EP1703115B1 - Thermostatic valve with integrated exhaust gas recirculation valve - Google Patents

Thermostatic valve with integrated exhaust gas recirculation valve Download PDF

Info

Publication number
EP1703115B1
EP1703115B1 EP06003871.8A EP06003871A EP1703115B1 EP 1703115 B1 EP1703115 B1 EP 1703115B1 EP 06003871 A EP06003871 A EP 06003871A EP 1703115 B1 EP1703115 B1 EP 1703115B1
Authority
EP
European Patent Office
Prior art keywords
thermostatic valve
cooling
valve
exhaust gas
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.)
Not-in-force
Application number
EP06003871.8A
Other languages
German (de)
French (fr)
Other versions
EP1703115A1 (en
Inventor
Herbert Schmitz
Jan Zimmermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GM Global Technology Operations LLC
Original Assignee
GM Global Technology Operations LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GM Global Technology Operations LLC filed Critical GM Global Technology Operations LLC
Publication of EP1703115A1 publication Critical patent/EP1703115A1/en
Application granted granted Critical
Publication of EP1703115B1 publication Critical patent/EP1703115B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/04—Arrangements of liquid pipes or hoses
    • 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
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers
    • 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
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • 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
    • F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control

Definitions

  • the present invention relates to a thermostatic valve of a cooling water circuit for an internal combustion engine with a thermostatic valve housing to which at least one cooling water inlet opening and a cooling water outlet opening for a small cooling water circuit is arranged, and a flange for mounting to a cylinder head of the internal combustion engine, and a cooling water outlet opening for forwarding the cooling water to a large cooling water circuit in accordance with the cooling water temperature, wherein the thermostatic valve housing further corresponds to an EGR valve of an exhaust gas recirculation device.
  • exhaust gas recirculation systems are used to reduce the nitrogen oxide emission and to achieve a lower fuel consumption, in diesel engines this applies in particular to the formation of particles.
  • the combustion peak temperature is lowered. This measure reduces the very strong temperature-dependent nitric oxide emissions.
  • the nitrogen oxide formation reaction is exponentially dependent on the combustion temperature.
  • the exhaust gas contains little or no Oxygen molecules. To cover the greater demand for oxygen, a larger amount of clean air is needed. In the partial load range with wide open throttle and excess air thus lower throttle losses occur, whereby a lower consumption can be achieved.
  • By adding exhaust gas throttling of the clean air is greatly reduced for a given amount of fuel.
  • the exhaust gas recirculation (EGR) is usually located in the region of the cylinder head of an internal combustion engine between the intake and the exhaust manifold, usually on the cylinder head in the vicinity of the cooling water circuit for the internal combustion engine.
  • the cooling water system consists essentially of a small and a large cooling water circuit.
  • the cooling water circulates in the large and small cooling water circuit starting from the internal combustion engine via a radiator arranged in the front region of the vehicle, from which the cooled cooling water is returned to the internal combustion engine.
  • the circulation is achieved by means of a pump switched on in the cooling water circuit.
  • the cooling water circulates within a small cooling water circuit, so not on the radiator. Only when the cooling water temperature has reached a fixed value_, a thermostatic valve switches on the cooling water circulation of the large cooling water circuit.
  • cooling water is also used for heating the vehicle interior and for cooling the exhaust gas flowing through the exhaust gas recirculation device.
  • the exhaust gas recirculation device is arranged with deviations depending on the design of the gasoline or diesel engine between the exhaust manifold and the intake manifold of the internal combustion engine.
  • the exhaust gas taken from the exhaust manifold is valve controlled to the fuel-air mixture in the intake manifold.
  • the EGR valve is used to control the flow of exhaust gas and is controlled by various parameters such as accelerator pedal position, engine speed, air temperature, air pressure, pure air mass flow, etc. and more accurate adjustments of the EGR valve position. Furthermore, it is necessary to cool excessively heated exhaust gas to a tolerable level before returning it to the intake manifold, because cooled exhaust gas enhances the effect of reducing emissions.
  • an EGR cooler is used, which is in communication with the large cooling water circuit of the internal combustion engine.
  • Appropriate piping is required to connect the EGR valve, EGR cooler and thermostat valve of the cooling water circuit.
  • a motor radiator assembly which has a central opening for receiving a generator to be cooled.
  • the central opening is surrounded by an annular cooling channel, which on one side a Inlet and on the opposite side has an outlet.
  • an exhaust gas recirculation valve is provided in a housing.
  • a thermostatic valve is provided in a thermostat housing.
  • the thermostat housing, the walls of the central annular cooling channel and the housing of the exhaust gas recirculation valve disposed opposite the thermostat housing are parts of a common radiator transfer body.
  • thermostatic valve of a cooling water circuit which corresponds minimal space with an EGR valve and can be mounted in a simple manner on the engine.
  • the invention includes the technical teaching that in addition to the thermostatic valve mechanism in addition, the valve mechanism of the EGR valve is integrated in the thermostatic valve housing, wherein the thermostatic valve housing flowing through cooling water is used to cool the exhaust gas flowing through the EGR valve.
  • the advantage of the solution according to the invention lies in the fact that a separate housing for the EGR valve completely eliminated and thus also seals or pipes for connection to the housing of the thermostatic valve are dispensable. A correspondingly lower installation costs are incurred.
  • the inventive functional integration of a thermostatic valve function with an EGR valve function in a single housing the space size decreases accordingly.
  • a synergy effect is achieved in that the cooling water, which flows through the thermostatic valve housing, is used simultaneously for cooling the exhaust gas, which flows through the EGR valve.
  • the EGR cooler can be omitted depending on the cooling requirements.
  • the integration of the EGR valve in the thermostatic valve housing is designed such that the thermostatic valve housing has a recess for receiving the valve mechanism of the EGR valve, which is closed by a cover for covering the actuating unit of the EGR valve.
  • the leading to the valve mechanism of the EGR valve and channels leading away therefrom are thus formed in the thermostatic valve housing and on the cover provided detachably on the thermostatic valve housing, on the one hand, the actuating unit of the EGR valve is accessible; On the other hand, the electrical termination for the actuator unit is arranged on the cover.
  • the EGR channels which are in communication with the EGR valve are preferably arranged adjacent to the housing-internal cooling water passages in the thermostatic valve housing.
  • the adjacent arrangement a heat exchange between the hot exhaust gas and the cooling water is achieved with a sufficient efficiency.
  • To increase the efficiency of the EGR channels can also run at least partially within cooling water channels, so that they are lapped by the cooling water.
  • the thermostatic valve housing with which the thermostatic valve is attached to the cylinder head of the internal combustion engine, at least introduced the inlet opening of the recirculated exhaust gas from the cooling water inlet and cooling water outlet opening, extending transversely over the flange surface securing groove is.
  • a strict separation of the exhaust gas recirculation circuit is achieved by the cooling water circuit, so that leakage in the sealing area between the cylinder head and thermostatic valve cooling water can not get into the exhaust gas recirculation and vice versa, but is discharged through the groove in case of leakage.
  • This safety groove is particularly easy to produce by milling, pouring or the like.
  • the outlet opening of the EGR valve is provided according to a further measure improving the invention outside the flange on the thermostatic valve housing to direct the recirculated exhaust gas at a suitable location directly from the thermostatic valve housing to the intake manifold of the internal combustion engine.
  • This outlet opening could in turn also be guided through the cylinder head, as already shown on the outlet side.
  • the thermostatic valve according to the invention is preferably produced by die-casting and consists of a light metal, in particular an aluminum alloy or the like.
  • a light metal in particular an aluminum alloy or the like.
  • any type of metal casting is used, even milled from the solid would be possible.
  • FIG. 1 is a cylinder head 1 of a - not shown - internal combustion engine, a thermostat valve housing 2 flanged.
  • the cooling water 3 flowing through the cylinder head 1 passes into the region of the thermostatic valve housing 2, where it is supplied either in accordance with the cooling water temperature - a small cooling water circuit or a large cooling water circuit - also not shown.
  • an EGR valve 4 of an exhaust gas recirculation device is further integrated (shown here only schematically).
  • an EGR passage 6 which partially passes through the cylinder head 1 and removes part of the exhaust gas produced by the combustion process from the exhaust manifold 5.
  • the flow of the exhaust gas recirculation device is controlled by the EGR valve 4 in a conventional manner. After passing through the EGR valve 4, the exhaust gas is supplied via a further EGR passage 7 to an intake manifold 8 of the internal combustion engine and thus to the fuel-air mixture.
  • the thermostatic valve shown here has a die-cast thermostatic valve housing 2 made of light metal, on which a flange surface 9 is provided for mounting on a - not shown - cylinder head of an internal combustion engine.
  • the operating unit of an integrated in the thermostatic valve body 2 EGR valve is provided with a cap 10 which is screwed to the thermostatic valve housing 2.
  • the cap 10 has an upper opening for the electrical connection of the actuator unit of the EGR valve.
  • a - not shown here - electrical line is from here with an electronic control unit of the engine management in conjunction.
  • the thermostatic valve housing 2 further has a connection 11 for the Heating flow on. Outside the flange surface 9, a cooling water outlet opening 12 for the cooling circuit and an outlet opening 13 for the recirculated exhaust gas of the exhaust gas recirculation device is further provided.
  • FIG. 3 is on the flange 9 of the thermostatic valve housing 2, an inlet opening 14 for the - not shown here - exhaust manifold of the internal combustion engine branched exhaust gas is provided, which is controlled via the integrated EGR valve, the outlet opening 13 is supplied.
  • On the flange 9 is still a cooling water inlet opening 15 of the cooling water circuit.
  • Another cooling water outlet opening 16 (bypass) for the small cooling water circuit is also provided on the flange 9 of the thermostatic valve housing 2.
  • Between the inlet opening 14 of the exhaust gas recirculation device and the cooling water inlet opening 15 and the cooling water outlet opening 16 extends transversely across the flange 9 a securing groove 17 which prevents cooling water enters the exhaust gas recirculation device and vice versa.
  • the thermostatic valve housing 2 houses a thermostatic valve mechanism 18 for switching the flow of cooling water between the cooling water inlet opening 15 and the cooling water outlet opening 16 or 12 of the small or large cooling water circuit.
  • the EGR valve 4 is disposed within a recess 19 of the thermostatic valve housing 2. Concretely, the thermostatic valve housing 2 accommodates the valve mechanism of the EGR valve 4, which switches the exhaust gas flow starting from the inlet opening 14, which is not recognizable here, to the outlet opening 13.

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)

Description

Die vorliegende Erfindung betrifft ein Thermostatventil eines Kühlwasserkreislaufs für einen Verbrennungsmotor mit einem Thermostatventilgehäuse, an dem zumindest eine Kühlwassereintrittsöffnung sowie eine Kühlwasseraustrittsöffnung für einen kleinen Kühlwasserkreislauf angeordnet ist, sowie eine Flanschfläche zur Montage an einen Zylinderkopf der Verbrennungskraftmaschine, und eine Kühlwasseraustrittsöffnung zur Weiterleitung des Kühlwassers an einen großen Kühlwasserkreislaufs nach Maßgabe der Kühlwassertemperatur, wobei das Thermostatventilgehäuse ferner mit einem AGR-Ventil einer Abgasrückführeinrichtung korrespondiert.The present invention relates to a thermostatic valve of a cooling water circuit for an internal combustion engine with a thermostatic valve housing to which at least one cooling water inlet opening and a cooling water outlet opening for a small cooling water circuit is arranged, and a flange for mounting to a cylinder head of the internal combustion engine, and a cooling water outlet opening for forwarding the cooling water to a large cooling water circuit in accordance with the cooling water temperature, wherein the thermostatic valve housing further corresponds to an EGR valve of an exhaust gas recirculation device.

Bei Otto- wie Dieselverbrennungsmotoren von Kraftfahrzeugen werden Abgasrückführeinrichtungen eingesetzt, um die Stickoxidemission zu verringern und einen geringeren Kraftstoffverbrauch zu erzielen, bei Dieselmotoren gilt dieses insbesondere auch für die Partikelbildung. Durch Zumischen von bereits verbranntem Abgas zum Luft-Kraftstoff-Gemisch wird die Verbrennungs-Spitzentemperatur gesenkt. Diese Maßnahme reduziert die sehr stark temperaturabhängige Stickoxidrohemission. Die Stickoxidbildungsreaktion ist exponential von der Verbrennungstemperatur abhängig. Durch Kühlung der Abgase wird eine Verbesserung der Zylinderfüllung erreicht. Das Abgas enthält kaum oder keine Sauerstoffmolekühle. Um den größeren Bedarf an Sauerstoff zu decken, wird eine größere Reinluftmenge benötigt. Im Teillastbereich mit weit geöffnete Drosselklappe und Luftüberschuss treten somit geringere Drosselverluste auf, wodurch ein geringerer Verbrauch erzielbar ist. Durch Zumischung von Abgas wird für eine gegebene Kraftstoffmenge die Drosselung der Reinluft stark verringert.In gasoline and diesel internal combustion engines of motor vehicles exhaust gas recirculation systems are used to reduce the nitrogen oxide emission and to achieve a lower fuel consumption, in diesel engines this applies in particular to the formation of particles. By mixing already combusted exhaust gas to the air-fuel mixture, the combustion peak temperature is lowered. This measure reduces the very strong temperature-dependent nitric oxide emissions. The nitrogen oxide formation reaction is exponentially dependent on the combustion temperature. By cooling the exhaust gases, an improvement of the cylinder filling is achieved. The exhaust gas contains little or no Oxygen molecules. To cover the greater demand for oxygen, a larger amount of clean air is needed. In the partial load range with wide open throttle and excess air thus lower throttle losses occur, whereby a lower consumption can be achieved. By adding exhaust gas throttling of the clean air is greatly reduced for a given amount of fuel.

Die Abgasrückführeinrichtung (AGR) ist gewöhnlich im Bereich des Zylinderkopfes eines Verbrennungsmotors zwischen dem Einlass- und dem Auslasskrümmer angeordnet, meist am Zylinderkopf in der Nähe des Kühlwasserkreislaufs für den Verbrennungsmotor.The exhaust gas recirculation (EGR) is usually located in the region of the cylinder head of an internal combustion engine between the intake and the exhaust manifold, usually on the cylinder head in the vicinity of the cooling water circuit for the internal combustion engine.

Aus der WO 2004/022940 A1 geht das Kühlwassersystem eines Verbrennungsmotors hervor. Das Kühlwassersystem besteht im Wesentlichen aus einem kleinen sowie einem großen Kühlwasserkreislauf. Im Kühlbetrieb des Verbrennungsmotors zirkuliert das Kühlwasser im großen und kleinen Kühlwasserkreislauf ausgehend vom Verbrennungsmotor über einen im Frontbereich des Fahrzeuges angeordneten Kühler, von welchem aus das abgekühlte Kühlwasser wieder dem Verbrennungsmotor zugeführt wird. Die Zirkulation wird über eine im Kühlwasserkreislauf eingeschaltete Pumpe erzielt. Insbesondere in der Startphase des Verbrennungsmotors zirkuliert das Kühlwasser innerhalb eines kleinen Kühlwasserkreislaufs, also nicht über den Kühler. Erst wenn die Kühlwassertemperatur einen festgelegten Wert_erreicht hat, schaltet ein Thermostatventil die Kühlwasserzirkulation des großen Kühlwasserkreislaufes zu. Daneben wird Kühlwasser auch zur Heizung des Fahrzeuginneren und zur Kühlung des durch die Abgasrückführeinrichtung strömenden Abgases verwendet.From the WO 2004/022940 A1 the cooling water system of an internal combustion engine emerges. The cooling water system consists essentially of a small and a large cooling water circuit. In the cooling mode of the internal combustion engine, the cooling water circulates in the large and small cooling water circuit starting from the internal combustion engine via a radiator arranged in the front region of the vehicle, from which the cooled cooling water is returned to the internal combustion engine. The circulation is achieved by means of a pump switched on in the cooling water circuit. In particular, in the starting phase of the internal combustion engine, the cooling water circulates within a small cooling water circuit, so not on the radiator. Only when the cooling water temperature has reached a fixed value_, a thermostatic valve switches on the cooling water circulation of the large cooling water circuit. In addition, cooling water is also used for heating the vehicle interior and for cooling the exhaust gas flowing through the exhaust gas recirculation device.

Die Abgasrückführeinrichtung ist mit Abweichungen je nach Bauart des Otto- oder Dieselmotors zwischen dem Auslasskrümmer und dem Einlasskrümmer des Verbrennungsmotors angeordnet. Das vom Auslasskrümmer entnommene Abgas wird ventilgesteuert dem Kraftstoff-Luft-Gemisch im Einlasskrümmer zugeführt. Das AGR-Ventil dient zur Steuerung des Durchflusses an Abgas und wird über verschiedene Parameter, wie bspw. Fahrpedalstellung, Motordrehzahl, Lufttemperatur, Luftdruck, Reinluftmassenstrom, usw. und bei genaueren Abstimmungen der AGR-Ventilposition gesteuert. Des Weiteren ist es erforderlich, zu stark erhitztes Abgas vor der Rückführung in den Einlasskrümmer auf ein erträgliches Maß abzukühlen, denn gekühltes Abgas verstärkt den Effekt der Emissionsverringerung. Hierfür wird bei diesem Stand der Technik ein AGR-Kühler verwendet, der mit dem großen Kühlwasserkreislauf des Verbrennungsmotors in Verbindung steht. Zur Verbindung von AGR-Ventil, AGR-Kühler und Thermostatventil des Kühlwasserkreislaufs sind entsprechende Rohrleitungen erforderlich. Hieraus resultiert der Nachteil eines entsprechenden Verrohrungsaufwandes bei der Montage der Abgasrückführeinrichtung und Verbindung derselben mit dem Kühlwasserkreislauf. The exhaust gas recirculation device is arranged with deviations depending on the design of the gasoline or diesel engine between the exhaust manifold and the intake manifold of the internal combustion engine. The exhaust gas taken from the exhaust manifold is valve controlled to the fuel-air mixture in the intake manifold. The EGR valve is used to control the flow of exhaust gas and is controlled by various parameters such as accelerator pedal position, engine speed, air temperature, air pressure, pure air mass flow, etc. and more accurate adjustments of the EGR valve position. Furthermore, it is necessary to cool excessively heated exhaust gas to a tolerable level before returning it to the intake manifold, because cooled exhaust gas enhances the effect of reducing emissions. For this purpose, in this prior art, an EGR cooler is used, which is in communication with the large cooling water circuit of the internal combustion engine. Appropriate piping is required to connect the EGR valve, EGR cooler and thermostat valve of the cooling water circuit. This results in the disadvantage of a corresponding Verrohrungsaufwandes in the assembly of the exhaust gas recirculation device and the same connection with the cooling water circuit.

Aus WO 01/12962 ist eine Motorkühleranordnung bekannt, die eine zentrale Öffnung zur Aufnahme eines zu kühlenden Generators aufweist. Die zentrale Öffnung ist von einem ringförmigen Kühlkanal umgeben, der an der einen Seite einen Einlass und an der gegenüberliegenden Seite einen Auslass aufweist. Beim Einlass ist ein Abgasrückführungsventil in einem Gehäuse vorgesehen. Beim Auslass ist ein Thermostatventil in einem Thermostatgehäuse vorgesehen. Das Thermostatgehäuse, die Wände des zentralen ringförmigen Kühlkanals sowie das dem Thermostatgehäuse gegenüberliegend angeordnete Gehäuse des Abgasrückführungsventils sind Teile eines gemeinsamen Kühlerüberführungskörpers.Out WO 01/12962 a motor radiator assembly is known which has a central opening for receiving a generator to be cooled. The central opening is surrounded by an annular cooling channel, which on one side a Inlet and on the opposite side has an outlet. At the inlet, an exhaust gas recirculation valve is provided in a housing. At the outlet, a thermostatic valve is provided in a thermostat housing. The thermostat housing, the walls of the central annular cooling channel and the housing of the exhaust gas recirculation valve disposed opposite the thermostat housing are parts of a common radiator transfer body.

Bereits eingeführte Konstruktionen zeigen bereits Gehäuse des AGR-Ventils in eine unmittelbare örtliche Nähe zum Gehäuse des Thermostatventils. Dennoch sind zusätzliche Schrauben zur Befestigung des AGR-Ventils am Thermostatventil und dazwischen angeordnete Dichtungen erforderlich. Der insgesamt vom Thermostatventil (mit angeschraubtem AGR-Ventil) beanspruchte Bauraum ist dennoch beträchtlich. Es ist daher die Aufgabe der vorliegenden Erfindung, ein Thermostatventil eines Kühlwasserkreislaufs zu schaffen, welches bauraumminimal mit einem AGR-Ventil korrespondiert und sich in einfacher Weise am Verbrennungsmotor montieren lässt.Already introduced constructions already show housing of the EGR valve in an immediate local proximity to the housing of the thermostatic valve. However, additional screws are required to secure the EGR valve to the thermostatic valve and gaskets between them. The overall space occupied by the thermostatic valve (with the EGR valve screwed on) is nevertheless considerable. It is therefore an object of the present invention to provide a thermostatic valve of a cooling water circuit, which corresponds minimal space with an EGR valve and can be mounted in a simple manner on the engine.

Die Aufgabe wird ausgehend von einem Thermostatventil gemäß dem Oberbegriff von Anspruch 1 in Verbindung mit dessen kennzeichnenden Merkmalen gelöst. Die nachfolgenden abhängigen Ansprüche geben vorteilhafte Weiterbildungen der Erfindung wieder.The object is achieved on the basis of a thermostatic valve according to the preamble of claim 1 in conjunction with its characterizing features. The following dependent claims give advantageous developments of the invention.

Die Erfindung schließt die technische Lehre ein, dass in das Thermostatventilgehäuse neben der Thermostatventilmechanik zusätzlich auch die Ventilmechanik des AGR-Ventils integriert ist, wobei das das Thermostatventilgehäuse durchströmende Kühlwasser zur Kühlung des das AGR-Ventil durchströmenden Abgases herangezogen wird.The invention includes the technical teaching that in addition to the thermostatic valve mechanism in addition, the valve mechanism of the EGR valve is integrated in the thermostatic valve housing, wherein the thermostatic valve housing flowing through cooling water is used to cool the exhaust gas flowing through the EGR valve.

Der Vorteil der erfindungsgemäßen Lösung liegt insbesondere darin, dass ein separates Gehäuse für das AGR-Ventil gänzlich entfällt und damit auch Dichtungen oder Rohrleitungen zur Verbindung zum Gehäuse des Thermostatventils hin entbehrlich sind. Ein entsprechend geringerer Montageaufwand fällt an. Durch die erfindungsgemäße Funktionsintegration einer Thermostatventilfunktion mit einer AGR-Ventilfunktion in ein einziges Gehäuse verringert sich die Bauraumgröße entsprechend. Bei der erfindungsgemäßen Funktionsintegration wird ein Synergieeffekt dadurch erzielt, dass das Kühlwasser, welches das Thermostatventilgehäuse durchströmt, gleichzeitig zur Kühlung des Abgases verwendet wird, welches das AGR-Ventil durchströmt. Der AGR-Kühler kann je nach Kühlungsbedarf entfallen.The advantage of the solution according to the invention lies in the fact that a separate housing for the EGR valve completely eliminated and thus also seals or pipes for connection to the housing of the thermostatic valve are dispensable. A correspondingly lower installation costs are incurred. The inventive functional integration of a thermostatic valve function with an EGR valve function in a single housing, the space size decreases accordingly. In the functional integration according to the invention a synergy effect is achieved in that the cooling water, which flows through the thermostatic valve housing, is used simultaneously for cooling the exhaust gas, which flows through the EGR valve. The EGR cooler can be omitted depending on the cooling requirements.

Vorzugsweise ist die Integration des AGR-Ventils im Thermostatventilgehäuse dergestalt ausgeführt, dass das Thermostatventilgehäuse einer Ausnehmung zur Aufnahme der Ventilmechanik des AGR-Ventils aufweist, die mit einer Abdeckkappe zur Abdeckung der Betätigungseinheit des AGR-Ventils verschlossen ist. Die zur Ventilmechanik des AGR-Ventils hinführenden und hiervon wegführenden Kanäle sind somit im Thermostatventilgehäuse ausgebildet und über die lösbar am Thermostatventilgehäuse vorgesehene Abdeckung ist zum Einen die Betätigungseinheit des AGR-Ventils zugänglich; zum Anderen ist an der Abdeckung der elektrische Abschluss für die Betätigungseinheit angeordnet.Preferably, the integration of the EGR valve in the thermostatic valve housing is designed such that the thermostatic valve housing has a recess for receiving the valve mechanism of the EGR valve, which is closed by a cover for covering the actuating unit of the EGR valve. The leading to the valve mechanism of the EGR valve and channels leading away therefrom are thus formed in the thermostatic valve housing and on the cover provided detachably on the thermostatic valve housing, on the one hand, the actuating unit of the EGR valve is accessible; On the other hand, the electrical termination for the actuator unit is arranged on the cover.

Zur Kühlung des das AGR-Ventil durchströmenden Abgases sind die mit dem AGR-Ventil in Verbindung stehenden gehäuseinternen AGR-Kanäle vorzugsweise benachbart zu den gehäuseinternen Kühlwasserkanälen im Thermostatventilgehäuse angeordnet. Durch die benachbarte Anordnung wird ein Wärmeaustausch zwischen dem heißen Abgas und dem Kühlwasser mit einem hinreichenden Wirkungsgrad erzielt. Zur Steigerung des Wirkungsgrades können die AGR-Kanäle auch zumindest teilweise innerhalb von Kühlwasserkanälen verlaufen, so dass diese vom Kühlwasser umspült werden.For cooling the exhaust gas flowing through the EGR valve, the EGR channels which are in communication with the EGR valve are preferably arranged adjacent to the housing-internal cooling water passages in the thermostatic valve housing. By the adjacent arrangement, a heat exchange between the hot exhaust gas and the cooling water is achieved with a sufficient efficiency. To increase the efficiency of the EGR channels can also run at least partially within cooling water channels, so that they are lapped by the cooling water.

Gemäß einer weiteren die Erfindung verbessernden Maßnahme ist vorgesehen, dass an der Flanschseite des Thermostatventilgehäuses, mit welcher das Thermostatventil am Zylinderkopf des Verbrennungsmotors befestigt wird, eine zumindest die Eintrittsöffnung des rückzuführenden Abgases von der Kühlwassereintritts- und Kühlwasseraustrittsöffnung abgetrennte, quer über die Flanschfläche verlaufende Sicherungsnut eingebracht ist. Hiermit wird eine strikte Trennung des Abgasrückführkreislaufes vom Kühlwasserkreislauf erreicht, so dass in Folge Undichtigkeit im Dichtungsbereich zwischen Zylinderkopf und Thermostatventil nicht Kühlwasser in die Abgasrückführung gelangen kann und umgekehrt, sondern bei Undichtigkeit über die Nut abgeführt wird. Diese Sicherungsnut ist fertigungstechnisch besonders einfach durch Fräsen, Eingießen oder dergleichen herstellbar.According to a further measure improving the invention, it is provided that on the flange side of the thermostatic valve housing, with which the thermostatic valve is attached to the cylinder head of the internal combustion engine, at least introduced the inlet opening of the recirculated exhaust gas from the cooling water inlet and cooling water outlet opening, extending transversely over the flange surface securing groove is. Hereby, a strict separation of the exhaust gas recirculation circuit is achieved by the cooling water circuit, so that leakage in the sealing area between the cylinder head and thermostatic valve cooling water can not get into the exhaust gas recirculation and vice versa, but is discharged through the groove in case of leakage. This safety groove is particularly easy to produce by milling, pouring or the like.

Die Austrittsöffnung des AGR-Ventils ist gemäß einer weiteren die Erfindung verbessernden Maßnahme außerhalb der Flanschfläche am Thermostatventilgehäuse vorgesehen, um an geeigneter Stelle das rückzuführende Abgas direkt vom Thermostatventilgehäuse zum Ansaugkrümmer des Verbrennungsmotors zu leiten. Diese Austrittsöffnung könnte wiederum auch wie bereits auf der Auslassseite gezeigt durch den Zylinderkopf geführt werden.The outlet opening of the EGR valve is provided according to a further measure improving the invention outside the flange on the thermostatic valve housing to direct the recirculated exhaust gas at a suitable location directly from the thermostatic valve housing to the intake manifold of the internal combustion engine. This outlet opening could in turn also be guided through the cylinder head, as already shown on the outlet side.

Das erfindungsgemäße Thermostatventil ist vorzugsweise im Druckgussverfahren hergestellt und besteht aus einem Leichtmetall, insbesondere einer Aluminiumlegierung oder dergleichen. Daneben wäre es auch denkbar, dass jede Art von Metallguss verwendet wird, sogar aus dem Vollem gefräst wäre möglich.The thermostatic valve according to the invention is preferably produced by die-casting and consists of a light metal, in particular an aluminum alloy or the like. In addition, it would also be conceivable that any type of metal casting is used, even milled from the solid would be possible.

Weitere die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung anhand der Figuren näher dargestellt. Es zeigt:

Fig. 1
eine schematische Darstellung desjenigen Bereichs am Zylinderkopf des Verbrennungsmotors, an welchem ein Thermostatventil angeordnet ist,
Fig. 2
eine perspektivische Außenansicht eines Thermostatventils mit integriertem AGR-Ventil,
Fig. 3
eine weitere Außenansicht des Thermostatventils nach Figur 2, und
Fig. 4
eine teilweise Schnittdarstellung des Thermostatventils nach Figur 2.
Further measures improving the invention will be described in more detail below together with the description of a preferred embodiment of the invention with reference to FIGS. It shows:
Fig. 1
a schematic representation of that area on the cylinder head of the internal combustion engine, on which a thermostatic valve is arranged,
Fig. 2
an external perspective view of a thermostatic valve with integrated EGR valve,
Fig. 3
another outside view of the thermostatic valve after FIG. 2 , and
Fig. 4
a partial sectional view of the thermostatic valve after FIG. 2 ,

Gemäß Figur 1 ist an einem Zylinderkopf 1 eines - nicht weiter dargestellten - Verbrennungsmotors ein Thermostatventilgehäuse 2 angeflanscht. Das den Zylinderkopf 1 durchströmende Kühlwasser 3 gelangt in den Bereich des Thermostatventilgehäuses 2, wo es nach Maßgabe der Kühlwassertemperatur entweder einen - ebenfalls nicht weiter dargestellten - kleinen Kühlwasserkreislauf oder einen großen Kühlwasserkreislauf zugeführt wird. Im Thermostatventilgehäuse 2 ist weiterhin ein AGR-Ventil 4 einer Abgasrückführeinrichtung integriert (hier nur schematisch dargestellt). Zu dem AGR-Ventil 4 führt ausgehend von einem Auslasskrümmer 5 des Verbrennungsmotors ein AGR-Kanal 6, der teilweise durch den Zylinderkopf 1 verläuft und einen Teil des durch den Verbrennungsprozess entstehenden Abgases aus dem Auslasskrümmer 5 entnimmt. Der Durchfluss der Abgasrückführeinrichtung wird durch das AGR-Ventil 4 in an sich bekannter Weise gesteuert. Nach Passieren des AGR-Ventils 4 wird das Abgas über einen weiteren AGR-Kanal 7 einem Einlasskrümmer 8 des Verbrennungsmotors und damit dem Kraftstoff-Luft-Gemisch zugeführt.According to FIG. 1 is a cylinder head 1 of a - not shown - internal combustion engine, a thermostat valve housing 2 flanged. The cooling water 3 flowing through the cylinder head 1 passes into the region of the thermostatic valve housing 2, where it is supplied either in accordance with the cooling water temperature - a small cooling water circuit or a large cooling water circuit - also not shown. In the thermostatic valve housing 2, an EGR valve 4 of an exhaust gas recirculation device is further integrated (shown here only schematically). To the EGR valve 4, starting from an exhaust manifold 5 of the internal combustion engine, an EGR passage 6 which partially passes through the cylinder head 1 and removes part of the exhaust gas produced by the combustion process from the exhaust manifold 5. The flow of the exhaust gas recirculation device is controlled by the EGR valve 4 in a conventional manner. After passing through the EGR valve 4, the exhaust gas is supplied via a further EGR passage 7 to an intake manifold 8 of the internal combustion engine and thus to the fuel-air mixture.

Gemäß Fig. 2 weist das hier dargestellte Thermostatventil ein druckgegossenes Thermostatventilgehäuse 2 aus Leichtmetall auf, an dem eine Flanschfläche 9 zur Montage an einen - nicht weiter dargestellten - Zylinderkopf eines Verbrennungsmotors vorgesehen ist. Die Betätigungseinheit eines in dem Thermostatventilgehäuse 2 integrierten AGR-Ventils ist mit einer Abdeckkappe 10 versehen, welche an das Thermostatventilgehäuse 2 angeschraubt ist. Die Abdeckkappe 10 weist eine obere Öffnung für den elektrischen Anschluss der Betätigungseinheit des AGR-Ventils auf. Eine - hier nicht weiter dargestellte - elektrische Leitung steht von hier aus mit einer elektronischen Steuereinheit des Motormanagements in Verbindung. Das Thermostatventilgehäuse 2 weist weiterhin einen Anschluss 11 für den Heizungsvorlauf auf. Außerhalb der Flanschfläche 9 ist weiterhin eine Kühlwasseraustrittsöffnung 12 für den Kühlkreislauf sowie eine Austrittsöffnung 13 für das rückzuführende Abgas der Abgasrückführeinrichtung vorgesehen.According to Fig. 2 The thermostatic valve shown here has a die-cast thermostatic valve housing 2 made of light metal, on which a flange surface 9 is provided for mounting on a - not shown - cylinder head of an internal combustion engine. The operating unit of an integrated in the thermostatic valve body 2 EGR valve is provided with a cap 10 which is screwed to the thermostatic valve housing 2. The cap 10 has an upper opening for the electrical connection of the actuator unit of the EGR valve. A - not shown here - electrical line is from here with an electronic control unit of the engine management in conjunction. The thermostatic valve housing 2 further has a connection 11 for the Heating flow on. Outside the flange surface 9, a cooling water outlet opening 12 for the cooling circuit and an outlet opening 13 for the recirculated exhaust gas of the exhaust gas recirculation device is further provided.

Gemäß Fig.3 ist an der Flanschfläche 9 des Thermostatventilgehäuses 2 eine Eintrittsöffnung 14 für das vom - hier nicht weiter dargestellten - Auslasskrümmer des Verbrennungsmotors abgezweigten Abgases vorgesehen, das über das integrierte AGR-Ventil gesteuert der Austrittsöffnung 13 zugeführt wird. An der Flanschfläche 9 befindet sich weiterhin eine Kühlwassereintrittsöffnung 15 des Kühlwasserkreislaufes. Eine weitere Kühlwasseraustrittsöffnung 16 (Bypass) für den kleinen Kühlwasserkreislauf ist ebenfalls an der Flanschfläche 9 des Thermostatventilgehäuses 2 vorgesehen. Zwischen der Eintrittsöffnung 14 der Abgasrückführeinrichtung sowie der Kühlwassereintrittsöffnung 15 und der Kühlwasseraustrittsöffnung 16 verläuft quer über die Flanschfläche 9 eine Sicherungsnut 17, die verhindert, dass Kühlwasser in die Abgasrückführeinrichtung gelangt und umgekehrt.According to Figure 3 is on the flange 9 of the thermostatic valve housing 2, an inlet opening 14 for the - not shown here - exhaust manifold of the internal combustion engine branched exhaust gas is provided, which is controlled via the integrated EGR valve, the outlet opening 13 is supplied. On the flange 9 is still a cooling water inlet opening 15 of the cooling water circuit. Another cooling water outlet opening 16 (bypass) for the small cooling water circuit is also provided on the flange 9 of the thermostatic valve housing 2. Between the inlet opening 14 of the exhaust gas recirculation device and the cooling water inlet opening 15 and the cooling water outlet opening 16 extends transversely across the flange 9 a securing groove 17 which prevents cooling water enters the exhaust gas recirculation device and vice versa.

Nach Fig.4 beherbergt das Thermostatventilgehäuse 2 eine Thermostatventilmechanik 18 zum Schalten des Kühlwasserflusses zwischen der Kühlwassereintrittsöffnung 15 und der Kühlwasseraustrittsöffnung 16 oder 12 des kleinen bzw. großen Kühlwasserkreislaufs. Das AGR-Ventil 4 ist innerhalb einer Ausnehmung 19 des Thermostatventilgehäuses 2 angeordnet. Das Thermostatventilgehäuse 2 beherbergt konkret die Ventilmechanik des AGR-Ventils 4, welche den Abgasstrom ausgehend von der - hier nicht erkennbaren - Eintrittsöffnung 14 zur Austrittsöffnung 13 schaltet.To Figure 4 the thermostatic valve housing 2 houses a thermostatic valve mechanism 18 for switching the flow of cooling water between the cooling water inlet opening 15 and the cooling water outlet opening 16 or 12 of the small or large cooling water circuit. The EGR valve 4 is disposed within a recess 19 of the thermostatic valve housing 2. Concretely, the thermostatic valve housing 2 accommodates the valve mechanism of the EGR valve 4, which switches the exhaust gas flow starting from the inlet opening 14, which is not recognizable here, to the outlet opening 13.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Zylinderkopfcylinder head
22
ThermostatventilgehäuseThermostatic valve housing
33
Kühlwassercooling water
44
AGR-VentilAGR valve
55
Auslasskrümmerexhaust manifold
66
AGR-Kanal (Abnahme)EGR channel (acceptance)
77
AGR-Kanal (Zugabe)EGR channel (addition)
88th
Einlasskrümmerintake manifold
99
Flanschflächeflange
1010
Abdeckkappecap
1111
Anschluss (Kühlwasser zur Heizung)Connection (cooling water to the heater)
1212
KühlwasseraustrittsöffnungCooling water outlet
1313
Austrittsöffnungoutlet opening
1414
Eintrittsöffnunginlet opening
1515
KühlwassereintrittsöffnungCooling water inlet opening
1616
KühlwasseraustrittsöffnungCooling water outlet
1717
Sicherungsnutsecuring groove
1818
ThermostatventilmechanikThermostatic valve mechanism
1919
Ausnehmungrecess

Claims (6)

  1. A thermostatic valve of a cooling-water circuit for an internal combustion engine, comprising a thermostatic valve housing (2) on which at least one cooling-water inlet opening (15) and a cooling-water outlet opening (16) for a small cooling-water circuit are arranged, and a flange surface (9) for mounting on a cylinder head (1) of the internal combustion engine, and a cooling-water outlet opening (12) for transferring the cooling water to a large cooling-water circuit depending on the cooling-water temperature, with the thermostatic valve housing (2) further corresponding with an EGR valve (4) of an exhaust gas recirculation device, characterized in that the valve mechanism of the EGR valve (4) is additionally also integrated in the thermostatic valve housing (2) in addition to the thermostatic valve mechanism (18), with the cooling water flowing through the thermostatic valve housing (2) simultaneously being used for cooling the exhaust gas flowing through the EGR valve (4).
  2. A thermostatic valve according to claim 1, characterized in that the thermostatic valve housing (2) comprises a recess (19) for accommodating the valve mechanism of the EGR valve (4), which valve mechanism is sealed with a cover (10) for covering the actuating unit of the EGR valve (4).
  3. A thermostatic valve according to claim 1, characterized in that for cooling the exhaust gas flowing through the EGR valve (4) the housing-internal EGR ports which are in connection with the EGR valve (4) extend adjacent to the housing-internal cooling water ports in the thermostatic valve housing (2).
  4. A thermostatic valve according to one of the preceding claims, characterized in that a securing groove (17) which separates the entrance opening (14) of the exhaust gas to be recirculated from the cooling-water inlet and cooling-water outlet opening (15, 16) and extends transversely over the flange surface (19) is introduced in the flange surface (9) of the thermostatic valve housing (2).
  5. A thermostatic valve according to one of the preceding claims, characterized in that an outlet opening (13) of the EGR valve (4) is provided outside of the flange surface (9) on the thermostatic valve housing (2) in order to guide the exhaust gas to be recirculated to the intake manifold (8) of the internal combustion engine.
  6. A thermostatic valve according to one of the preceding claims, characterized in that the thermostatic valve housing (2) consists of light metal and is produced by die-casting.
EP06003871.8A 2005-03-19 2006-02-25 Thermostatic valve with integrated exhaust gas recirculation valve Not-in-force EP1703115B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005012759A DE102005012759A1 (en) 2005-03-19 2005-03-19 Thermostatic valve with integrated EGR valve

Publications (2)

Publication Number Publication Date
EP1703115A1 EP1703115A1 (en) 2006-09-20
EP1703115B1 true EP1703115B1 (en) 2013-04-10

Family

ID=36337372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06003871.8A Not-in-force EP1703115B1 (en) 2005-03-19 2006-02-25 Thermostatic valve with integrated exhaust gas recirculation valve

Country Status (2)

Country Link
EP (1) EP1703115B1 (en)
DE (1) DE102005012759A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007049336B4 (en) * 2007-10-12 2019-09-05 Mahle International Gmbh Multifunctional module for mounting on an internal combustion engine and for guiding fluids
FR3005608B1 (en) * 2013-05-17 2016-10-14 Renault Sa ORGAN SUPPORT FOR VEHICLE ENGINE, CORRESPONDING FLUID CONNECTION SYSTEM AND MOTOR VEHICLE
FR3030637B1 (en) * 2014-12-22 2018-02-16 Valeo Systemes De Controle Moteur POWER SUPPLY MODULE FOR A COMBUSTION ENGINE HAVING A COOLING CHANNEL
FR3063772B1 (en) * 2017-03-08 2021-12-03 Renault Sas HP EGR EXCHANGER INTERFACE FOR THERMAL ENGINE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666930A (en) * 1996-04-18 1997-09-16 General Motors Corporation Structural throttle body mount
DE19750588B4 (en) * 1997-11-17 2016-10-13 MAHLE Behr GmbH & Co. KG Device for exhaust gas recirculation for an internal combustion engine
WO2001012962A1 (en) * 1999-08-16 2001-02-22 Delphi Technologies, Inc. Engine coolant crossover assembly
JP3852255B2 (en) * 1999-11-10 2006-11-29 いすゞ自動車株式会社 EGR and oil cooling device
ATE431498T1 (en) * 2002-05-15 2009-05-15 Behr Gmbh & Co Kg SWITCHABLE EXHAUST GAS HEAT EXCHANGER
GB0220480D0 (en) 2002-09-04 2002-10-09 Ford Global Tech Inc A motor vehicle and a thermostatically controlled valve therefor

Also Published As

Publication number Publication date
EP1703115A1 (en) 2006-09-20
DE102005012759A1 (en) 2006-10-12

Similar Documents

Publication Publication Date Title
EP1660771B1 (en) Air-intake duct system for a combustion engine
EP2527614B1 (en) Intake pipe for a combustion engine
EP2018472B1 (en) Valve arrangement for an exhaust gas recirculation device
DE10025500B4 (en) Internal combustion engine with cooling circuit and a connected to this heat exchanger
EP2161430B1 (en) Charge-air cooler with condensation drain
DE60120647T2 (en) TURBOLADER WITH INTEGRATED EXHAUST GAS RECYCLING VALVE
EP2175221B1 (en) Cooling device
EP1291509B1 (en) Valve assembly having an internal bypass flow
EP2077388B1 (en) Combination with cylinder head and cylinder block and usage of such a combination
DE102006000348A1 (en) Gas recirculation device
DE102009001530A1 (en) exhaust switching valve
EP1857761B1 (en) Heat exchange device for combustion engines
DE102010002233A1 (en) Device for exhaust gas recirculation for an internal combustion engine
DE102007053126A1 (en) Internal combustion engine with cooled exhaust gas recirculation and exhaust manifold
DE60310539T2 (en) exhaust manifold
EP1703115B1 (en) Thermostatic valve with integrated exhaust gas recirculation valve
DE102010033125A1 (en) Heat exchanger device for use as e.g. intercooler for combustion engine of motor car, has bypass valve arranged in inlet region or exhaust region and connected with heat exchanger region that is connected with exhaust region
DE102006047518B4 (en) Internal combustion engine with a water cooling system which is connected to a shut-off device or a throttle with a surge tank
EP1746263B1 (en) Valve system for a heat exchanger
DE102006054225B4 (en) Exhaust gas recirculation device
WO2008046490A1 (en) Cooling circuit for an internal combustion engine
EP1727976B1 (en) Internal combustion engine having a humidifying device and a heat exchanger
EP2987994B1 (en) Motor inlet air distributor unit with a housing and an actuator
DE102008060224B4 (en) Oil exhaust cooling module for an internal combustion engine
DE10344217A1 (en) Fresh gas-guiding section of a fresh gas system for an internal combustion engine, especially in a motor vehicle, comprises a lateral inlet opening for recirculated exhaust gas from an exhaust gas recirculation unit of the engine

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: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20070119

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 606151

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130415

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502006012691

Country of ref document: DE

Effective date: 20130606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20130410

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130721

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130810

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130812

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130711

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130710

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

26N No opposition filed

Effective date: 20140113

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006012691

Country of ref document: DE

Effective date: 20140113

BERE Be: lapsed

Owner name: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Effective date: 20140228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140225

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140228

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140225

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140228

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 606151

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140225

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20060225

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130410

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20170112

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20170222

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180214

Year of fee payment: 13

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180225

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20181031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180228

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180225

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006012691

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190903