EP0460572A1 - Einspritzgerät für einen Verbrennungsmotor - Google Patents

Einspritzgerät für einen Verbrennungsmotor Download PDF

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Publication number
EP0460572A1
EP0460572A1 EP91109031A EP91109031A EP0460572A1 EP 0460572 A1 EP0460572 A1 EP 0460572A1 EP 91109031 A EP91109031 A EP 91109031A EP 91109031 A EP91109031 A EP 91109031A EP 0460572 A1 EP0460572 A1 EP 0460572A1
Authority
EP
European Patent Office
Prior art keywords
injection
fuel
holes
cones
jets
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
EP91109031A
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English (en)
French (fr)
Other versions
EP0460572B1 (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 possibly different from the main injection fuel.
  • the problem can arise as follows: The operation of the engine at high load, with a fuel with low self-ignition power but relatively inexpensive, is satisfactory.
  • An object of the invention is to provide an injection device in which one can "delay" as much as possible the instant when it It is necessary to use a pre-injection fuel with high self-ignition power, the amount of 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 united in the same body or located in separate bodies, one used for pre-injection. of fuel, the other at the main fuel injection, the fuels being different or not, said sprayers being located close to each other in the vicinity of the center of the cylinder head, provided with equidistant fuel spray holes or not and controlled by separate needles, characterized in that the pre-injection sprayer has a series of holes whose axes rest on a first cone and the main injection sprayer has a series of holes whose number is double that of the pre-injection sprayer and whose axes are supported by a second cone, the relative position of the cones, the angle of each cone and the o orientation of the axes of the holes on the cones being chosen such 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
  • the holes of the pre-injection sprayer comprise, in the direction of the 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 (4a, 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.

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)
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 true EP0460572A1 (de) 1991-12-11
EP0460572B1 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1929868A2 (de) 2002-03-01 2008-06-11 Basf Se Fungizide Mischungen auf der Basis von Prothioconazole und einem Strobilurinderivat
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

Families Citing this family (11)

* 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
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

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1426578A (fr) * 1964-03-09 1966-01-28 Lister & Co Ltd R A Injecteur pour moteurs à combustion interne
FR2006797A1 (de) * 1968-04-24 1970-01-02 Sulzer Ag
FR2463861A1 (fr) * 1979-08-23 1981-02-27 Nissan Motor Injecteur de carburant pour moteur diesel
GB2068460A (en) * 1980-01-31 1981-08-12 Maschf Augsburg Nuernberg Ag Fuel injection into ic engine piston combustion chambers
DE3214096A1 (de) * 1981-04-16 1982-11-11 Nippon Soken, Inc., Nishio, Aichi Dieselmotor
US4612898A (en) * 1985-01-11 1986-09-23 Sulzer Brothers Limited Cylinder head for a piston internal combustion engine
DE3742759A1 (de) * 1987-03-17 1988-09-29 Sulzer Ag Einrichtung zum einspritzen von dieseloel als zuendoel und von fluessigem hauptbrennstoff
EP0309590A1 (de) * 1987-04-07 1989-04-05 Kabushiki Kaisha Komatsu Seisakusho Verbrennungsmotor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
US4612989A (en) * 1985-06-03 1986-09-23 Exxon Production Research Co. Combined replacement drive process for oil recovery

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1426578A (fr) * 1964-03-09 1966-01-28 Lister & Co Ltd R A Injecteur pour moteurs à combustion interne
FR2006797A1 (de) * 1968-04-24 1970-01-02 Sulzer Ag
FR2463861A1 (fr) * 1979-08-23 1981-02-27 Nissan Motor Injecteur de carburant pour moteur diesel
GB2068460A (en) * 1980-01-31 1981-08-12 Maschf Augsburg Nuernberg Ag Fuel injection into ic engine piston combustion chambers
DE3214096A1 (de) * 1981-04-16 1982-11-11 Nippon Soken, Inc., Nishio, Aichi Dieselmotor
US4612898A (en) * 1985-01-11 1986-09-23 Sulzer Brothers Limited Cylinder head for a piston internal combustion engine
DE3742759A1 (de) * 1987-03-17 1988-09-29 Sulzer Ag Einrichtung zum einspritzen von dieseloel als zuendoel und von fluessigem hauptbrennstoff
EP0309590A1 (de) * 1987-04-07 1989-04-05 Kabushiki Kaisha Komatsu Seisakusho Verbrennungsmotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 313 (M-437)(2036) 10 décembre 1985, & JP-A-60 147525 (MITSUBISHI JUKOGYO) 03 août 1985, *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1929868A2 (de) 2002-03-01 2008-06-11 Basf Se Fungizide Mischungen auf der Basis von Prothioconazole und einem Strobilurinderivat
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
WO2012143625A3 (fr) * 2011-04-21 2012-12-20 IFP Energies Nouvelles Procédé de contrôle de l'injection de carburant dans un moteur à combustion interne à injection directe, notamment de type diesel

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
EP0460572B1 (de) 1994-04-20
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
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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