EP3380709A1 - Système de carburant/d'air pour moteurs à combustion interne - Google Patents

Système de carburant/d'air pour moteurs à combustion interne

Info

Publication number
EP3380709A1
EP3380709A1 EP16805046.6A EP16805046A EP3380709A1 EP 3380709 A1 EP3380709 A1 EP 3380709A1 EP 16805046 A EP16805046 A EP 16805046A EP 3380709 A1 EP3380709 A1 EP 3380709A1
Authority
EP
European Patent Office
Prior art keywords
air
fuel
nozzle
injection system
nozzle needle
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Withdrawn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
EP16805046.6A
Other languages
German (de)
English (en)
Inventor
Hermann Golle
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3380709A1 publication Critical patent/EP3380709A1/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Withdrawn legal-status Critical Current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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0686—Injectors
    • F02D19/0694—Injectors operating with a plurality of fuels
    • 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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • F02M43/02—Pumps peculiar thereto
    • 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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • F02M43/04—Injectors peculiar thereto
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/008—Arrangement of fuel passages inside of injectors
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/042—The valves being provided with fuel passages
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • 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
    • F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
    • F02M67/10—Injectors peculiar thereto, e.g. valve less type
    • F02M67/12—Injectors peculiar thereto, e.g. valve less type having valves
    • 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
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the invention relates to an injection system in which the fuel is not exclusively by the hydraulic
  • Jet atomization is processed under high pressure.
  • Particulate emission e.g. B. also in conjunction with a
  • Pre-chamber engine with the pre-chamber which is tied off from the main combustion chamber, "in which a partial combustion takes place, which takes all the remaining fuel under the overpressure of the
  • hydraulic jet atomization is supported by compressed air.
  • suction slots are proposed in the nozzle body transverse to the spray holes. Compressing air from the combustion chamber penetrates into these suction slots and the outgoing fuel jet is intended to mix with the air in the intake slots for improved combustion. In both cases, the improvement effect seems to be low, an air re-blowing and simple transverse slots are not enough.
  • the injection nozzle has two arranged above the nozzle needle seat partial pressure chambers for both Fuels. Two feed channels in the nozzle body lead the ignition fuel from a low pressure pump and the
  • Pressure line are fed, in the phase in which the high-pressure injection is carried out and the system is under a static pressure.
  • a second fuel pump As with the previously mentioned systems, here too is a second fuel pump
  • DE 195 29 826 describes an injection valve for a CR injection system with a solenoid valve control, wherein the control with compressed air from an exhaust gas turbocharger
  • air-assisted injection methods are also known, wherein conventional intake manifold injection valves are coupled to an air injector.
  • the fuel is atomized in the air injector to a mixture cloud and this mixture cloud into the combustion chamber
  • the method is therefore based on a lying outside the combustion chamber antechamber, a
  • the object of the invention is the object of the invention. It is also the object to provide a combined pressure pump for the supply of multiple media. This object is achieved in that the sealing conical seat of the nozzle needle is seen in the flow direction divided into an upper and a lower seat and in the intermediate groove, the compressed air or more,
  • microfine channels are provided in the upper seat, through which the high pressure supplied
  • To solve the invention task also includes the creation of a pressure pump in which the cylinders are installed for fuel and compressed air to form a unit and the drive is via a single drive / camshaft. Further embodiments are given in the following embodiment. embodiment
  • Fig. 1 The basic embodiment of the invention, shown on a seat hole injector.
  • Fig. 2 An analogous embodiment with a blind hole injection nozzle.
  • Fig. 3 shows another embodiment of an altered
  • Blind hole injector wherein the supply of gaseous substances is controlled by the stroke of the nozzle needle.
  • Fig. 4 is a schematic overview of the new
  • Fig. 1 is located in a nozzle body 1, the nozzle needle 2 with its cone tip 3 sealingly. It is raised abruptly or finely in the known manner by hydraulic pressure, or a piezo package, or another actuator and thus the ejection
  • the cone tip 3 is not continuous to the nozzle body 1, but through an air / gas groove 4, the cone tip 3 comes in two seats for concern and sealing, an upper seat 5 and a lower seat. 6
  • the highly pressurized fuel is supplied via the fuel space 7 of the cone tip 3, while the compressed air is introduced via the air channel 8 in the air / gas groove 4.
  • the fuel flowing in via the upper seat 5 first impacts on the compressed air in the air / gas groove 4 and under a first mixing of
  • gaseous media of the air / gas groove 4 can be supplied via an additional channel and thus for premixing, to break up the fuel molecules, but also to influence z. B. contribute to the NOx emission.
  • the upper seat 5 may have microfine longitudinal grooves 11 through which a minimum amount of fuel enters the air / gas groove 4 even when the seat 5 is closed.
  • the actual sealing edge of the nozzle needle 2 is located at the lower seat 6, including in the direction of the nozzle needle tip can, as especially in
  • FIG. 2 shows the means according to the invention on a blind-hole nozzle.
  • the injection holes 9 do not start from the apex 3, but from a blind hole 13.
  • the air / gas groove 4 can be made enlarged and has a favorable for the outflow of the fuel / air mixture shape. The rest of the procedure corresponds to the information given in FIG.
  • Fig. 3 is the example of a blind hole die
  • the nozzle needle 2 has - as a second needle guide - a low-backlash guided in the nozzle body 1 collar 14 with an annular groove 15. This is about transverse and longitudinal holes 16 with the air / gas groove 4 in combination.
  • the compressed air flows from the air channel 8 from the annular groove 15 and further the air / gas groove 4, with the effect of
  • the air supply can be controlled during the stroke of the nozzle needle 2, which is usually 0.2 mm - 0.3 mm.
  • Plug 17 closable. But this plug 17 may also include a nozzle bore, so that a permanent
  • Spray holes 9 is a positive effect.
  • the fuel is supplied from a fuel channel 18 to the lying here below the collar 14
  • Fuel space 7 At the height of the air / gas groove 4, a
  • Air accumulator 19 increase the volume of air held.
  • the additional channel 10 for the supply of other media - here in the annular groove 15 - is outside the leaf level, the three channels 8, 10 and 18 are then seen in the circumferential direction in the 120 ° distance. 4, the new injection system is shown in the overview. From the pump unit, consisting of a fuel pump 20 and a compressed air pump 21, go
  • the fuel pump 20 is supplied in a known manner by a backing pump, usually a submersible pump A, in the compressed air pump 21 may, for. B. pre-compressed air from a turbocharger B are fed.
  • a backing pump usually a submersible pump A
  • the compressed air pump 21 may, for. B. pre-compressed air from a turbocharger B are fed.
  • Compressed air pump 21 is connected to the cooling circuit C of the
  • the new injection system is not based in principle on the original air injection of the early diesel engines back. It remains in the hydraulic jet atomization, but it is an effective mixing of fuel and air by the inventive agents on the

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Les procédés d'injection pour moteurs diesel et moteurs à allumage commandé à injection directe sont aujourd'hui basés sur une pulvérisation de jet d'injection purement hydraulique. Dans le procédé d'allumage commandé à injection directe, une chambre de précombustion à assistance pneumatique peut être prévue. Afin d'améliorer la qualité de pulvérisation, les pressions de système sont de plus en plus élevées et sont supérieures à 2500 bars dans le cas de l'injection diesel. Il existe des limites mécaniques et physiques. La nouvelle solution consiste en l'alimentation d'air comprimé ou d'autres substances gazeuses dans une rainure d'air/de gaz (4) qui est disposée dans le corps d'injecteur (1) ou la pointe conique (3) de l'aiguille d'injecteur (2) directement à l'extrémité côté chambre de combustion de l'injecteur. La désintégration des molécules de carburant est facilitée efficacement par l'air comprimé ou encore il est possible d'insuffler un flux constant d'air à travers les trous d'injecteur (9). La solution selon l'invention concerne également une unité de pompes constituée d'une pompe à carburant (20) et d'une pompe à air comprimé (21).
EP16805046.6A 2015-11-26 2016-11-25 Système de carburant/d'air pour moteurs à combustion interne Withdrawn EP3380709A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015015518.0A DE102015015518B4 (de) 2015-11-26 2015-11-26 Kraftstoff/Luft-Einspritzsystem für Verbrennungsmotoren
PCT/EP2016/078878 WO2017089581A1 (fr) 2015-11-26 2016-11-25 Système de carburant/d'air pour moteurs à combustion interne

Publications (1)

Publication Number Publication Date
EP3380709A1 true EP3380709A1 (fr) 2018-10-03

Family

ID=57460488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16805046.6A Withdrawn EP3380709A1 (fr) 2015-11-26 2016-11-25 Système de carburant/d'air pour moteurs à combustion interne

Country Status (3)

Country Link
EP (1) EP3380709A1 (fr)
DE (1) DE102015015518B4 (fr)
WO (1) WO2017089581A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020139435A (ja) * 2019-02-27 2020-09-03 株式会社デンソー 流体噴射装置
JP2020159333A (ja) * 2019-03-28 2020-10-01 株式会社デンソー 流体噴射装置及び流体噴射システム
DE102021132041A1 (de) 2021-12-06 2023-06-07 POLYTEC - SCIENCE GmbH Kraftstoff-/Luft-Einspritzsystem für Verbrennungsmotoren, Turbinentriebwerke und andere Zerstäubungssysteme
CN115013204A (zh) * 2022-06-20 2022-09-06 江苏大学 一种双燃料涡流喷嘴

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR485691A (fr) * 1917-06-05 1918-01-29 Willans & Robinson Ltd Perfectionnements dans les dispositifs pour injecter le combustible dans les cylindres des moteurs à combustion interne
US1559759A (en) * 1921-08-13 1925-11-03 Muller Friedrich Fuel-injection valve for internal-combustion engines
US1586006A (en) 1923-04-30 1926-05-25 Rochefort Francois Device for injecting, pulverizing, and vaporizing fuel in internalcombustion engines
FR668801A (fr) * 1928-05-18 1929-11-07 Installation De Lumiere Et De Dispositif d'injection d'air et de combustible pour moteur à combustion interne
GB431657A (en) 1934-03-03 1935-07-12 Paul James Reynolds Improvements in fuel injection valves for internal combustion engines
US3215080A (en) * 1963-03-04 1965-11-02 Bernard John Springer Multiple delivery pump apparatus
US4197709A (en) 1978-06-09 1980-04-15 Hochstein Peter A Thermal energy scavenger (stress limiter)
US4408574A (en) * 1978-10-25 1983-10-11 Josef Schaich Method and apparatus for forming fuel-air mixture in an internal combustion engine
DE2922682A1 (de) 1979-06-02 1980-12-04 Daimler Benz Ag Einspritzduese fuer luftverdichtende einspritzbrennkraftmaschinen
DE2924128A1 (de) 1979-06-15 1980-12-18 Motoren Werke Mannheim Ag Einrichtung zur einspritzung von zuendkraftstoff einerseits und zuendunwilligem hauptkraftstoff andererseits fuer dieselmotoren
DE2932325C2 (de) 1979-08-09 1986-04-30 Institut für Motorenbau Prof. Huber e.V., 8000 München Einspritzpumpe für eine Brennkraftmaschine
DE3117796A1 (de) 1981-05-06 1982-11-25 Klöckner-Humboldt-Deutz AG, 5000 Köln Einspritzsystem zum einspritzen zweier brennstoffe durch eine einspritzduese
DE3241679A1 (de) 1982-11-11 1984-05-17 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Einspritzeinrichtung, insbesondere bei direkteinspritzenden dieselmotoren
DE3310049A1 (de) 1983-03-19 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzeinrichtung zur einspritzung einer aus mindestens zwei komponenten bestehenden kraftstoffmischung
DE3533014A1 (de) 1985-09-16 1987-03-26 Avl Verbrennungskraft Messtech Verfahren und einrichtung zur einbringung des kraftstoffes in den brennraum eines dieselmotors
DE3540780A1 (de) 1985-11-16 1987-05-21 Deutsche Forsch Luft Raumfahrt Einspritzvorrichtung fuer einspritzmotoren
DE3724987A1 (de) 1986-07-30 1988-02-11 Elsbett L Einspritzvorrichtung zum einbringen von kraftstoffen in den brennraum einer brennkraftmaschine
JP2757338B2 (ja) * 1989-01-12 1998-05-25 株式会社ゼクセル 二流体噴射装置
DE19529826C1 (de) 1995-08-12 1996-12-12 Mtu Friedrichshafen Gmbh Einspritzventil für Common-Rail-Einspritzsysteme
AT2164U3 (de) 1997-08-07 1999-02-25 Avl List Gmbh Einspritzdüse für eine direkt einspritzende brennkraftmaschine
DE102008053438A1 (de) * 2008-10-28 2010-04-29 Lintra Gmbh Verfahren und Vorrichtung zur Optimierung von Verbrennungsluft

Also Published As

Publication number Publication date
DE102015015518A1 (de) 2017-06-14
DE102015015518B4 (de) 2023-04-27
WO2017089581A1 (fr) 2017-06-01

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