EP3575613A1 - Combustion engine with multistage suction jet pump - Google Patents

Combustion engine with multistage suction jet pump Download PDF

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Publication number
EP3575613A1
EP3575613A1 EP19186332.3A EP19186332A EP3575613A1 EP 3575613 A1 EP3575613 A1 EP 3575613A1 EP 19186332 A EP19186332 A EP 19186332A EP 3575613 A1 EP3575613 A1 EP 3575613A1
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EP
European Patent Office
Prior art keywords
jet pump
suction jet
combustion engine
internal combustion
crankcase
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EP19186332.3A
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German (de)
French (fr)
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EP3575613B1 (en
Inventor
Jorge Soares
Christian Berding
Hans Janssen
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Polytec Plastics Germany GmbH and Co KG
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Polytec Plastics Germany GmbH and Co KG
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
    • F04F5/22—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating of multi-stage type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M2013/026—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure with pumps sucking air or blow-by gases from the crankcase
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M2013/027—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure with a turbo charger or compressor

Definitions

  • the present invention is a multi-stage suction jet pump for sucking blow-by gases from internal combustion engines.
  • active pumps for internal combustion engines are in use, which actively suck off blow-by gases, for example, via vacuum pumps or impeller pumps.
  • ejector pumps use only a small portion of the energy, which is supplied in the form of compressed air from the charged area behind turbocharger.
  • the object of the present invention is to lower the negative pressure in the engine or to compensate for the pressure increase caused by an oil separator.
  • a suction jet pump 7 for the venting of an internal combustion engine with a turbocharger 3 between an air filter 1 and a crankcase 4, which is characterized in that a charge air path 5 has a branch to an at least two-stage suction jet pump 7 wherein the inlet of the suction jet pump 7 is connected via the engine breather 6 to the crankcase 4 and the outlet of the suction jet pump 7 for blow-by gas recirculation 9 with the intake 2 between the air filter 1 and the turbocharger 3.
  • Multi-stage suction jet pumps 7 are particularly suitable for the present purpose, since here the absence of moving parts can expect a wear-free pump 7.
  • the multi-stage pump 7 acts by a propulsion jet (eg compressed air from the charged suction pipe) is pressed through a small nozzle and the jet entrains gas at its periphery. After the first stage, the volume flow increased by the supply air is then replaced by a second larger and a third even larger nozzle flows through, in turn, a gas component is pulled along.
  • a propulsion jet eg compressed air from the charged suction pipe
  • each nozzle of the propellant jet takes a share of the gas to be pumped (blow-by gas). Due to the multi-stage, the delivered volume flow is significantly larger (factor 2, 3 or more) than with a single-stage suction jet pump. The more the better.
  • suction jet pump 7 A fundamental disadvantage of the suction jet pump 7 is that it also generates a pressure loss when forced through delivery. Due to the multi-stage creates a sharply adjusted pump 7, which has no propulsion jet in the event that the internal combustion engine in the uncharged operation.
  • the blow-by gas would have to be pushed through the small nozzles, creating a pressure drop that is undesirable.
  • This pressure loss is not negligible with an optimally designed multi-stage suction jet pump 7 (depending on the volume flow 5 to 100 mbar). Since this disadvantage exceeds the benefits of the suction jet pump 7 under certain circumstances, according to the invention for this application in a preferred embodiment, at least one bypass valve 8 and / or a check valve 8 is provided, which in the case that the suction jet pump 7 does not apply a propulsion jet, the blow-by -Gas past the pump 7 passes and thus minimizes the pressure loss for this case.
  • FIG. 1 a preferred embodiment of the present invention is shown.
  • the blow-by gas is supplied via the turbocharger 3 and the charge air path 5 to the crankcase 4.
  • the charge air path 5 has a branch, which opens into a multi-stage suction jet pump 7.
  • the engine breather 6 represents a further connection between the crankcase 4 and the suction jet pump 7.
  • a further branch of the engine breather 6 leads in the particularly preferred embodiment to a bypass valve 8 and / or a check valve 8, which controls the gas flow with a small or nonexistent propulsion jet in the suction jet pump 7 via the blow-by gas recirculation 9 to the intake 2 between the air filter 1 and the turbocharger 3 returns.
  • valve 8 When the engine is operating in turbo mode, the valve 8 is closed due to the higher pressure downstream of the suction jet pump 7. If the engine is operating in uncharged mode, the blow-by gas can flow past the pump 7 without any pressure loss.
  • a preferred embodiment of the present invention is shown in which the jet pump 7 is inserted in a cylinder head cover.
  • the pump 7 is preferably made of plastic, for example polyamide. In this case, parts of the pump can also be depicted in the cylinder head cover 10.
  • the suction jet pump 7 can also be integrated in a cylinder head cover 10.
  • the entire component can be made as a module of suction jet pump 7 with the bypass valve 8 and / or the check valve 8 with hose connections.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Supercharger (AREA)

Abstract

Gegenstand der vorliegenden Erfindung ist eine mehrstufige Saugstrahlpumpe zum Absaugen von Blow- By- Gasen aus Verbrennungsmotoren.The present invention relates to a multi-stage suction jet pump for extracting blow-by gases from internal combustion engines.

Description

Gegenstand der vorliegenden Erfindung ist eine mehrstufige Saugstrahlpumpe zum Absaugen von Blow- By- Gasen aus Verbrennungsmotoren.The present invention is a multi-stage suction jet pump for sucking blow-by gases from internal combustion engines.

Um den Unterdruck im Motor abzusenken oder den durch einen Ölabscheider verursachten Druckanstieg auszugleichen sind aktive Pumpen für Verbrennungsmotoren im Einsatz, die beispielsweise über Vakuumpumpen oder Flügelradpumpen Blow- By-Gase aktiv absaugen.In order to reduce the negative pressure in the engine or to compensate for the increase in pressure caused by an oil separator, active pumps for internal combustion engines are in use, which actively suck off blow-by gases, for example, via vacuum pumps or impeller pumps.

Der Nachteil von Saugstrahlpumpen ist der verhältnismäßig schlechte Wirkungsgrad. Diese Pumpen nutzen nur einen kleinen Teil der Energie aus, die in Form von Druckluft aus dem aufgeladenen Bereich hinter Turbolader zugeführt wird.The disadvantage of ejector pumps is the relatively poor efficiency. These pumps use only a small portion of the energy, which is supplied in the form of compressed air from the charged area behind turbocharger.

DE 10 2013 203 942 A1 beschreibt eine Saugstrahlpumpe mit einer Treibmittelleitung, einer Treibstrahldüse, einem Ansaugbereich, einem Mischrohr und einem Diffusor, wobei die Treibstrahldüse und das Mischrohr zueinander geradlinig ausgerichtet sind. In Strömungsrichtung gesehen weist der Diffusor einen vom Verlauf des Mischrohres abweichenden Verlauf auf. DE 10 2013 203 942 A1 describes a suction jet pump with a Treibmittelleitung, a Treibstrahldüse, a suction, a mixing tube and a diffuser, wherein the propulsion jet nozzle and the mixing tube are aligned with each other in a straight line. Viewed in the flow direction, the diffuser has a deviating from the course of the mixing tube course.

In DE 20 2006 001 287 U1 ist als Pumpe eine Saugstrahlpumpe vorgesehen, die in Kombination mit einem Druckregelventil den Unterdruck für die Entlüftung einer Brennkraftmaschine regelt.In DE 20 2006 001 287 U1 is provided as a suction pump pump, which regulates the negative pressure for the venting of an internal combustion engine in combination with a pressure control valve.

Als Verbesserung der Funktion ist für eine Kraftstoffpumpe in DE 44 00 958 C1 eine mehrstufige Saugstrahlpumpe aufgeführt. Durch die Mehrstufigkeit (2-stufig, 3-stufig, 4-stufig,...) der Saugstrahlpumpe kann der Wirkungsgrad der Pumpe deutlich erhöht werden. Hier wird eine Flüssigkeit gefördert.As an improvement of the function is for a fuel pump in DE 44 00 958 C1 listed a multi-stage suction jet pump. Due to the multi-stage (2-stage, 3-stage, 4-stage, ...) of the suction jet pump, the efficiency of the pump can be significantly increased. Here a liquid is conveyed.

Die Aufgabe der vorliegenden Erfindung besteht darin, den Unterdruck im Motor abzusenken oder den durch einen Ölabscheider verursachten Druckanstieg auszugleichen.The object of the present invention is to lower the negative pressure in the engine or to compensate for the pressure increase caused by an oil separator.

Die vorgenannte Aufgabe wird erfindungsgemäß in einer ersten Ausführungsform gelöst durch eine Saugstrahlpumpe 7 für die Entlüftung einer Brennkraftmaschine mit einem Turbolader 3 zwischen einem Luftfilter 1 und einem Kurbelgehäuse 4, die dadurch gekennzeichnet ist, dass eine Ladeluftstrecke 5 einen Abzweig zu einer wenigstens zweistufigen Saugstrahlpumpe 7 aufweist, wobei der Eingang der Saugstrahlpumpe 7 über die Motorentlüftung 6 mit dem Kurbelgehäuse 4 und der Auslass der Saugstrahlpumpe 7 zur Blow-By-Gas-Rückführung 9 mit der Ansaugstrecke 2 zwischen Luftfilter 1 und dem Turbolader 3 verbunden ist.The above object is achieved in a first embodiment by a suction jet pump 7 for the venting of an internal combustion engine with a turbocharger 3 between an air filter 1 and a crankcase 4, which is characterized in that a charge air path 5 has a branch to an at least two-stage suction jet pump 7 wherein the inlet of the suction jet pump 7 is connected via the engine breather 6 to the crankcase 4 and the outlet of the suction jet pump 7 for blow-by gas recirculation 9 with the intake 2 between the air filter 1 and the turbocharger 3.

Mehrstufige Saugstrahlpumpen 7 sind für den vorliegenden Zweck besonders geeignet, da hier die Abwesenheit von beweglichen Teilen eine verschleißfreie Pumpe 7 erwarten lässt.Multi-stage suction jet pumps 7 are particularly suitable for the present purpose, since here the absence of moving parts can expect a wear-free pump 7.

Die mehrstufige Pumpe 7 wirkt, indem ein Treibstrahl (z.B. Druckluft aus dem aufgeladenen Saugrohr) durch eine kleine Düse gedrückt wird und der Strahl an seinem Umfang Gas mitreißt. Nach der ersten Stufe wird der durch die Zuluft erhöhte Volumenstrom anschließend durch eine zweite größere und eine dritte noch größere Düse durchströmt, wobei wiederum ein Gasanteil mitgezogen wird.The multi-stage pump 7 acts by a propulsion jet (eg compressed air from the charged suction pipe) is pressed through a small nozzle and the jet entrains gas at its periphery. After the first stage, the volume flow increased by the supply air is then replaced by a second larger and a third even larger nozzle flows through, in turn, a gas component is pulled along.

An jeder Düse nimmt der Treibstrahl einen Anteil des zu fördernden Gases (Blow-By-Gas) mit. Durch die Mehrstufigkeit wird der geförderte Volumenstrom deutlich größer (Faktor 2, 3 oder mehr) als bei einer einstufigen Saugstrahlpumpe. Je mehr, desto besser.At each nozzle of the propellant jet takes a share of the gas to be pumped (blow-by gas). Due to the multi-stage, the delivered volume flow is significantly larger (factor 2, 3 or more) than with a single-stage suction jet pump. The more the better.

Durch diesen verbesserten Wirkungsgrad kann der geförderte Volumenstrom wie auch der durch den Treibstrahl erzeugte Druckanstieg verbessert werden.Due to this improved efficiency of the delivered volume flow as well as the pressure increase generated by the propulsion jet can be improved.

Ein grundsätzlicher Nachteil der Saugstrahlpumpe 7 ist, dass diese bei Zwangsdurchförderung auch einen Druckverlust erzeugt. Durch die Mehrstufigkeit entsteht eine scharf eingestellte Pumpe 7, die für den Fall dass der Verbrennungsmotor im nicht aufgeladenen Betrieb arbeitet keinen Treibstrahl hat.A fundamental disadvantage of the suction jet pump 7 is that it also generates a pressure loss when forced through delivery. Due to the multi-stage creates a sharply adjusted pump 7, which has no propulsion jet in the event that the internal combustion engine in the uncharged operation.

In diesem Fall müsste das Blow-By-Gas durch die kleinen Düsen gedrückt werden und erzeugt dabei einen Druckverlust, der nicht erwünscht ist. Dieser Druckverlust ist bei einer optimal ausgelegten mehrstufigen Saugstrahlpumpe 7 nicht unerheblich (je nach Volumenstrom 5 bis 100 mbar). Da dieser Nachteil den Nutzen der Saugstrahlpumpe 7 unter Umständen übersteigt, ist erfindungsgemäß für diese Anwendung in einer bevorzugten Ausführungsform wenigstens ein Bypassventil 8 und/ oder ein Rückschlagventil 8 vorgesehen, welches in dem Fall, dass die Saugstrahlpumpe 7 keinen Treibstrahl aufbringt, das Blow-By-Gas an der Pumpe 7 vorbei leitet und damit den Druckverlust für diesen Fall minimiert.In this case, the blow-by gas would have to be pushed through the small nozzles, creating a pressure drop that is undesirable. This pressure loss is not negligible with an optimally designed multi-stage suction jet pump 7 (depending on the volume flow 5 to 100 mbar). Since this disadvantage exceeds the benefits of the suction jet pump 7 under certain circumstances, according to the invention for this application in a preferred embodiment, at least one bypass valve 8 and / or a check valve 8 is provided, which in the case that the suction jet pump 7 does not apply a propulsion jet, the blow-by -Gas past the pump 7 passes and thus minimizes the pressure loss for this case.

In der Figur 1 wird eine bevorzugte Ausführungsform der vorliegenden Erfindung dargestellt. Ausgehend von einem Luftfilter 1 wird das Blow-By-Gas über den Turbolader 3 und die Ladeluftstrecke 5 dem Kurbelgehäuse 4 zugeführt. Die Ladeluftstrecke 5 weist einen Abzweig auf, der in eine mehrstufige Saugstrahlpumpe 7 mündet. Die Motorentlüftung 6 stellt eine weitere Verbindung zwischen dem Kurbelgehäuse 4 und der Saugstrahlpumpe 7 dar. Ein weiterer Abzweig der Motorentlüftung 6 führt in der hier besonders bevorzugten Ausführungsform zu einem Bypassventil 8 und/ oder einem Rückschlagventil 8, das den Gasstrom bei geringem oder nicht vorhandenem Treibstrahl in der Saugstrahlpumpe 7 über die Blow-By-Gasrückführung 9 zur Ansaugstrecke 2 zwischen dem Luftfilter 1 und dem Turbolader 3 zurückführt.In the FIG. 1 a preferred embodiment of the present invention is shown. Starting from an air filter 1, the blow-by gas is supplied via the turbocharger 3 and the charge air path 5 to the crankcase 4. The charge air path 5 has a branch, which opens into a multi-stage suction jet pump 7. The engine breather 6 represents a further connection between the crankcase 4 and the suction jet pump 7. A further branch of the engine breather 6 leads in the particularly preferred embodiment to a bypass valve 8 and / or a check valve 8, which controls the gas flow with a small or nonexistent propulsion jet in the suction jet pump 7 via the blow-by gas recirculation 9 to the intake 2 between the air filter 1 and the turbocharger 3 returns.

Wenn der Motor im Turbobetrieb arbeitet, ist durch den höheren Druck in Strömungsrichtung hinter der Saugstrahlpumpe 7 das Ventil 8 geschlossen. Arbeitet der Motor im nicht aufgeladenen Betrieb, so kann das Blow-By-Gas ohne Druckverlust an der Pumpe 7 vorbeiströmen.When the engine is operating in turbo mode, the valve 8 is closed due to the higher pressure downstream of the suction jet pump 7. If the engine is operating in uncharged mode, the blow-by gas can flow past the pump 7 without any pressure loss.

Damit wird durch Kombination der Saugstrahlpumpe 7 mit dem Bypassventil 8 und/ oder dem Rückschlagventil 8 dieser Betriebszustand optimiert.This is optimized by combining the suction jet pump 7 with the bypass valve 8 and / or the check valve 8, this operating condition.

In der Fig. 2 wird eine bevorzugte Ausführungsform der vorliegenden Erfindung dargestellt, bei der die Strahlpumpe 7 in eine Zylinderkopfhaube eingefügt ist.In the Fig. 2 a preferred embodiment of the present invention is shown in which the jet pump 7 is inserted in a cylinder head cover.

Die Pumpe 7 wird vorzugsweise aus Kunststoff, beispielsweise Polyamid hergestellt. Dabei können Teile der Pumpe auch in der Zylinderkopfhaube 10 abgebildet sein.The pump 7 is preferably made of plastic, for example polyamide. In this case, parts of the pump can also be depicted in the cylinder head cover 10.

In einer weiteren Ausführungsform der vorliegenden Erfindung kann die Saugstrahlpumpe 7 auch in eine Zylinderkopfhaube 10 integriert sein.In a further embodiment of the present invention, the suction jet pump 7 can also be integrated in a cylinder head cover 10.

Alternativ hierzu können auch das komplette Bauteil als Modul aus Saugstrahlpumpe 7 mit dem Bypassventil 8 und/ oder dem Rückschlagventil 8 mit Schlauchanschlüssen hergestellt werden.Alternatively, the entire component can be made as a module of suction jet pump 7 with the bypass valve 8 and / or the check valve 8 with hose connections.

Claims (5)

Brennkraftmaschine mit einem Turbolader (3) zwischen einem Luftfilter (1) und einem Kurbelgehäuse (4) und einer Entlüftungsanordnung umfassend eine Saugstrahlpumpe (7), dadurch gekennzeichnet, dass die Entlüftungsanordnung eine Ladeluftstrecke (5), welche sich zwischen Turbolader (3) und Kurbelgehäuse (4) erstreckt, mit einem Abzweig zu einer wenigstens zweistufigen Saugstrahlpumpe (7) aufweist, wobei der Eingang der Saugstrahlpumpe (7) über die Motorentlüftung (6) mit dem Kurbelgehäuse (4) verbunden und der Auslass der Saugstrahlpumpe (7) zur Blow-By-Gas Rückführung (9) mit der Ansaugstrecke (2), welche sich zwischen Luftfilter (1) und Turbolader (3) erstreckt, verbunden ist.Internal combustion engine with a turbocharger (3) between an air filter (1) and a crankcase (4) and a venting arrangement comprising a suction jet pump (7), characterized in that the venting arrangement has a charge air passage (5) extending between the turbocharger (3) and the crankcase (4), with a branch to an at least two-stage suction jet pump (7), wherein the inlet of the suction jet pump (7) via the engine vent (6) connected to the crankcase (4) and the outlet of the suction jet pump (7) for blowing By-gas recirculation (9) with the intake path (2), which extends between the air filter (1) and turbocharger (3) is connected. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, dass in der Saugstrahlpumpe (7) ein Treibstrahl durch eine kleine Düse gedrückt wird und der Strahl an seinem Umfang Gas mitreißt und der durch Zuluft erhöhte Volumenstrom nach der ersten Stufe anschließend eine zweite größere und eine dritte noch größere Düse durchströmt, wobei wiederum ein Gasanteil mitgezogen wird.Internal combustion engine according to claim 1, characterized in that in the suction jet pump (7) a propulsion jet is forced through a small nozzle and the jet entrains gas at its periphery and the supply air increased volume flow after the first stage then a second larger and a third even larger Nozzle flows through, in turn, a gas component is pulled along. Brennkraftmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Saugstrahlpumpe (7) in eine Zylinderkopfhaube (10) integriert ist.Internal combustion engine according to claim 1 or 2, characterized in that the suction jet pump (7) in a cylinder head cover (10) is integrated. Brennkraftmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Saugstrahlpumpe (7) aus Kunststoff, insbesondere Polyamid besteht.Internal combustion engine according to one of claims 1 to 3, characterized in that the suction jet pump (7) made of plastic, in particular polyamide. Brennkraftmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Entlüftungsanordnung wenigstens ein Bypassventil und/ oder ein Rückschlagventil (8) in Strömungsrichtung parallel zur Saugstrahlpumpe (7) und zwischen dem Kurbelgehäuse (4) und der Ansaugstrecke (2) aufweist.Internal combustion engine according to one of claims 1 to 4, characterized in that the venting arrangement at least one bypass valve and / or a check valve (8) in the flow direction parallel to the suction jet pump (7) and between the crankcase (4) and the intake path (2).
EP19186332.3A 2015-01-13 2016-01-07 Combustion engine with multistage suction jet pump Active EP3575613B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015200341.8A DE102015200341A1 (en) 2015-01-13 2015-01-13 Multi-stage suction jet pump
EP16700111.4A EP3245407B1 (en) 2015-01-13 2016-01-07 Multi-stage jet suction pump
PCT/EP2016/050164 WO2016113166A1 (en) 2015-01-13 2016-01-07 Multi-stage jet suction pump

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EP16700111.4A Division EP3245407B1 (en) 2015-01-13 2016-01-07 Multi-stage jet suction pump
EP16700111.4A Division-Into EP3245407B1 (en) 2015-01-13 2016-01-07 Multi-stage jet suction pump

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EP3575613A1 true EP3575613A1 (en) 2019-12-04
EP3575613B1 EP3575613B1 (en) 2021-07-21

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EP16700111.4A Active EP3245407B1 (en) 2015-01-13 2016-01-07 Multi-stage jet suction pump
EP19186332.3A Active EP3575613B1 (en) 2015-01-13 2016-01-07 Combustion engine with multistage suction jet pump

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US (1) US10301987B2 (en)
EP (2) EP3245407B1 (en)
CN (1) CN107135659B (en)
DE (2) DE102015200341A1 (en)
WO (1) WO2016113166A1 (en)

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FR3063304B1 (en) * 2017-02-28 2019-03-22 Akwel DEVICE FOR SUCTION AND DECANTATION OF A CARTER GAS AND ASSOCIATED INSTALLATION
DE202018104879U1 (en) 2018-08-24 2018-09-25 Polytec Plastics Germany Gmbh & Co. Kg tank ventilation
DE102020105328B4 (en) 2020-02-28 2023-06-01 Polytec Plastics Germany Gmbh & Co. Kg Multi-stage ejector pump for a turbocharged internal combustion engine, turbocharger for an internal combustion engine, cylinder head cover with oil separator
DE102020118330A1 (en) * 2020-07-10 2022-01-13 Norma Germany Gmbh Nozzle device for a jet pump and jet pump
CN112455642B (en) * 2020-10-29 2022-02-01 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) Condensate water supercharging device and condensate water system based on steam injection

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WO2016113166A1 (en) 2016-07-21
US20180274410A1 (en) 2018-09-27
US10301987B2 (en) 2019-05-28
EP3575613B1 (en) 2021-07-21
CN107135659A (en) 2017-09-05
EP3245407B1 (en) 2019-12-04
DE202016008766U1 (en) 2019-07-25
EP3245407A1 (en) 2017-11-22
DE102015200341A1 (en) 2016-07-14
CN107135659B (en) 2020-04-21

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