EP0460572B1 - Einspritzgerät für einen Verbrennungsmotor - Google Patents

Einspritzgerät für einen Verbrennungsmotor Download PDF

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Publication number
EP0460572B1
EP0460572B1 EP91109031A EP91109031A EP0460572B1 EP 0460572 B1 EP0460572 B1 EP 0460572B1 EP 91109031 A EP91109031 A EP 91109031A EP 91109031 A EP91109031 A EP 91109031A EP 0460572 B1 EP0460572 B1 EP 0460572B1
Authority
EP
European Patent Office
Prior art keywords
injection
fuel
holes
spray head
main
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.)
Expired - Lifetime
Application number
EP91109031A
Other languages
English (en)
French (fr)
Other versions
EP0460572A1 (de
Inventor
Jean-Louis Leroy
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.)
MAN Energy Solutions France SAS
Original Assignee
SEMT Pielstick SA
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 SEMT Pielstick SA filed Critical SEMT Pielstick SA
Publication of EP0460572A1 publication Critical patent/EP0460572A1/de
Application granted granted Critical
Publication of EP0460572B1 publication Critical patent/EP0460572B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—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
    • 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
    • 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
    • F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to an injection device for an internal combustion engine, more particularly for a diesel engine, using a main injection fuel and a pre-injection fuel which may be different from the main injection fuel.
  • Document DE-A-37 42 759 shows a fuel injection device for an internal combustion engine according to the preamble of claim 1.
  • An object of the invention is to provide an injection device in which it is possible to "delay" as much as possible the instant when it is necessary to use a pre-injection fuel with high self-ignition power, the quantity pre-injection fuel should be as low as possible for economic reasons.
  • the object of the present invention is to provide an injection device which allows the engine to operate with a fuel with low self-ignition power within a wider range.
  • the subject of the invention is a fuel injection device for an internal combustion engine, in particular for a diesel engine, of the type comprising two sprayers, one used for the pre-injection of fuel, the other for the main injection. of fuel, said sprayers being located close to each other in the vicinity of the center of the cylinder head, provided with fuel spraying holes and controlled by separate needles, device in which the pre-injection sprayer comprises a series holes whose axes are supported on a first cone and the main injection sprayer has a series of holes whose axes are supported on a second cone; characterized in that the number of holes in the main injection sprayer is twice that of the pre-injection sprayer and the relative position of the cones, the angle of each of the cones and the orientation of the axes of the holes on the cones are chosen so that in an area located substantially mid-length of the main injection jets, the distances between each of the pre-injection jets and the two associated main injection jets are minimal and substantially equal.
  • the holes of the pre-injection sprayer comprise, in the direction of flow of the fuel, a cylindrical part and a frustoconical part, the flaring of the frustoconical part being situated on the combustion chamber side, and the length of the conical part being less than 80% of the thickness of the wall.
  • FIG. 1 is a diagram illustrating the distribution of the pre-injection and main injection jets inside the combustion chamber.
  • Figure 2 is a schematic perspective view illustrating the relative arrangement of the main jets and the pre-injection jets.
  • Figure 3 shows a partial section of the pre-injection sprayer.
  • Figure 1 shows a half cross section of the combustion chamber (1) of an internal combustion engine equipped with the device according to the invention.
  • a main injection sprayer (2) In the vicinity of the center of the combustion chamber are shown schematically a main injection sprayer (2) and a pre-injection sprayer (3).
  • the main injection sprayer is provided with a series of axis holes (a, 5a, 6a, 7a) equidistant from an angle (A) and the pre-injection sprayer is provided with a series of holes d axis (8a, 9a) equidistant from an angle (B).
  • the number of holes in the main injection sprayer is twice that of the pre-injection sprayer.
  • the fuel is injected in the form of jets shown diagrammatically in (4b, 5b, 6b 7b) for the main injection and in (8b, 9b) for the pre-injection.
  • the relative orientation of the two sets of holes as well as the angle of the cones on which the axes of the holes are supported are chosen so as to minimize the distance between the jets (8b) and (9b) and the zones (4c), (5c), (6c) and (7c) located substantially mid-length of the main injection jets, as can be seen in Figure 2.
  • Figure 3 shows a partial section of the wall of the pre-injection sprayer to the right of the axis hole (8a).
  • the hole consists of two parts, a cylindrical part (10) followed, in the direction of the flow of the fuel, a conical part (11) whose flare is turned towards the combustion chamber.
  • the presence of the conical part makes it possible to obtain a better spraying of the fuel distributed in a cone of angle (C) larger than that which would be obtained with a hole only cylindrical.
  • the distribution of the pre-injection and main injection jets combined with the use of frustoconical pre-injection holes in accordance with the invention makes it possible to extend the operating range with a single fuel with low self-ignition power. towards low loads and low speeds when this is used for both pre-injection and main injection.
  • a pre-injection fuel with high self-ignition power should be used.
  • two sprayers are used which are united in the same body, known for example from American patent n ° 4524737.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)

Claims (2)

  1. Brennstoff-Einspritzvorrichtung für einen Verbrennungsmotor, insbesondere für einen Dieselmotor, der zwei Zerstäuber aufweist, von denen der eine zur Brennstoff-Voreinspritzung und der andere zur Brennstoff-Haupteinspritzung dient, wobei die Zerstäuber nahe beieinander in der Nähe des Zentrums des Zylinderkopfs angeordnet und mit Brennstoff-Zerstäubungslöchern versehen sind und von getrennten Nadeln gesteuert werden, wobei der Voreinspritz-Zerstäuber eine Reihe von Löchern aufweist, deren Achsen (8a, 9a) auf einem ersten Kegel aufliegen, während der Haupteinspritz-Zerstäuber (2) eine Reihe von Löchern aufweist, deren Achsen (5a, 6a, 7a) auf einem zweiten Kegel aufliegen, dadurch gekennzeichnet, daß die Anzahl von Löchern des Haupteinspritz-Zerstäubers (2) doppelt so groß ist wie die des Voreinspritz-Zerstäubers und daß die relative Position der Kegel, der Winkel jedes der Kegel und die Ausrichtung der Achsen der Löcher auf die Kegel so gewählt sind, daß in einem Bereich im wesentlichen auf halber Länge der Haupteinspritz-Strahlen die Entfernungen zwischen jedem der Voreinspritz-Strahlen und den beiden zugehörigen Haupteinspritz-Strahlen minimal und im wesentlichen gleich sind.
  2. Brennstoffeinspritzvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Löcher des Voreinspritz-Zerstäubers (3) in Richtung des Brennstoff-Flusses einen zylindrischen (10) und einen kegelstumpfförmigen Bereich (11) aufweisen, wobei die Ausweitung des kegelstumpfförmigen Bereichs sich auf der Seite der Brennkammer befindet, und die Länge des kegelförmigen Bereichs geringer als 80% der Dicke der Wand ist.
EP91109031A 1990-06-07 1991-06-03 Einspritzgerät für einen Verbrennungsmotor Expired - Lifetime EP0460572B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9007097 1990-06-07
FR9007097A FR2663084B1 (fr) 1990-06-07 1990-06-07 Dispositif d'injection pour moteur a combustion interne.

Publications (2)

Publication Number Publication Date
EP0460572A1 EP0460572A1 (de) 1991-12-11
EP0460572B1 true EP0460572B1 (de) 1994-04-20

Family

ID=9397376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109031A Expired - Lifetime EP0460572B1 (de) 1990-06-07 1991-06-03 Einspritzgerät für einen Verbrennungsmotor

Country Status (10)

Country Link
US (1) US5167210A (de)
EP (1) EP0460572B1 (de)
JP (1) JP3084091B2 (de)
CN (1) CN1023827C (de)
DE (1) DE69101739T2 (de)
DK (1) DK0460572T3 (de)
FI (1) FI104204B1 (de)
FR (1) FR2663084B1 (de)
NO (1) NO178981C (de)
RU (1) RU2059864C1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940004707Y1 (ko) * 1992-08-21 1994-07-20 박영민 와이셔츠 칼라의 수축방지기
CN1058322C (zh) * 1996-06-26 2000-11-08 金剑 一种内燃机的喷油方法和一种机械联动换向阀
US6125796A (en) * 1998-02-18 2000-10-03 Caterpillar Inc. Staged injection of an emulsified diesel fuel into a combustion chamber of a diesel engine
SE521018C2 (sv) 1998-04-01 2003-09-23 Scania Cv Ab Förbränningsmotor med direktinsprutning
DE19922964C2 (de) * 1999-05-19 2003-03-27 Daimler Chrysler Ag Verfahren zum Einspritzen von Dieselkraftstoff
MD1841G2 (ro) * 1999-12-28 2002-07-31 Виктор ЗАГОРОДНЮК Motor cu ardere internă
DE10026321A1 (de) * 2000-05-26 2001-11-29 Bosch Gmbh Robert Brennstoffeinspritzsystem und Verfahren zum Einspritzen
AU2003210354B9 (en) 2002-03-01 2008-11-20 Basf Se Fungicidal mixtures based on prothioconazole and a strobilurin derivative
FR2974391A1 (fr) * 2011-04-21 2012-10-26 IFP Energies Nouvelles Procede de controle de l'injection de carburant dans un moteur a combustion interne a injection directe, notamment de type diesel
US8869770B2 (en) * 2011-06-17 2014-10-28 Caterpillar Inc. Compression ignition engine having fuel system for non-sooting combustion and method
JP5855270B2 (ja) * 2012-10-23 2016-02-09 三菱電機株式会社 燃料噴射弁
JP2015078603A (ja) * 2013-10-15 2015-04-23 三菱電機株式会社 燃料噴射弁
CN117028016B (zh) * 2023-10-09 2024-01-12 潍柴动力股份有限公司 缸内直喷甲醇发动机及其燃烧室、燃烧室参数确定方法

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
GB1088666A (en) * 1964-03-09 1967-10-25 Lister & Co Ltd R A Improvements in or relating to fuel injectors for internal combustion engines
CH491289A (de) * 1968-04-24 1970-05-31 Sulzer Ag Brennstoffdüse eine Brennstoffeinspritzventiles für eine Kolbenbrennkraftmaschine
SE409492B (sv) * 1977-11-23 1979-08-20 Volvo Ab Brensleinsprutningssystem for dieselmotorer
DE2901210C2 (de) * 1979-01-13 1984-01-12 Klöckner-Humboldt-Deutz AG, 5000 Köln Verfahren zum Betrieb einer luftverdichtenden, selbstzündenden Brennkraftmaschine
JPS601266Y2 (ja) * 1979-08-23 1985-01-14 日産自動車株式会社 デイ−ゼルエンジンの燃料噴射ノズル
DE3003411C2 (de) * 1980-01-31 1983-07-28 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Selbstzündende Hubkolben-Brennkraftmaschine
JPS57171026A (en) * 1981-04-16 1982-10-21 Nippon Soken Inc Direct injection type diesel engine
DE3151293A1 (de) * 1981-12-24 1983-07-07 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzsystem fuer kraftstoffdirekteinspritzung bei brenn-kraftmaschinen
DE3330771A1 (de) * 1983-08-26 1985-03-14 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzeinrichtung mit hilfspumpe zur vor- und haupteinspritzung
JPH0637851B2 (ja) * 1984-01-10 1994-05-18 三菱重工業株式会社 デイーゼル機関の燃焼装置
CH665453A5 (de) * 1985-01-11 1988-05-13 Sulzer Ag Zylinderdeckel fuer eine kolbenbrennkraftmaschine.
US4612989A (en) * 1985-06-03 1986-09-23 Exxon Production Research Co. Combined replacement drive process for oil recovery
CH672661A5 (de) * 1987-03-17 1989-12-15 Sulzer Ag
US4919093A (en) * 1987-04-07 1990-04-24 Kabushiki Kaisha Komatsu Seisakusho Internal combustion engine

Also Published As

Publication number Publication date
FI104204B (fi) 1999-11-30
NO912148L (no) 1991-12-09
NO178981C (no) 1996-07-10
FR2663084B1 (fr) 1992-07-31
DE69101739T2 (de) 1994-08-04
NO912148D0 (no) 1991-06-05
NO178981B (no) 1996-04-01
CN1057094A (zh) 1991-12-18
US5167210A (en) 1992-12-01
FI104204B1 (fi) 1999-11-30
FI912706A0 (fi) 1991-06-05
JPH04279757A (ja) 1992-10-05
CN1023827C (zh) 1994-02-16
EP0460572A1 (de) 1991-12-11
FR2663084A1 (fr) 1991-12-13
DK0460572T3 (da) 1994-07-25
FI912706A (fi) 1991-12-08
RU2059864C1 (ru) 1996-05-10
JP3084091B2 (ja) 2000-09-04
DE69101739D1 (de) 1994-05-26

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