DE10260016A1 - Exhaust gas feedback arrangement for internal combustion engine has engine braking and exhaust gas feedback valve in form of single hydraulically or pneumatically operated valve - Google Patents
Exhaust gas feedback arrangement for internal combustion engine has engine braking and exhaust gas feedback valve in form of single hydraulically or pneumatically operated valve Download PDFInfo
- Publication number
- DE10260016A1 DE10260016A1 DE10260016A DE10260016A DE10260016A1 DE 10260016 A1 DE10260016 A1 DE 10260016A1 DE 10260016 A DE10260016 A DE 10260016A DE 10260016 A DE10260016 A DE 10260016A DE 10260016 A1 DE10260016 A1 DE 10260016A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- exhaust gas
- internal combustion
- combustion engine
- exhaust
- 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- Withdrawn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
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0276—Actuation of an additional valve for a special application, e.g. for decompression, exhaust gas recirculation or cylinder scavenging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
- F01L13/065—Compression release engine retarders of the "Jacobs Manufacturing" type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/04—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation using engine as brake
-
- 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
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
-
- 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
- F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
-
- 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
- F02M26/52—Systems for actuating EGR valves
- F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Abgasrückführung bei einer Brennkraftmaschine mit einem Kurbelgehäuse, in dem eine Kurbelwelle drehbar gelagert ist, an der zumindest ein einen Kolben tragendes Pleuel angelenkt ist, wobei der Kolben in einem von einem Zylinderkopf unter Bildung eines Arbeitsraums abgedeckten Zylinder bewegbar ist, wobei der Arbeitsraum über Gaswechselventile mit einem Einlasskanal und einem Abgaskanal verbunden ist und wobei weiterhin ein den Abgaskanal mit dem Arbeitsraum verbindendes kombiniertes Motorbrems-/Abgasrückführventil vorhanden ist sowie ein Verfahren zur Steuerung der Abgasrückführung.The invention relates to a device for exhaust gas recirculation an internal combustion engine with a crankcase in which a crankshaft is rotatably mounted on the at least one carrying a piston Connecting rod is articulated, with the piston in one of a cylinder head covered cylinder is movable to form a work space, wherein the workspace over Gas exchange valves connected to an inlet duct and an exhaust duct is and a connection connecting the exhaust duct to the work space Combined engine brake / exhaust gas recirculation valve is available as well as a method for controlling the exhaust gas recirculation.
Eine derartige Vorrichtung ist aus
der
Der Erfindung liegt die Aufgabe zugrunde, ein einfach aufgebautes kombiniertes Motorbrems-/Abgasrückführventil anzugeben und ein Verfahren zur Steuerung der über das kombinierte Motorbrems-/Abgasrückführventil bewirkten Abgasrückführung.The invention is based on the object simply constructed combined engine brake / exhaust gas recirculation valve specify and a method for controlling the combined engine brake / exhaust gas recirculation valve caused exhaust gas recirculation.
Diese Aufgabe wird dadurch gelöst, dass das Motorbrems-/Abgasrückführventil ein hydraulisch oder pneumatisch betätigtes Einfachventil ist. Es hat sich erwiesen, dass mit einem hydraulisch oder pneumatisch betätigten Einfachventil sowohl eine zuverlässige und genaue Steuerung der Motorbremsfunktion als auch der Abgasrückführung möglich ist und die benötigten zur Verstellung des kombinierten Motorbrems-/Abgasrückführventil erforderlichen Drücke von dem Hydrauliksystem oder dem Pneumatiksystem der Brennkraftmaschine oder des Fahrzeugs aufgebracht werden können. Dadurch ist eine wesentliche Vereinfachung gegenüber dem im Stand der Technik bekannten komplizierten Doppelventil erreicht. Zur Betätigung des Motorbrems-/Abgasrückführventils ist auf den Ventilschaft ein Druckkolben aufgesetzt, der auf der von dem Ventilschaft wegweisenden Seite von einem Arbeitsraum begrenzt ist, in den das Hydraulikfluid, insbesondere Drucköl oder Druckluft bei pneumatischer Betätigung einleitbar ist.This task is solved in that the engine brake / exhaust gas recirculation valve is a hydraulically or pneumatically operated single valve. It has proven to be with a hydraulically or pneumatically operated single valve both a reliable and precise control of the engine brake function and the exhaust gas recirculation is possible and The necessities for adjusting the combined engine brake / exhaust gas recirculation valve required pressures from the hydraulic system or the pneumatic system of the internal combustion engine or the vehicle can be applied. This is an essential one Simplification versus achieved the complicated double valve known in the prior art. For actuation the engine brake / exhaust gas recirculation valve a pressure piston is placed on the valve stem bounded by a working area on the side facing away from the valve stem in which the hydraulic fluid, in particular compressed oil or compressed air with pneumatic actuation can be initiated.
In Weiterbildung der Erfindung ist der Ventilteller des Einfachventils in einer Ausbuchtung im Zylinderkopfboden neben einem als Auslassventil fungierenden Gaswechselventil angeordnet. Dabei ist wiederum in weiterer Ausgestaltung das Einfachventil und die Ausbuchtung so angeordnet, dass die Ausbuchtung sich zu zwei nebeneinanderliegenden Auslassventilsitzbereichen erstreckt und im Randbereich in eine der Auslassventilsitzringaufnahme vorgelagerte Anfasung übergeht. Dadurch ist ein bei der Motorbremsfunktion wirksamer Überströmkanal aus dem Arbeitsraum hinausgelegt. Dadurch ergeben sich einerseits bei der Motorbremsfunktion günstigere Strömungsverhältnisse, andererseits wird die Auslegung des Arbeitsraums und die Verbrennung durch diese Ausgestaltung nicht nachteilig beeinflusst.In development of the invention the valve plate of the single valve in a bulge in the cylinder head floor arranged next to a gas exchange valve acting as an outlet valve. In a further embodiment, the single valve and the bulge is arranged so that the bulge is two Extending exhaust valve seat areas extends and in the edge area in front of the exhaust valve seat ring seat Chamfer passes. As a result, an overflow channel which is effective in the engine braking function is removed from the Workspace. On the one hand, this results in the Engine brake function cheaper Flow conditions, on the other hand, the design of the work space and the combustion not adversely affected by this configuration.
Zur Abgasrückführung wird das Einfachventil nach einem Ausschiebetakt im folgenden Ansaugtakt bedarfsweise geöffnet. Dabei erfolgt die Öffnung zumindest in einem Teilbereich zwischen ca. 405°KW und 475°KW. In diesem Bereich ist der in dem Abgaskanal herrschende Druck höher sowohl als der Ladedruck als auch der Zylinderdruck, so dass einerseits das Einfachventil problemlos zu öffnen ist und andererseits Abgas ohne zusätzliche druckunterstützende Maßnahmen in den Arbeitsraum des Zylinders zurückgeführt werden kann.The single valve is used for exhaust gas recirculation an extension stroke in the following intake stroke opened if necessary. there the opening takes place at least in a section between approx. 405 ° KW and 475 ° KW. In this area is the pressure prevailing in the exhaust duct is higher than the boost pressure as well as the cylinder pressure, so that on the one hand the single valve easy to open is and on the other hand exhaust gas without additional pressure-supporting measures can be returned to the working area of the cylinder.
Weitere Vorteile der Erfindung sind der Zeichnungsbeschreibung zu entnehmen, in der ein in den Figuren dargestelltes Ausführungsbeispiel der Erfindung näher beschrieben ist. Es zeigen:Further advantages of the invention are the drawing description in which one in the figures illustrated embodiment the invention closer is described. Show it:
Der Zylinder
In
In
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10260016A DE10260016A1 (en) | 2002-12-19 | 2002-12-19 | Exhaust gas feedback arrangement for internal combustion engine has engine braking and exhaust gas feedback valve in form of single hydraulically or pneumatically operated valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10260016A DE10260016A1 (en) | 2002-12-19 | 2002-12-19 | Exhaust gas feedback arrangement for internal combustion engine has engine braking and exhaust gas feedback valve in form of single hydraulically or pneumatically operated valve |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10260016A1 true DE10260016A1 (en) | 2004-07-08 |
Family
ID=32477872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10260016A Withdrawn DE10260016A1 (en) | 2002-12-19 | 2002-12-19 | Exhaust gas feedback arrangement for internal combustion engine has engine braking and exhaust gas feedback valve in form of single hydraulically or pneumatically operated valve |
Country Status (1)
Country | Link |
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DE (1) | DE10260016A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19727584C1 (en) * | 1997-06-28 | 1998-10-08 | Daimler Benz Ag | Compression brake for internal combustion engine |
DE19839420A1 (en) * | 1998-08-29 | 2000-03-02 | Deutz Ag | Engine brake device for an internal combustion engine |
US6354254B1 (en) * | 1999-04-14 | 2002-03-12 | Diesel Engine Retarders, Inc. | Exhaust and intake rocker arm assemblies for modifying valve lift and timing during positive power |
-
2002
- 2002-12-19 DE DE10260016A patent/DE10260016A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19727584C1 (en) * | 1997-06-28 | 1998-10-08 | Daimler Benz Ag | Compression brake for internal combustion engine |
DE19839420A1 (en) * | 1998-08-29 | 2000-03-02 | Deutz Ag | Engine brake device for an internal combustion engine |
US6354254B1 (en) * | 1999-04-14 | 2002-03-12 | Diesel Engine Retarders, Inc. | Exhaust and intake rocker arm assemblies for modifying valve lift and timing during positive power |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R016 | Response to examination communication | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140701 |