WO2001014718A1 - Injecteur - Google Patents

Injecteur Download PDF

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Publication number
WO2001014718A1
WO2001014718A1 PCT/DE2000/002679 DE0002679W WO0114718A1 WO 2001014718 A1 WO2001014718 A1 WO 2001014718A1 DE 0002679 W DE0002679 W DE 0002679W WO 0114718 A1 WO0114718 A1 WO 0114718A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
slide
pressure
injector according
actuator
Prior art date
Application number
PCT/DE2000/002679
Other languages
German (de)
English (en)
Inventor
Wolfgang Stoecklein
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 KR1020017004876A priority Critical patent/KR20010083912A/ko
Priority to JP2001518567A priority patent/JP2003507643A/ja
Priority to EP00956131A priority patent/EP1125048A1/fr
Publication of WO2001014718A1 publication Critical patent/WO2001014718A1/fr

Links

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
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0049—Combined valve units, e.g. for controlling pumping chamber and injection valve
    • 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
    • F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable pressure
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M63/0007—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 electrically actuated valves
    • 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
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic

Definitions

  • the invention relates to an injector according to the preamble of claim 1.
  • an injector is already known for example from DE 196 24 001 AI.
  • the actuating device of this injector consists of a piezoelectric actuator and a valve with a displaceably guided valve element. This controls a pressure medium connection between a pressure medium
  • Opening pressure is exceeded.
  • the locking elements are in the closed position.
  • injectors with piezoelectric actuators are particularly suitable for representing injection cycles from a plurality of injections separated in time, which are referred to, for example, as pre-injection, as main injection and as post-injection. It has proven to be extremely advantageous to carry out the pre-injection and the main injection in a pressure-controlled manner and to carry out the post-injection in a needle-stroke controlled manner. Disadvantageously, the known injectors only allow one type of control.
  • an injector with the characterizing features of claim 1 has the advantage that it allows a pressure-controlled pre-injection and main injection and a needle stroke-controlled post-injection, in which high pressure is present in the interior of the injector.
  • Such injectors enable particularly low-noise and low-emission operation of an internal combustion engine.
  • Actuating device for the closing member which in addition to the actuator comprises a 4/3 way valve for controlling the pressure conditions in the interior of the injector. It is advantageous this 4/3 way valve is equipped with two valve elements that form seat valves. A valve slide, which creates an additional slide valve, is arranged between these two seat valves. With a single actuation of the actuator, an injection cycle can be generated with several injections that are time-controlled, pressure-controlled or needle-stroke-controlled. The drive frequency of the actuator and the heat loss generated by it is relatively low and thus the stability of the actuator is high. Furthermore, the injector according to the invention is distinguished by the fact that it does not have any noteworthy pressure medium leakage in the uncontrolled state.
  • Figure 1 shows the In ector according to the invention schematically in longitudinal section, in the
  • FIGS 2 to 4 are diagrams for explaining the various control options of the injector;
  • Figures 5 and 6 show two advantageous developments of the injector according to the invention;
  • Figure 7 shows a second embodiment of a
  • FIG. 1 shows a schematic representation of an injector 10 according to the invention.
  • This has a closing member 14 which is slidably arranged in a nozzle bore 18 of a housing 20 for controlling injection openings 16.
  • the closing member 14 is designed in the form of a needle which is divided into different needle sections 22a to 22e with different outside diameters.
  • the needle sections 22a and 22c act together with the wall of the nozzle bore 18 as guide sections; the needle sections 22b and 22d are recessed in the outer diameter with respect to the wall of the nozzle bore 18.
  • a first pressure medium channel 28 opens into the annular space 24.
  • the needle section 22e is designed as a tip, which closes the injection openings 16 in a pressure-tight manner in the position of the closing member 14 shown.
  • the closing member 14 is held in the closed position by two compression springs 30 and 32.
  • the first compression spring 30 engages the shoulder between the needle sections 22b and 22c of the closing member 14 and is supported on a ring 34 fixed in the interior of the nozzle bore 18, while the second compression spring 32 between the end face of the closing member 14 and a closing the nozzle bore 18 Wall is clamped.
  • the installation space of the second compression spring 32 forms a pressure chamber 33, into which a second pressure medium-carrying channel 36 opens and from which a third pressure medium-carrying channel 38 emerges.
  • Dossein 40 and 42 are arranged to determine the course of the lifting movement of the closing member 14.
  • the first channel 28 and the second channel 36 act as control channels which act hydraulically on the closing element 14 in addition to the mechanical forces of the compression springs 30, 32.
  • these channels 28 and 36 are coupled to an actuating device 44 which
  • the actuating device 44 has a slide bore 45 formed in the housing 20 with a valve element 50 which is displaceably guided therein, and an externally controllable piezoelectric actuator 52. This interacts with the valve element 50 with the interposition of a hydraulic translator 54.
  • the translator 54 has two pistons 56 and 58 of differently sized pressure areas for translating the stroke movement of the actuator 52, which enclose a translator chamber 60 between them.
  • the piston 56 with the larger pressure area faces the actuator 52 and the piston 58 with the smaller pressure area faces the valve element 50.
  • the valve element 50 consists of two valve members 62 and 64 in the form of balls and an essentially cylindrical valve slide 66 located therebetween.
  • the end of this valve valve 64 is designed as a truncated cone 68.
  • the valve slide 66 is provided with a centrally arranged channel 70, which branches at its one end facing the pin 68 into a plurality of radial channels 71. The latter emerge at the transition of the pin 68 into the cylindrical region of the valve slide 66 into the interior of the slide bore 45.
  • the opposite end of the longitudinal bore 70 forms a first valve seat 72. This is controlled by the first valve member 62.
  • the latter abuts the piston 58 of the translator 54 via a support element 74.
  • valve member 62 interacts with a valve spring 76 which is supported on the end face of the valve slide 66 which has the first valve seat 72 and which acts on the valve member 72 in the direction of its open position.
  • the installation space of the valve spring 76 is hydraulically connected to the return 48.
  • a second valve spring 78 surrounds the first valve spring 76 on the circumference and bears on the one hand on a plate 80 covering the slide bore 45 and penetrated by the piston 58 of the translator 54 and on the other hand on the end face of the valve slide 66.
  • a transverse channel 83 penetrating the channel 70 at right angles is provided approximately in the middle of the valve slide 66. Its ends emerge from the circumference of the valve slide 66 and form with the
  • Slider bore 45 a pressure medium-filled cavity 110. This is sealed with the aid of a control edge 112 on the valve slide 66 against the housing-side channel 36. With a corresponding deflection of the valve slide 66, a connection of this cavity 110 to the housing-side channel 36 is created, via which the pressure level in the pressure chamber 33 of the closing element 14 can be influenced.
  • the pin 68 of the valve slide 66 lies against the second valve member 64, but without lifting it off its second valve seat 82, which is formed on the housing side at a constriction 69 of the slide bore 45.
  • the inlet 46 and in the flow direction after the valve seat 82 the channel 28 opens into the slide bore 45 a.
  • the second valve member 64 is acted upon in the closing direction by a closing spring 84 which is supported on a wall 86 closing the slide bore 45.
  • valve element 50 can be brought into three different switching positions, the basic position being shown in FIG. 1. Depending on the switching position, the injection cycles are pressure or needle stroke controlled.
  • Channel 28, as well as the stroke of the closing member 14 are graphically plotted over time.
  • the injector 10 is initially in its basic position shown in FIG. 1.
  • the valve seat 70 is open and the valve seat 82 is closed. Due to the position of the valve spool 66, the pressure medium connection between the channels 36 and 70 is interrupted.
  • the actuator 52 If the actuator 52 is now actuated, it generates a lifting movement which is transmitted to the valve member 62 in a hydraulically translated manner (diagram 100). At the time T1, the valve member 62 bears against the first valve seat 72, closes it (diagram 102) and thus establishes a mechanical operative connection between the actuator 52 and the actuator 52
  • Valve slide 66 forth With increasing stroke of the actuator 52, the valve member 64 of the second seat valve (diagram 106) opens after T1, so that pressure medium under high pressure can flow into the channel 28 from the inlet 46. The channel 36 is still closed. According to diagram 108 increases thereby the pressure level in the channel 28 or in the annular space 26 surrounding the closing member 14. Because of the pressure surface formed by the needle section 22c, the closing member 14 is thereby loaded with a hydraulic opening force which counteracts the mechanical closing force specified by the pressure fields 30 and 32. When the opening pressure is reached, the closing member 14 executes an opening movement (diagram 108) at time T2 and thereby releases the injection openings 16.
  • This injection cycle is ended by withdrawing the actuation of the actuator 52 in a single stage (time T3).
  • the second valve member 64 closes and shuts off the inlet 46.
  • the valve slide 66 has reached its starting position and the valve member 62 (diagram 102) opens a pressure medium passage from the channel 70 to the return 48.
  • the channel 28 is thus relieved of pressure via the radial channels 71 and the channel 70, as a result of which the closing member 14 due to the the pressure springs 30 and 32 applied force is moved back into the closed position and thereby closes the injection openings 16 again.
  • the injection cycle described is therefore pressure-controlled.
  • Actuator 52 executes a first stroke movement H1 according to diagram 100 up to time T1, which continues with a certain time delay at time T2 in a second stroke movement H2 up to the maximum stroke. From time T3, the actuation of actuator 52 is reduced to zero in a single step S1. Due to the stroke movement Hl, the valve member 62 first closes the valve seat 72 (time T5) and keeps it closed until time T6. Until the beginning of the second Stroke movement H2 (time T2), the closing member 14, ie the pressure medium connection of the transverse channel 83 to the channel 36 is interrupted, then opened. This is expressed by the dotted curve in diagram 102.
  • FIG. 4 shows a further injection cycle.
  • the actuator 52 executes a first stroke movement H1 up to the time T1 and, comparable to FIG. 3, performs a second stroke movement H2 with a smaller time delay from the time T2 up to the maximum stroke. From the time T3, this maximum stroke is withdrawn in two stages S1 and S2. The second stage S2 takes place at time T4. Between the times T2 and T3, as the dotted characteristic curve in diagram 102 shows, there is a pressure medium connection between the channels 70 and 36 - l ü ⁇
  • FIG. 5 shows a first advantageous development of an injector 10 according to the invention, which differs from the embodiment according to FIG. 1 primarily in that the valve slide 66 does not require a transverse bore 83. This is done by training a second
  • FIG. 6 A second advantageous development of the injector 10 is shown in FIG. 6.
  • an intermediate stroke stop 90 is installed, which facilitates the positioning of the valve element 50 in an intermediate position and the overshoots when the actuator moves rapidly 52 avoids. This is in the intermediate position
  • Such an intermediate position can be seen graphically in the diagrams 100 in FIGS. 3 and 4 at the end of the stroke movement H1 of the actuator 52.
  • the intermediate stroke stop 50 is designed in the form of a two-spring system and accordingly has a first spring 91, which ensures that the second valve member 64 bears against the pin 68 of the valve slide 66, and a second spring 92, which loads a stop disk 93.
  • This stop disk 93 is provided with a central opening 94 through which the first spring 91 interacts with the valve slide 66.
  • stop disc 93 is guided in an axially movable manner in a groove-shaped extension 95 of the slide bore 45, the limits of the extension 45 forming stop shoulders.
  • the stop shoulder facing the second valve member 64 defines the intermediate position of the valve element 50, while the stop facing away from it defines its maximum stroke.
  • the inlet 46 opens in the direction of flow before Stop disk 93 in the slide bore 45.
  • Figure 7 shows a second construction variant of an inventive
  • Injector 210 m a simplified schematic representation. This differs mainly in the structural design of an actuating device 244 from the first construction variant described above, but has essentially the same functional properties. Differences exist due to the reversal of movement of the valve slide 250 explained below and the initially open starting position of the valve member 264.
  • Actuating device 244 consisting of an externally controllable piezoelectric actuator 252, a hydraulic translator 254 and a valve element 250 for controlling pressure medium connections between an inlet 246, a return 248 and two control channels 228 and 236 leading to a closing element 214.
  • the valve element 250 comprises a multiply offset Slide bore 245 of a housing 220 displaceably guided valve slide 266 and a valve member 264 which can be actuated by the valve slide in the form of a ball. The latter is used with the aid of a closing spring 284 to rest on the valve slide
  • valve slide 266 has a pin 268 at one of its ends, which penetrates the opening of a constriction 269 of the slide bore 245.
  • the constriction 269 forms a valve seat 282 controlled by the valve member 264, which is open in the illustrated basic position of the injector 210 according to FIG. 2.
  • An additional valve seat 272 is formed on the side of the constriction 269 opposite the valve seat 282. This is from the valve member 264 facing Face of the valve spool 266 controlled.
  • This valve seat 272 is closed in the basic position, so that there is no pressure medium connection between the inlet 246 and the control channel 228.
  • This control channel 228 is coupled to the return 248 via the opened valve seat 282 and is thus relieved of pressure.
  • the closing member 214 of the injector 210 is held by its two compression springs 230, 232 m in the closed position - the injection openings 216 are closed.
  • valve spool 266 is at least partially penetrated by channels 270 carrying pressure medium, which pass the pressure level of the inlet 246 to a cavity 310 that results between a constriction of the valve spool 266 and the slide bore 245.
  • a control edge 312 on the circumference of the valve slide 266 seals this cavity 310 from the second control channel 236 leading to the closing element 214.
  • an additional inlet instead of channels 270 in valve slide 266, which opens directly into cavity 310. This inlet could also be designed as a branch to the inlet 246 formed in the housing 220.
  • Valve slide 266 interacts with an intermediate stroke limiter 290. This is arranged coaxially to the valve slide 266 and has two plungers 314, 316 which are arranged coaxially to one another and are guided so as to be movable relative to one another. One of the plungers 314, 316 acts directly on the valve slide 266. Both plungers 314, 316 are loaded by separate springs 291, 292, one of which is in the slide bore 245 St ⁇ nse tig closing plug 318 supports, while the other is supported on a m of the slide bore 245 anchored support ring 320. The support ring 320 also forms the stroke limitation for the tappet 314.
  • valve slide 266 m can be moved into an intermediate position without this resulting in an undesired connection of the second control channel due to inaccuracies in the actuation of the actuator 252 or by overshoots 236 can come with the cavity 310.
  • the actuator 252 is arranged perpendicular to the longitudinal axis of the valve slide 266. It interacts directly with a first piston 256 of the translator 254.
  • This has a second piston 258, which in the exemplary embodiment is made in one piece with the valve slide 266 and is arranged perpendicular to the first piston 256.
  • the pistons 256, 258 have piston diameters of different sizes and enclose a pressure medium-filled transmission chamber 260.
  • the tappet 316 of the intermediate stroke stop 290 forms a further limitation of this translation chamber 260.
  • a leakage channel 322 opens into the slide bore 245 between the two devices.
  • This leakage channel 322 leads any pressure medium leakage to a pressure medium reservoir, which cannot be seen in FIG. 2.
  • the actuator 252 When the actuator 252 is actuated, it performs a lifting movement which is transmitted to the first piston 256 of the translator 254. Its pressure medium displacement m in the booster chamber 260 causes a corresponding deflection of the one pushing ice 316 of the intermediate stroke stop 290. The aim is to lift it off the end face of the valve slide 266.
  • the force exerted by the compression spring 284 on the valve member 264 and transmitted as a result of the mechanical coupling to the valve slide 266 ensures that it is in contact, so that the valve slide 266 is also deflected.
  • the valve member 264 closes the valve seat 282, at the same time the valve member 262, which is formed in one piece with the valve slide 266, releases the valve seat 272.
  • the first control channel 228 thus comes under high pressure, on the basis of which the closing member 214 has one
  • Opening movement executes as soon as the opening pressure in the annular space 224 is exceeded.
  • valve slide 266 lifts off valve member 264 and control edge 312 opens a pressure medium connection from cavity 310 to second control channel 236.
  • the pressure medium channels 270 in valve slide 266 thus prevail in the two control channels 228, 236 and m Pressure chamber 233 identical pressure level.
  • the latter closes due to the force of its compression springs 230, 232, although high pressure is still present in the annular space 224.
  • the control edge 312 of the valve slide 266 closes off the second control channel 236 again.

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  • 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)

Abstract

L'invention concerne un injecteur (10, 210), servant en particulier à commander l'injection de carburant dans la chambre de combustion d'un moteur à combustion interne. Cet injecteur présente un obturateur (14, 214), commandant des orifices d'injection (16, 216), et une unité d'actionnement (44, 244). Cette dernière comprend un actionneur piézoélectrique (52, 252) et un élément soupape (50, 250) servant à réguler les liaisons entre des canaux (28, 228, 36, 236, 46, 246, 48, 248) acheminant un fluide sous pression. Selon l'invention, l'élément soupape (50, 250) permet de créer des cycles d'injection de l'injecteur (10, 210) qui sont commandés par la pression et par la levée du pointeau, car il régule des liaisons entre au moins une arrivée (46, 246), un retour (48, 248) de fluide de pression et deux canaux de commande (28, 228 et 36, 236) et peut être placé dans au moins trois positions de commande.
PCT/DE2000/002679 1999-08-20 2000-08-10 Injecteur WO2001014718A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020017004876A KR20010083912A (ko) 1999-08-20 2000-08-10 분사기
JP2001518567A JP2003507643A (ja) 1999-08-20 2000-08-10 インジェクタ
EP00956131A EP1125048A1 (fr) 1999-08-20 2000-08-10 Injecteur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19939448A DE19939448A1 (de) 1999-08-20 1999-08-20 Injektor
DE19939448.2 1999-08-20

Publications (1)

Publication Number Publication Date
WO2001014718A1 true WO2001014718A1 (fr) 2001-03-01

Family

ID=7918974

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/002679 WO2001014718A1 (fr) 1999-08-20 2000-08-10 Injecteur

Country Status (6)

Country Link
EP (1) EP1125048A1 (fr)
JP (1) JP2003507643A (fr)
KR (1) KR20010083912A (fr)
CZ (1) CZ20011385A3 (fr)
DE (1) DE19939448A1 (fr)
WO (1) WO2001014718A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2817918A1 (fr) * 2000-12-07 2002-06-14 Bosch Gmbh Robert Injecteur de carburant a haute pression commande en pression avec un comportement d'ouverture et de fermeture etage
DE102020113031A1 (de) 2020-05-13 2021-11-18 Gabriele Rumrich Hygiene-Griffschutz

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10032924A1 (de) * 2000-07-06 2002-01-24 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10053903A1 (de) * 2000-10-31 2002-05-29 Bosch Gmbh Robert Hub-/ und Druckgesteuerter Injektor mit Doppelschieber
DE10122246A1 (de) * 2001-05-08 2002-11-21 Bosch Gmbh Robert Injektor zum Einspritzen von Kraftstoff mit in Reihe geschalteten Steuerventilgliedern
DE10141110A1 (de) * 2001-08-22 2003-03-20 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE102004002286A1 (de) * 2004-01-16 2005-08-11 Man B & W Diesel Ag Kraftstoffeinspritzdüse
DE102005058556B4 (de) * 2005-12-08 2017-04-06 Man Diesel & Turbo Se Injektor eines Kraftstoffeinspritzsystems
DE102006039265A1 (de) * 2006-08-22 2008-02-28 Volkswagen Ag Kraftstoffeinspritzvorrichtung
DE102006039263A1 (de) * 2006-08-22 2008-03-06 Volkswagen Ag Kraftstoffeinspritzvorrichtung
DE102015011028A1 (de) * 2015-08-22 2017-02-23 L'orange Gmbh Dual-Fuel-Kraftstoffinjektoranordnung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5213084A (en) * 1990-06-20 1993-05-25 Robert Bosch Gmbh Fuel injection system for internal combustion engines
DE19624001A1 (de) * 1996-06-15 1997-12-18 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5213084A (en) * 1990-06-20 1993-05-25 Robert Bosch Gmbh Fuel injection system for internal combustion engines
DE19624001A1 (de) * 1996-06-15 1997-12-18 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2817918A1 (fr) * 2000-12-07 2002-06-14 Bosch Gmbh Robert Injecteur de carburant a haute pression commande en pression avec un comportement d'ouverture et de fermeture etage
DE102020113031A1 (de) 2020-05-13 2021-11-18 Gabriele Rumrich Hygiene-Griffschutz

Also Published As

Publication number Publication date
KR20010083912A (ko) 2001-09-03
CZ20011385A3 (cs) 2002-02-13
JP2003507643A (ja) 2003-02-25
EP1125048A1 (fr) 2001-08-22
DE19939448A1 (de) 2001-03-01

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