EP1120551A2 - Verfahren und Anordnung zur Arretierung eines Katalysatorträgers in einem Abgaskanal einer Verbrennungskraftmaschine - Google Patents
Verfahren und Anordnung zur Arretierung eines Katalysatorträgers in einem Abgaskanal einer Verbrennungskraftmaschine Download PDFInfo
- Publication number
- EP1120551A2 EP1120551A2 EP01101528A EP01101528A EP1120551A2 EP 1120551 A2 EP1120551 A2 EP 1120551A2 EP 01101528 A EP01101528 A EP 01101528A EP 01101528 A EP01101528 A EP 01101528A EP 1120551 A2 EP1120551 A2 EP 1120551A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- catalyst
- mat
- exhaust gas
- catalyst carrier
- housing
- 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
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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
- F01N3/24—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
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
- F01N3/2857—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing the mats or gaskets being at least partially made of intumescent material, e.g. unexpanded vermiculite
Definitions
- the invention relates to a method and an arrangement for locking a Catalyst carrier in an exhaust duct of an internal combustion engine, one Thermal swell mat between the catalyst carrier and a catalyst housing is expanded.
- Arrange catalysts in an exhaust duct For cleaning an exhaust gas of an internal combustion engine, it is known Arrange catalysts in an exhaust duct. These enable the Implementation of gaseous pollutants in the exhaust gas such as carbon monoxide, nitrogen oxides and unburned hydrocarbons in less environmentally relevant products.
- a catalyst usually comprises a ceramic monolith as Catalyst carrier, which forms a plurality of flow channels and its Surface is coated with a catalytically active substance. It is further known a position of the catalyst carrier in a catalyst housing to lock so-called swelling mats, the catalyst carrier in its Longitudinal extension is enveloped by the swelling mat.
- the swelling mat is there usually made of aluminum silicate fibers with a mica additive.
- the volume of the swelling mat set after an initial heating process is permanent and remains even when it cools down.
- the volume expansion occurs at the first Commissioning of the vehicle.
- vehicles whose exhaust gas on the The location of the catalytic converter is not the temperature required for the expansion of the mat has, it can happen that the swelling mat is not or insufficient expands and the catalytic converter does not find sufficient support in the catalytic converter housing, loosens and shifts and is thereby destroyed.
- Such low Exhaust gas temperatures are particularly high for diesel and direct-injection gasoline engines observe.
- the object of the present invention is to provide a reliable locking method to provide a generic catalyst that is inexpensive and fast is feasible and leads to results with minimal process changes.
- the application of the invention for the thermal expansion of the mat Thermal energy through electrical current which is both direct and indirect, for example by induction, has proven to be particularly advantageous proven.
- the thermal energy to be applied can be applied by electrical current supply targeted in an electrically conductive material, which is characterized by the metallic Catalyst housing is given, generate. It can be used for the expansion of the Selective heat to be applied to the source mat in the immediate vicinity of the destination to be generated.
- the current is supplied indirectly, especially inductive.
- This can be particularly advantageous in an induction furnace achieve which has an eddy current flow and thus an air gap Heat generation induced in the catalyst jacket.
- Advantages of using an induction furnace are that they are not permanent, like conventional ovens, but operated in a demand-oriented and therefore cost-saving manner can be. Furthermore, this configuration comes without any modification of the Catalyst or the catalyst housing.
- the required Thermal energy through direct electrical energization of at least one partial area of the catalyst housing generated.
- An additional advantage of this variant is that the machine effort is reduced even further.
- the Arrangement according to the invention that the catalyst housing with a Voltage source for loading at least a partial area of the Catalyst housing can be connected to a heating current.
- you can for example on the catalyst housing connection points for conventional Electrode clamps may be provided.
- a strength of a heating current is advantageously chosen such that a Temperature of the swelling mat of at least 300 ° C., in particular 350 ° C. or more, is produced.
- FIG. 1 schematically shows a catalyst arrangement and a Equivalent circuit diagram of a circuit connected for direct current supply.
- the Catalyst 10 consists of a ceramic monolith, not shown here as a catalyst support 12 and a catalytically active one fixed on its surface Substance.
- the catalyst carrier 12 is in an extension of a Catalyst housing 14 and is of a swelling mat 16 in its longitudinal extent surround. Before it is installed in an exhaust tract of an internal combustion engine, the The catalyst carrier 12 is packed with the swelling mat 16 and into the catalyst housing 14 introduced. In order to trigger an expansion of the source mat 16, the Catalytic converter housing 14 heated by direct current application. To this end becomes a circuit 20 at two connection points 18 of the catalyst housing 14 connected.
- the circuit 20 includes a switch 24, the closure of which a current flow of a heating current I initialized. According to the electrophysical laws, it depends from the square of the current I to a heating of the catalyst housing 14. Da the heat is generated in the immediate vicinity of the source mat 16, this becomes very quickly to a temperature necessary for the expansion of preferably brought at least 350 ° C.
- the illustration also clarifies that the implementation of the method according to the invention with an extremely low technical outlay is feasible. So the circuit 20 can be inexpensively Build standard electrical components. If necessary, even on the connection points 18 are omitted and the circuit 20 to other suitable locations of the Catalyst jacket 14 are connected. For example, come here Usually existing flange connections 26 of the catalyst jacket 14 in question.
- FIG 2 shows a schematic representation of the principle of indirect inductive Heating a catalyst 10 by an induction furnace.
- the same elements are identical to the reference numerals used in Figure 1.
- the catalyst 10 is of the coils 28 arranged in coils of a not shown here Induction furnace surrounded.
- a circuit 20 By connecting to an AC voltage source 22 a circuit 20 closed so that the turns 28 of a current I be flowed through.
- eddy currents are generated in the catalyst housing 14, which cause heating of the catalyst housing 14.
- the temperature of the catalytic converter housing can be about the size of the applied voltage can be varied.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Catalysts (AREA)
Abstract
Description
- Figur 1
- das Prinzip einer direkten Bestromung eines Katalysators und
- Figur 2
- das Prinzip einer induktiven Bestromung des Katalysators durch einen Induktionsofen.
Claims (8)
- Verfahren zur Arretierung eines Katalysatorträgers in einem Abgaskanal einer Verbrennungskraftmaschine, wobei eine Quellmatte thermisch zwischen dem Katalysatorträger und einem Katalysatorgehäuse expandiert wird, dadurch gekennzeichnet, daß eine für die thermische Expansion der Quellmatte (16) aufzubringende Wärmeenergie durch elektrische Bestromung erzeugt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Bestromung indirekt, insbesondere induktiv, erfolgt.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die induktive Bestromung durch einen Induktionsofen erfolgt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Wärmeenergie durch direkte elektrische Bestromung wenigstens eines Teilbereiches des Katalysatorgehäuses (14) aufgebracht wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die elektrische Bestromung des Katalysatorgehäuses (14) vor einer Montage in den Abgaskanal erfolgt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Temperatur der Quellmatte (16) von mindestens 300 °C, insbesondere 350 °C, erzeugt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Katalysator (10) sich in einem Abgaskanal eines direkteinspritzenden Ottomotors oder eines Dieselmotors befindet.
- Anordnung zur Arretierung eines in einem Abgaskanal einer Verbrennungskraftmaschine angeordneten Katalysatorträgers, der eine zwischen dem Katalysatorträger und einem Katalysatorgehäuse angeordnete, thermisch ausdehnbare Quellmatte umfaßt, dadurch gekennzeichnet, daß das Katalysatorgehäuse (14) mit einer Spannungsquelle (22) zum Beaufschlagen wenigstens eines Teilbereichs des Katalysatorgehäuses (14) mit einem Heizstrom verbindbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10003904 | 2000-01-29 | ||
DE10003904A DE10003904A1 (de) | 2000-01-29 | 2000-01-29 | Verfahren und Anordnung zur Arretierung eines Katalysatorträgers in einem Abgaskanal einer Verbrennungskraftmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1120551A2 true EP1120551A2 (de) | 2001-08-01 |
EP1120551A3 EP1120551A3 (de) | 2004-01-14 |
EP1120551B1 EP1120551B1 (de) | 2007-03-21 |
Family
ID=7629172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01101528A Expired - Lifetime EP1120551B1 (de) | 2000-01-29 | 2001-01-24 | Verfahren und Anordnung zur Arretierung eines Katalysatorträgers in einem Abgaskanal einer Verbrennungskraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1120551B1 (de) |
AT (1) | ATE357584T1 (de) |
DE (2) | DE10003904A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107387213A (zh) * | 2017-08-08 | 2017-11-24 | 浙江锋锐发动机有限公司 | 排气处理装置催化剂预热系统 |
CN108180061A (zh) * | 2017-12-27 | 2018-06-19 | 广西玉柴机器股份有限公司 | 催化器电加热装置 |
US10815851B1 (en) | 2019-07-17 | 2020-10-27 | Faurecia Systemes D'echappement | Device for purifying the exhaust gases of a vehicle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10250345A1 (de) * | 2002-10-29 | 2004-05-13 | Volkswagen Ag | Brennstoffzellenanordnung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0429246A1 (de) * | 1989-11-15 | 1991-05-29 | W.R. Grace & Co.-Conn. | Mit Niedertemperatur expandierbarer Vermiculit und diesen enthaltendes blähendes bahnförmiges Material |
WO1993007366A1 (de) * | 1991-10-04 | 1993-04-15 | Leistritz Ag & Co Abgastechnik | Vorrichtung zur reduzierung von abgas-schadstoffen, insbesondere für kraftfahrzeuge |
US5569455A (en) * | 1992-06-10 | 1996-10-29 | Shimadzu Corporation | Exhaust gas catalytic purifier construction |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69833136T2 (de) * | 1997-02-06 | 2006-08-31 | Minnesota Mining And Mfg. Co., St. Paul | Mehrschichtige Blähmatte |
-
2000
- 2000-01-29 DE DE10003904A patent/DE10003904A1/de not_active Ceased
-
2001
- 2001-01-24 AT AT01101528T patent/ATE357584T1/de not_active IP Right Cessation
- 2001-01-24 EP EP01101528A patent/EP1120551B1/de not_active Expired - Lifetime
- 2001-01-24 DE DE50112211T patent/DE50112211D1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0429246A1 (de) * | 1989-11-15 | 1991-05-29 | W.R. Grace & Co.-Conn. | Mit Niedertemperatur expandierbarer Vermiculit und diesen enthaltendes blähendes bahnförmiges Material |
WO1993007366A1 (de) * | 1991-10-04 | 1993-04-15 | Leistritz Ag & Co Abgastechnik | Vorrichtung zur reduzierung von abgas-schadstoffen, insbesondere für kraftfahrzeuge |
US5569455A (en) * | 1992-06-10 | 1996-10-29 | Shimadzu Corporation | Exhaust gas catalytic purifier construction |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107387213A (zh) * | 2017-08-08 | 2017-11-24 | 浙江锋锐发动机有限公司 | 排气处理装置催化剂预热系统 |
CN108180061A (zh) * | 2017-12-27 | 2018-06-19 | 广西玉柴机器股份有限公司 | 催化器电加热装置 |
US10815851B1 (en) | 2019-07-17 | 2020-10-27 | Faurecia Systemes D'echappement | Device for purifying the exhaust gases of a vehicle |
FR3098856A1 (fr) * | 2019-07-17 | 2021-01-22 | Faurecia Systemes D'echappement | Dispositif de purification des gaz d’échappement d’un véhicule |
Also Published As
Publication number | Publication date |
---|---|
ATE357584T1 (de) | 2007-04-15 |
DE10003904A1 (de) | 2001-08-02 |
EP1120551B1 (de) | 2007-03-21 |
DE50112211D1 (de) | 2007-05-03 |
EP1120551A3 (de) | 2004-01-14 |
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