EP0308855A2 - Buse d'injection de combustible - Google Patents

Buse d'injection de combustible Download PDF

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Publication number
EP0308855A2
EP0308855A2 EP88115339A EP88115339A EP0308855A2 EP 0308855 A2 EP0308855 A2 EP 0308855A2 EP 88115339 A EP88115339 A EP 88115339A EP 88115339 A EP88115339 A EP 88115339A EP 0308855 A2 EP0308855 A2 EP 0308855A2
Authority
EP
European Patent Office
Prior art keywords
nozzle
disintegrator
channel
fuel
nozzle according
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Withdrawn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
EP88115339A
Other languages
German (de)
English (en)
Other versions
EP0308855A3 (fr
Inventor
Gregory Khinchuk
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 EP0308855A2 publication Critical patent/EP0308855A2/fr
Publication of EP0308855A3 publication Critical patent/EP0308855A3/fr
Withdrawn legal-status Critical Current

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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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • 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
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/06—Fuel-injection apparatus having means for preventing coking, e.g. of fuel injector discharge orifices or valve needles

Definitions

  • the invention relates to a fuel injector for diesel engines according to the preamble of the main claim.
  • Injection nozzles of this type are known, for example, from US Pat. No. 4,666,088.
  • the fuel is injected under high pressure into the combustion chamber and into the high-temperature air charge located therein.
  • the injection is carried out with a single or multiple perforated nozzle.
  • Such nozzles are known from US-A-4,106,702, 4,139,158 and 4,200,237.
  • the essential operating characteristics of diesel engines, such as fuel consumption, thermal and mechanical loads, exhaust gas emissions, are significantly influenced by the fuel-air mixture in the combustion process.
  • the degree of the fuel-air mixture depends on the design and operating variables, namely the injection speed of the fuel, the geometry of the combustion chamber, the air batch movement and the nozzle configuration.
  • One of the most important characteristics of the fuel nozzle is the spray jet formation or the physical characteristics of the spray jet, as well as the fact that a correct mixture of fuel and air is ensured in relation to space and time.
  • the fuel jet generated by a conventional fuel injection nozzle consists of a very compact central spray jet or spray cores and of a finely divided peripheral area. Such a nozzle therefore usually leads to a good fuel distribution only in the peripheral region of the fuel jet, which leads to a relatively fuel-rich mixture in the core.
  • the invention is therefore based on the object to improve a fuel injection nozzle of the type mentioned in such a way that the fine distribution and thus the distribution of the fuel in the air charge present in the combustion chamber can be further optimized with such a nozzle in order to achieve maximum effectiveness and maximum To achieve fuel combustion, with the proviso that at the same time create further training opportunities that counteract the formation of carbon deposits inside the exhaust ducts.
  • This solution according to the invention optimizes the distribution process of the fuel jet that emerges from the orifices significantly and improves the mixing of the fuel with the air.
  • the nozzle design according to the invention allows the following: - Optimization of the spray jet design by choosing the dimension and shape of the fuel disintegrator. - Achieving a better distribution of the fuel in relation to a relatively low injection pressure. -Reduction of the sensitivity of the fuel injection system to the operating conditions. - Further training of the nozzle with a larger diameter of the nozzle and also in an advantageous development - Avoid formation of deposits in the outlet openings.
  • the nozzle consists of the nozzle body 1 with the nozzle head 2 and a control valve 4 arranged axially in the nozzle body 1.
  • This control valve 4 (valve tappet) works together with the valve seat 15 in order to be able to regulate the fuel flowing into a chamber 19, which flows from a fuel tank, not shown, through line 16.
  • the nozzle head 2 is provided with nozzle ducts 3 which extend from the chamber 20 to the outer surface of the nozzle head 2 and open into the combustion chamber (not shown).
  • Disintegrator 5 which extends with its essential part in front of the mouths 3', in the region of the spray jet 7, as indicated in Fig. 1 .
  • This disintegrator 5 is formed from a wire 9 which, in the exemplary embodiment shown, extends within a chamber 20 and through the nozzle channels 3.
  • the shape and dimensions of the ends of the disintegrator 5 depend on the desired or given spray jet configuration.
  • the disintegrator has the shape of a cylindrical coil spring 10, which can also be a conical spring.
  • the outer diameter of the cylindrical coil spring 10 is larger than the diameter of the mouth 3 '.
  • the fuel flows under high pressure, caused by an injection pump, through the line 16 into the nozzle body 1 and reaches the pressure chamber 19.
  • the fuel under pressure exerts a sufficient force on the differential surface 14 of the valve 4 under counterpressure ,
  • the valve 4 is lifted from its seat 15, as a result of which the fuel gets into the exhaust ducts 3 and from there into the combustion chamber with the formation of the spray jet 7.
  • the fuel flow leaves the orifices 3 ', it meets the disintegrator 5 and is broken up into a large number of fine particles, which leads to a conical somewhat hollow spray cone, which greatly increases the total surface area of the fuel. Because of this distribution, the mixing of the fuel with the air charge present in the combustion chamber is greatly improved.
  • the disintegrator is not only present at one point in the spray jet, but due to its special design it has multiple spatial dimensions is structured in relation to the spray jet, and so that the spray jet droplets repeatedly encounter obstacles which further divide the droplets.
  • the distribution effect is thereby increased, and this is also essential that the surface of the disintegrator 5 is arranged practically at all points with respect to the longitudinal central axis 6 of the audio channel 3, whereby the divided fine droplets continue to fly in all directions.
  • This improved mixing leads to a more complete combustion of the fuel with a simultaneous reduction in smoke formation and fuel consumption.
  • the movement of the disintegrator 5 within the nozzle channels 3 counteracts the formation of carbon deposits on the opening walls of these openings, ie it occurs Self-cleaning effect.
  • FIGS. 2 to 5 corresponding elements which have the same functions as those described above according to FIG. 1 are provided with the same reference symbols.
  • the embodiment according to FIG. 2 differs from the one described above according to FIG. 1 in that the nozzle channel 3 has an enlarged, internally threaded section 11, in which the disintegrator 5, correspondingly coiled, is screwed in.
  • an uncoiled part 8 of the coil spring 10 is bent, passes through the interior of the spring 10 and the nozzle channel 3, which leads into the chamber 20.
  • the disintegrators 5 extend into the combustion chamber in the direction of the longitudinal central axis 6 of the nozzle channels 3. During operation, these disintegrators 5 allow the fuel flow to pass through the nozzle channels 3 without changing direction.
  • the nozzle body 1 has an external thread 21 and that directly above the nozzle head 2.
  • the disintegrator 5 also has the shape of a cylindrical coil spring 10 ', which is screwed onto the external thread 21 of the nozzle body 1 and surrounds the nozzle head 2.
  • the coil spring 10 'could also be conical to the nozzle head 2 converging.
  • the disintegrator 5 is arranged coaxially to the longitudinal center axis 12 of the nozzle body 1, the condition is also fulfilled that the disintegrator is located at a large number of points in the fuel jet and its surface is inclined to the jet practically at all points.
  • the disintegrator 5 can be designed in the form of a double-layer coil spring 10, the two spring layers 10 ⁇ being associated with one another at a distance and concentrically. If the two spring layers 10 ⁇ are not made of one part, which is readily possible, the inner layer 10 ⁇ is also attached to the nozzle body 1 in a suitable manner. As shown in Fig. 5, there is also the possibility in this embodiment, the free ends of the two spring layers 10 ⁇ in the form of extensions 13 to engage in the Ausdüskanal 3, in order to let the self-cleaning effect take effect.
  • the nozzle head 2 is surrounded by a disintegrator 5, which is formed from a fine wire mesh screen.
  • This disintegrator 5 is held on the nozzle head 2, for example by means of a retaining ring 17, which is seated in a corresponding groove.
  • This screen can be cylindrical, conical or, as shown, curved and, if necessary, can also be provided and arranged in two or more layers in the sense of FIG.
  • projections 13 protruding into the nozzle channels 3 could also be provided, which are connected in a suitable manner to the wire mesh screen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP88115339A 1987-09-21 1988-09-19 Buse d'injection de combustible Withdrawn EP0308855A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98689 1987-09-21
US07/098,689 US4796816A (en) 1987-09-21 1987-09-21 Impinging-jet fuel injection nozzle

Publications (2)

Publication Number Publication Date
EP0308855A2 true EP0308855A2 (fr) 1989-03-29
EP0308855A3 EP0308855A3 (fr) 1990-07-25

Family

ID=22270486

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115339A Withdrawn EP0308855A3 (fr) 1987-09-21 1988-09-19 Buse d'injection de combustible

Country Status (2)

Country Link
US (1) US4796816A (fr)
EP (1) EP0308855A3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932374A (en) * 1989-06-21 1990-06-12 General Motors Corporation Fuel injector nozzle for internal combustion engine
US5435884A (en) * 1993-09-30 1995-07-25 Parker-Hannifin Corporation Spray nozzle and method of manufacturing same
DK0692625T3 (da) * 1994-07-15 2000-04-17 Wortsilo Nsd Schweiz Ag Dysehoved til en brændstofindsprøjtningsdyse
US5713327A (en) * 1997-01-03 1998-02-03 Tilton; Charles L. Liquid fuel injection device with pressure-swirl atomizers
US5853129A (en) * 1997-03-25 1998-12-29 Spitz; Albert W. Spray nozzle
US6145496A (en) * 1998-04-07 2000-11-14 Siemens Automotive Corporation Fuel injector with porous element for atomizing fuel under air pressure
DE10124744A1 (de) * 2001-05-21 2003-01-23 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10350548A1 (de) * 2003-10-29 2005-06-02 Robert Bosch Gmbh Brennstoffeinspritzventil
TR200504275A1 (tr) * 2005-10-26 2007-10-22 Robert Bosch Gmbh Konik yakıt kanallı enjektör sistemi.
US9790906B2 (en) * 2014-08-15 2017-10-17 Continental Automotive Systems, Inc. High pressure gasoline injector seat to reduce particle emissions
CN106150820A (zh) * 2016-07-12 2016-11-23 江西汇尔油泵油嘴有限公司 扰动柴油的方法以及喷油嘴
CN110449003A (zh) * 2019-08-09 2019-11-15 苏州匹丝软件设计有限公司 一种气态性废气脱硫装置

Family Cites Families (22)

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Publication number Priority date Publication date Assignee Title
US244740A (en) * 1881-07-26 Open cap for bottles
US1089406A (en) * 1914-03-10 Warren Webster & Co Spray-nozzle.
US1305411A (en) * 1919-06-03 Water-sprinkler
GB558928A (en) * 1941-08-26 1944-01-27 Martin Motors Inc Improvements in injection nozzles for internal combustion engines
US2704174A (en) * 1952-01-23 1955-03-15 Eduard Haas Drop catching device for pouring liquids
CH340093A (de) * 1956-05-12 1959-07-31 Sulzer Ag Brennstoffeinspritzdüse und Verfahren zu deren Herstellung
US3339848A (en) * 1965-10-20 1967-09-05 Int Harvester Co Fuel injection nozzle
US3425635A (en) * 1967-02-15 1969-02-04 Int Harvester Co Fuel injection nozzle
US3391871A (en) * 1967-03-30 1968-07-09 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
US4139158A (en) * 1975-09-01 1979-02-13 Diesel Kiki Co., Ltd. Fuel discharge nozzle
US4057190A (en) * 1976-06-17 1977-11-08 Bendix Corporation Fuel break-up disc for injection valve
US4106702A (en) * 1977-04-19 1978-08-15 Caterpillar Tractor Co. Fuel injection nozzle tip with low volume tapered sac
DE2726074A1 (de) * 1977-06-10 1978-12-21 Maschf Augsburg Nuernberg Ag Kraftstoff-einspritzduese
DE3023757A1 (de) * 1980-06-25 1982-01-21 Robert Bosch Gmbh, 7000 Stuttgart Einspritzventil
SU1183186A1 (ru) * 1982-04-07 1985-10-07 Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Гидротехники Им.Б.Е.Веденеева Разбрызгивающее устройство
GB2144178B (en) * 1983-07-28 1987-03-25 Lucas Ind Plc I.c. engine fuel injector
DE3411337A1 (de) * 1984-03-28 1985-10-10 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzventil
JPS61104156A (ja) * 1984-10-26 1986-05-22 Nippon Denso Co Ltd 電磁式燃料噴射弁
US4715541A (en) * 1985-02-26 1987-12-29 Steyr-Daimler-Puch Ag Fuel injection nozzle for combustion engines
US4693424A (en) * 1985-07-15 1987-09-15 General Motors Corporation Poppet covered orifice fuel injection nozzle
JPS62248867A (ja) * 1986-04-21 1987-10-29 Nippon Denso Co Ltd 燃料噴射弁
GB8611950D0 (en) * 1986-05-16 1986-06-25 Lucas Ind Plc Gasoline injector

Also Published As

Publication number Publication date
EP0308855A3 (fr) 1990-07-25
US4796816A (en) 1989-01-10

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