EP1106811A2 - Vorrichtung zur Abgasrückführung an einer Brennkraftmaschine - Google Patents
Vorrichtung zur Abgasrückführung an einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP1106811A2 EP1106811A2 EP00125205A EP00125205A EP1106811A2 EP 1106811 A2 EP1106811 A2 EP 1106811A2 EP 00125205 A EP00125205 A EP 00125205A EP 00125205 A EP00125205 A EP 00125205A EP 1106811 A2 EP1106811 A2 EP 1106811A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- valve
- exhaust gas
- gas recirculation
- secondary air
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/72—Housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
Definitions
- the invention relates to a device for exhaust gas recirculation on an internal combustion engine, with an exhaust gas recirculation valve, which is used to recirculate exhaust gas on the inlet side with an exhaust pipe of the internal combustion engine and on the output side with a Intake line of the internal combustion engine connected and for ventilation on the input side Air can be supplied, and with a secondary air valve, which is an air supply system is assigned, according to the preamble of claim 1.
- the secondary air valve is the one assigned to it Air supply system charged with clean air cleaned from the air filter.
- the object of the invention is a device for exhaust gas recirculation on a Propose internal combustion engine of the generic type by a reduced construction and assembly work is marked.
- Air supply system forming installation elements it is also possible to limit the number of Air supply system forming installation elements to a minimum, since that Air supply system from a one-piece, having a corresponding branch Air supply line and an air pump operatively connected to this. Since the secondary air valve turns approximately 80 after starting the internal combustion engine Seconds in the active operating position to supply secondary air to the Exhaust pipe of the internal combustion engine to in the exhaust system of the same during a cold start initiate post-combustion, and desired exhaust gas recirculation only four Minutes after the engine starts, the air is supplied through the common air supply system with respect to the secondary air valve and the Exhaust gas recirculation valve in separate time periods.
- the air supply system advantageously leads to the supply of clean air from one Air filter to the secondary air valve.
- the supply of clean air ensures that that no unwanted contaminants inside the pump of the Secondary air valve and the exhaust gas recirculation valve. It becomes negative Impairment of the operating behavior of the pump, the secondary air valve and the Exhaust gas recirculation valve due to airborne contaminants avoided.
- the exhaust gas recirculation valve is by means of an air supply line from the Air supply system branching ventilation line can be ventilated with the clean air.
- the exhaust gas recirculation valve By a from the common air supply line branching ventilation line to Exhaust gas recirculation valve, it is possible to use the exhaust gas recirculation valve in a corresponding Distance from the secondary air valve to be arranged without reducing the advantageous Construction and assembly costs for the device for exhaust gas recirculation are eliminated have to. In this way, an optimal arrangement of the exhaust gas recirculation valve take place regardless of the already existing or intended Arrangement of the secondary air valve and using a common Air supply line.
- a secondary air pump connected to the air supply line in such a way that the clean air can be sucked in by the air filter and under pressure the secondary air valve is feedable. This ensures that using a common Air supply line for both valves a correct supply of clean air to the Secondary air valve takes place.
- the ventilation line between the secondary air pump and the is advantageous Secondary air valve connected to the air supply line.
- the exhaust gas recirculation valve Leading ventilation line should - as seen in the air supply direction - as late as possible branch off from the common air supply line of the air supply system so that the common line section of the air supply line as long as possible having.
- a branch of the, spaced from the secondary air pump Air supply line is therefore one located directly at the secondary air pump outlet Branch preferred.
- the ventilation line immediately before the mouth of the Air supply line in the secondary air valve connected to the air supply line. Because of This measure becomes almost the entire air supply line for the supply of clean air used for the secondary air valve and the exhaust gas recirculation valve. This will in particularly effective way of the material and assembly effort as well as the necessary Installation space reduced to a minimum.
- the exhaust gas recirculation valve and the Secondary air valve formed together as a combined valve assembly.
- a combined Valve assembly Through the Training of the exhaust gas recirculation valve and the secondary air valve as a combined Valve assembly is an exhaust gas recirculation and in a particularly compact manner Secondary air supply possible with shared clean air supply.
- an assembly-friendly valve assembly pre-assembly in an advantageous manner be provided.
- the air supply system preferably leads from the air filter to the valve assembly.
- the Air supply system thus consists of a simple, branchless Air supply line and an air pump operatively connected to this.
- a Branch of the clean air supply to the secondary air valve and the exhaust gas recirculation valve takes place in a suitable manner within the valve assembly. This can be constructive particularly simple air supply system universal for different trained valve assemblies are used.
- the valve assembly advantageously has an inlet side with the air supply line connected to the exhaust gas recirculation valve and the secondary air valve Channel on.
- the exhaust gas recirculation valve, the secondary air valve and Secondary air pump can be controlled separately by means of a control device.
- a separate control of the exhaust gas recirculation valve, the secondary air valve and the Secondary air pump ensures that depending on the present Operating phase of the internal combustion engine a correct clean air exposure of the Secondary air valve and the exhaust gas recirculation valve takes place.
- an exhaust gas recirculation valve 11 and a secondary air valve 12 are connected to the internal combustion engine 10 .
- Exhaust gas recirculation valve 11 and the secondary air valve 12 are known per se and can be of conventional design.
- the exhaust gas recirculation valve 11, which is used to recirculate exhaust gas serves in the internal combustion engine 10 is on the input side with an exhaust pipe (not shown) of the internal combustion engine 10 and on the output side with an intake line (not shown) of the engine 10 connected such that a return of exhaust gas conducted from internal combustion engine 10 into an exhaust system is possible.
- the secondary air valve 12 is used in the exhaust system of the internal combustion engine 10 initiate afterburning after a cold start. By means of such a Afterburning is particularly the starting behavior of a downstream Improved catalyst. For this purpose, through the secondary air valve 12 a certain period of air in corresponding exhaust gas channels of the internal combustion engine 10 blown in. For secondary air injection through the secondary air valve 12 is by means of an air supply system 13 air from an air filter 14 to the secondary air valve 12 promoted. The air filtered by the air filter 14 is clean air.
- the air supply system 13 consists of an air supply line 15 which extends from the Air filter 14 extends to the secondary air valve 12.
- a secondary air pump 16 is provided which is operatively connected to the air supply line 15 in Active connection is established.
- the exhaust gas recirculation valve 11 is also used for ventilation acted upon with air on the inlet side, with filtered air or for ventilation Clean air must be provided.
- the exhaust gas recirculation valve 11 is advantageously for ventilation input side through a ventilation line 17 with the air supply line 15 of the Air supply system 13 of the secondary air valve 12 connected.
- the exemplary embodiment is the ventilation line 17 of the exhaust gas recirculation valve 11 by means of a T-shaped branch 18 with the air supply line 15 of the secondary air valve 12 connected.
- the branch 18 on the air supply line 15 is in one Line section between the secondary air pump 16 and the secondary air valve 12.
- the ventilation line 17 leads from the branch 18 to a ventilation connection 19 of the exhaust gas recirculation valve 11.
- the clean air in the direction of arrow 24 by means of the not shown Ventilation line 17 through the ventilation connection 19 into the exhaust gas recirculation valve 11 headed.
- the exhaust gas recirculation valve 11 also has an inlet opening 20 and a Outlet opening 22 on.
- At the inlet opening 20 is the exhaust pipe, not shown Internal combustion engine 10 connected, and the outlet opening 22 is not connected to the Intake pipe of the internal combustion engine 10 shown.
- FIG. 3 shows a preferred embodiment of the ventilation line 17 and one Section of the air supply line 15, on which the ventilation line 17 below Formation of a T-shaped branch 18 is connected shown.
- the Ventilation line 17 can be designed as a rigid line 26.
- the junction 18 can be made by a T-shaped connector, which on a its three connection ends with the ventilation line 17 and at the two other Connection ends with a section of the Air supply line 15 is connected in a suitable manner.
- the free ends of each Subsections 30 of the section of the air supply line 15 are for connecting further ones Construction elements each with, for example, a pipe clamp Connecting element 31 (shown only at one end).
- FIG. 5 Another alternative embodiment of the device for exhaust gas recirculation goes from Figure 5.
- the exhaust gas recirculation valve 11 and Secondary air valve 12 formed as a combined valve assembly 32.
- they are Exhaust gas recirculation valve 11 and the secondary air valve 12 with a common one Connection element 33 connected.
- the connecting element 33 has a clean air supply channel 34, which on the input side with the air supply line 15th is connected and by means of a suitable branch to the exhaust gas recirculation valve 11 and leads to the secondary air valve 12.
- the channel 34 thus conducts by means of the air supply line 15 Clean air supplied in the direction of arrow 39 to the exhaust gas recirculation valve 11 and Secondary air valve 12, from which the clean air by means of corresponding lines 35 or 37 in the direction of arrow 36 or 38 to the corresponding Components of the internal combustion engine 10 arrives.
- the exhaust gas recirculation valve 11 and that Secondary air valve 12 are in terms of their operation and / or their Operating position (open position or closed position) by means of a Control device 40 can be controlled.
- the exhaust gas recirculation valve 11 and that Secondary air valve 12 are thus preferably designed as electrical valves.
- the Control device 40 is through a line 41 with the exhaust gas recirculation valve 11 and through a line 42 is operatively connected to the secondary air valve 12 in a suitable manner. Furthermore, the control device 40 with the air pump 16 not shown in FIG be operatively connected accordingly.
- the control device 40 is suitable after a restart of the internal combustion engine 10 activate the secondary air pump 16 for about 80 seconds to a desired one To bring in secondary air through the secondary air valve 12.
- the secondary air valve 12 In the Secondary air injection, the secondary air valve 12 is in the open position and the exhaust gas recirculation valve 11 in the closed position.
- the secondary air valve 12 by a corresponding signal of the control device 40 brought into the closed position and the secondary air pump 16 deactivated at the same time.
- About four minutes after that Restarting the internal combustion engine is the start of exhaust gas recirculation through the Exhaust gas recirculation valve 11 is provided.
- the control device 40 initiates a Changing the operating position of the exhaust gas recirculation valve 11 from the closed position into a Open position, wherein the ventilation of the exhaust gas recirculation valve 11 through the Control device 40 or controlled by the exhaust gas recirculation valve 11 itself can be.
- the secondary air valve 12 and the secondary air pump 16 remain during the exhaust gas recirculation closed or deactivated and are by the Control unit 40 is only opened or activated for secondary air injection.
- exhaust gas recirculation has ended through the open exhaust gas recirculation valve 11 the same is brought into closed position by the control device 40. Since the Secondary air injection and exhaust gas recirculation in separate Time periods is a mutual negative influence of the Secondary air injection and exhaust gas recirculation with regard to the application of corresponding valves 11, 12 excluded with clean air.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
- Figur 1
- eine schematische Draufsicht einer erfindungsgemäßen Vorrichtung zur Abgasrückführung an einer Brennkraftmaschine;
- Figur 2
- eine schematische Seitenansicht der Vorrichtung gemäß Figur 1;
- Figur 3
- eine schematische, perspektivische Ansicht eines im vergrößerten Maßstab dargestellten und mit einer Luftzuführleitung verbundenen Abgasrückführventils;
- Figur 4
- eine teilweise geschnittene Seitenansicht eines im vergrößerten Maßstab dargestellten Abgasrückführventils und
- Figur 5
- eine schematische, teilweise geschnittene und im vergrößerten Maßstab gezeigte Detaildarstellung einer alternativen Ausführungsform der erfindungsgemäßen Vorrichtung.
Claims (10)
- Vorrichtung zur Abgasrückführung an einer Brennkraftmaschine, mit einem Abgasrückführventil, das zur Rückführung von Abgas eingangsseitig mit einer Abgasleitung der Brennkraftmaschine und ausgangsseitig mit einer Ansaugleitung der Brennkraftmaschine verbunden und zur Belüftung eingangsseitig mit Luft beaufschlagbar ist, und mit einem Sekundärluftventil, dem ein Luftzuführsystem zugeordnet ist, dadurch gekennzeichnet, daß das Abgasrückführventil (11) für die Luftbeaufschlagung eingangsseitig mit dem Luftzuführsystem (13) des Sekundärluftventils (12) verbunden ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Luftzuführsystem (13) zur Zuführung von Reinluft von einem Luftfilter (14) zum Sekundärluftventil (12) führt.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Abgasrückführventil (11) mittels einer von einer Luftzuführleitung (15) des Luftzuführsystems (13) abzweigenden Belüftungsleitung (17) mit der Reinluft belüftbar ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwischen dem Luftfilter (14) und dem Sekundärluftventil (12) eine Sekundärluftpumpe (16) derart mit der Luftzuführleitung (15) wirkverbunden ist, daß die Reinluft vom Luftfilter (14) ansaugbar und unter Druck dem Sekundärluftventil (12) zuführbar ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Belüftungsleitung (17) zwischen der Sekundärluftpumpe (16) und dem Sekundärluftventil (12) mit der Luftzuführleitung (15) verbunden ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Belüftungsleitung (17) unmittelbar vor der Mündung der Luftzuführleitung (15) in das Sekundärluftventil (12) mit der Luftzuführleitung (15) verbunden ist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Abgasrückführventil (11) und das Sekundärluftventil (12) zusammen als kombinierte Ventilbaugruppe (32) ausgebildet sind.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Luftzuführsystem (13) vom Luftfilter (14) zur Ventilbaugruppe (32) führt.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ventilbaugruppe (32) einen eingangsseitig mit der Luftzuführleitung (15) verbundenen, sich zum Abgasrückführventil (11) und zum Sekundärluftventil (12) verzweigenden Kanal (34) aufweist.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Abgasrückführventil (11), das Sekundärluftventil (12) und die Sekundärluftpumpe (16) mittels einer Steuervorrichtung (14) separat ansteuerbar sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19959138.5A DE19959138B4 (de) | 1999-12-08 | 1999-12-08 | Vorrichtung zur Abgasrückführung an einer Brennkraftmaschine |
DE19959138 | 1999-12-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1106811A2 true EP1106811A2 (de) | 2001-06-13 |
EP1106811A3 EP1106811A3 (de) | 2002-08-28 |
Family
ID=7931836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00125205A Withdrawn EP1106811A3 (de) | 1999-12-08 | 2000-11-22 | Vorrichtung zur Abgasrückführung an einer Brennkraftmaschine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1106811A3 (de) |
DE (1) | DE19959138B4 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048968A (en) * | 1975-07-17 | 1977-09-20 | Nissan Motor Company, Limited | Exhaust gas recirculation system |
US4177641A (en) * | 1978-03-07 | 1979-12-11 | Toyota Jidosha Kogyo Kabushiki Kaisha | Apparatus for cleaning exhaust gas for an internal combustion engine |
DE4445490A1 (de) * | 1994-12-20 | 1996-06-27 | Audi Ag | Vorrichtung zur Abgasentgiftung an einer Brennkraftmaschine |
US5640848A (en) * | 1994-10-05 | 1997-06-24 | Dr. Ing. H.C.F. Porsche Ag | Multi-cylinder internal combustion engine |
DE19809861A1 (de) * | 1998-03-07 | 1999-09-09 | Mann & Hummel Filter | Vorrichtung zur Rückführung von Abgasen bei einem Verbrennungsmotor |
DE19919126A1 (de) * | 1998-04-28 | 1999-11-04 | Nissan Motor | Vorrichtung und Verfahren zur Diagnose von AGR-Systemen |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9301491U1 (de) * | 1993-02-04 | 1994-06-01 | Schliebs Guenter Dipl Ing | Akustische Warnvorrichtung an Kraftfahrzeugen, insbesondere Nutzfahrzeugen mit sichtbehindernden Aufbauten |
DE19757931A1 (de) * | 1997-12-24 | 1999-07-01 | Mannesmann Vdo Ag | Vorrichtung zum Rückführen von Abgas und zum Vorheizen eines Abgasreinigers |
-
1999
- 1999-12-08 DE DE19959138.5A patent/DE19959138B4/de not_active Expired - Fee Related
-
2000
- 2000-11-22 EP EP00125205A patent/EP1106811A3/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048968A (en) * | 1975-07-17 | 1977-09-20 | Nissan Motor Company, Limited | Exhaust gas recirculation system |
US4177641A (en) * | 1978-03-07 | 1979-12-11 | Toyota Jidosha Kogyo Kabushiki Kaisha | Apparatus for cleaning exhaust gas for an internal combustion engine |
US5640848A (en) * | 1994-10-05 | 1997-06-24 | Dr. Ing. H.C.F. Porsche Ag | Multi-cylinder internal combustion engine |
DE4445490A1 (de) * | 1994-12-20 | 1996-06-27 | Audi Ag | Vorrichtung zur Abgasentgiftung an einer Brennkraftmaschine |
DE19809861A1 (de) * | 1998-03-07 | 1999-09-09 | Mann & Hummel Filter | Vorrichtung zur Rückführung von Abgasen bei einem Verbrennungsmotor |
DE19919126A1 (de) * | 1998-04-28 | 1999-11-04 | Nissan Motor | Vorrichtung und Verfahren zur Diagnose von AGR-Systemen |
Also Published As
Publication number | Publication date |
---|---|
DE19959138B4 (de) | 2014-04-03 |
EP1106811A3 (de) | 2002-08-28 |
DE19959138A1 (de) | 2001-06-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1274928B1 (de) | Turbolader-einrichtung für eine brennkraftmaschine | |
DE60203217T2 (de) | Staudruck Abgasrückführleitung | |
DE102017105889A1 (de) | Ventil in einer Abgasleitung und entsprechendes Montageverfahren | |
EP1937957A1 (de) | Anordnung zur rückführung und kühlung von abgas einer brennkraftmaschine | |
EP2501922B1 (de) | Saugrohrabschnitt und sauganlage | |
EP1394380A1 (de) | Aufladesystem für eine Brennkraftmaschine | |
WO2001044650A1 (de) | Einrichtung zur abgasrückführung | |
DE2617579A1 (de) | Anlage zur abgasrueckfuehrung | |
DE102007035556A1 (de) | Mischvorrichtung zum Zumischen eines Abgasrückführstroms in einen Ladeluftstrom einer Brennkraftmaschine | |
DE3118787C2 (de) | Vorrichtung zum Steuern der Abgasrückführung in einem Dieselmotor | |
EP2305991B1 (de) | Brennkraftmaschine mit einem Abgasturbolader und einem Abgasrückführsystem | |
DE60302258T2 (de) | Abgasrückführeinrichtung für Brennkraftmaschinen | |
DE69529795T2 (de) | Schaltventil für Kreislauf zum Einspritzen von Luft in den Auspuff eines Verbrennungsmotors | |
EP1240423B1 (de) | Kolbenmotor | |
DE10216773B4 (de) | Kühler für ein dem Hauptabgasstrom eines Verbrennungsmotors entnommenes Abgas | |
EP1336749A2 (de) | Ansaugsystem für eine Brennkraftmaschine | |
EP0104524B1 (de) | Einrichtung zum Rückführen von Abgas einer Brennkraftmaschine | |
EP1106811A2 (de) | Vorrichtung zur Abgasrückführung an einer Brennkraftmaschine | |
DE202019102166U1 (de) | Angesteuertes Ventil für eine Abgasleitung | |
DE102009019754A1 (de) | Verdichter für einen Abgasturbolader | |
DE102012101767B4 (de) | Verbrennungskraftmaschine | |
DE102020005110A1 (de) | Abgasrückführungseinrichtung für eine Verbrennungskraftmaschine insbesondere eines Kraftfahrzeugs | |
EP1058782B1 (de) | Ansaugvorrichtung für eine brennkraftmaschine | |
DE19526241B4 (de) | Lufteinlaßkanalsystem für Brennkraftmaschinen | |
DE102013111249B4 (de) | Verbrennungsmotor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20030228 |
|
AKX | Designation fees paid |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
17Q | First examination report despatched |
Effective date: 20031201 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20080326 |