FR2993004A1 - Procede et dispositif de nettoyage des gaz d'echappement d'un moteur thermique - Google Patents
Procede et dispositif de nettoyage des gaz d'echappement d'un moteur thermique Download PDFInfo
- Publication number
- FR2993004A1 FR2993004A1 FR1356607A FR1356607A FR2993004A1 FR 2993004 A1 FR2993004 A1 FR 2993004A1 FR 1356607 A FR1356607 A FR 1356607A FR 1356607 A FR1356607 A FR 1356607A FR 2993004 A1 FR2993004 A1 FR 2993004A1
- Authority
- FR
- France
- Prior art keywords
- exhaust gas
- cleaning
- heat engine
- hydrocarbon
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F01N3/18—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
-
- 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
- F01N3/18—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
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9495—Controlling the catalytic process
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
-
- 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
- F01N3/28—Construction of catalytic reactors
-
- 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
-
- 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
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/023—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting HC
-
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine 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
- 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
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1402—Exhaust gas composition
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Procédé de nettoyage des gaz d'échappement d'un moteur thermique (10) en transformant les oxydes d'azote des gaz d'échappement par le dosage impulsionnel d'hydrocarbures dans le canal des gaz d'échappement (13) en amont du catalyseur des oxydes d'azote (16). On détermine la concentration en hydrocarbures des gaz d'échappement à l'aide d'un capteur (17) dans la veine des gaz d'échappement en aval du catalyseur (16), et on influence la quantité dosée d'hydrocarbures à l'aide de la concentration en hydrocarbures par le capteur d'hydrocarbures (17) ayant traversé le catalyseur d'oxydes d'azote (16) de façon à éviter juste le passage d'hydrocarbures à travers le catalyseur d'oxydes d'azote (16).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012211684.2A DE102012211684A1 (de) | 2012-07-05 | 2012-07-05 | Verfahren und Vorrichtung zur Reinigung des Abgases einer Brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2993004A1 true FR2993004A1 (fr) | 2014-01-10 |
FR2993004B1 FR2993004B1 (fr) | 2017-05-12 |
Family
ID=49769995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1356607A Active FR2993004B1 (fr) | 2012-07-05 | 2013-07-05 | Procede et dispositif de nettoyage des gaz d'echappement d'un moteur thermique |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140010746A1 (fr) |
JP (1) | JP6254373B2 (fr) |
KR (1) | KR20140005791A (fr) |
DE (1) | DE102012211684A1 (fr) |
FR (1) | FR2993004B1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6087799B2 (ja) * | 2013-12-04 | 2017-03-01 | 本田技研工業株式会社 | 内燃機関の排気浄化システム |
DE102015201177B4 (de) * | 2014-01-23 | 2016-01-28 | Honda Motor Co., Ltd. | Abgasreinigungssystem für einen Verbrennungsmotor |
JP6593306B2 (ja) * | 2016-11-09 | 2019-10-23 | 株式会社デンソー | 排気浄化システムの制御装置 |
US11806421B2 (en) | 2018-06-29 | 2023-11-07 | Jgc Catalysts And Chemicals Ltd. | Porous-cellulose particles and production method thereof, and cosmetic |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10226635A1 (de) * | 2001-08-09 | 2003-02-27 | Ford Global Tech Inc | Umwandlung von Stickoxiden in Abgasnachbehandlungseinrichtungen bei niedriger Temperatur |
DE602004001272T2 (de) * | 2003-04-25 | 2007-05-03 | Toyota Jidosha Kabushiki Kaisha, Toyota | Abgasreinigungssystem und Verfahren zur Entfernung von Stickoxiden eines Verbrennungsmotors |
DE102007044193A1 (de) * | 2006-09-20 | 2008-04-10 | GM Global Technology Operations, Inc., Detroit | Verfahren und Vorrichtung zum Steuern der Einspritzung eines Reduktionsmittels in einen Abgasstrom |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005049770B4 (de) | 2005-10-18 | 2020-02-06 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens |
JP4650364B2 (ja) * | 2006-07-18 | 2011-03-16 | トヨタ自動車株式会社 | NOx触媒の劣化検出装置 |
JP4453685B2 (ja) * | 2006-07-21 | 2010-04-21 | トヨタ自動車株式会社 | 内燃機関の排気浄化システム |
KR101158816B1 (ko) * | 2009-08-21 | 2012-06-26 | 기아자동차주식회사 | 디젤 차량의 배기 장치 |
JP2011122552A (ja) * | 2009-12-14 | 2011-06-23 | Suzuki Motor Corp | 内燃機関の排出ガス浄化装置 |
CN102378854B (zh) | 2010-03-15 | 2014-06-18 | 丰田自动车株式会社 | 内燃机的排气净化装置 |
ES2534759T3 (es) | 2010-03-15 | 2015-04-28 | Toyota Jidosha Kabushiki Kaisha | Sistema de purificación de gases de escape de motor de combustión interna |
-
2012
- 2012-07-05 DE DE102012211684.2A patent/DE102012211684A1/de not_active Ceased
-
2013
- 2013-07-02 JP JP2013138537A patent/JP6254373B2/ja active Active
- 2013-07-04 KR KR1020130078155A patent/KR20140005791A/ko not_active Application Discontinuation
- 2013-07-05 FR FR1356607A patent/FR2993004B1/fr active Active
- 2013-07-05 US US13/935,787 patent/US20140010746A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10226635A1 (de) * | 2001-08-09 | 2003-02-27 | Ford Global Tech Inc | Umwandlung von Stickoxiden in Abgasnachbehandlungseinrichtungen bei niedriger Temperatur |
DE602004001272T2 (de) * | 2003-04-25 | 2007-05-03 | Toyota Jidosha Kabushiki Kaisha, Toyota | Abgasreinigungssystem und Verfahren zur Entfernung von Stickoxiden eines Verbrennungsmotors |
DE102007044193A1 (de) * | 2006-09-20 | 2008-04-10 | GM Global Technology Operations, Inc., Detroit | Verfahren und Vorrichtung zum Steuern der Einspritzung eines Reduktionsmittels in einen Abgasstrom |
Also Published As
Publication number | Publication date |
---|---|
FR2993004B1 (fr) | 2017-05-12 |
JP6254373B2 (ja) | 2017-12-27 |
JP2014015931A (ja) | 2014-01-30 |
KR20140005791A (ko) | 2014-01-15 |
US20140010746A1 (en) | 2014-01-09 |
DE102012211684A1 (de) | 2014-01-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2993004A1 (fr) | Procede et dispositif de nettoyage des gaz d'echappement d'un moteur thermique | |
FR3002783B1 (fr) | Procede et dispositif de surveillance d'un catalyseur accumulateur d'oxydes d'azote | |
IN2014CN00718A (fr) | ||
IN2012DN02822A (fr) | ||
WO2013036406A3 (fr) | Modificateur de débit d'échappement de pré-injection | |
FR3010445B1 (fr) | Systeme de retraitement des gaz d'echappement d'un moteur a combustion interne et procede de retraitement | |
ATE545776T1 (de) | Abgasreinigungsvorrichtung für einen verbrennungsmotor | |
EP2915969A4 (fr) | Dispositif d'épuration des gaz d'échappement et procédé d'épuration des gaz d'échappement pour un moteur à combustion interne | |
ATE546732T1 (de) | VERFAHREN ZUR ERMITTLUNG DER RUßOXIDATIONSRATE VON IN EINEM PARTIKELFILTER ZURÜCKHALTENEM RUß | |
MX2018003059A (es) | Sistema y metodo para mejorar el funcionamiento de motores de combustion que emplean combustibles primarios y secundarios. | |
FR2957116B1 (fr) | Procede de gestion d'un catalyseur scr | |
IN2014CH00854A (fr) | ||
EP2444609A4 (fr) | Procédé et dispositif de traitement des gaz d'échappement pour moteur à combustion interne | |
BR112012025151A2 (pt) | aparelho de purificação de escape para motor | |
ATE557179T1 (de) | Abgasentgiftungsvorrichtung für einen verbrennungsmotor | |
FR2978493B1 (fr) | Procede et dispositif de mesure de la concentration de suies dans un gaz d'echappement, notamment d'un moteur a combustion interne | |
ATE509194T1 (de) | Verfahren und steuergerät zur steuerung der reduktionsmittelzufuhr zu einem scr-katalysator | |
FR3015558B1 (fr) | Detection et quantification des fuites d'ammoniac en aval d'un systeme de reduction catalytique selective d'oxydes d'azote | |
ATE557172T1 (de) | Abgasreinigungsvorrichtung für einen verbrennungsmotor | |
EP2952729A4 (fr) | Dispositif de contrôle de recirculation des gaz d'échappement et procédé de contrôle de recirculation de gaz d'échappement pour un moteur à combustion interne | |
EP3896265A4 (fr) | Dispositif et procédé de post-traitement des gaz d'échappement de moteur | |
FR2971545B1 (fr) | Dispositif et procede de dosage d'un liquide dans la conduite des gaz d'echappement d'un moteur a combustion interne | |
FR2968714B1 (fr) | Procede et dispositif de controle de la temperature des gaz d'echappement d'un moteur a combustion interne traversant un moyen de traitement des polluants contenus dans ces gaz | |
EP2642096A4 (fr) | Dispositif d'épuration des gaz d'échappement d'un moteur à combustion interne | |
GB201205223D0 (en) | Method and apparatus for injecting oxygen within an engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PLFP | Fee payment |
Year of fee payment: 3 |
|
PLSC | Publication of the preliminary search report |
Effective date: 20160311 |
|
PLFP | Fee payment |
Year of fee payment: 4 |
|
PLFP | Fee payment |
Year of fee payment: 5 |
|
PLFP | Fee payment |
Year of fee payment: 6 |
|
PLFP | Fee payment |
Year of fee payment: 7 |
|
PLFP | Fee payment |
Year of fee payment: 8 |
|
PLFP | Fee payment |
Year of fee payment: 9 |
|
PLFP | Fee payment |
Year of fee payment: 10 |
|
PLFP | Fee payment |
Year of fee payment: 11 |