EP3292287A1 - Dispositif d'injection d'eau d'un moteur à combustion interne et procédé permettant de faire fonctionner un tel dispositif d'injection d'eau - Google Patents

Dispositif d'injection d'eau d'un moteur à combustion interne et procédé permettant de faire fonctionner un tel dispositif d'injection d'eau

Info

Publication number
EP3292287A1
EP3292287A1 EP16716874.9A EP16716874A EP3292287A1 EP 3292287 A1 EP3292287 A1 EP 3292287A1 EP 16716874 A EP16716874 A EP 16716874A EP 3292287 A1 EP3292287 A1 EP 3292287A1
Authority
EP
European Patent Office
Prior art keywords
water
heating element
water tank
water injection
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16716874.9A
Other languages
German (de)
English (en)
Other versions
EP3292287B1 (fr
Inventor
Ingmar Burak
Peter Schenk
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3292287A1 publication Critical patent/EP3292287A1/fr
Application granted granted Critical
Publication of EP3292287B1 publication Critical patent/EP3292287B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
    • F02B47/02—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being water or steam
    • 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
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/064—Introducing corrections for particular operating conditions for engine starting or warming up for starting at cold start

Definitions

  • the present invention relates to a water injection device of a
  • Another aspect of the invention relates to a method of operating such a water injection device.
  • the water injection system used to operate water becomes
  • Heating element used A disadvantage of this heating element is that the heat is reduced to a small location around the heating element. This can be a non-optimal thawing of the icy components of the
  • Water injection system result. Especially if water due a requested water injection is sucked from a partially thawed water tank, it may lead to a loss of contact of the
  • Operation of the internal combustion engine can cause.
  • the water injection device of an internal combustion engine according to the invention with the features of claim 1 has the advantage that thawing of icy components of the water injection device can be done safely and quickly. Furthermore, the so-called ice cave effect is avoided, which otherwise leads to a significant reduction of
  • Internal combustion engine reaches, which comprises a water tank for storing water, at least one water injector, a conveying element for conveying the water, which is connected via a suction and a return line to the water tank, and a first heating element, which is at least partially disposed on the suction line ,
  • the first heating element is arranged to thaw water in the water tank and / or in the suction line, which is frozen, in order to thaw the thawed water in the suction line over the
  • the water injection device further comprises a second heating element, which is at least partially disposed on the return line.
  • Heating element is adapted to additionally heat the thawed by the first heating element water.
  • the second heating element is adapted to additionally heat the thawed by the first heating element water.
  • Heating element are turned on, even if water, which is located in the return line, is frozen. Thus, the water in the
  • Return line are thawed by the waste heat of the second heating element together with the registered in the already thawed water heat.
  • the water injection device comprises a delivery line, via which the delivery element is connected to the water injector, and on which a third heating element is at least partially arranged.
  • the third heating element may act to assist the first heating element and / or the second heating element.
  • the water injection device comprises a fourth
  • Heating element which is arranged in the water tank. By providing the fourth heating element, a faster thawing of the iced water tank is achieved.
  • the first heating element and / or the second heating element and / or the third heating element and / or the fourth heating element may preferably be formed as a unit.
  • the first heating element and / or the second heating element and / or the third heating element and / or the fourth heating element has an electric heating element and / or a
  • An electric heating element offers the advantage of easy control.
  • a hydraulic heat exchanger can be adapted to the particular space and design requirements, resulting in optimum heat transfer to the frozen water.
  • the hydraulic heat exchanger is preferably arranged to use the cooling water of the internal combustion engine for thawing the frozen water. Consequently The heat contained in the cooling water by cooling the engine can be reused.
  • the conveyor element is arranged to be operated in a non-optimal operating point of the conveyor element to generate heat.
  • a non-optimal operating point is the operating point to understand, in which a part of the electric power in a drive of the
  • Conveying element is converted into heat.
  • the conveyor element When the conveyor element is designed as a pump, operation of the pump at a lower speed than that at an optimum operating point is desired, so that the generated heat of the conveyor element is transferred to the water.
  • the conveying element is furthermore preferably set up, with an active one
  • Another aspect of the present invention relates to an internal combustion engine comprising a water injection device according to the invention.
  • the advantages obtained in relation to the water injection device according to the invention remain here as well.
  • the internal combustion engine is set up to be operated with gasoline and the Otto principle.
  • the internal combustion engine is to be understood, in which a combustion of gasoline or gasoline-air mixture takes place by spark ignition in the form of a spark plug. Since in such an internal combustion engine, the ignition by the
  • Ignition is precisely predetermined and is improved by the injection of water combustion, by the circulation of thawed by the at least one intended heating element water in the water injection device failsafe operation of the
  • the water injection device according to the invention is used in an internal combustion engine with direct injection and turbocharging.
  • the present invention relates to a method for operating a water injection device with at least one water injector, and a conveying element for conveying the water, which is connected via a suction line and a return line to a water tank.
  • a method for operating a water injection device with at least one water injector, and a conveying element for conveying the water which is connected via a suction line and a return line to a water tank.
  • the inventive method is in the water tank and / or in the
  • Suction line located water which is frozen, thawed by a first heating element.
  • the thawed water in the intake is conveyed according to the invention via the return line back into the water tank of the water injection device.
  • the conveyor element is operated at a non-optimal operating point of the conveyor element to generate heat.
  • the conveying element is operated during an active water injection during the thawing process so that a minimum amount of thawed water remains in the water tank.
  • Figure 1 is a greatly simplified schematic view of a
  • Figure 2 is a simplified schematic view of
  • Figure 3 is a simplified schematic view of
  • Figure 4 is a simplified schematic view of
  • Figure 5 is a simplified schematic view of
  • Water injection device 1 of an internal combustion engine 2 according to a first embodiment of the present invention described in detail.
  • the internal combustion engine 2 is operated according to the Otto principle and with gasoline direct injection.
  • the internal combustion engine 2 which has a plurality of cylinders, and a part of the water injection device 1 according to the invention is shown schematically.
  • the internal combustion engine 2 comprises per cylinder a combustion chamber 20 in which a piston 21 is movable back and forth. Furthermore, the internal combustion engine 2 preferably has two inlet valves 25 per cylinder, each having an inlet channel 22, via which air is supplied to the combustion chamber 20. Exhaust gas is removed via an exhaust duct 23. For this purpose, an exhaust valve 26 is arranged on the exhaust duct 23.
  • the reference numeral 24 also designates a fuel injection valve.
  • a water injector 6 is further arranged, which via a control unit 10 water in the inlet channel 22 of the
  • Internal combustion engine 2 injects.
  • two water injectors 6 per cylinder are provided, which can be injected for better treatment or to increase the maximum per combustion cycle
  • Amount of water leads.
  • a water injector per cylinder may be arranged.
  • the water injection device 1 comprises a pump designed as Conveying element 3 and an electric drive 4 for driving the pump. Furthermore, a water tank 5 is provided which by a
  • Suction line 7 is connected to the conveying element 3.
  • a conveying line 8 connects the conveying element 3 with a distributor 9 or a rail, to which a plurality of water injectors 6 is connected.
  • an air conditioner is preferably used, including the
  • Water injection device 1 has a supply line 1 1.
  • deionized water can be conveyed into the water tank 5 via a refill line 1 2.
  • a refill line 1 may optionally be provided a sieve.
  • a pre-filter 16 in the first line 7 and a fine filter 17 are arranged in the delivery line 8, which can be optionally heated.
  • control unit 1 which is preferably designed as the control unit of the internal combustion engine 2, a water injection under normal
  • a pressure regulator 15 is arranged in the form of a diaphragm in a return line 13, which connects the delivery line 8 with the water tank 5.
  • a check valve can be used as the pressure regulator 15.
  • a pressure sensor 14 is further provided in the delivery line 8.
  • the water injection device 1 is used at temperatures below the freezing point of the water of the water injection device 1, it may lead to icing of the water tank 5 and / or the suction line 7.
  • This area of the water injection device 1 may be sensitive, even if the internal combustion engine 1 is in operation, since this area may be removed from the combustion chamber 22.
  • a temperature or level sensor 1 8 can be used.
  • a first heating element 19a is arranged in the suction line 7. The first heating element 19 a is arranged to thaw the water which is frozen in the water tank 5 and / or in the suction line 7 and which is frozen.
  • the conveying element 3 is further configured to convey the thawed water in the suction line 7 and / or the water tank 5 via the return line 13 back into the water tank 5.
  • the first heater element 19a may be used as an electric heater element such as a heater. an electrical resistance and / or be designed as a hydraulic heat exchanger.
  • the hydraulic heat exchanger may be configured to use cooling water of the internal combustion engine 2 for thawing the frozen water.
  • the conveyor element 3 will be in still inactive water injection, i. with closed water injectors 6, turned on.
  • the thawed water is then supplied via the return line 13 via the pressure regulator 15 to the water tank 5.
  • Circulation processes increases. This results in a very fast thawing of the frozen water.
  • the conveying element 3 can be operated at a non-optimal operating point.
  • the conveying element 3 can be operated deliberately in a rotational speed range in which the heat losses of the conveying element 3 increase. This means that the efficiency of the conveyor element 3 on the not optimal operating point is not maximum. This leads to another
  • Heating of the circulating water which facilitates the thawing of the still frozen water. Will be optimized due to the driving conditions during this
  • Water injection amount is smaller than a minimum water injection amount, which is needed for the combustion, the performance of the
  • Water injection quantity can be avoided.
  • the generated heat is optimally distributed in the water tank 5.
  • thawing of the frozen water in the water tank 5 as well as in the suction line 7 can take place faster via the water injection device 1 according to the invention.
  • the water injection device 1 is thus ready earlier.
  • Water injection device 1 according to a second embodiment ( Figure 3) further comprise a second heating element 19b.
  • Heating element 19b is arranged on the return line 13. Thus, the already thawed water during its circulation can be further heated to introduce more heat in the water tank 5.
  • the second heating element 19b may also help when the
  • Return line 13 is completely or partially iced.
  • FIG. 4 shows a third embodiment of the present invention.
  • the third embodiment differs from the second embodiment basically in that a third heating element 19c is arranged in the conveying line 8.
  • a third heating element 19c is arranged in the conveying line 8.
  • the third heating element 19c is arranged in front of the return line 13 in the conveying direction of the water.
  • the water injection device 1 according to a fourth exemplary embodiment of the present invention has a fourth heating element 19d.
  • the fourth heating element 19d is disposed within the water tank 5, on. By providing a fourth heating element, the frozen water in the water tank 5 can be thawed faster. Thus, the
  • the heating elements 19a, 19b, 19c and 19d can form a heating unit.
  • the heating elements 19a, 19b, 19c and 19d are designed as hydraulic heat exchangers, the transfer of the heat to the water in a unit cycle can take place.
  • heating elements 19a, 19b, 19c and 19d can also serve as the heating of the heated filter elements 16 and 17.

Landscapes

  • 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)

Abstract

La présente invention concerne un dispositif d'injection d'eau d'un moteur à combustion interne (2), comprenant un réservoir d'eau (5) pour le stockage d'eau, au moins un injecteur d'eau (6), un élément de transport (3) pour le transport de l'eau, lequel élément de transport est relié au réservoir d'eau (3) par une conduite d'admission (7) et par une conduite de retour (13), ainsi qu'un premier élément chauffant (19a) qui est au moins en partie placé sur la conduite d'admission (7). Selon l'invention, le premier élément chauffant (19a) est conçu pour dégeler l'eau gelée se trouvant dans le réservoir d'eau (5) et/ou dans la conduite d'admission (7). De plus, l'élément de transport (3) est conçu pour ramener dans le réservoir d'eau (5), par la conduite de retour (13), l'eau degelée dans la conduite d'admission (7). Un autre aspect de l'invention concerne un moteur à combustion interne comprenant un tel dispositif d'injection d'eau (1), ainsi qu'un procédé permettant de faire fonctionner ledit dispositif d'injection d'eau (1).
EP16716874.9A 2015-05-07 2016-04-18 Dispositif d'injection d'eau d'un moteur à combustion interne et procédé permettant de faire fonctionner un tel dispositif d'injection d'eau Active EP3292287B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015208480.9A DE102015208480A1 (de) 2015-05-07 2015-05-07 Wassereinspritzvorrichtung einer Brennkraftmaschine und Verfahren zum Betreiben einer solchen Wassereinspritzvorrichtung
PCT/EP2016/058502 WO2016177557A1 (fr) 2015-05-07 2016-04-18 Dispositif d'injection d'eau d'un moteur à combustion interne et procédé permettant de faire fonctionner un tel dispositif d'injection d'eau

Publications (2)

Publication Number Publication Date
EP3292287A1 true EP3292287A1 (fr) 2018-03-14
EP3292287B1 EP3292287B1 (fr) 2021-06-09

Family

ID=55755599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16716874.9A Active EP3292287B1 (fr) 2015-05-07 2016-04-18 Dispositif d'injection d'eau d'un moteur à combustion interne et procédé permettant de faire fonctionner un tel dispositif d'injection d'eau

Country Status (4)

Country Link
EP (1) EP3292287B1 (fr)
CN (1) CN107624145B (fr)
DE (1) DE102015208480A1 (fr)
WO (1) WO2016177557A1 (fr)

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DE102016218174A1 (de) 2016-09-21 2018-03-22 Bayerische Motoren Werke Aktiengesellschaft Fahrzeug-Behältersystem für ein hinsichtlich biologischer Verunreinigungen zu behandelndes Betriebsmittel
DE102017206251B3 (de) 2017-04-11 2018-05-17 Bayerische Motoren Werke Aktiengesellschaft Wassertankeinrichtung für eine Brennkraftmaschine mit Wassereinspritzung
DE102017212057A1 (de) * 2017-07-13 2019-01-17 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Aufbereitung von Wasser in einem Kraftfahrzeug
DE102017215214B4 (de) * 2017-08-31 2024-04-11 Vitesco Technologies Germany Gmbh Vorrichtung zum Bestimmen eines Fluidlevels und einer Qualität eines Fluids
DE102017216627A1 (de) * 2017-09-20 2019-03-21 Robert Bosch Gmbh Wassereinspritzvorrichtung für eine Brennkraftmaschine, Kraftfahrzeug und Verfahren zur Wassereinspritzung
DE102017216619A1 (de) * 2017-09-20 2019-03-21 Robert Bosch Gmbh Wassereinspritzvorrichtung für eine Brennkraftmaschine, Kraftfahrzeug und Verfahren zur Wassereinspritzung
DE102017218385A1 (de) * 2017-10-13 2019-04-18 Bayerische Motoren Werke Aktiengesellschaft Entnahmeeinrichtung für ein flüssiges Betriebsmittel eines Kraftfahrzeugs aus einem Behälter
DE102018200091A1 (de) * 2018-01-04 2019-07-04 Robert Bosch Gmbh Wassereinspritzvorrichtung für eine Brennkraftmaschine und Verfahren zur Wassereinspritzung
DE102018208001A1 (de) * 2018-05-22 2019-11-28 Robert Bosch Gmbh Kühlmittelfördereinrichtung für ein Kühlsystem einer Brennkraftmaschine, insbesondere eines Kraftfahrzeugs, Kühlsystem und Brennkraftmaschine
DE102018208012A1 (de) * 2018-05-22 2019-11-28 Robert Bosch Gmbh Wassereinspritzsystem für Brennkraftmaschinen mit entsperrbarem Rückschlagventil
DE102018208901A1 (de) * 2018-06-06 2019-12-12 Robert Bosch Gmbh Wassereinspritzvorrichtung für eine Brennkraftmaschine
EP3581783A1 (fr) * 2018-06-11 2019-12-18 Robert Bosch GmbH Dispositif d'injection d'eau pour un moteur à combustion interne et procédé d'injection d'eau
DE102018210769A1 (de) * 2018-06-29 2020-01-02 Bayerische Motoren Werke Aktiengesellschaft Wassereinspritzvorrichtung einer Fahrzeug-Brennkraftmaschine
DE102018218749A1 (de) * 2018-11-02 2020-05-07 Robert Bosch Gmbh Wassereinspritzvorrichtung für eine Brennkraftmaschine
DE102018219205A1 (de) * 2018-11-12 2020-05-14 Robert Bosch Gmbh Einspritzsystem für einen Verbrennungsmotor, Verfahren zum Betreiben eines Einspritzsystems
DE102018222508A1 (de) 2018-12-20 2020-06-25 Audi Ag Verfahren zum Betreiben einer Antriebseinrichtung sowie entsprechende Antriebseinrichtung
DE102019112565B4 (de) * 2019-05-14 2021-08-19 Bayerische Motoren Werke Aktiengesellschaft Fahrzeug mit Wassereinspritzsystem
DE102019113499A1 (de) * 2019-05-21 2020-11-26 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Betreiben einer Wassereinspritzvorrichtung und Wassereinspritzvorrichtung
DE102019214766B4 (de) 2019-09-26 2021-11-04 Vitesco Technologies GmbH Verfahren und Vorrichtung zur Ermittlung des Vereisungszustands einer nicht direkt im Abgasmassenfluss angeordneten Komponente des Abgasstrangs eines Kraftfahrzeugs
DE102020207469A1 (de) 2020-06-17 2021-12-23 Volkswagen Aktiengesellschaft Kraftfahrzeug mit Wassereinspritzungssystem und Verfahren zum Betreiben eines Kraftfahrzeugs mit Wassereinspritzungssystem
DE102021100971A1 (de) 2021-01-19 2022-07-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Brennkraftmaschine, Fahrzeug und Verfahren zum Betreiben einer Brennkraftmaschine
DE102021100968A1 (de) 2021-01-19 2022-07-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Brennkraftmaschine und Fahrzeug mit Brennkraftmaschine
DE102021100966A1 (de) 2021-01-19 2022-07-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Brennkraftmaschine, Fahrzeug und Verfahren zum Betreiben einer Brennkraftmaschine
CN115217675B (zh) * 2022-03-01 2024-03-08 广州汽车集团股份有限公司 发动机喷水系统、发动机喷水系统的控制方法及汽车

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Also Published As

Publication number Publication date
CN107624145A (zh) 2018-01-23
DE102015208480A1 (de) 2016-11-10
EP3292287B1 (fr) 2021-06-09
WO2016177557A1 (fr) 2016-11-10
CN107624145B (zh) 2020-05-05

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