EP1197650B1 - Procédé d'injection de combustible - Google Patents

Procédé d'injection de combustible Download PDF

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Publication number
EP1197650B1
EP1197650B1 EP01810878A EP01810878A EP1197650B1 EP 1197650 B1 EP1197650 B1 EP 1197650B1 EP 01810878 A EP01810878 A EP 01810878A EP 01810878 A EP01810878 A EP 01810878A EP 1197650 B1 EP1197650 B1 EP 1197650B1
Authority
EP
European Patent Office
Prior art keywords
fuel
injected
combustion chamber
accordance
during
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
EP01810878A
Other languages
German (de)
English (en)
Other versions
EP1197650A1 (fr
Inventor
Klaus Heim
Thomas Häni
Alois Bitterli
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.)
Wartsila NSD Schweiz AG
Original Assignee
Wartsila NSD Schweiz AG
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Publication date
Application filed by Wartsila NSD Schweiz AG filed Critical Wartsila NSD Schweiz AG
Priority to EP01810878A priority Critical patent/EP1197650B1/fr
Publication of EP1197650A1 publication Critical patent/EP1197650A1/fr
Application granted granted Critical
Publication of EP1197650B1 publication Critical patent/EP1197650B1/fr
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
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/242—Arrangement of spark plugs or 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
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump

Definitions

  • the invention relates to a method for injecting fuel into the Combustion chamber of a cylinder of a reciprocating internal combustion engine Diesel type at partial load operation according to the Obergebriff of claim 1.
  • the document EP 0 775 821 discloses a method for injecting Fuel in the combustion chamber of a cylinder of a slow-moving Diesel type two-stroke reciprocating internal combustion engine known Fuel enters the combustion chamber with two to four fuel injectors injected, with the injectors over the entire load range constantly are in operation. In particular, during the partial load operation is the for a Power stroke certain amount of fuel by means of only one injector injected, and in the next stroke the amount of fuel through the second injector injected so that through each injector alternately during each one stroke the required Fuel quantity is injected.
  • a disadvantage of this injection method is the fact that in particular incomplete combustion occurs during partial load operation in the combustion chamber, so that the combustion gases have a high proportion of visible smoke, in English as "visible smoke” referred.
  • the reciprocating internal combustion engine the diesel type to operate so that they are a more advantageous Running behavior has.
  • the object is achieved in particular with a method for injecting of fuel into the combustion chamber of a cylinder one Diesel type reciprocating internal combustion engine at part load operation, wherein each combustion chamber are associated with at least two injection nozzles by the Fuel is injected alternately such that during at least two consecutive working cycles with at least one No fuel is injected into the injectors, and that afterward during at least two successive working cycles of the no injector fuel is injected.
  • This method allows a higher zone in the combustion chamber To produce temperature.
  • the Fuel for a period of at least three minutes, preferably between 10 and 30 minutes, from the same injector or injected asymmetrically from the same injectors to thereby in the longer term to produce a higher temperature in the combustion zone.
  • An advantage of this method is that the number of thermal Load change compared to that in EP 0 775 821 disclosed method is reduced, which is favorable to the Material fatigue affects.
  • the locally higher temperature in and around the Combustion zone causes a reduction of the visible smoke.
  • the Injecting the fuel with only one nozzle has the advantage that the Fuel is injected longer over this nozzle, resulting in a stable, reproducible injection results.
  • a constant change between the individual nozzle during injection has the disadvantage a higher number of thermal load changes.
  • the fuel is injected in each case via a single nozzle.
  • Part-load operation leads to a lower overall temperature level in the Combustion chamber and at the combustion chamber components. That's why the through the uneven temperature distribution caused higher voltages limited the combustion chamber components, so that the combustion chamber components no excessive or critical voltages occur. Also the appearance of High temperature corrosion is due to a locally higher combustion chamber temperature excluded due to the lower total temperature level.
  • the inventive method is particularly for very deep Part-load operations of less than 15% of full load suitable, in particular for Partial loads between 1% and 3% of full load.
  • the inventive method allows an environmentally friendly Combustion in partial load operation, and has the decisive advantage that the visually disturbing, gray or black exhaust clouds avoided become. This is particularly advantageous for marine diesel engines.
  • the inventive method is suitable for the operation of stationary and moving two-stroke and four-stroke diesel engines, in particular for Four-stroke diesel engines with a cylinder bore of more than 150 mm or for two-stroke diesel engines with a cylinder bore of more than 300 mm in diameter.
  • connection and disconnection of an injection nozzle when switching to one of three modes of operation is advantageously carried out with a Switching function, which has a hysteresis.
  • switched so between the first and second partial load range be that, starting from the first part load range, at a partial load of 12.5% of the full load in the operating mode according to the second partial load range is switched, whereas, starting from the second partial load range, at a partial load of 17.5% of full load in the operating mode according to the first Part load range is switched.
  • Switching from one mode to the other can, for example, also be done such that a timing is used, so that after a certain time, for example, 20 seconds after the lower or exceed a given threshold, to another Operating mode is switched. Switching from one to the other Operating mode can also be abrupt, so with a larger Change of load, for example, 5%, immediately to another Operating mode is switched.
  • Fig. 1 shows a two-stroke diesel engine 1 with a plurality of cylinders 11 and Piston 10, in which the Caribbeanspiei between the crankshaft 2, the Fuel supply and the movement of the exhaust valve 13 electronically is controlled.
  • a high-pressure pump 4 With a high-pressure pump 4, the fuel over the Pipe 6 and the accumulator 5 of the injection nozzle 12 is supplied.
  • One Hydraulic system comprising the pressure pump 7, the pipe 9 and the accumulator 8 allows the position of the exhaust valve 13 to be actuated.
  • the longitudinally purged two-stroke diesel engine 1 has a centrally arranged Exhaust valve 13 and a plurality of cylinder cover peripherally arranged injection nozzles 12. Usually, such a Two-stroke diesel engine 1 two to four injectors 12 for fuel on.
  • Fig. 2a shows schematically the combustion chamber of the cylinder 11 with three peripheral and regularly spaced injection nozzles 12a, 12b, 12c.
  • This method example shows a partial load operation with one each single active injector 12a. Over the injection nozzle 12a is thus Fuel injected 14a, whereas via the injectors 12b and 12c in shown time no fuel 14a is injected. While at least two consecutive working cycles will be solely on the Injector 12a injected fuel 14a to thereafter during at least two consecutive working cycles fuel 14a only via the injector 12b and thereafter for at least another two successive working cycles only through the injector 12c inject. In a particularly advantageous method is during significantly more than two consecutive work cycles, for example, for 10 to 30 minutes, fuel from a single Injector 12a supplied.
  • Fig. 2b shows a method example in partial load operation, each with two simultaneously active injection nozzles 12a, 12b.
  • the fuel 14a, 14b also during at least two consecutive working cycles solely via the injectors 12a, 12b supplied thereafter during at least two successive working cycles solely via the injectors 12b, 12c, and then via the two injection nozzles 12c, 12a.
  • This method is repeated constantly.
  • the fuel 14a, 14b for 5 to 60 minutes, in particular 10 to 30 minutes via the same two injection nozzles 12a, 12b before injecting onto another pair of injectors 12b, 12c, is changed.
  • FIGS. 2a and 2b show just two examples of a multitude of possibilities, as in a two-stroke or four-stroke diesel engine each having two to four fuel injectors 12 per cylinder 11 by opening only a portion of the existing nozzles the Fuel 14a, 14b can be injected asymmetrically to thereby a longer and more stable injection duration and a temporarily uneven Temperature distribution in the combustion chamber, or a Combustion zone with higher temperature during a partial load operation too achieve.
  • each with a single active injector 12a, 12b, 12c particularly advantageous.
  • the injection nozzles 12a, 12b, 12c are for dimensioned operation at nominal load. To a favorable spray behavior It is therefore advantageous for low part loads to obtain the relatively low Fuel quantity through a single injection nozzle 12 a, 12 b, 12 c the Supply combustion chamber.

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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Feeding And Controlling Fuel (AREA)

Claims (10)

  1. Procédé pour l'injection de combustible (14a, 14b) dans la chambre de combustion d'un cylindre (11) d'un moteur à combustion interne à pistons alternatifs (1) de type diesel en fonctionnement à charge partielle, dans lequel au moins deux injecteurs (12a, 12b, 12c) sont affectés à chaque chambre de combustion, caractérisé en ce que le combustible (14a, 14b) est injecté alternativement d'une façon telle que pendant au moins deux cycles de travail consécutifs, par au moins un des injecteurs (12a, 12b, 12c), aucun combustible n'est injecté, et qu'ensuite, pendant au moins deux cycles de travail consécutifs, aucun combustible (14a, 14b) n'est injecté par l'injecteur suivant (12a, 12b, 12c).
  2. Procédé selon la revendication 1, caractérisé en ce qu'à chaque chambre de combustion sont affectés trois ou quatre injecteurs par lesquels le combustible est injecté.
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce que le combustible est injecté par le même injecteur au moins deux fois de suite et en ce que le combustible est ensuite injecté par un autre injecteur au moins deux fois de suite.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que le combustible est injecté alternativement par un des injecteurs à chaque fois, et en ce que le combustible est injecté pendant au moins deux cycles de travail consécutifs par le même injecteur.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que le combustible est injecté constamment par le même injecteur pendant une durée d'au moins trois minutes.
  6. Procédé selon la revendication 4, caractérisé en ce que le combustible est injecté par le même injecteur pendant une durée comprise entre 5 et 60 minutes, en particulier entre 10 et 30 minutes.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que le moteur à combustion interne à pistons alternatifs est utilisé à une charge partielle de moins de 10 % de la pleine charge.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que le moteur à combustion interne à pistons alternatifs est utilisé comme moteur diesel à quatre temps ou à deux temps.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que le combustible est injecté dans un cycle de travail par un seul ou par deux ou par trois injecteurs.
  10. Moteur à combustion interne à pistons alternatifs avec au moins un cylindre (11), dans lequel à chaque chambre de combustion d'un cylindre sont affectés au moins deux injecteurs (12a, 12b, 12c), caractérisé en ce que le moteur à combustion interne à pistons alternatifs comporte des moyens pour l'exécution d'un procédé selon l'une des revendications précédentes.
EP01810878A 2000-10-10 2001-09-11 Procédé d'injection de combustible Expired - Lifetime EP1197650B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01810878A EP1197650B1 (fr) 2000-10-10 2001-09-11 Procédé d'injection de combustible

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00810932 2000-10-10
EP00810932 2000-10-10
EP01810878A EP1197650B1 (fr) 2000-10-10 2001-09-11 Procédé d'injection de combustible

Publications (2)

Publication Number Publication Date
EP1197650A1 EP1197650A1 (fr) 2002-04-17
EP1197650B1 true EP1197650B1 (fr) 2005-06-22

Family

ID=8174961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01810878A Expired - Lifetime EP1197650B1 (fr) 2000-10-10 2001-09-11 Procédé d'injection de combustible

Country Status (9)

Country Link
EP (1) EP1197650B1 (fr)
JP (1) JP5009467B2 (fr)
KR (1) KR100743210B1 (fr)
CN (1) CN100416068C (fr)
AT (1) ATE298393T1 (fr)
DE (1) DE50106574D1 (fr)
DK (1) DK1197650T3 (fr)
PL (1) PL199837B1 (fr)
TW (1) TW491930B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5693189B2 (ja) * 2010-12-08 2015-04-01 三菱重工業株式会社 内燃機関の燃料噴射装置および内燃機関の燃料噴射方法
JP5984469B2 (ja) * 2012-04-11 2016-09-06 三菱重工業株式会社 二元燃料ディーゼルエンジン
JP5998671B2 (ja) * 2012-06-27 2016-09-28 株式会社Ihi ２サイクルエンジン
DE102017201586A1 (de) 2017-02-01 2018-08-02 Robert Bosch Gmbh Brennkraftmaschine mit redundanten Injektoren

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR840465A (fr) * 1937-08-06 1939-04-26 Porsche Kg Moteur à combustion interne à marche rapide, en particulier pour des véhicules automobiles et des avions
US2640422A (en) * 1946-12-03 1953-06-02 Texas Co Fuel pump for internal-combustion engines
CH665453A5 (de) * 1985-01-11 1988-05-13 Sulzer Ag Zylinderdeckel fuer eine kolbenbrennkraftmaschine.
JPS62118055A (ja) * 1985-11-16 1987-05-29 Mitsubishi Heavy Ind Ltd 可変噴口燃料噴射弁
JPH06173821A (ja) * 1992-12-09 1994-06-21 Mazda Motor Corp エンジンの燃料噴射装置
EP0775821B1 (fr) 1995-11-24 2000-05-10 Wärtsilä NSD Schweiz AG Procédé et dispositif d'injection de combustible dans un moteur à combustion interne à piston alternatif

Also Published As

Publication number Publication date
EP1197650A1 (fr) 2002-04-17
CN100416068C (zh) 2008-09-03
JP5009467B2 (ja) 2012-08-22
PL349991A1 (en) 2002-04-22
DK1197650T3 (da) 2005-07-11
CN1346934A (zh) 2002-05-01
KR20020028778A (ko) 2002-04-17
JP2002155782A (ja) 2002-05-31
ATE298393T1 (de) 2005-07-15
PL199837B1 (pl) 2008-11-28
KR100743210B1 (ko) 2007-07-26
TW491930B (en) 2002-06-21
DE50106574D1 (de) 2005-07-28

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