EP0982492A2 - Dispositif d'injection de combustible dans un moteur à combustion interne à piston alternatif - Google Patents

Dispositif d'injection de combustible dans un moteur à combustion interne à piston alternatif Download PDF

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Publication number
EP0982492A2
EP0982492A2 EP99810617A EP99810617A EP0982492A2 EP 0982492 A2 EP0982492 A2 EP 0982492A2 EP 99810617 A EP99810617 A EP 99810617A EP 99810617 A EP99810617 A EP 99810617A EP 0982492 A2 EP0982492 A2 EP 0982492A2
Authority
EP
European Patent Office
Prior art keywords
fuel
control
pressure booster
injection
piston
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
EP99810617A
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German (de)
English (en)
Other versions
EP0982492A3 (fr
EP0982492B1 (fr
Inventor
Robert Hofer
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
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 Wartsila NSD Schweiz AG filed Critical Wartsila NSD Schweiz AG
Priority to EP99810617A priority Critical patent/EP0982492B1/fr
Publication of EP0982492A2 publication Critical patent/EP0982492A2/fr
Publication of EP0982492A3 publication Critical patent/EP0982492A3/fr
Application granted granted Critical
Publication of EP0982492B1 publication Critical patent/EP0982492B1/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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/32—Varying fuel delivery in quantity or timing fuel delivery being controlled by means of fuel-displaced auxiliary pistons, which effect injection
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
    • 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
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid pressure

Definitions

  • the invention relates to a device for injecting fuel for a reciprocating piston internal combustion engine according to the preamble of claim 1 and a reciprocating internal combustion engine with such a device.
  • EP-A 0 690 222 describes a device for injecting fuel described having a metering piston by a fuel pump Fuel under high pressure up to 2,000 bar and one Contains control piston, which has guide elements for the fuel.
  • the Control piston is powered by a hydraulic system between two End positions shifted, which is regulated electrically.
  • the fuel will Via the guide elements from a fuel pump to the dosing room or from Dosing chamber of the injector of a cylinder one Reciprocating internal combustion engine supplied.
  • the guiding elements are like this arranged that in none of the end positions a connection at the same time to both the fuel pump and the injector of a cylinder consists.
  • the invention has for its object a device for injection of fuel for a reciprocating internal combustion engine to create a individual control of the injection nozzles.
  • control valves is used to control the Injectors for register and stutter injection and / or shutdown enables one or more injection valves of an engine cylinder. At the The machine can fail all the injection nozzles of an engine cylinder be driven with the remaining cylinders at partial load.
  • Injection volume can be kept constant. If the distance measurement fails the injection is time-controlled. Becomes an ignition pressure measuring device applied, the ignition pressure to the permissible value can be regulated, so that always the cheapest Fuel consumption is achieved.
  • the injection device contains a pressure booster 1 and one Control slide 2, which are displaceable between two end positions and a control valve 3 and a hydraulic-electrical device 4.
  • the Pressure booster 1 is designed as a stepped piston, the two pistons 7, 8 with has different diameters.
  • the pistons 7, 8 are each in one Chamber 9, 10 slidably arranged, the chamber 9 for the Larger piston 7 via a channel 11 with the spool 2 in Connection is established and the chamber 10 for the smaller piston 8 a channel 12 with the control valve 3 and via a channel 13 with a Arrangement 14 for supplying fuel, e.g. Diesel fuel or Heavy oil is related.
  • In the chamber 9 there is an elastic means 15 arranged, which holds the pressure booster 1 in an end position.
  • the end position is the connecting channel 11 to the control slide 2 completed and the connecting channels 12 and 13 to the control valve 3rd or to the arrangement 14 for supplying fuel open.
  • the Control slide 2 is arranged in a cylindrical chamber 21, the one Feed channel 22, the consumer channel 11, which leads to the pressure booster 1 and a drain channel 24 and a channel 25 on the end faces Has pressure medium and a channel 26 for the leak.
  • the spool 2 is cylindrical and has two control edges 32, 32 to control the flow to control a medium.
  • the control valve 3 has an on / off function and has a valve body 41 with a seat, a feed channel 42 for Fuel, a return channel 43 and a consumer channel 44, one Valve slide 45 with a valve cone 46 and a known drive 47 for the valve slide.
  • the hydraulic-electrical device 4 comprises several hydraulic pumps 51 (only one shown), one accumulator 52, Pilot valves 53, 54 for the control slide 2 and the control valve 3, an angle encoder 55, both the angle of rotation and the Crankshaft position indicates means 56 for sensing the position of the pressure booster and control electronics 57, which with the Pilot valves 53, 54, the angle encoder 55 and the device 56 is connected to transmit signals.
  • the device 56 is advantageous as inductive measuring system. It is also possible to use other measuring systems, e.g.
  • lines 61 branch off from the accumulator 52, each for a cylinder of a reciprocating piston internal combustion engine are provided, the cylinder being one or more injectors can have.
  • the line 61 is connected to the feed channel 22 of the Control spool 2 and the pilot valves 53, 54 connected.
  • a line 62 is provided for each Exhaust valve (not shown).
  • pressure booster 1 is connected to the control valve 3.
  • control valves 3 with the pressure booster 1 be connected.
  • the pressure booster does two jobs, one Dosage and an increase in fuel pressure for everyone Injection process.
  • the fuel is dosed by means of Means 56 that continuously determine the path of the shift and as Apply signals to control electronics 57. From the cross-sectional area of the smaller piston 8 of the pressure booster 1 and from the covered The displaced volume is determined and thereby a volumetric one Injection realized.
  • Control electronics cause fuel injection into one Suppress cylinder with damaged injector and if necessary to reduce the total engine load and / or the error with one Display device to display.
  • the hydraulic pumps pump up control oil a pressure of about 100 to 300 bar in the accumulator 52.
  • the in this Energy contained in oil is used to operate the items in question here Device used.
  • the figure shows the device in the state before an injection, at which the arrangement 14 supplies the pressure booster 1 with fuel which is under a pressure of approx. 10 bar and the injection can use, which proceeds as follows.
  • the control oil flows into the larger chamber 9 of the pressure booster 1 and moves the step piston, so that in the smaller chamber 10 existing fuel is displaced.
  • the little one Chamber 10 on the one hand by a check valve in the arrangement 14 and on the other hand, is closed by the closed control valve 3 a pressure built up that corresponds to the area ratio of the stepped piston corresponds.
  • the Valve slide 45 actuated and the control valve 3 opened, so that the Fuel flows to the injector.
  • the injection process is quickly ended.
  • control slide 2 After completion of the injection process, the control slide 2 is in the Rested position so that the control oil from the larger Drain chamber 9 of pressure booster 1 via channels 11 and 24 can. This provision is from the means 15 and the new in the smaller chamber 10 of the pressure booster 1 flowing fuel supported.
  • the device contains a metering piston, which acts as a pressure booster (1) a stepped piston is configured to set a fuel quantity and bring to injection pressure and at least one control valve (3) to to supply one or more injection nozzles (5) with fuel.
  • the Pressure booster (1) and the control valve are electrically regulated hydraulic system operated by a pump with working oil at a much lower pressure than the injection pressure is applied.
  • the control valves (3) create an individual Injection enables.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
EP99810617A 1998-08-28 1999-07-12 Dispositif d'injection de combustible dans un moteur à combustion interne à piston alternatif Expired - Lifetime EP0982492B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99810617A EP0982492B1 (fr) 1998-08-28 1999-07-12 Dispositif d'injection de combustible dans un moteur à combustion interne à piston alternatif

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP98810854 1998-08-28
EP98810854 1998-08-28
EP99810617A EP0982492B1 (fr) 1998-08-28 1999-07-12 Dispositif d'injection de combustible dans un moteur à combustion interne à piston alternatif

Publications (3)

Publication Number Publication Date
EP0982492A2 true EP0982492A2 (fr) 2000-03-01
EP0982492A3 EP0982492A3 (fr) 2002-11-20
EP0982492B1 EP0982492B1 (fr) 2008-03-26

Family

ID=8236288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810617A Expired - Lifetime EP0982492B1 (fr) 1998-08-28 1999-07-12 Dispositif d'injection de combustible dans un moteur à combustion interne à piston alternatif

Country Status (7)

Country Link
EP (1) EP0982492B1 (fr)
JP (1) JP4574762B2 (fr)
KR (1) KR100743208B1 (fr)
CN (1) CN1114758C (fr)
DE (1) DE59914703D1 (fr)
DK (1) DK0982492T3 (fr)
PL (1) PL197444B1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939422A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzsystem für eine Brennkraftmaschine
WO2002055871A3 (fr) * 2001-01-13 2002-09-19 Bosch Gmbh Robert Dispositif d'injection de carburant
KR100743208B1 (ko) * 1998-08-28 2007-07-26 베르트질레 슈바이츠 악티엔게젤샤프트 왕복동 피스톤 연소엔진의 연료 분사장치
US7588012B2 (en) 2005-11-09 2009-09-15 Caterpillar Inc. Fuel system having variable injection pressure
EP2410168A1 (fr) * 2010-07-23 2012-01-25 Wärtsilä Schweiz AG Distributeur de fluide et procédé de préparation d'un fluide de travail à l'aide d'un distributeur de fluide
CN104879258A (zh) * 2015-03-27 2015-09-02 中国北方发动机研究所(天津) 一种液压放大式超高压燃油供给装置
US10344686B2 (en) 2016-05-26 2019-07-09 Man Energy Solutions, Filial Af Man Energy Solutions Se, Tyskland Large two-stroke compression-ignited internal combustion engine with fuel injection system for low flashpoint fuel and a fuel valve therefore

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020004006A (ko) * 2000-06-29 2002-01-16 박상록 축압식 연료분사시스템의 압력 제어장치
US7543568B1 (en) * 2008-02-14 2009-06-09 Gm Global Technology Operations, Inc. Fuel pressure amplifier for improved cranking performance
CN102112708B (zh) * 2008-07-14 2014-06-18 曼柴油机欧洲股份公司曼柴油机德国分公司 大型两冲程柴油发动机的凸轮驱动排气阀致动系统
JP2012026396A (ja) * 2010-07-27 2012-02-09 Akasaka Tekkosho:Kk 燃料噴射ポンプ
CN107476915B (zh) * 2017-08-22 2019-11-01 哈尔滨工程大学 一种带缓冲装置的双作用式高压燃油供给装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941282A (en) * 1973-05-12 1976-03-02 C.A.V. Limited Hydraulic system
GB1522954A (en) * 1974-11-01 1978-08-31 Cav Ltd Fuel systems for internal combustion engines
JPS60162021A (ja) * 1984-01-31 1985-08-23 Kawasaki Heavy Ind Ltd 内燃機関の燃料噴射制御装置
US4541385A (en) * 1980-01-15 1985-09-17 Robert Bosch Gmbh Fuel injection system for self-igniting internal combustion engines
JPS60256548A (ja) * 1984-05-31 1985-12-18 Isuzu Motors Ltd 増圧プランジヤ式燃料噴射装置
EP0690222A1 (fr) * 1994-06-27 1996-01-03 New Sulzer Diesel AG Disposit d'injection pour injecter du combustible dans un moteur à piston à combustion interne

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5874867A (ja) * 1981-10-30 1983-05-06 Nippon Denso Co Ltd 内燃機関の燃料噴射制御方法
JPS58214661A (ja) * 1982-06-08 1983-12-13 Nippon Soken Inc 流量計測装置および内燃機関の燃料噴射制御システム
JPS59152173U (ja) * 1983-03-31 1984-10-12 いすゞ自動車株式会社 増圧プランジヤ式燃料噴射装置
JPS6023248U (ja) * 1983-07-25 1985-02-18 いすゞ自動車株式会社 燃料噴射装置用サ−ボプランジヤの移動量検出装置
JPS61210264A (ja) * 1985-03-15 1986-09-18 Sumio Ishikawa 増圧式燃料噴射装置
JPH062632A (ja) * 1992-06-16 1994-01-11 Shinnenshiyou Syst Kenkyusho:Kk 電気油圧式燃料噴射装置の始動増量方法
JP2819963B2 (ja) * 1992-09-21 1998-11-05 日産自動車株式会社 蓄圧式インジェクタ
JP2885076B2 (ja) * 1994-07-08 1999-04-19 三菱自動車工業株式会社 蓄圧式燃料噴射装置
JP4574762B2 (ja) * 1998-08-28 2010-11-04 ヴェルトジィレ シュヴァイツ アクチェンゲゼルシャフト 往復ピストンエンジンの燃料噴射装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941282A (en) * 1973-05-12 1976-03-02 C.A.V. Limited Hydraulic system
GB1522954A (en) * 1974-11-01 1978-08-31 Cav Ltd Fuel systems for internal combustion engines
US4541385A (en) * 1980-01-15 1985-09-17 Robert Bosch Gmbh Fuel injection system for self-igniting internal combustion engines
JPS60162021A (ja) * 1984-01-31 1985-08-23 Kawasaki Heavy Ind Ltd 内燃機関の燃料噴射制御装置
JPS60256548A (ja) * 1984-05-31 1985-12-18 Isuzu Motors Ltd 増圧プランジヤ式燃料噴射装置
EP0690222A1 (fr) * 1994-06-27 1996-01-03 New Sulzer Diesel AG Disposit d'injection pour injecter du combustible dans un moteur à piston à combustion interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 130 (M-478), 14. Mai 1986 (1986-05-14) & JP 60 256548 A (ISUZU JIDOSHA KK), 18. Dezember 1985 (1985-12-18) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100743208B1 (ko) * 1998-08-28 2007-07-26 베르트질레 슈바이츠 악티엔게젤샤프트 왕복동 피스톤 연소엔진의 연료 분사장치
DE19939422A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzsystem für eine Brennkraftmaschine
WO2002055871A3 (fr) * 2001-01-13 2002-09-19 Bosch Gmbh Robert Dispositif d'injection de carburant
US7588012B2 (en) 2005-11-09 2009-09-15 Caterpillar Inc. Fuel system having variable injection pressure
EP2410168A1 (fr) * 2010-07-23 2012-01-25 Wärtsilä Schweiz AG Distributeur de fluide et procédé de préparation d'un fluide de travail à l'aide d'un distributeur de fluide
CN104879258A (zh) * 2015-03-27 2015-09-02 中国北方发动机研究所(天津) 一种液压放大式超高压燃油供给装置
US10344686B2 (en) 2016-05-26 2019-07-09 Man Energy Solutions, Filial Af Man Energy Solutions Se, Tyskland Large two-stroke compression-ignited internal combustion engine with fuel injection system for low flashpoint fuel and a fuel valve therefore
US10400682B2 (en) 2016-05-26 2019-09-03 Man Energy Solutions, Filial Af Man Energy Solutions Se, Tyskland Large two-stroke compression-ignited internal combustion engine with fuel injection system for low flashpoint fuel and a fuel valve therefore
US10400683B2 (en) 2016-05-26 2019-09-03 Man Energy Solutions, Filial Afman Energy Solutions Se, Tyskland Large two-stroke compression-ignited internal combustion engine with fuel injection system for low flashpoint fuel and a fuel valve therefore
EP3252291B1 (fr) * 2016-05-26 2020-06-10 MAN Energy Solutions, filial af MAN Energy Solutions SE, Tyskland Grand moteur à combustion interne à allumage par compression et à deux temps comportant un système d'injection de carburant pour carburant à faible point d'inflammabilité et soupape d'injection de carburant associée

Also Published As

Publication number Publication date
DK0982492T3 (da) 2008-04-21
CN1114758C (zh) 2003-07-16
DE59914703D1 (de) 2008-05-08
JP2000073912A (ja) 2000-03-07
JP4574762B2 (ja) 2010-11-04
PL334586A1 (en) 2000-03-13
CN1246581A (zh) 2000-03-08
EP0982492A3 (fr) 2002-11-20
KR100743208B1 (ko) 2007-07-26
PL197444B1 (pl) 2008-03-31
KR20000017580A (ko) 2000-03-25
EP0982492B1 (fr) 2008-03-26

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