
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- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
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- F01N2900/1621—Catalyst conversion efficiency
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- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
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- F01N2900/1622—Catalyst reducing agent absorption capacity or consumption amount
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
- F01N3/033—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 in combination with other devices
- F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- 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
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- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- 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
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- Y02T10/12—Improving ICE efficiencies
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- 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
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- Y02T10/40—Engine management systems
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Abstract
Description
Claims (11)
- 排出ガス通路内で選択的触媒還元システムを使用して排出ガスを処理する方法であって,前記システムが,SCR触媒の上流側通路内における加水分解触媒と,ディーゼル排出流体(DEF)を可変のDEF投与率で加水分解触媒に噴射するためのDEF投与ユニットを備え,前記方法が:
・排出ガスに含まれる全ての窒素酸化物(NOx)を変換するための初期DEF投与率を予測するステップ;
・前記SCR触媒に貯蔵されるアンモニアの量を推定するステップ;
前記システムのためのNOx変換率を測定するステップ;
・初期DEF投与率を前記アンモニア貯蔵量の推定値及びNOx変換率の測定値に基づいて調整することにより,第1の調整されたDEF投与率を生成するステップ;
・前記加水分解触媒に貯蔵されているアンモニア等価体の量を推定するステップ;
・前記第1の調整されたDEF投与率をアンモニアアンモニア等価体の貯蔵量推定値に基づいて調整することにより,第2の調整されたDEF投与率を生成するステップ;並びに
・該第2の調整されたDEF投与率によりDEFを噴射するステップ;
を備える方法。 - 請求項1に記載の方法であって,排出ガス中のNOxを検出するに先立って,DEFを前記加水分解触媒に噴射する初期ステップを更に備える方法。
- 請求項2に記載の方法であって,前記NOx変換率が増加する際に,前記第2の調整されたDEF投与率を増加するステップを更に備える方法。
- 請求項2又は3に記載の方法であって,前記NOx変換率が減少する際に,前記第2の調整されたDEF投与率を減少するステップを更に備える方法。
- 請求項1〜4の何れか一項に記載の方法であって,前記システムの入口において排出ガス温度の増加を検出したときに,前記第2の調整されたDEF投与率を増加するステップを更に備える方法。
- 請求項5に記載の方法であって,
・アンモニア・スリップを生じさせ得る搬出ガス温度の増加時間を計算するステップ;
・前記排出ガス温度の増加時間を計測するステップ,並びに
・排出ガス温度の増加が,前記計算された時間に亘って維持され,又はこれを超える場合に,前記第2の調整されたDEF投与率を徐々に減少させるステップ;
を更に備える,方法。 - 排出ガスを排出通路内において処理するための選択的触媒還元(SCR)システムであって:
・前記排出通路内における加水分解触媒;
・ディーゼル排出流体(DEF)を前記加水分解触媒に噴射するためのDEF投与ユニット;
・前記加水分解触媒の下流側で前記通路内に配置されたSCR触媒;
・それぞれ前記加水分解触媒の上流側で前記通路内に配置された入口温度センサ及び第1の窒素酸化物(NOx)センサ;
・前記SCR触媒の下流側に配置された第2のNOxセンサ;
・前記入口温度センサ,前記第1のNOxセンサ,前記第2のNOxセンサ及び前記DEF投与ユニットに接続された制御モジュール;並びに
・前記制御モジュールにより読み取られるアンモニア‐NOx比(ANR)マップ;
を備え,前記制御モジュールにより前記DEF投与ユニットを,前記センサから受信した信号及び前記ANRマップから取得されたANR情報に基づいて制御する,SCRシステム。 - 請求項7に記載のSCRシステムであって,前記SCRセンサの上流側に配置され,かつ,前記制御モジュールに接続されている出口アンモニアセンサ及び/又は出口温度センサを更に備える,SCRシステム。
- 請求項7又は8に記載のSCRシステムであって,加水分解触媒温度センサ及び/又は加水分解触媒アンモニアセンサを更に備え,該センサが,前記加水分解触媒及びSCRセンサの間に配置され,かつ,前記制御モジュールに接続されている,SCRシステム。
- 車両用の排出ガス装置であって,請求項7〜9のいずれか一項に記載のSCRシステムを含む排出ガス装置。
- 請求項7〜9のいずれか一項に記載のSCRシステムを含む車両。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16205947.1 | 2016-12-21 | ||
EP16205947.1A EP3339588B1 (en) | 2016-12-21 | 2016-12-21 | An improved selective catalytic reduction system |
PCT/EP2017/082173 WO2018114419A1 (en) | 2016-12-21 | 2017-12-11 | An improved selective catalytic reduction system |
Publications (2)
Publication Number | Publication Date |
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JP2020514605A true JP2020514605A (ja) | 2020-05-21 |
JP7058269B2 JP7058269B2 (ja) | 2022-04-21 |
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Application Number | Title | Priority Date | Filing Date |
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JP2019530776A Active JP7058269B2 (ja) | 2016-12-21 | 2017-12-11 | 改良された選択的触媒還元システム |
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Country | Link |
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US (1) | US11105236B2 (ja) |
EP (1) | EP3339588B1 (ja) |
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EP3339589B1 (en) * | 2016-12-21 | 2020-10-07 | Perkins Engines Company Limited | Method and apparatus for a scr |
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CN112483225B (zh) * | 2020-11-02 | 2022-04-05 | 潍柴动力股份有限公司 | 一种降低scr氨消耗量的方法及设备 |
EP4008886B1 (en) * | 2020-12-02 | 2024-01-31 | Volvo Truck Corporation | A urea injection control system for an internal combustion engine |
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CN110073086B (zh) | 2021-05-28 |
EP3339588B1 (en) | 2021-03-03 |
WO2018114419A1 (en) | 2018-06-28 |
EP3339588A1 (en) | 2018-06-27 |
US11105236B2 (en) | 2021-08-31 |
CN110073086A (zh) | 2019-07-30 |
US20190316503A1 (en) | 2019-10-17 |
JP7058269B2 (ja) | 2022-04-21 |
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