EP1269004A2 - Vorrichtung zur rückführung des abgases einer brennkraftmaschine - Google Patents
Vorrichtung zur rückführung des abgases einer brennkraftmaschineInfo
- Publication number
- EP1269004A2 EP1269004A2 EP00929479A EP00929479A EP1269004A2 EP 1269004 A2 EP1269004 A2 EP 1269004A2 EP 00929479 A EP00929479 A EP 00929479A EP 00929479 A EP00929479 A EP 00929479A EP 1269004 A2 EP1269004 A2 EP 1269004A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- exhaust gas
- exhaust
- internal combustion
- combustion engine
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 20
- 230000003134 recirculating effect Effects 0.000 title abstract 2
- 239000002826 coolant Substances 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 44
- 238000004939 coking Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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
- F02M26/73—Housings with means for heating or cooling the EGR valve
-
- 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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
-
- 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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
-
- 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
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/68—Closing members; Valve seats; Flow passages
-
- 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
- F02M26/50—Arrangements or methods for preventing or reducing deposits, corrosion or wear caused by impurities
Definitions
- the invention relates to a device for returning the exhaust gas of an internal combustion engine of the handle in Oberbe ⁇ of claim 1 near the kind defined.
- a device of the type mentioned is described in DE 196 37 078 AI.
- a bushing attachment is provided on the valve rod, by means of which the valve guide is to be protected against heat radiation and contamination.
- the effectiveness of the socket approach is limited.
- DE 44 24 644 Cl also describes an exhaust gas recirculation valve with an exhaust gas-guiding valve sleeve arranged in an intake duct, the valve sleeve being enclosed by a flange with good heat conductivity, through which good heat dissipation of the hot exhaust gas is to be achieved, so that more cost-effective Plastic injection parts can be used for exhaust gas recirculation.
- the exhaust gas valve should be arranged as close as possible to the exit area of the exhaust gases from the internal combustion engine, so that there is no deposition due to cooled exhaust gases due to coking of exhaust gas particles.
- CONFIRMATION COPY that affect the valve function.
- the high exhaust gas temperatures that prevent coking require correspondingly heat-resistant and therefore cost-intensive components.
- the valve housing with the exhaust valve has an intermediate position, i.e. m arranged at a distance from the internal combustion engine, by means of which the problems resulting from an exhaust gas temperature which is too low and too high can be mastered to some extent satisfactorily.
- the present invention is based on the object of providing a device of the type mentioned at the outset by which higher exhaust gas temperatures, by means of which coking or lacquer formation by the exhaust gas are avoided, at the same time, despite the higher exhaust gas temperature, no problems with respect to the other components occur.
- the at least one coolant channel which in an advantageous embodiment of the invention is connected to the coolant system of the internal combustion engine, enables an effective reduction in the valve housing temperature to be achieved. In this way, the actuating device in particular can be protected from high temperatures. This is particularly the case if, in an embodiment according to the invention, in the case of an exhaust gas valve which m the valve housing m a valve guide surrounding the valve stem. tion is stored, the coolant channel at least partially, but preferably annularly, surrounds the valve guide.
- the space m in the valve housing m can be used particularly advantageously as a coolant channel without the valve housing being increased in size.
- an exhaust gas collecting space can be arranged behind the valve plate, from which the exhaust gas return line branches off.
- the exhaust gas collecting space in particular in the case of a spherical shape, can be designed in such a way that there are lower throughflow losses, which means that there are only slight frictional losses for the exhaust gas return line.
- the exhaust gas pressure line is connected in the form of a funnel to the spherical exhaust gas collecting space. In this way, an edge-free and therefore low-friction flow pattern is achieved.
- a further very advantageous embodiment of the invention can consist in that the valve seat of the exhaust gas valve has a step contour in such a way that when the valve is opened, at least two different openings result in smaller opening angles at the beginning of the opening.
- a smaller opening angle at the beginning of the exhaust gas recirculation means that a significantly better control and thus a metered exhaust gas recirculation can be achieved with a corresponding sensitivity.
- FIG. 1 shows a longitudinal section along the line I-I of FIG. 2 through a valve housing of an exhaust gas recirculation valve
- FIG. 2 shows a longitudinal section along the line II-II of FIG. 1 through a valve housing of an exhaust gas recirculation valve
- FIG. 3 shows a section along the line III-III of FIG. 2 through a valve housing of an exhaust gas recirculation valve
- Fig. 4 is a perspective view of the valve housing
- Fig. 5 is an enlarged view of the valve seat and the lower region of the valve.
- an exhaust gas valve 2 with a valve stem 3 and a valve disk 4 is mounted at the front end m of a valve guide 5 surrounding the valve stem 3.
- the valve plate 4 of the valve 2 works with a valve seat 6 designed in the valve housing 1. together, which is formed by an insertion sleeve 7.
- the shape of the insertion sleeve 7 (only shown in FIG. 1) is discussed in more detail below.
- Exhaust gas from the outlet area of an internal combustion engine flows in a direction A into the valve housing 1, it reaching a spherical exhaust gas collection space 8 when the valve 2 is open.
- An exhaust gas pressure line 9 branches off from the exhaust gas collection space 8 from the exhaust gas collection space 8.
- the exhaust gas pressure line 9 has a funnel shape, which is attached to the outside of the circumferential wall in the center plane of the sphere, so that there is a low-friction outflow from the exhaust gas collecting space 8.
- a cover cap 10 is arranged on the valve stem 3.
- the position of the cover cap 10, which follows the movements of the exhaust gas valve 2, is selected such that its underside is at least approximately flush with the wall area of the exhaust gas collection space 8 at this point when the valve is open, as shown in FIG. 1, or so that there is a stepless continuation of the wall contour of the exhaust gas plenum and flow losses due to protruding edges or recesses are avoided.
- valve housing 1 is provided in the region of the valve guide 5 with a coolant channel 11 which surrounds the valve guide 5 in an annular manner.
- the inlet to the coolant channel 11 takes place via a connecting piece 12.
- the connecting piece 12 is connected to the cooling system of the internal combustion engine in a manner not shown in the same way as a return, not shown.
- FIG. 1 only schematically shown actuation devices 14 for the exhaust valve 2 are arranged.
- the receiving space 13 for the actuating device 14 is reliably protected against the high temperatures of the exhaust gas entering the valve housing 1 by the intermediate coolant channel 11.
- the valve housing 1 can be arranged very close to the internal combustion engine or optionally flanged to the internal combustion engine via a mounting flange 18, so that the exhaust gas temperature in the valve housing 1 is still so high that there are no deposits on the valve stem and thus can lead to impairment of the valve function.
- no high actuation forces are required to open and close the exhaust valve 2, which is why the actuation device 14 can be designed correspondingly more cost-effectively.
- the valve seat 6 or the plug-in sleeve 7 forming the valve seat has a step contour.
- a first stage 15 is adapted in its course to the peripheral wall of the valve plate 4 so that there is a closed position and thus a shut-off of the exhaust gas collecting space 8.
- a second stage 16 - running in the opening direction of the exhaust valve 2 - there is a smaller opening angle than in a third stage 17, in which the exhaust valve 2 is fully open.
- the opening angle of the second stage 16 can e.g. 15 ° with respect to the longitudinal axis of the exhaust valve 2 and the opening angle of the third stage e.g. 40 ° with respect to the longitudinal axis of the exhaust valve 2.
- the two stages 16 and 17 with their different opening angles allow particularly sensitive regulation of the amount of recirculated exhaust gas, in particular in the case of a partial opening.
- an alternative or additional heat dissipation from the valve housing by creating thermal bridges from this to surrounding components, for example through contact surfaces.
- These can be formed by a mounting flange which is enlarged compared to the mounting flange 18 according to FIG. 1 and which (over a large area) bears against counter surfaces of the motor housing or is pressed against it.
- the arrangement of the contact surfaces in the region of cooled counter surfaces of the engine housing, for example those of the cylinder head, is particularly advantageous.
- the heat generated in the exhaust gas recirculation valve can be released to the surroundings via cooling fins. These are preferably arranged on the outside of the housing in the region of the exhaust gas collection space 8 and / or the coolant channel 11.
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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19920520 | 1999-05-05 | ||
| DE19920520A DE19920520C2 (de) | 1999-05-05 | 1999-05-05 | Vorrichtung zur Rückführung des Abgases einer Brennkraftmaschine |
| PCT/EP2000/003960 WO2000068560A2 (de) | 1999-05-05 | 2000-05-03 | Vorrichtung zur rückführung des abgases einer brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1269004A2 true EP1269004A2 (de) | 2003-01-02 |
| EP1269004B1 EP1269004B1 (de) | 2005-07-20 |
Family
ID=7906949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00929479A Expired - Lifetime EP1269004B1 (de) | 1999-05-05 | 2000-05-03 | Vorrichtung zur rückführung des abgases einer brennkraftmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6631707B1 (de) |
| EP (1) | EP1269004B1 (de) |
| AR (1) | AR023834A1 (de) |
| DE (2) | DE19920520C2 (de) |
| ES (1) | ES2243268T3 (de) |
| WO (1) | WO2000068560A2 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU90761B1 (en) * | 2001-04-20 | 2002-10-21 | Delphi Tech Inc | Device for exhaust gas recirculation |
| JPWO2003006815A1 (ja) * | 2001-07-09 | 2004-11-04 | 三菱電機株式会社 | 排気ガス再循環バルブの取り付け装置 |
| DE10217626A1 (de) | 2002-04-20 | 2003-10-30 | Wahler Gmbh & Co Kg Gustav | Vorrichtung zur Rückführung des Abgases einer Brennkraftmaschine |
| DE102005012644A1 (de) * | 2005-03-18 | 2006-09-21 | Siemens Ag | Verfahren zur Rückführung eines Teilstromes an Abgas zu einem Verbrennungsmotor eines Kraftfahrzeuges |
| EP1739301A1 (de) * | 2005-06-28 | 2007-01-03 | Delphi Technologies, Inc. | AGR-Ventil für eine Brennkraftmaschine und Ventilsitz dafür |
| WO2007098854A1 (de) * | 2006-02-24 | 2007-09-07 | Behr Gmbh & Co. Kg | Ventil zur regelung eines abgasstroms eines verbrennungsmotors, wärmetäuscher zur abgaskühlung, system mit zumindest einem ventil und mit zumindest einem wärmetäuscher |
| DE102010047977A1 (de) | 2010-10-08 | 2011-06-22 | Daimler AG, 70327 | Verbrennungskraftmaschine, insbesondere für einen Kraftwagen |
| CN103953471A (zh) * | 2014-04-17 | 2014-07-30 | 无锡隆盛科技股份有限公司 | 用于降低egr阀积碳的装置 |
| CN106795835B (zh) * | 2015-09-11 | 2019-01-04 | 株式会社小松制作所 | 排气再循环阀、排气再循环阀的解冻系统以及发动机 |
| JP7150624B2 (ja) * | 2019-01-17 | 2022-10-11 | 愛三工業株式会社 | Egrバルブ |
| JP7068219B2 (ja) * | 2019-03-18 | 2022-05-16 | トヨタ自動車株式会社 | 排気再循環バルブ暖機装置 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3828746A (en) * | 1972-12-01 | 1974-08-13 | Colt Ind Operating Corp | Metering exhaust gas recirculation apparatus and system |
| JPS5390505A (en) * | 1977-01-20 | 1978-08-09 | Isuzu Motors Ltd | Exhaust gas purifier for internal combustion engine having chamber |
| FR2442342A1 (fr) * | 1978-11-24 | 1980-06-20 | Peugeot | Dispositif perfectionne de reglage de la quantite de gaz d'echappement recycles sur un moteur diesel |
| US4343284A (en) * | 1980-03-10 | 1982-08-10 | Martinez Delgado Nicolas | Anti-pollution system for internal combustion and diesel engines |
| JPH07238871A (ja) * | 1994-02-28 | 1995-09-12 | Unisia Jecs Corp | 排気還流制御装置 |
| DE4424644C5 (de) * | 1994-07-13 | 2005-11-17 | Robert Bosch Gmbh | Abgasrückführungsventil |
| DE19521573C2 (de) | 1995-06-14 | 1998-05-28 | Man Nutzfahrzeuge Ag | Abgasrückführung an einer aufgeladenen Brennkraftmaschine |
| JP3204043B2 (ja) | 1995-06-22 | 2001-09-04 | 日産自動車株式会社 | 流量制御バルブ |
| DE19730998C2 (de) * | 1996-07-19 | 2001-10-31 | Hitachi Ltd | Motorbetätigtes Durchflußmengensteuerventil und Abgasrückführungssteuerventil für Verbrennungsmotoren |
| DE19637078A1 (de) * | 1996-09-12 | 1998-03-19 | Pierburg Ag | Elektromagnetisches Steuerventil für Abgasrückführung |
| US5937835A (en) * | 1997-06-24 | 1999-08-17 | Eaton Corporation | EGR system and improved actuator therefor |
| EP1015750B1 (de) * | 1997-09-16 | 2003-05-02 | FILTERWERK MANN + HUMMEL GmbH | Anordnung zur rückführung von abgas bei einem verbrennungsmotor |
| DE19744596A1 (de) * | 1997-10-09 | 1999-04-15 | Volkswagen Ag | Abgasrückführventil |
| SE517844C2 (sv) * | 1997-12-03 | 2002-07-23 | Volvo Lastvagnar Ab | Arrangemang vid förbränningsmotor samt förfarande för minskning av skadliga utsläpp |
| EP0940569B1 (de) * | 1998-03-03 | 2006-02-08 | Nissan Motor Co., Ltd. | Verbrennungssteuerapparat für einen Dieselmotor |
| US6237330B1 (en) * | 1998-04-15 | 2001-05-29 | Nissan Motor Co., Ltd. | Exhaust purification device for internal combustion engine |
-
1999
- 1999-05-05 DE DE19920520A patent/DE19920520C2/de not_active Expired - Lifetime
-
2000
- 2000-05-03 AR ARP000102111A patent/AR023834A1/es unknown
- 2000-05-03 WO PCT/EP2000/003960 patent/WO2000068560A2/de not_active Ceased
- 2000-05-03 DE DE50010783T patent/DE50010783D1/de not_active Expired - Fee Related
- 2000-05-03 EP EP00929479A patent/EP1269004B1/de not_active Expired - Lifetime
- 2000-05-03 ES ES00929479T patent/ES2243268T3/es not_active Expired - Lifetime
- 2000-05-03 US US09/959,678 patent/US6631707B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0068560A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AR023834A1 (es) | 2002-09-04 |
| DE19920520A1 (de) | 2000-11-16 |
| DE50010783D1 (de) | 2005-08-25 |
| US6631707B1 (en) | 2003-10-14 |
| DE19920520C2 (de) | 2001-04-26 |
| WO2000068560A3 (de) | 2001-04-26 |
| EP1269004B1 (de) | 2005-07-20 |
| ES2243268T3 (es) | 2005-12-01 |
| WO2000068560A2 (de) | 2000-11-16 |
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