EP0692626B1 - Doppelstrahl-Kraftstoffeinspritzventil mit Druckluftzerstäubung für Einspritzbrennkraftmaschine - Google Patents

Doppelstrahl-Kraftstoffeinspritzventil mit Druckluftzerstäubung für Einspritzbrennkraftmaschine Download PDF

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Publication number
EP0692626B1
EP0692626B1 EP95401648A EP95401648A EP0692626B1 EP 0692626 B1 EP0692626 B1 EP 0692626B1 EP 95401648 A EP95401648 A EP 95401648A EP 95401648 A EP95401648 A EP 95401648A EP 0692626 B1 EP0692626 B1 EP 0692626B1
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Prior art keywords
holes
fuel
injector
air
calibrated
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Expired - Lifetime
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EP95401648A
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English (en)
French (fr)
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EP0692626A1 (de
Inventor
Michael Pontoppidan
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Marelli France SAS
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Magneti Marelli France SAS
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    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/047—Injectors peculiar thereto injectors with air chambers, e.g. communicating with atmosphere for aerating the nozzles
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0667—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature acting as a valve or having a short valve body attached thereto

Definitions

  • the invention relates to a fuel injector, of the so-called “twin-jet” type, for supplying a internal combustion, at least two intake valves per engine combustion chamber, by fuel injection through two calibrated jet outlet holes fuel, axes diverge from each other and to the two valves.
  • the invention therefore relates to the field of injectors of fuel used in automobile engines equipped a fuel injection system of the so-called "multipoint" type, that is to say comprising, for each combustion chamber, at least one injector to electrical control which opens into the intake manifold in the vicinity of at least two intake valves per cylinder.
  • twin-jet injector which, at reduced engine load, operates as an injector mono-jet, injecting a jet into a first conduit of air intake manifold and directed to the first intake valve, then, at high engine load, which operates as a twin-jet injector, i.e. delivering, plus the first jet, a second jet of fuel injected into the second air intake manifold duct and directed to the second intake valve.
  • twin-jet injector the formation of the fuel mixture in the combustion chamber are better managed, further closing more or less one of the collector ducts of each combustion chamber by a secondary butterfly, downstream of the main throttle regulating the air supply of the intake manifold, while ensuring the preparation of a good air-fuel mixture.
  • twin jet type twin jet type, the injector nose of which has two holes calibrated fuel jet outlet, diverging axes one with respect to the other and oriented towards the two corresponding collector ducts
  • the body of which of injector contains a first electromagnet, comprising a first control winding, supplied with current in all or nothing, to move an integral core in translation a shutter relative to a first calibrated hole, in order to deliver a first draft when the shutter is moved away from the first calibrated hole by displacement of the core against a stop, against a first spring of reminder
  • the injector also comprising a second electromagnet, co-linear to the first, and including a second winding is also electrically powered by all or nothing, to move, against a second return spring, stopper and slide core integral in translation with the shutter, thus spaced from the second calibrated hole, so as to deliver a second jet by the second calibrated hole.
  • the power supply of the winding second electromagnet thus clears the stop limiting the stroke of the core and simultaneously releasing the second hole calibrated to deliver the second jet in addition to the first.
  • the shutter is recalled, with the core, in the closed position of corresponding calibrated holes by return springs.
  • This known injector certainly has the advantages mentioned above, but also the disadvantage of having a crew mobile with large stroke, because the core delimits with the stop device with rectilinear displacement one, respectively two variable air gaps which add up, which is the cause of low electromagnetic efficiency.
  • Another disadvantage of this injector is that it does not also prepare the air-fuel mixture good than that provided by injectors of another type known, pneumatically assisted spraying flow of capped air.
  • an adapter mounted on the nose injector delimits an assist air supply channel spraying, which is put directly into parallel on the air intake circuit for operation at idle or at reduced or medium engine load, from upstream of the butterfly regulating the admission of air into the manifold, so that the channel is supplied with air substantially at atmospheric pressure.
  • the adapter has a plurality of defined air passage holes distributed symmetrically around the axis of the injector nose, so the air jets passing through these holes provide spraying, outside the injector nose, fuel jets spouting calibrated outlet holes fuel in the injector nose.
  • the fuel jets are thus sprayed by the symmetrical diffusion of the air assistance air jets spraying into these fuel jets.
  • an injector air-assisted twin jet injecting fuel through two calibrated jet outlet holes fuel of divergent axes and arranged in a nose of a injector body comprising a shutter integral with translation of an electromagnet core and returned to a closed position of the calibrated holes by means of elastic return against which the shutter is removed from the holes calibrated by the power supply of a solenoid control winding, to deliver at least two fuel jets, the two calibrated holes opening into an assisted spraying area pneumatic, partially delimited by an adapter pneumatic spraying forming, substantially around the injector nose, a channel supplied with assistance air to spraying, substantially at atmospheric pressure, the adapter having a plurality of defined holes of air passage from the channel to the spraying area and of which the axes are substantially transverse to the fuel jets, to pneumatically assist the spraying of said jets.
  • the problem underlying the invention is to remedy to these disadvantages of air assisted injectors from type known and presented above, and the invention aims to propose an injector of the twin-jet type with magnetic circuit more efficient, more compact structure, in which the spraying is ensured by a mechanical device with pneumatic assistance for the preparation of the mixture air-fuel, and at a capped assist air flow.
  • the object of the invention is to offer a twin-jet and assistance type injector pneumatic sprayer, with assist air flow capped, which is better suited than the injectors known to various practice requirements.
  • the invention provides an injector of the twin-jet type as known from DE-A-41 29 834, and which characterized in that the means ensuring the dissemination of air assist pneumatic spraying by the adapter have an asymmetrical structure, so that, when the solenoid coil is energized, to low pressure gradients between the supply channel in capped flow assist air and the spray forming part of two collector pipes air intake in the corresponding combustion chamber, at heavy engine loads, two fuel jets passing through the calibrated holes cross the area of spraying towards the ducts, while for strong pressure gradients, at idle and at low loads and one of the sprayed fuel jets is deflected by air jets entering defined holes in the spray area, to the other fuel stream which it mixes in a single jet of sprayed fuel, confined in the space of only one of the collector conduits, so that fuel is selectively injected into one or each of the two manifold conduits.
  • the injector according to the invention modulates the flow of fuel injected into each of the two corresponding air intake manifold ducts in varying the orientation of one of the fuel jets sprayed according to the engine load, and therefore the inlet air pressure gradient.
  • the air regulating throttle intake is half-open, so that the gradient of pressure between the assistance air supply channel, substantially at atmospheric pressure, and the conduits of the manifold, in depression because connected to the intake of engine, is high and the two jets of fuel sprayed come together in one, in the spray area, thanks to the form, section, distribution and number of air passage holes, and this single jet is confined in one of the two corresponding collector pipes.
  • the axes of the two calibrated outlet holes of the injector nose are contained substantially in the same median plane also containing the axis of the injector, general cylindrical shape, as is the case for the most "twin-jet" injectors, it is therefore advantageous if the defined air passage holes of the adapter the injector according to the invention are distributed substantially symmetrically with respect to the median plane containing the axes calibrated holes, but asymmetrically compared to the plane perpendicular to it and passing through the axis of the injector.
  • the hole distribution defined air passage of the adapter is advantageously such that it includes a first hole, the axis of which extends substantially in the median plane containing the axes of the calibrated fuel passage holes, and at least two holes defined on each side of said median plane, and the axes are inclined on said median plane and converge towards inside the spray area.
  • the two holes nose outlet gauges are arranged in the same flat calibration pad, forming both a seat for the hydraulic sprayer shutter and diaphragm fuel, the pellet being substantially perpendicular to the axis of the injector, and cooperating with a plane shutter presenting, on its face facing the patch, two sealing ribs applied against the patch and around the calibrated holes in the closed position of these last.
  • the tablet is maintained against an edge of the body, with interposition of a seal sealing, by a spacer internal to the body and matched to the core for adjusting the axial air gap between the core and a frame of the electromagnet.
  • the shutter is advantageously in one piece with one end of the core, which is tubular and at least partially houses a spring helical compression constituting the return means elastic of the shutter in the closed position of the holes calibrated.
  • the spring helical bears against the flat shutter constituting directly the bottom of the tubular core, to remind towards the pastille.
  • the twin-jet injector partially shown in the figures includes a body 1, essentially cylindrical and of circular section, of axis X-X, the end of which is intended to be turned towards the two intake manifold ducts air to be supplied with fuel is arranged in nose injector 2 in the form of a coaxial cylindrical nozzle to the body 1 around its longitudinal axis X-X.
  • the body 1 encloses a solenoid with single control winding 3, which is cylindrical, tubular and of axis X-X, as well as a fixed internal frame, partially shown in 4.
  • the electromagnet also includes a coaxial core and tubular 5 closed, at its end on the side opposite the winding 3 and to the frame 4, by a flat bottom 6, perpendicular to the X-X axis and constituting a shutter of a single piece with the core 5 to close two calibrated holes 7 and 8 arranged in a seat 9.
  • a helical compression spring 10 taking support, by one end (not shown) against the frame 4 and, by its other end, against the internal face of the plane shutter 6 to recall the latter and the core 5 in the closed position of the calibrated holes 7 and 8, thanks to two annular sealing ribs 11 which are coaxial and projecting from the face of the plane shutter 6 which is facing seat 9, and which are applied by the return of the spring 10 against the internal face of the latter, around the calibrated holes 7 and 8, in the closed position sealed from the latter, as shown in FIG. 1.
  • the seat 9 consists of a calibration pad flat in its central part and mounted perpendicular to the injector X-X axis by pinching its peripheral part thickened between the rim 12 of the body 1, formed by radial deformation towards the inside of the corresponding end of the body 1, and a spacer 13 in support, at its other axial end, against the armature 4, and matched to the core 5 to adjust the variable axial air gap, low value, delimited between the end of the core 5, on the side opposite the seat 9, and the frame 4.
  • a seal 14 O-ring is mounted between the periphery of the patch 9, on the one hand, and, on the other hand, the body 1 and its rim radial 12.
  • the calibrated holes 7 and 8 of the calibration pad 9 are formed by cylindrical section machining circular and with axes A and B respectively, the holes calibrated 7 and 8 being symmetrical with respect to the X-X axis of the injector and such that their axes A and B are contained in the same median or diametral plane passing through the X-X axis.
  • axes A and B are inclined one with respect to each other and relative to the X-X axis so that they diverge or deviate from each other from their point of competition on the X-X axis, inside the core 5, towards the outside of the injector, as shown in Figure 1.
  • the injector 1 being supplied, in a conventional manner, with fuel under pressure from a distribution manifold, the fuel arrives through the annular passage 15, between the spacer 13 and the core 5, up to the holes calibrated 7 and 8, from which two J1 fuel jets and J2, each directed to one of the two conduits supply manifold for a combustion chamber of the engine, and which, in the absence of any spraying regime pneumatic, would be thin fuel jets, each with low divergence, and substantially centered in the plane median containing the axes X-X, A and B.
  • the dot of 9 gauge which constitutes a seat cooperating with the shutter 6 and its sealing ribs 11, also constitutes a hydraulic fuel spray diaphragm according to the two jets J1 and J2.
  • the injector is fitted with a spray adapter air 16, of generally annular shape, which is mounted around the injector nose 2, and delimits therewith an area 17 pneumatic spraying and assistance, which is part of the two collector pipes to feed.
  • the two calibrated holes 7 and 8 for jets exit of fuel J1 and J2 thus emerge in zone 17, that jets J1 and J2 pass through to reach the conduits of collector proper.
  • the pneumatic spraying adapter 16 capped delimits a peripheral channel 18, which is supplied in air substantially at atmospheric pressure by a pipe connecting it to an air intake located between the outlet engine air filter and throttle body ensuring regulating the main air supply to the engine.
  • Air assist air spraying in the channel 18 of the adapter 16 is introduced in jets of air in the mixing and spraying area 17, to ensure good preparation of the air-fuel mixture in J1 and J2 jets, passing through defined holes of air passage 19 provided with appropriate dimensions in adapter 16 with distribution and orientation particular, which are shown in Figures 1 and 2.
  • Figure 2 shows that the defined holes 19 of air passage of the adapter 16 are distributed symmetrically with respect to the diametral and median plane P containing the axes A and B of calibrated holes 7 and 8 as well as the X-X axis of the injector, and, simultaneously, these holes 9 are asymmetrical with respect to the plane Q, which is perpendicular to the plane P and passes through the injector X-X axis.
  • one of the seven defined holes 19 also has its axis contained in the plane P and the axes of the other holes 19, symmetrical two by two with respect to the plane P, are inclined on this plane and converge towards each other and towards this plan, towards the inside of the spraying area 17.
  • Figure 1 shows that the axis of each hole 19 is also slightly inclined by upstream downstream on the longitudinal axis X-X of the injector, and the air jets are substantially transverse to fuel jets J1 and J2.
  • defined air passage holes 19 have the effect that only heavy engine loads, so when the intake throttle of air is at full opening, the pressure gradient applied to the defined holes 19, between the channel 18 substantially at atmospheric pressure and zone 17 doing part of the intake manifold, is a weak gradient, from so that the air jets passing through the defined holes 19 do not disturb or modify the orientation of the jets J1 and J2.
  • the two corresponding intake manifold ducts are then simultaneously supplied, each by one respectively jets.
  • the twin-jet injector works like a single-jet.
  • the air arriving in zone 17 is efficient to improve spraying of fuel to loads low or medium, at all speeds and at idle as at heavy engine loads, at all engine speeds. Including a excellent spraying is ensured in the modes of operation at reduced load such as when switching on high speed action or decelerations.
  • the injector comprises other conventional means; for example, his body 1 is provided with sealing means in a housing of the collector, opening opposite the collector conduits correspondents. Likewise, the rear entrance or body of the injector, connected to the fuel supply rail, has not been represented.
  • the assist air flow to the spraying of the injector of the invention can be in the range of 0.5 to 0.9 kg / h.
  • a twin jet injector is thus obtained, adapting naturally to a single-jet operation when passing a pneumatic gradient threshold, corresponding to a threshold of engine load, and which is of a simple structure and compact, with a single control winding, a axial air gap which can be small, to guarantee a high efficiency of the electromagnetic circuit, and which ensures excellent spraying of the jet (s) delivered.

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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)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (7)

  1. Doppelstrahl-Brennstoffeinspritzdüse zur Versorgung eines Verbrennungmotors mit wenigstens zwei Einlaßventilen pro Verbrennungskammer des Motors mittels Brennstoffeinspritzung durch zwei kalibrierte Austrittslöcher (7, 8) des Brennstoffstrahls (J1, J2) hindurch, dessen Achsen (A, B) zueinander und in Richtung auf die beiden Ventile divergieren, und die in einer Nase (2) ausgebildet sind, welche zu den beiden Ventilen hin gerichtet ist, wobei ein Körper (1) der Einspritzdüse auch ein Verschlußelement (6) umfaßt, das translatorisch fest mit einem elektromagnetischen Kern (5) verbunden ist und durch elastische Rückholmittel (10) in einer Verschlußposition für die kalibrierten Löcher (7, 8) gehalten wird und dem entgegenwirkend das Verschlußelement (6) durch die elektrische Versorgung einer elektromagnetisch gesteuerten Wicklung (3) von den kalibrierten Löchern (7, 8) entfernt wird, um wenigstens zwei Brennstoffstrahle zuzuführen, wobei die beiden kalibrierten Löcher (7, 8) in einer Zone (17) münden, in der mit pneumatischer Unterstützung eine Zerstäubung herbeigeführt wird und die teilweise durch ein Anschlußstück (16) für die pneumatische Zerstäubung begrenzt ist, welches im wesentlichen um die Nase (2) der Einspritzdüse herum einen Kanal (18) bildet, der zur Unterstützung der Zerstäubung mit Luft, im wesentlichen unter Umgebungsdruck, versorgt wird, wobei das Anschlußstück (16) eine Mehrzahl von definierten Löchern (19) für den Luftdurchgang vom Kanal (18) zur Zone (17) versehen ist und wobei deren Achsen im wesentlichen quer zu den Brennstoffstrahlen (J1, J2) liegen, um die Zerstäubung der Strahle pneumatisch zu unterstützen, dadurch gekennzeichnet, daß die Mittel, die die Diffusion der die pneumatische Zerstäubung durch das Anschlußstück (16) unterstützenden Luft sicherstellen, eine asymmetrische Struktur haben, derart, daß, wenn die elektromagnetische Wicklung (3), für einen schwachen Druckgradienten zwischen dem Kanal (18) zur Versorgung mit Unterstützungsluft unter Spitzenleistung und der Zerstäubungszone (17), die einen Teil der beiden Sammelleitungen für die Luftzuführung in die entsprechende Verbrennungskammer bildet, bei starker Motorlast mit zwei durch die kalibrierten Löcher (7, 8) hindurchgehenden Brennstoffströmen (J1, J2), die die Zerstäubungszone (17) in Richtung der Leitungen durchqueren, versorgt werden, während zur Erzeugung schwacher Druckgradienten, im Leerlauf und bei geringen und mittleren Motorlasten, einer (J1) der zerstäubten Brennstoffströme (J1, J2) durch die Luftströme, die durch die definierten Löcher (19) in die Zone (17) eindringen, zu dem anderen Brennstoffstrom (J2) hin abgelenkt wird, bei welchem sie sich zu einem einzigen zerstäubten Brennstoffstrom vermischen, der in dem Raum einer einzigen der Sammelleitungen aufgenommen ist, so daß der Brennstoff wahlweise in eine oder jede der beiden Sammelleitungen eingespritzt wird.
  2. Einspritzdüse nach Anspruch 1 in allgemein zylindrischer Form, in welcher die Achsen (A, B) der beiden kalibrierten Austrittslöcher (7, 8) der Nase (2) im wesentlichen in einer gleichen Mittel-ebene (P) aufgenommen sind, in der auch die Achse (X-X) der Einspritzdüse aufgenommen ist, dadurch gekennzeichnet, daß die definierten Löcher (19) für den Luftdurchgang des Anschlußstücks (16) in bezug zur Mittelebene (P) im wesentlichen symmetrisch verteilt sind, aber in bezug zur Ebene (Q), die senkrecht zu dieser liegt und durch die Achse (X-X) der Einspritzdüse verläuft, asymmetrisch sind.
  3. Einspritzdüse nach Anspruch 2, dadurch gekennzeichnet, daß die definierten Löcher (19) für den Luftdurchgang des Anschlußstücks (16) aufweisen ein erstes definiertes Loch (19), dessen Achse sich im wesentlichen in der die Achsen (A, B) der kalibrierten Löcher (7, 8) für den Brennstoffdurchgang enthaltenen Mittelebene (P) erstreckt, und wenigstens zwei definierte Löcher (19) an jeder Seite der Mittelebene (P), deren Achsen zur Mittelebene geneigt sind und zum Inneren der Zerstäubungszone (17) hin konvergieren.
  4. Einspritzdüse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die kalibrierten Ausgangslöcher (7, 8) der Nase (2) in ein und derselben ebenen Kalibrierungsplatte (9), im wesentlichen rechtwinklig zur Achse (X-X) der Einspritzdüse ausgebildet sind und mit einer Verschlußebene (6) zusammenwirken, die auf ihrer zu der Platte (9) gerichteten Fläche zwei Dichtrippen (11) aufweist, die an der Platte (9) und um die kalibrierten Löcher (7, 8) herum, in Schließposition der letzteren, anliegen.
  5. Einspritzdüse nach Anspruch 4, dadurch gekennzeichnet, daß die Platte (9) unter Einfügung einer Verbindungsdichtung (14) durch einen inneren Verbindungssteg (13) des Körpers (1) an einer Kante (12) des Körpers (1) gehalten wird und zur Einstellung eines axialen Spaltes zwischen dem Kern (5) und einem elektromagnetischen Anker (4) zusammenpaßt.
  6. Einspritzdüse nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Verschlußteil (6) ein einzelnes Stück mit einem Ende als Kern (5) ist, das rohrförmig ist und wenigstens teilweise eine Schraubendruckfeder (10) aufnimmt, die das elastische Rückholmittel des Verschlußteils (6) in die Schließposition für die kalibrierten Löcher (7, 8) bildet.
  7. Einspritzdüse nach Anspruch 6 soweit dieser auf Anspruch 5 zurückbezogen ist, dadurch gekennzeichnet, daß die Schraubenfeder (10) an dem ebenen Verschlußteil (6) anliegt, welches den Boden des rohrförmigen Kernes (5) bildet, um diesen zu der Platte (9) hin zurückzuholen.
EP95401648A 1994-07-12 1995-07-07 Doppelstrahl-Kraftstoffeinspritzventil mit Druckluftzerstäubung für Einspritzbrennkraftmaschine Expired - Lifetime EP0692626B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9408646A FR2722541B1 (fr) 1994-07-12 1994-07-12 Injecteur de carburant "bi-jet" a aassistance pneumatique de pulverisation, pour moteur a combustioninterne alimente par injection
FR9408646 1994-07-12

Publications (2)

Publication Number Publication Date
EP0692626A1 EP0692626A1 (de) 1996-01-17
EP0692626B1 true EP0692626B1 (de) 1999-03-17

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EP95401648A Expired - Lifetime EP0692626B1 (de) 1994-07-12 1995-07-07 Doppelstrahl-Kraftstoffeinspritzventil mit Druckluftzerstäubung für Einspritzbrennkraftmaschine

Country Status (5)

Country Link
US (1) US5520157A (de)
EP (1) EP0692626B1 (de)
DE (1) DE69508315T2 (de)
ES (1) ES2129778T3 (de)
FR (1) FR2722541B1 (de)

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US6098595A (en) * 1998-08-17 2000-08-08 Cummins Engine Company, Inc. Intake port injection system with shared injectors
DE19916485C2 (de) * 1999-04-13 2001-10-31 Daimler Chrysler Ag Verfahren zum Betrieb einer Hubkolbenbrennkraftmaschine
JP2002276423A (ja) * 2001-03-22 2002-09-25 Komatsu Ltd エンジンの燃料噴射制御装置
US20050092288A1 (en) * 2003-10-30 2005-05-05 Barron Parks Spider Jet for Intake Manifolds
JP6902280B2 (ja) 2015-10-16 2021-07-14 ノストラム エナジー ピーティーイー．リミテッドＮｏｓｔｒｕｍ Ｅｎｅｒｇｙ Ｐｔｅ．Ｌｔｄ． 従来の直接噴射装置の変更方法

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JPH04252867A (ja) * 1991-01-25 1992-09-08 Nissan Motor Co Ltd 内燃機関の燃料供給装置
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DE4129834A1 (de) * 1991-09-07 1993-03-11 Bosch Gmbh Robert Vorrichtung zur einspritzung eines brennstoff-gas-gemisches
JP3053934B2 (ja) * 1991-10-31 2000-06-19 愛三工業株式会社 多孔式インジェクタ

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DE69508315D1 (de) 1999-04-22
EP0692626A1 (de) 1996-01-17
US5520157A (en) 1996-05-28
ES2129778T3 (es) 1999-06-16
DE69508315T2 (de) 1999-11-04
FR2722541A1 (fr) 1996-01-19
FR2722541B1 (fr) 1996-09-20

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