EP0141044A2 - Dispositif d'injection de carburant avec pré-injection et injection principale dans un moteur à combustion interne - Google Patents

Dispositif d'injection de carburant avec pré-injection et injection principale dans un moteur à combustion interne Download PDF

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Publication number
EP0141044A2
EP0141044A2 EP84108303A EP84108303A EP0141044A2 EP 0141044 A2 EP0141044 A2 EP 0141044A2 EP 84108303 A EP84108303 A EP 84108303A EP 84108303 A EP84108303 A EP 84108303A EP 0141044 A2 EP0141044 A2 EP 0141044A2
Authority
EP
European Patent Office
Prior art keywords
injection
piston
pressure
fuel
pump
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
EP84108303A
Other languages
German (de)
English (en)
Other versions
EP0141044A3 (en
EP0141044B1 (fr
Inventor
Erhard Sitter
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to AT84108303T priority Critical patent/ATE44076T1/de
Publication of EP0141044A2 publication Critical patent/EP0141044A2/fr
Publication of EP0141044A3 publication Critical patent/EP0141044A3/de
Application granted granted Critical
Publication of EP0141044B1 publication Critical patent/EP0141044B1/fr
Expired 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
    • 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 a fuel injection device according to the preamble of the main claim.
  • a known fuel injection device of this type (DE-OS 30 11 376) is used for the exclusive application, on the one hand unwilling to ignite, promoted by a high pressure injection pump main fuel and on the other hand by a separate pump delivered ignition fuel via a hydraulic auxiliary pump separate injection nozzles for main fuel and ignition fuel at one
  • a pre-injection piston under the delivery pressure of the high-pressure injection pump is driven by a piston of larger diameter and displaces a pre-injection quantity from an upstream working area to the separate nozzle for the pre-injection.
  • the pre-injection piston has a stroke limiting Adjusting means.
  • the time allocation between pre-injection and main injection is structurally determined by an effective stop in the upstream working area and defining the stroke end of the pre-injection piston and by the so-called swallowing volume of the larger piston. It should therefore be problematic or impossible to achieve an in-phase assignment of pre-injection and main injection with an injection device of this type, since dependencies on the speed and load due to the dynamic influence of the lines and the throttle channels cannot be excluded.
  • a device is also known (DE-PS 1 252 001), in which a separate small piston for the pre-injection is offset axially parallel to a loading piston for the main injection within an Fuel injection valve is arranged. There is no separate low-pressure supply and the pre-injection quantity is obtained from the fuel supply for the main injection quantity, which does not preclude an adverse influence on the stand pressure in the pressure line and thus an inaccuracy with regard to the quantity control.
  • the fuel injection device with the characterizing features of the main claim has the advantage over that the main injection takes place at a precisely predetermined distance from the pre-injection, which is adjustable. Since the delivery pressure built up by the high-pressure injection pump initially serves exclusively for the pre-injection, only the pressure side of the pre-injection piston is acted on and no pressure division takes place from the beginning, as is customary, it is done the invention possible, both the time of the start of the pre-injection and the pre-injection quantity - in the usual way by specifying the pre-injection piston stroke -, then the exact spray distance between the pre-injection and the main injection. injection and, based on the total amount of fuel delivered, the main injection quantity and to classify all of this in a time-definable grid.
  • the fuel supplied by the high-pressure injection pump does not flow to the components which are responsible for the main injection until the pre-injection piston has traveled a predetermined stroke, usually when the pre-injection has ended , there is a high injection speed and a correspondingly high pressure for the main injection.
  • the need to provide a pressure stage to prevent the main injection during the pre-injection is completely eliminated.
  • the two pistons provided for realizing the present invention namely pre-injection pistons and the storage pistons which specify the spraying distance by means of its setting data, are actuated in chronological succession by the delivery pressure of the high-pressure injection pump.
  • FIG. 1 shows a first embodiment of the invention, which is also suitable for use in two-substance operation roughly schematic representation and FIG. 2 the hydraulically driven pilot injection auxiliary pump, which also contains partial elements for the main injection, corresponding to FIG. 1, in cross section; 3 shows a second schematic representation of a fuel injection device, which is largely unsuitable for use in dual-fuel operation and corresponds to the embodiment of FIG. 1, in which the fuel volume stored in the area of the main injection can be used to fill the pre-injection element, and FIG. 4 in section the hydraulic pilot injection auxiliary pump from FIG. 3, also in cross section.
  • the basic idea of the present invention is to use pistons in the form of a pre-injection piston and a main injection storage piston, which are separate from the delivery pressure of a high-pressure injection pump, for the areas of pre-injection and main injection, the pre-injection piston moving at least indirectly through its movement the subsequent supply of the high pressure -Injection pump with high-pressure fuel controls the area of the main injection, so that as a result of this measure the entire delivery pressure of the high-pressure injection pump initially benefits the pre-injection piston and its stroke movement.
  • the high pressure injection pump is generally designated 10; its sequence is controlled by a camshaft 11 and, moreover, of a generally known embodiment, so that it need not be discussed further here.
  • the fuel volume delivered by the high-pressure injection pump 10 via a pressure line 12, into which two parallel-connected, but oppositely opening check valves 13 are switched, for each stroke of the pump piston 10a, is supplied by a low-pressure delivery pump 14 via a delivery line 15 fed.
  • the same fuel delivered by the low-pressure feed pump 14 also reaches the area of the pre-injection via a connecting line 15a.
  • this connecting line 15a does not apply to the dual-fuel operation when the present invention is used, in which the internal combustion engine is initially supplied with ignition fuel, for example, via a pre-injection nozzle and then, in the course of the main injection, via a main injection nozzle, and is replaced by a separate pressure line 15 '. which is shown in broken lines in FIG. 1 and via which ignition fuel is supplied from a separate tank 16 by a second low-pressure feed pump 14 ′′ provided in this case.
  • the pilot injector 17, the main injector 18 and the hydraulic auxiliary pump, driven by the delivery pressure of the high-pressure injection pump, are designated 19;
  • a separate return line 20 ′ from the return line of the pre-injection nozzle 17 into the other tank 16 is of course also provided for the pre-injection nozzle .
  • the part of the connecting line 15a lying between two interfaces S1 is omitted, and the return line 20 connected to the pre-injection nozzle 17 is separated at the interface S2.
  • the pre-injection system 23 comprises a piston 25 for pre-injection, which is slidably mounted in a stepped bore 26 of the housing 22.
  • the pressure side of the piston 25 is closed by a pressure connection 27, which is connected to the pressure line 12 coming from the high-pressure feed pump 10.
  • the piston 25 extends with a spring plate 28 into an enlarged working space 29, in which a bias spring 30, designed as a compression spring, is arranged, which presses the piston against its stop on the left in the illustration in FIG. 2.
  • the piston 25 can have an extension 31 beyond the spring plate 28, which contains a throttle point 32 which is part of a longitudinal piston bore 33 which connects the working space 29 with a transverse bore 35 opening into an annular groove 34 on the piston.
  • the inlet connection for the low-pressure feed pump inlet is denoted by 36.
  • the pre-injection quantity displaced from the working chamber 29 of the pre-injection piston 25 flows via a pressure connection 37 to the pre-injection nozzle 17 (FIG. 1).
  • piston 25 In the starting position of the pilot injection shown in FIG. 2 piston 25 (stop on the left, caused by the contact, for example, of the spring plate 28 on a shoulder 28a formed by the stepped bore 26 or by contact of a pressure surface of the piston on the screwed-in pressure connection 27) and therefore blocks the pre-injection piston 25 itself in the sense of a later pressure distribution
  • Main injection system 24 further internal pressure channel 38, which is formed by a transverse bore or a transverse channel.
  • the main injection system 24 comprises a storage piston 40 which is slidably mounted in a bore 39 and which, in its starting position on the right in the plane of the drawing, extends from a.
  • Compression spring 41 is pressed, which abuts the piston rear surface and is supported in the further bore base of a threaded sleeve 42, which in turn is screwed into a portion 43 of the bore 39 which is enlarged in diameter and has an internal thread.
  • An adjusting screw 45 extends through an inner bore 44 with a thread in the threaded sleeve, so that the distance between its inner end and the piston end, and thus the distance traveled by the accumulator piston 40 when the delivery pressure of the high-pressure injection pump acts, can be adjusted by tightening the adjusting screw 45 more or less can. Threaded sleeve 42 and adjusting screw 45 are fixed with the help of corresponding locknuts -46 and 47.
  • Another pressure line 48 connects the working space 39a of the accumulator piston 40 formed by the bottom of the bore 39 with the pressure connection (not shown in the drawing) for the main injection, which is screwed into the thread shown at 49.
  • the amount of fuel delivered by the high-pressure injection pump 10 first presses the pre-injection piston 25, and only this, since it can only act on it, against the spring force of its pre-tensioning spring 30 to the right in the plane of the drawing and causes the displacement of a predetermined, pre-injection quantity that can be determined by design Working space 29 to the pre-injection nozzle 17.
  • the pre-injection begins at the moment in which a web 50 adjoining the annular groove 34 on the pre-injection piston 25 covers an inlet bore 36a from the low-pressure feed pump 14 and continues as the stroke of the pre-injection piston 25 progresses until the web 50 frees the bore again, so that there is a relief of the working space 39a via the annular groove 34. Due to this activation by the pre-injection piston 25 itself, a specific pre-injection quantity QVE results. During the stroke of the pre-injection piston 25, preferably after activation or after the end of the pre-injection, the driven pre-injection piston 25 releases the pressure channel 28 as a connecting bore between the two systems 23 and 24.
  • the accumulator piston 40 now assumes a quantity storage of the fuel quantity delivered by the high-pressure feed pump 10 by carrying out its stroke against the spring pressure acting on it until it hits the stop formed by the adjusting screw 45. Only then does the pressure to the main injection nozzle 18 increase accordingly and the main injection begins. The accumulation of the accumulator piston 40 on the stop and the amount of fuel absorbed thereby ensures the necessary Spraying distance (for example 7 to 8 ° NW) during which the high-pressure injection pump 10 continues to deliver as the main injection pump.
  • the total amount of fuel stored is then either pushed back into the main injection pump 10 by the return springs 41 and 30 of both systems; however, it can also be used as a filling quantity for the pre-injection, which is explained further below with reference to the representation of FIGS. 3 and 4.
  • a pressure ratio is in the range. pre-injection dispensable; nevertheless, the arrangement made by the invention ensures a large swallowing volume, which can be varied as desired by the position of the adjusting screw 45 in the sense of a variable spraying distance.
  • the throttle 32 in the longitudinal channel 33 of the pre-injection piston 25 is expediently not chosen too narrow to ensure the immediate relief of the working space 29 during the overflow stroke.
  • FIGS. 3 and 4 adopts the essential components and functional features of the first exemplary embodiment identically, such identical parts are provided with the same reference numerals and only the respective differences are discussed in more detail below. Slightly different parts have the same name and are provided with index lines.
  • an additional cross connection 54 is provided back from the main injection system 24" to the pre-injection system 23 ", which branches off from the pressure outlet channel 48 of the main injection system 24" with a suitable one Junction point in the piston guide for the pre-injection piston 25 connects, so that in the starting position before the delivery stroke of the high-pressure injection pump 10, the pre-injection system 23 "can take up the corresponding amount of fuel and supply it to its working chamber 29.
  • this connecting channel 54 is shown in such a way that it opens in the starting position of the pre-injection piston 25 in the region of the annular groove 34.
  • the leakage oil return line 52 provided with the check valve 51 is connected axially to the working chamber 29 and is connected to the piston guide for the pilot injection piston 25.
  • the fuel volume displaced by the storage piston 40 of the main injection system 24 ′′ therefore passes through the transverse and longitudinal bores 35, 33 in the piston 25 in the working chamber 29, the control for determining the pre-injection quantity can be carried out either by connecting the leakage oil return line 52 via the annular groove 34 "with transverse bore 35" to the piston longitudinal channel 33 and the working chamber 29, or in that the pre-injection piston 25 after he has opened the first connecting channel 38, runs up against a stop 53.
  • the remaining elements of the auxiliary pump shown in FIG. 4 correspond to the representation of FIG. 2 in terms of function and effect, so that they do not need to be explained further and also do not need to be provided with reference numerals.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP84108303A 1983-08-26 1984-07-14 Dispositif d'injection de carburant avec pré-injection et injection principale dans un moteur à combustion interne Expired EP0141044B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84108303T ATE44076T1 (de) 1983-08-26 1984-07-14 Kraftstoffeinspritzeinrichtung mit vor- und haupteinspritzung bei brennkraftmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833330774 DE3330774A1 (de) 1983-08-26 1983-08-26 Kraftstoffeinspritzeinrichtung mit vor- und haupteinspritzung bei brennkraftmaschinen
DE3330774 1983-08-26

Publications (3)

Publication Number Publication Date
EP0141044A2 true EP0141044A2 (fr) 1985-05-15
EP0141044A3 EP0141044A3 (en) 1987-04-29
EP0141044B1 EP0141044B1 (fr) 1989-06-14

Family

ID=6207478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108303A Expired EP0141044B1 (fr) 1983-08-26 1984-07-14 Dispositif d'injection de carburant avec pré-injection et injection principale dans un moteur à combustion interne

Country Status (5)

Country Link
US (1) US4520774A (fr)
EP (1) EP0141044B1 (fr)
JP (1) JPS6073041A (fr)
AT (1) ATE44076T1 (fr)
DE (2) DE3330774A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233531A1 (fr) * 1986-02-05 1987-08-26 Deere & Company Système d'alimentation en combustible pour un moteur à piston rotatif
WO1988002814A1 (fr) * 1986-10-14 1988-04-21 Robert Bosch Gmbh Dispositif d'injection de carburant pour moteur a combustion interne, en particulier des moteurs diesel
DE4021453A1 (de) * 1990-07-05 1991-09-12 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer vor- und haupteinspritzung
DE4018535A1 (de) * 1990-06-09 1991-12-12 Orange Gmbh Kraftstoffeinspritzpumpe
DE4414906C1 (de) * 1994-04-28 1995-05-04 Daimler Benz Ag Kraftstoffeinspritzverfahren für eine luftverdichtende Einspritzbrennkraftmaschine mit Sekundär- und Primäreinspritzung
DE19815266B4 (de) * 1997-04-16 2008-09-18 Volkswagen Ag Verfahren zur Einspritzung von Kraftstoff in eine Brennkraftmaschine

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61171874A (ja) * 1985-01-28 1986-08-02 Nippon Denso Co Ltd ２種燃料噴射装置
DE3516537A1 (de) * 1985-05-08 1986-11-13 M A N Nutzfahrzeuge GmbH, 8000 München Kraftstoffeinspritzvorrichtung fuer selbstzuendende brennkraftmaschinen
US4693227A (en) * 1985-05-21 1987-09-15 Toyota Jidosha Kabushiki Kaisha Multi-fuel injection system for an internal combustion engine
FR2595761B1 (fr) * 1986-03-14 1988-05-13 Semt Dispositif d'injection pour moteur a combustion interne, permettant l'injection de deux combustibles
US4796577A (en) * 1986-06-16 1989-01-10 Baranescu George S Injection system with pilot injection
DE3629751C2 (de) * 1986-09-01 1998-07-02 Bosch Gmbh Robert Voreinspritzvorrichtung für Brennkraftmaschinen
CH672661A5 (fr) * 1987-03-17 1989-12-15 Sulzer Ag
CH672660A5 (fr) * 1987-03-17 1989-12-15 Sulzer Ag
DE3907232A1 (de) * 1989-03-07 1990-09-13 Daimler Benz Ag Vorrichtung zur steuerung einer vor- und haupteinspritzmenge mit dazwischenliegender einspritzpause fuer eine brennkraftmaschine, insb. mit luftverdichtung und selbstzuendung
DE3907766A1 (de) * 1989-03-10 1990-09-13 Bosch Gmbh Robert Speicherkraftstoffeinspritzvorrichtung
EP0469142B1 (fr) * 1990-02-21 1995-04-05 Robert Bosch Ag Dispositif d'injection de carburant pour moteurs a combustion interne a injection
DE4105168A1 (de) * 1990-12-10 1992-06-11 Man Nutzfahrzeuge Ag Einspritzsystem fuer luftverdichtende brennkraftmaschinen
US5119780A (en) * 1991-06-11 1992-06-09 Southwest Research Institute Staged direct injection diesel engine
JPH0532766U (ja) * 1991-10-11 1993-04-30 三菱重工業株式会社 デイーゼル機関の燃焼装置
RU2102619C1 (ru) * 1991-10-21 1998-01-20 Орбитал Энджин Компани (Аустралия) ПТИ Лимитед Способ дозирования топлива, устройство для его осуществления, способ дозирования текучих сред и устройство для его осуществления
JPH06173811A (ja) * 1992-10-08 1994-06-21 Nippon Soken Inc 燃料噴射装置
GB9507115D0 (en) * 1995-04-06 1995-05-31 Lucas Ind Plc Fuel pumping apparatus
AU694353B2 (en) * 1995-04-28 1998-07-16 Ficht Gmbh & Co. Kg Fuel injection device for internal combustion engines
US8215292B2 (en) 1996-07-17 2012-07-10 Bryant Clyde C Internal combustion engine and working cycle
US6951211B2 (en) * 1996-07-17 2005-10-04 Bryant Clyde C Cold air super-charged internal combustion engine, working cycle and method
US7281527B1 (en) * 1996-07-17 2007-10-16 Bryant Clyde C Internal combustion engine and working cycle
DE19651175C2 (de) * 1996-12-10 1999-12-30 Otto C Pulch Gegenkolben-Zweitakt-Verbrennungsmotor mit Direkteinspritzung des Kraftstoffes in den Zylinder und regelbarer Rotation und Turbulenz der Ladeluft
US5782222A (en) * 1997-03-19 1998-07-21 Siemens Automotive Corporation Apparatus and method for supplying an alternate fuel substantially simultaneously to fuel injectors
DE19716221B4 (de) 1997-04-18 2007-06-21 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung mit Vor- und Haupteinspritzung bei Brennkraftmaschinen, insbesondere für schwer zündbare Kraftstoffe
DE19746492A1 (de) * 1997-10-22 1999-04-29 Bosch Gmbh Robert Kraftstoffeinspritzanlage für eine Brennkraftmaschine
DE19746490A1 (de) * 1997-10-22 1999-04-29 Bosch Gmbh Robert Kraftstoffeinspritzanlage für eine Brennkraftmaschine
DE10022421A1 (de) * 2000-05-09 2001-11-15 Bosch Gmbh Robert Voreinspritzventil für die Steuerung des Kraftstoffzuflusses eines Kraftstoffeinspritzventils
JP3935829B2 (ja) * 2002-11-20 2007-06-27 三菱重工業株式会社 内燃機関のリーク燃料回収装置
US20060082682A1 (en) * 2004-10-15 2006-04-20 Hoodman Corporation Camera LCD screen viewing device
JP4595996B2 (ja) * 2007-11-16 2010-12-08 トヨタ自動車株式会社 内燃機関の高圧燃料供給装置
JP5873059B2 (ja) * 2013-09-30 2016-03-01 株式会社豊田中央研究所 圧縮着火式内燃機関
GB2560513A (en) 2017-03-13 2018-09-19 Ap Moeller Maersk As Fuel injection system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE596917C (de) * 1932-10-08 1934-11-15 Walter Herrmann Dipl Ing Einspritzvorrichtung fuer Brennkraftmaschinen
US2537087A (en) * 1942-03-07 1951-01-09 Atlas Diesel Ab Fuel injection apparatus
DE1252001B (de) * 1967-10-12 Robert Bosch Gmbh, Stuttgart Kraftstoffemspntz\ entil fur Vor und Haupteinspritzung
DE1284687B (de) * 1967-10-18 1968-12-05 Bosch Gmbh Robert Kraftstoffeinspritzventil fuer Vor- und Haupteinspritzung
DE2834633A1 (de) * 1978-08-08 1980-03-06 Bosch Gmbh Robert Vorrichtung zur steuerung der voreinspritzung
DE3011376A1 (de) * 1980-03-25 1981-10-01 Motoren-Werke Mannheim AG, vorm. Benz Abt. stat. Motorenbau, 6800 Mannheim Einrichtung zur einspritzung von zuendkraftstoff einerseits und zuendunwilligem hauptkraftstoff andererseits fuer dieselmotoren
DD151205A5 (de) * 1979-05-28 1981-10-08 Semt Brennstoffeinspritzpumpe fuer eine brennkraftmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2173813A (en) * 1936-10-20 1939-09-19 Bischof Bernhard Fuel injection apparatus
AT276866B (de) * 1965-12-31 1969-12-10 Bosch Gmbh Robert Kraftstoffeinspritzventil für Vor- und Haupteinspritzung
FR1515388A (fr) * 1966-03-30 1968-03-01 Bosch Gmbh Robert Soupape d'injection de carburant pour la pré-injection et l'injection principale
DE1808650A1 (de) * 1968-11-13 1970-06-18 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung
US3752137A (en) * 1972-04-25 1973-08-14 Ambac Ind Apparatus for controlling rate of fuel injection
DE2911447A1 (de) * 1979-03-23 1980-09-25 Daimler Benz Ag Den kraftstoffdurchfluss steuerndes steuerglied fuer einspritzvorrichtungen bei insbesondere luftverdichtenden brennkraftmaschinen
DE2943896A1 (de) * 1979-10-31 1981-05-14 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzduese fuer brennkraftmaschinen
JPS5788265A (en) * 1980-11-25 1982-06-02 Nippon Denso Co Ltd Fuel injection device for internal combustion engine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1252001B (de) * 1967-10-12 Robert Bosch Gmbh, Stuttgart Kraftstoffemspntz\ entil fur Vor und Haupteinspritzung
DE596917C (de) * 1932-10-08 1934-11-15 Walter Herrmann Dipl Ing Einspritzvorrichtung fuer Brennkraftmaschinen
US2537087A (en) * 1942-03-07 1951-01-09 Atlas Diesel Ab Fuel injection apparatus
DE1284687B (de) * 1967-10-18 1968-12-05 Bosch Gmbh Robert Kraftstoffeinspritzventil fuer Vor- und Haupteinspritzung
DE2834633A1 (de) * 1978-08-08 1980-03-06 Bosch Gmbh Robert Vorrichtung zur steuerung der voreinspritzung
DD151205A5 (de) * 1979-05-28 1981-10-08 Semt Brennstoffeinspritzpumpe fuer eine brennkraftmaschine
DE3011376A1 (de) * 1980-03-25 1981-10-01 Motoren-Werke Mannheim AG, vorm. Benz Abt. stat. Motorenbau, 6800 Mannheim Einrichtung zur einspritzung von zuendkraftstoff einerseits und zuendunwilligem hauptkraftstoff andererseits fuer dieselmotoren

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0233531A1 (fr) * 1986-02-05 1987-08-26 Deere & Company Système d'alimentation en combustible pour un moteur à piston rotatif
WO1988002814A1 (fr) * 1986-10-14 1988-04-21 Robert Bosch Gmbh Dispositif d'injection de carburant pour moteur a combustion interne, en particulier des moteurs diesel
DE4018535A1 (de) * 1990-06-09 1991-12-12 Orange Gmbh Kraftstoffeinspritzpumpe
DE4021453A1 (de) * 1990-07-05 1991-09-12 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer vor- und haupteinspritzung
DE4414906C1 (de) * 1994-04-28 1995-05-04 Daimler Benz Ag Kraftstoffeinspritzverfahren für eine luftverdichtende Einspritzbrennkraftmaschine mit Sekundär- und Primäreinspritzung
DE19815266B4 (de) * 1997-04-16 2008-09-18 Volkswagen Ag Verfahren zur Einspritzung von Kraftstoff in eine Brennkraftmaschine

Also Published As

Publication number Publication date
JPH059634B2 (fr) 1993-02-05
DE3330774A1 (de) 1985-03-14
JPS6073041A (ja) 1985-04-25
EP0141044A3 (en) 1987-04-29
EP0141044B1 (fr) 1989-06-14
DE3478707D1 (en) 1989-07-20
ATE44076T1 (de) 1989-06-15
US4520774A (en) 1985-06-04

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