EP3292288B1 - Procédé permettant de faire fonctionner un dispositif d'injection d'eau dans un moteur à combustion interne - Google Patents

Procédé permettant de faire fonctionner un dispositif d'injection d'eau dans un moteur à combustion interne Download PDF

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Publication number
EP3292288B1
EP3292288B1 EP16717331.9A EP16717331A EP3292288B1 EP 3292288 B1 EP3292288 B1 EP 3292288B1 EP 16717331 A EP16717331 A EP 16717331A EP 3292288 B1 EP3292288 B1 EP 3292288B1
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EP
European Patent Office
Prior art keywords
water
pump
line
suction mode
control unit
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Active
Application number
EP16717331.9A
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German (de)
English (en)
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EP3292288A1 (fr
Inventor
Ingmar Burak
Peter Schenk
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Robert Bosch GmbH
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Robert Bosch GmbH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/0227—Control aspects; Arrangement of sensors; Diagnostics; Actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/025—Adding water
    • F02M25/028—Adding water into the charge intakes
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/022—Adding fuel and water emulsion, water or steam
    • F02M25/032—Producing and adding steam
    • F02M25/035—Producing and adding steam into the charge intakes

Definitions

  • the invention relates to a method for operating a device for injecting water into an internal combustion engine, in particular a gasoline engine, according to claim 1.
  • An alternative way of reducing the tendency to knock and lowering the exhaust gas temperatures is to inject water into the internal combustion engine, either directly into the combustion chamber or into the intake tract of the internal combustion engine.
  • Devices for injecting water into an internal combustion engine are, for example, from the documents DE 10 2012 207 907 A1 and EP 2 778 381 A2 known.
  • a particular challenge with a device for water injection is the risk of icing or freezing of the water-carrying components due to the freezing point of water at 0 ° C, especially when the device for water injection is inactive.
  • appropriate measures must be taken.
  • agents for example an antifreeze, to the water in order to lower the freezing point of the water as much as possible.
  • these agents would have an impact on the combustion process in the engine and the chemical composition of the exhaust gas, which would require post-treatment of the exhaust gas to comply with the exhaust gas limit values.
  • the object is achieved according to the invention by providing a method of the type mentioned at the beginning, the method being characterized in that when the pump is operated in the back suction mode, in which the water is pumped back in the direction of the water tank, the at least one water injector is opened so that Air flows into the second line. As a result, the water from the second line and the at least one water injector is sucked back into the water tank. A minimal amount of water remains in the second line and the at least one water injector, which cannot damage the water line and the water-carrying components when it freezes.
  • the invention provides that air flows through the open water injector into the second line while the pump is operating in back suction mode simplifies the back suction of the water, since the formation of a negative pressure in the second line and in the device for water injection is avoided. By avoiding a negative pressure in the device for water injection, the back suction is particularly efficient. The water can be sucked back from the second line within a few seconds.
  • the device for injecting water into an internal combustion engine comprises a water tank for storing water, a pump for conveying the water, the pump being connected to the water tank via a first line, a drive for driving the pump and at least one water injector which is set up for this purpose To inject water into an air line of the internal combustion engine, the water injector being connected to the pump via a second line.
  • the pump can be operated in two delivery directions: delivery mode and back suction mode.
  • delivery mode the pump delivers water from the water tank in the direction of the at least one water injector.
  • back suction mode the water is pumped in the opposite direction from the water injector towards the water tank.
  • the drive for driving the pump drives the pump in accordance with the desired delivery direction.
  • the drive is preferably an electric drive, such as an electric motor.
  • the at least one water injector has a closed and an open state. In the closed state of the at least one water injector, neither air nor water can flow through the water injector. In the open state of the at least one water injector, depending on the operating mode of the pump, water or air can flow through the water injector. While the pump is operating in the delivery mode, water is injected into, for example, an air line of an internal combustion engine via the open water injector. During operation of the pump in the back suction mode, air flows via the open water injector, for example from an air-carrying line of an internal combustion engine into the second line of the device for water injection.
  • the device for water injection can also have several water injectors, which are connected to one another and to the pump via a distributor or a rail.
  • the device for water injection is connected to an internal combustion engine via the water injector (s).
  • all water injectors are advantageously opened so that air can flow into the device for water injection.
  • the device for water injection has a control unit which controls the operation of the pump and / or the water injector.
  • the same control unit advantageously also controls the operation of the internal combustion engine.
  • the control unit for controlling the components of the device for water injection and a control unit for controlling the internal combustion engine are connected to one another and exchange information, for example about the operating state of the internal combustion engine and the operating state of the device for water injection.
  • the control unit of the device for water injection preferably controls the operating mode, delivery mode or back suction mode of the pump. According to the invention, it is provided that the control unit also controls the start time, the duration and / or the sequence of the suck back mode of the pump.
  • sequence means the time sequence and / or the speed of the pump used and, associated therewith, the delivery rate of the pump. For example, the speed of the pump and, associated therewith, the delivery rate of the pump can be varied as a function of the time.
  • the sequence of the back suction mode of the pump is also controlled on a model basis.
  • a time sequence for the speed of the pump and the duration of the operation of the pump in back suction mode is predetermined and stored in the control unit, so that based on the value stored in the control unit Model, the control unit controls the sequence of the suction mode of the pump.
  • several models for the sequence of the suck back mode are stored in the control unit and, depending on the situation, the control unit controls the operation of the pump in the suck back mode on the basis of different models.
  • the back suction mode of the pump is started after the internal combustion engine has been switched off. In particular immediately after switching off the internal combustion engine.
  • the pump starts operating in suckback mode, the control unit being able to differentiate between the various operating states of the internal combustion engine “drive” and “control unit overrun".
  • the duration of the suck back mode corresponds to at least a period of time that is required for sucking back the water volume that extends from the pump up to and including the water injector. This ensures that a sufficient amount of water is sucked back out of the water injector and the second line.
  • the length of time is calculated from the volume of water to be sucked back and the delivery rate of the pump used; factors that may lengthen the required time, such as sucking back against a negative pressure that forms in the second, go into effect Line or, for example, sucking back an air-water volume, is not included in the calculation.
  • a particularly advantageous embodiment provides for at least 75% of the water that was in the second line and the water injector before the start of the suck back mode to be sucked back after the end of the suck back mode.
  • a maximum of 25% of the original water remains in the second line and the water injector after the pump has stopped operating in back suction mode. Investigations by the applicant have shown that this amount of water in the frozen state generally does not damage the components.
  • At least 85% of the water is preferably sucked back. The end of the suck back mode is marked by switching off the pump and closing the water injector.
  • the control unit advantageously controls the point in time and / or the duration of opening of the water injector.
  • the water injector can be opened simultaneously with the start of operation of the pump in the suck back mode.
  • a period of time of +/- 50 ms is also meant in relation to the start of operation of the pump in the back suction mode.
  • the water injector is only opened with a time delay from the start of operation of the pump in the suck back mode.
  • the excess water pressure in the second line and the water injector can only be reduced by sucking back the pump and a slight negative pressure can preferably be built up before the water injector is opened and air flows into the second line.
  • the time-delayed opening of the water injector prevents part of the water from unintentionally flowing through the open water injector, for example into the air inlet duct of the internal combustion engine, due to the excess water pressure prevailing in the second line and the water injector.
  • the internal combustion engine is switched off and outside temperatures are low, the water in the air inlet duct could freeze and damage it.
  • the water injector is opened with a time delay from the start of operation of the pump in the back suction mode.
  • the water injector is opened at least 100 ms or advantageously at least 200 ms later than the start of the operation of the pump in the suck back mode.
  • the device has a pressure sensor which measures the pressure of the water in the line in the second line and that the water injector is only opened when the water pressure in the second line falls below a limit value when the pump is operated in back suction mode.
  • This limit value for the pressure is advantageously below the air pressure prevailing in the air inlet duct.
  • the limit value for the pressure can be equal to the ambient pressure when the internal combustion engine is switched off.
  • the internal combustion engine has a combustion chamber in which fuel and air enter the combustion chamber separately from one another via several inlet valves. After combustion, the air-fuel mixture flows out of the combustion chamber via an outlet valve. The air arrives at the air inlet valve via an inlet duct, a so-called suction pipe.
  • the water injector of the device for water injection is advantageously arranged on the air inlet channel, preferably in the vicinity of the air inlet valve, so that the water is injected into the air inlet channel and reaches the combustion chamber together with the air.
  • the arrangement of the water injector on the inlet channel carrying fresh air ensures that when the water injector is opened while the pump is operating in the back suction mode, only air and no air with additional gas components or particles arising during the combustion process get into the device for water injection.
  • the additional gases produced during the combustion process could damage the components of the device for water injection over time or the components would have to be designed to be corrosion-resistant in relation to the additional gases produced in the combustion process.
  • the particles produced during combustion could clog components of the water injection device and thus damage them.
  • FIG. 1 and Figure 2 a device 1 for water injection and a section of an internal combustion engine 2 are shown by way of example.
  • the device 1 for water injection comprises a pump 4 and an electric drive 5 for driving the pump 4. Furthermore, a water tank 3 is provided, which is connected to the pump 4 by a first line 10. A second line 11 connects the pump 4 to at least one water injector 6. As shown here, a multiplicity of water injectors 6 can be connected to one another and to the pump 4 via a distributor 7 or a rail.
  • water is supplied from the water tank 3 by the pump 4 into the water injector 6.
  • the water in the water tank 3 is, for example, a condensate from an air conditioning system (not shown here), the condensate being fed to the water tank 3 via an inlet line 8.
  • water preferably deionized
  • a sieve 91 can optionally be provided in the refill line 9.
  • a pre-filter 92 is arranged in the first line 10 and a fine filter 93 in the second line 11 in order to filter any foreign bodies or dirt particles that may be present from the water.
  • the prefilter 92 and / or the fine filter 93 can optionally be designed to be heatable.
  • a sensor 32 can be arranged in or on the water tank 3, which measures the level of the water in the water tank 3 and / or the temperature of the water in the water tank 3 and forwards it to a control unit 30 for monitoring and controlling the device 1 for water injection.
  • the control unit 30 also controls the pump 4 and its operating mode, ie the conveying direction, the conveying capacity and the duration of the respective operating modes of the pump 4.
  • the pump 4 can be operated in two opposite conveying directions. In the so-called pumping mode, the pump 4 conveys water from the water tank 3 to the water injector 6. In the back suction mode, the pump 4 conveys or sucks the water away Water injector 6 back into the water tank 3. By choosing the appropriate speed of the pump 4, the desired delivery line of the pump 4 can be set.
  • a pressure sensor 31 and / or a pressure regulator in the form of a diaphragm 33 can be arranged in a return line 12 in the device 1.
  • the return line 12 connects the second line 11 to the water tank 3.
  • a check valve 34 which, when the pump 4 is operating in the back suction mode, prevents the pump 4 from flowing water from the water tank 3 into the second line via the return line 12 11 sucks.
  • the control unit 30 regulates the desired pressure in the second line 11.
  • the pressure in the distributor 7 or in the water injector 6 is preferably set in the range of 3-10 bar. This has the advantage that when water is injected into the air inlet duct 22 of the internal combustion engine 2, a wall occupation of the air inlet duct 22 with water is minimized or eliminated. The injected water thus reaches the combustion chamber 23 completely.
  • the internal combustion engine 2 shown schematically has a plurality of valves.
  • the internal combustion engine 2 comprises a combustion chamber 23 per cylinder, in which a piston 24 can be moved back and forth. Furthermore, the internal combustion engine 2 has two inlet valves 25 per cylinder, each with an inlet channel 22, via which air is supplied to the combustion chamber 23. An exhaust gas is discharged via an exhaust pipe 26.
  • an inlet valve 25 is arranged on the inlet channel 22 and an outlet valve 27 is arranged on the outlet channel 26.
  • a fuel injection valve 28 is arranged on the combustion chamber 23.
  • a water injector 6, which, controlled by the control unit 30, injects water in the direction of the inlet valve 25 of the internal combustion engine 2 is arranged on the air inlet duct 22 or on the intake manifold.
  • the control unit 30 controls the operation of the pump 4 and the water injector 6. In addition, the control unit 30 also controls the operation of the internal combustion engine 2.
  • the control unit 30 receives information about the Environment and the operating states of the individual components of the device 1 for water injection and the internal combustion engine 2 and can control and / or regulate the operation of the device 1 for water injection and internal combustion engine 2 on the basis of this information.
  • the control unit 30 can differentiate between different operating states of the internal combustion engine 2: "Drive” and "Control unit overrun".
  • FIG. 3 two possible embodiments of the method according to the invention for operating a device 1 for water injection are shown schematically.
  • a first method step 100 the internal combustion engine 1 is switched off, ie the operating state of the internal combustion engine 1 changes from "Drive” to "Control unit overrun".
  • the control unit 30 starts the method according to the invention in the device 1 for water injection.
  • the control unit 30 also initiates a change in the operation of the pump 4 from the delivery mode to the suction mode.
  • the conveying direction of the pump 4 is reversed so that the water is sucked back from the water injector 6 or the water injectors in the direction of the water tank 3.
  • the suction mode of the pump 4 is typically started directly with the change of operating mode in the internal combustion engine 2.
  • the water injector 6 or the water injectors are opened at the same time as the start of the back suction mode of the pump 4, so that air can flow from the air inlet duct 22 of the internal combustion engine 2 into the device 1 for water injection. Simultaneously means that the two actions are initiated within a period of 50 ms.
  • the water injector 6 or the water injectors are opened in a further method step 102 with a time delay to the start of the back suction mode of the pump 4.
  • the time offset can be a predetermined fixed period of time of, for example, 100 ms or 200 ms.
  • the exact value of the time offset can be selected as a function of the back suction capacity of the pump 4 and the volume to be emptied in the second line 11 and the water injector 6 or the water injectors.
  • the control unit 30 monitors the water pressure in the second line 11.
  • the control unit 30 only opens the water injector 6 or the water injectors when the pressure measured by the pressure sensor 31 falls below a limit value.
  • This limit value for the pressure is advantageously equal to the air pressure prevailing in the air inlet channel 22 or is below the air pressure in the air inlet channel 22. This prevents some of the water from escaping from the The water injector 6 or the second line 11 flows into the air inlet duct 22 of the internal combustion engine 2 and may freeze there when the internal combustion engine 2 is switched off and outside temperatures are low.
  • step 103 the back suction mode of the pump 4 is ended by switching off the pump and the water injector 6 is closed again.
  • the duration and sequence of the operation of the pump 4 in the back suction mode are controlled by the control unit 30.
  • the duration and / or the sequence of the suck back mode is controlled based on a model.
  • the duration of the operation of the pump 4 in the back suction mode is determined as a function of the volume of the components to be emptied, the set delivery rate of the pump 4 and the control strategy of the water injectors 6.
  • the duration corresponds to at least one period of time that is required to suck back the volume of water that extends from the pump 4 to the water injectors 6 at the specified delivery rate of the pump 4.
  • the delivery rate of the pump 4 is proportional to the speed of the pump 4.
  • the noises caused by the pump 4 are also proportional to the speed of the pump 4.
  • the pump is operated at a higher speed and, with a reduction in the number of other noise-causing components, the speed of the pump 4 and thus the noises caused by the pump 4 can be reduced.
  • the speed of the pump 4 remains constant during the suction phase.
  • the speed of the pump can also be reduced gradually and / or continuously.
  • control unit 30 regulates the speed of the pump 4 depending on the operating state of other components of the internal combustion engine, such as depending on the overall background noise of the internal combustion engine, and / or other parameters of the environment, such as the outside temperature.
  • the control unit can, for example, operate the pump in back suction mode until at least 75% of the water has been sucked back.
  • the information stored on the volume to be emptied can be used to calculate the residual water in the second line 11 and the water injectors 6 in the control unit.
  • the maximum water in the second line 11 and in the water injector 6 or the water injectors at the beginning of the operation of the pump 4 in the back suction mode supplies the starting value for the calculation.
  • a maximum of 25% of the original water remains after the end of the operation of the pump 4 in the back suction mode. Investigations by the applicant have shown that this amount of water in the frozen state generally does not damage the components. Preferably at least 85% of the water is sucked back.
  • the water tank 3 and the components arranged in or on the water tank 3 must be designed to be freeze-proof, since these components of the device 1 for water injection naturally remain filled with water even after the pump 4 has stopped operating in the suck back mode. Furthermore, the water cannot be sucked off from the diaphragm 33, the check valve 34 and the return line 12, so that these components are also designed to be freeze-proof.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Jet Pumps And Other Pumps (AREA)

Claims (8)

  1. Procédé permettant de faire fonctionner un dispositif (1) d'injection d'eau dans un moteur à combustion interne (2), le dispositif (1) présentant
    • un réservoir d'eau (3) pour stocker de l'eau,
    • une pompe (4) pour refouler l'eau, la pompe (4) étant reliée au réservoir d'eau (3) par une première conduite (10), et la pompe (4) pouvant fonctionner dans un mode refoulement et un mode réaspiration,
    • un entraînement (5) pour entraîner la pompe (4),
    • au moins un injecteur d'eau (6) qui est aménagé pour injecter de l'eau dans une conduite (7) conduisant de l'air du moteur à combustion interne (2), l'injecteur d'eau (6) étant relié à la pompe (4) par une deuxième conduite (11),
    dans lequel le dispositif (1) présente une unité de commande (30) pour l'injection d'eau, l'unité de commande (30) commandant le fonctionnement de la pompe (4) et ledit au moins un injecteur d'eau (6), caractérisé en ce que pendant le fonctionnement de la pompe (4) en mode réaspiration, dans lequel l'eau est refoulée en direction du réservoir d'eau (3), ledit au moins un injecteur d'eau (6) est ouvert de sorte que de l'air circule dans la deuxième conduite (11), l'unité de commande (30) commandant un instant de démarrage, une durée et/ou un déroulement du mode réaspiration de la pompe (4) sur la base d'un modèle, dans lequel, en fonction du volume à purger du dispositif (1) pour l'injection d'eau et de la puissance de refoulement de la pompe (4), un déroulement temporel pour la vitesse de rotation de la pompe (4) et une durée du fonctionnement de la pompe (4) en mode réaspiration est prédéterminé et stocké dans l'unité de commande (10) de sorte que sur la base du modèle stocké dans l'unité de commande (10), l'unité de commande (10) commande le déroulement du mode réaspiration de la pompe (4).
  2. Procédé selon la revendication 1, caractérisé en ce que le mode réaspiration de la pompe (4) démarre après l'arrêt du moteur à combustion interne (2).
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la durée du mode réaspiration correspond au moins à une période qui est nécessaire à la réaspiration d'un volume d'eau qui s'étend de la pompe (4) jusqu'à l'injecteur d'eau (6) inclus.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'après achèvement du mode réaspiration, 75 % de l'eau qui se trouvait dans la deuxième conduite (11) et ledit au moins un injecteur d'eau (6) a été réaspirée avant le début du mode réaspiration.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de commande (8) commande l'instant et/ou la période d'une ouverture dudit au moins un injecteur d'eau (6).
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit au moins un injecteur d'eau (6) est ouvert en même temps que le début du fonctionnement de la pompe (4) en mode réaspiration.
  7. Procédé selon l'une quelconque des revendications précédentes 1 à 5, caractérisé en ce que ledit au moins un injecteur d'eau (6) est ouvert de manière différée par rapport au début du fonctionnement de la pompe (4) en mode réaspiration, ledit au moins un injecteur d'eau (6) étant en particulier ouvert au moins 100 ms plus tard.
  8. Procédé selon l'une quelconque des revendications précédentes 1 à 5, caractérisé en ce que le dispositif (1) présente un capteur de pression (31) qui mesure dans la deuxième conduite (11) la pression de l'eau dans la conduite, et en ce que ledit au moins un injecteur d'eau (6) n'est ouvert qu'en cas de soupassement d'une valeur limite de la pression d'eau dans la deuxième conduite (11) pendant le fonctionnement de la pompe (4) en mode réaspiration.
EP16717331.9A 2015-05-07 2016-04-13 Procédé permettant de faire fonctionner un dispositif d'injection d'eau dans un moteur à combustion interne Active EP3292288B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015208509.0A DE102015208509A1 (de) 2015-05-07 2015-05-07 Verfahren zum Betrieb einer Vorrichtung zur Wassereinspritzung in eine Brennkraftmaschine
PCT/EP2016/058099 WO2016177544A1 (fr) 2015-05-07 2016-04-13 Procédé permettant de faire fonctionner un dispositif d'injection d'eau dans un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP3292288A1 EP3292288A1 (fr) 2018-03-14
EP3292288B1 true EP3292288B1 (fr) 2021-06-09

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EP16717331.9A Active EP3292288B1 (fr) 2015-05-07 2016-04-13 Procédé permettant de faire fonctionner un dispositif d'injection d'eau dans un moteur à combustion interne

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Country Link
US (1) US10704499B2 (fr)
EP (1) EP3292288B1 (fr)
CN (1) CN107580654B (fr)
DE (1) DE102015208509A1 (fr)
WO (1) WO2016177544A1 (fr)

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US9957921B2 (en) * 2016-10-04 2018-05-01 Ford Global Technologies, Llc Method and system for controlling water injection
DE102017200298A1 (de) * 2017-01-10 2018-07-12 Robert Bosch Gmbh Wassereinspritzvorrichtung einer Brennkraftmaschine und Verfahren zum Betreiben einer solchen Wassereinspritzvorrichtung
DE102017203609A1 (de) 2017-02-23 2018-08-23 Mahle International Gmbh Einrichtung zur Einspritzung von Wasser in eine Brennkraftmaschine
DE102017116472A1 (de) * 2017-07-21 2019-01-24 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Wassereinspritzvorrichtung für einen Verbrennungsmotor
CN107989717A (zh) * 2017-09-07 2018-05-04 同济大学 一种缸外喷水的柴油机
CN108049989A (zh) * 2017-09-07 2018-05-18 同济大学 一种缸外喷水的汽油机
DE102017216643A1 (de) * 2017-09-20 2019-03-21 Robert Bosch Gmbh Wassereinspritzvorrichtung einer Brennkraftmaschine
DE102017218385A1 (de) * 2017-10-13 2019-04-18 Bayerische Motoren Werke Aktiengesellschaft Entnahmeeinrichtung für ein flüssiges Betriebsmittel eines Kraftfahrzeugs aus einem Behälter
DE102017219369A1 (de) * 2017-10-27 2019-05-02 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Verhindern des Vereisens einer Einspritzanlage einer Brennkraftmaschine
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DE102015208509A1 (de) 2016-11-10
CN107580654B (zh) 2021-02-02
WO2016177544A1 (fr) 2016-11-10
EP3292288A1 (fr) 2018-03-14
US20180112632A1 (en) 2018-04-26
CN107580654A (zh) 2018-01-12

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