EP3645856A1 - Dispositif d'injection d'eau pour un moteur à combustion interne d'un véhicule à moteur - Google Patents

Dispositif d'injection d'eau pour un moteur à combustion interne d'un véhicule à moteur

Info

Publication number
EP3645856A1
EP3645856A1 EP18729078.8A EP18729078A EP3645856A1 EP 3645856 A1 EP3645856 A1 EP 3645856A1 EP 18729078 A EP18729078 A EP 18729078A EP 3645856 A1 EP3645856 A1 EP 3645856A1
Authority
EP
European Patent Office
Prior art keywords
water
injection device
water injection
internal combustion
combustion engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18729078.8A
Other languages
German (de)
English (en)
Inventor
Julian HAGENLOCH
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 EP3645856A1 publication Critical patent/EP3645856A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
    • 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
    • F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
    • F02M25/0225—Water atomisers or mixers, e.g. using ultrasonic waves
    • 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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a water injection device for an internal combustion engine of a motor vehicle having the features of the preamble of independent claim 1.
  • water can enter a suction pipe or a combustion chamber of the
  • Water extraction system can be obtained for example from the exhaust system of the internal combustion engine in the motor vehicle or from the environment of the motor vehicle and, for example, the water tank are supplied.
  • DE 10 2015 208 476 A1 discloses a water injection system for an internal combustion engine.
  • a water injection device for an internal combustion engine of a motor vehicle comprises a water tank for storing water, at least one water injector for
  • a conveying element for conveying the water from the water tank to the water injector, wherein the conveying element via a first line to the water tank and via a second line with the Water injector is connected.
  • deionized water is provided in the water injection device for injection into the internal combustion engine.
  • Tap water can be excluded. Furthermore, an operating medium is defined with deionized water, which is globally available in defined quality and / or easily produced in the required quality, for example by means of mixed bed exchanger and thus is not subject to the worldwide quality fluctuations of tap water. As a result, system complexity and component complexity as well as the necessary depth of testing can be significantly reduced.
  • the quality of deionized water can be advantageously measured by the conductivity of the deionized water, whereby the quality of the deionized water is advantageously evaluated and comparable. Thus, the detection of a deviating from a specification water quality can be advantageously determined.
  • a deviating from a specification water quality can be advantageously determined.
  • deionized water of sufficient quality can advantageously be achieved simply by the use of ion exchangers, for example mixed-bed exchangers, or by
  • Reverse osmosis or distillation can be made.
  • the water injection device comprises at least one water quality detection device for detecting a
  • Water quality of deionized water provided in the water injection device.
  • Water quality can be advantageously detected the water quality of the deionized water and thus, for example, a misfuelling of the water injection system Furthermore, it can be made possible by monitoring the water quality by the water quality detection device, for example, a misuse detection, for example, intentional refueling with fuels.
  • the water quality detection device is designed as a conductivity sensor for detecting the conductivity of the deionized water.
  • deionized water represents a simple and safe method.
  • the conductivity can be measured via a conductivity sensor.
  • the water quality detection device is arranged in the water tank.
  • the water quality can advantageously be determined easily and simply directly in the region in which the water is stored, the water tank.
  • a water quality detection device arranged in this way the water quality of the deionized water can be monitored particularly well and a misuse detection, ie intentional refueling of the water tank, for example with fuel, can advantageously be detected well and directly in the water tank.
  • the water quality detection device is arranged in the first line or in the second line.
  • the deionized water has a conductivity of less than 30 microsiemens per centimeter, in particular less than 10 microsiemens per
  • Water injection device can be damaged, so that the components of the water injection device are protected against corrosion caused by the water advantageous.
  • the water injection device comprises a control unit which is adapted to control the water injection device depending on the conductivity of the deionized water.
  • the water injection can advantageous to the water quality of the deionized water, which is characterized for example by the conductivity of the deionized water, adapted.
  • control unit is configured to switch off the water injection through the water injection device when the
  • the water injection device can be advantageously protected from damage, for example by corrosive properties of the water provided in the water injection device.
  • FIG. 1 is a highly simplified schematic view of an internal combustion engine with a water injection device according to a first embodiment of the present invention
  • FIG. 2 is a simplified schematic view of the water injection device according to the first embodiment
  • FIG. 3 is a simplified schematic view of the water injection device according to a second embodiment
  • FIG. 4 is a simplified schematic view of the water injection device according to a third embodiment.
  • the internal combustion engine 2 is operated according to the Otto principle and with gasoline direct injection.
  • the internal combustion engine 2 is shown schematically, which has a plurality of cylinders.
  • the internal combustion engine 2 comprises a combustion chamber 20 per cylinder, in which a piston 21 is movable back and forth.
  • 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 discharged via an outlet channel 23.
  • an outlet valve 26 is arranged on the outlet channel 23.
  • a water injector 6 is further arranged, which injects water via a control unit 10 in the direction of a valve element 28 of the inlet valve 25 of the internal combustion engine 2.
  • the water can be injected as in this embodiment, for example, in the intake section 22, so for example in the intake manifold or the inlet channel.
  • the water can be injected via the water injectors 6 but, for example, directly into the combustion chamber 20 of the internal combustion engine 2.
  • two water injectors 6 per cylinder are provided for better treatment or to increase the maximum injectable amount of water per combustion cycle.
  • Fig. 2 the device 1 according to the invention for the injection of water for an internal combustion engine 2 of a motor vehicle is shown in detail.
  • Water injection device 1 comprises a pumping element designed as a pump 3 and an electric drive 4 for driving the conveying element 3. Furthermore, a water tank 5 is provided, which is connected by a first line 7 with the conveying element 3. The water tank 5 is provided for storing water. A second line 8 connects the conveying element 3 with a distributor 9 or a rail, to which a plurality of water injectors 6 is connected. So that's it
  • Conveying element 3 is connected via the second line 8 with the water injector in 6.
  • the conveying element 3 is for conveying the water from the water tank 5 to the
  • Water injectors 6 are provided.
  • the water injectors 6 are provided for injecting water into the internal combustion engine 2.
  • water is supplied from the water tank 5 through the conveying member 3 into the water injectors 6.
  • Water can be conveyed via a refill line 12 into the water tank 5.
  • a prefilter 16 may be disposed in the first conduit 7 and a fine filter 17 may be disposed in the second conduit 8. If now a water injection is requested via the control unit 10, which is designed in particular as a control unit for an internal combustion engine, water is sucked out of the water tank 5 by means of the conveying element 3.
  • the requested amount of water is conveyed via the distributor 9 to the water injectors 6 and injected by means of clocking the water injectors 6 in the inlet channel 22.
  • the conveying element 3 is driven by means of the control unit 10 via the electric drive 4.
  • Control unit 10 also opens and closes the water injectors 6. This allows controlled injection of water into the inlet channels 22.
  • the water injection device 1 deionized water for injecting into the engine 2 is provided.
  • the water injection device 1 in this embodiment comprises a water quality
  • the water quality of the provided in the water injection device 1 deionized water is characterized in particular by a low conductivity of the deionized water.
  • the deionized water preferably has a conductivity of less than 30 microsiemens per centimeter, more preferably less than 10 microsiemens per centimeter.
  • the water quality detection device 14 is, for example, a conductivity sensor for detecting the conductivity of deionized water
  • the water quality detection device 14 is arranged in the water tank 5.
  • the water quality detection device 14 for example as
  • Conductive sensor may be formed, for example, at least partially with Water-filled water tank 5 at least partially wetted by water and thus can measure the water quality of the water in the water tank 5 and thus the water quality of the water provided in the water injection device 1.
  • the water quality detecting means 14 may be provided in other parts of the water injection device 1, for example.
  • it can be arranged in the first conduit 7 between the water tank 5 and the conveying element 3.
  • it can also be arranged, for example, as shown in FIG. 4, in the second line 8 between the conveying element 3 and the distributor 9 or at other points in the water injection device 1.
  • the water quality detection device 14 is connected to the control unit 10, so that the
  • control unit 10 may be configured such that the
  • Water injection by the water injection device 1 is turned off when the conductivity of the deionized water exceeds a predetermined limit.
  • the predetermined limit of the conductivity of the deionized water can be any predetermined limit.
  • microsiemens per centimeter for example, be a conductivity of 30 microsiemens per centimeter, in particular of 10 microsiemens per centimeter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

L'invention concerne un dispositif d'injection d'eau (1) pour un moteur à combustion interne d'un véhicule à moteur. Le dispositif comporte un réservoir (5) d'eau pour stocker l'eau, au moins un injecteur (6) d'eau pour injecter l'eau dans le moteur à combustion interne (2), un élément de refoulement (3) pour refouler l'eau du réservoir (5) d'eau à l'injecteur (6) d'eau, l'élément de refoulement (3) étant relié au réservoir (5) d'eau par une première conduite (7) et à l'injecteur (6) d'eau par une deuxième conduite (8). Selon l'invention, de l'eau désionisée à injecter dans le moteur à combustion interne (2) est située dans le dispositif d'injection d'eau (1).
EP18729078.8A 2017-06-30 2018-05-30 Dispositif d'injection d'eau pour un moteur à combustion interne d'un véhicule à moteur Withdrawn EP3645856A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017211107.0A DE102017211107A1 (de) 2017-06-30 2017-06-30 Wassereinspritzvorrichtung für eine Brennkraftmaschine eines Kraftfahrzeugs
PCT/EP2018/064155 WO2019001884A1 (fr) 2017-06-30 2018-05-30 Dispositif d'injection d'eau pour un moteur à combustion interne d'un véhicule à moteur

Publications (1)

Publication Number Publication Date
EP3645856A1 true EP3645856A1 (fr) 2020-05-06

Family

ID=62528423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18729078.8A Withdrawn EP3645856A1 (fr) 2017-06-30 2018-05-30 Dispositif d'injection d'eau pour un moteur à combustion interne d'un véhicule à moteur

Country Status (6)

Country Link
EP (1) EP3645856A1 (fr)
KR (1) KR20200020734A (fr)
CN (1) CN110832183A (fr)
BR (1) BR112019027838A2 (fr)
DE (1) DE102017211107A1 (fr)
WO (1) WO2019001884A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611521A1 (de) * 1996-03-23 1997-09-25 Bosch Gmbh Robert Verfahren und Vorrichtung der Zufuhr von Kraftstoffdampf zu einem Verbrennungsmotor
GB2357318B (en) * 1999-12-15 2003-06-18 Anthony Mark Downing Improvements in and relating to gas engines
US7216607B2 (en) * 2005-05-27 2007-05-15 Rival Technologies Inc. Emission control water injection system for diesel engines
DE102014222467A1 (de) * 2014-11-04 2016-05-04 Bayerische Motoren Werke Aktiengesellschaft Brennkraftmaschine
DE102015208489A1 (de) * 2015-05-07 2016-11-10 Robert Bosch Gmbh Wassereinspritzvorrichtung einer Brennkraftmaschine und Verfahren zum Betreiben einer solchen Wassereinspritzvorrichtung
DE102015208476A1 (de) 2015-05-07 2016-11-10 Robert Bosch Gmbh Vorrichtung und Verfahren zur Einspritzung von Wasser für eine Brennkraftmaschine
DE102017200291A1 (de) * 2017-01-10 2018-07-12 Robert Bosch Gmbh Wassereinspritzvorrichtung, insbesondere einer Brennkraftmaschine, und Verfahren zum Betreiben einer solchen Wassereinspritzvorrichtung

Also Published As

Publication number Publication date
WO2019001884A1 (fr) 2019-01-03
BR112019027838A2 (pt) 2020-07-07
DE102017211107A1 (de) 2019-01-03
CN110832183A (zh) 2020-02-21
KR20200020734A (ko) 2020-02-26

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