DE499937C - Fluid-controlled fuel injector - Google Patents

Fluid-controlled fuel injector

Info

Publication number
DE499937C
DE499937C DEL66904D DEL0066904D DE499937C DE 499937 C DE499937 C DE 499937C DE L66904 D DEL66904 D DE L66904D DE L0066904 D DEL0066904 D DE L0066904D DE 499937 C DE499937 C DE 499937C
Authority
DE
Germany
Prior art keywords
control pin
fuel
control
fluid
controlled fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEL66904D
Other languages
German (de)
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.)
PROSPER L ORANGE DIPL ING
Original Assignee
PROSPER L ORANGE DIPL ING
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 PROSPER L ORANGE DIPL ING filed Critical PROSPER L ORANGE DIPL ING
Priority to DEL66904D priority Critical patent/DE499937C/en
Application granted granted Critical
Publication of DE499937C publication Critical patent/DE499937C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/08Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/06Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves being furnished at seated ends with pintle or plug shaped extensions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10Other injectors with elongated valve bodies, i.e. of needle-valve type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/07Nozzles and injectors with controllable fuel supply
    • F02M2700/074Injection valve actuated by fuel pressure for pressurised fuel supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

Flüssigkeitsgesteuertes Brennstoffeinspritzventil Bei Brennstoffeinspritzventilen nach Patent 4.;ä 898 ist die Anbringung einer oberen Hubbegrenzung für den Steuerschieber und eines sicher gegen Gasdruck dichtenden Rückschlagventils erforderlich, ersteres, um dem unter Federdruck stehenden Steuerschieber eine Ruhelage zu geben, letzteres, um die Brennstoffzuleitung abzuschließen bis zu dein Zeitpunkt, in welchem der Brennstoffdruck den Arbeitsdruck im Zylinder überschreitet.Liquid-controlled fuel injection valve With fuel injection valves according to patent 4; ä 898, it is necessary to attach an upper stroke limiter for the control slide and a non-return valve that securely seals against gas pressure; your point in time at which the fuel pressure exceeds the working pressure in the cylinder.

Gemäß der Erfindung werden beide Bedingungen dadurch vereinigt, daß der Steuerschieber mit dem in der Brennstoffdruckleitung vor der Einspritzdüse befindlichen Rückschlagventil durch eine Spindel v erbunclen ist, so daß (las Rückschlagventil und der Steuerzapfen im Schieherspiegel miteinander in Bewegung gesetzt werden.According to the invention, both conditions are combined in that the control slide with the one located in the fuel pressure line in front of the injection nozzle The non-return valve is blocked by a spindle so that (read the non-return valve and the control pin in the sliding mirror are set in motion with one another.

Abb. i zeigt das Einspritzventil im Schnitt, Abb. 2 und 3 veranschaulichen zwei besondere Ausführungen der Erfindung. In den Abb. d und 5 sind zwei verschiedene Ausführungen des Steuerzapfens und des Schieberspiegels hei Beginn und bei voller öffnung dargestellt.Fig. I shows the injection valve in section, Fig. 2 and 3 illustrate two particular embodiments of the invention. In fig. D and 5 there are two different ones Execution of the control pin and the slide mirror at the beginning and at full opening shown.

Das Ventilgehäuse a ist an seiner in das Zylinderinnere gerichteten Seite durch die Verschraubung; b abgeschlossen, durch welche die Platte c am Ventilgehäuse a befestigt ist. In dem zylindrischen Schieberspiegel der Platte c gleitet der Steuerzapfen d clec Steuerschiebers e, mit dessen oberem spindelförmigem Teil f das Rückschlagventil g verbunden ist. Dieses wird durch die Feder h gegen seinen Sitz gedrückt und verschließt die Brennstoffzuleitung i.The valve housing a is directed into the interior of the cylinder Side through the screw connection; b completed, through which the plate c on the valve housing a is attached. The control pin slides in the cylindrical slide mirror of plate c d clec control slide e, with its upper spindle-shaped part f the check valve g is connected. This is pressed against its seat by the spring h and closes the fuel supply line i.

Beim Auftreten des Einspritzdruckes in d: r Brennstoffzuleitung i wird der Ventilkegel g entgegen dem Druck der Feder h, welche verhältnisinäßig gering belastet ist, geöffnet, und gleichzeitig wirkt der volle Druckunterschied zwischen dem durch die Brennstoffpumpe erzeugten Druck und dein Arbeitsdruck im Zylinder auf den Steuerzapfen d im Schieberspiegel der Platte h. Dieser Druck stellt die eigentliche Belastung des Steuerschiebers c dar und drückt diesen so weit herunter, bis der am Steuerzapfen d freiwerdende Querschnitt der durch die Feder gegebenen Druckdifferenz entspricht. Uni diese Druckdifferenz rasch und sicher herzustellen, wird man zweckmäßig das die Brennstoffzuleitung i absperrende Rückschlagventil um ein Geringes früher öffnen lassen, bevor der Steuerzapfen d dein Brennstoff Gien Austritt in den Verbrennungsraum freigibt. Dieses wird z. B. dadurch erreicht, daß die steuernde Kante des Steuerzapfens d die Steuerkante des Schieberspiegels in der Plattec später überschleift, als das RückschlagVentil g öffnet.When the injection pressure occurs in the fuel supply line i the valve cone g is against the pressure of the spring h, which is relatively low is loaded, opened, and at the same time the full pressure difference between the pressure generated by the fuel pump and your working pressure in the cylinder on the control pin d in the slide mirror of the plate h. This pressure represents the actual load on control spool c and pushes it down so far until the cross-section released at the control pin d is the one given by the spring Pressure difference corresponds. Uni to establish this pressure difference quickly and safely, it is advisable to switch the check valve which shuts off the fuel supply line i Open a little earlier before the control pin d pour your fuel Releases exit into the combustion chamber. This is z. B. achieved in that the controlling edge of the control pin d the control edge of the slide mirror in the plate loops later when the non-return valve g opens.

Abb.2 veranschaulicht eine Ausführung, bei welcher der Steuerschieber e a'herhalb des Rückschlagventils g angeordnet ist, das an seiner Unterseite den Steuerzapfen d trägt. Eine wesentlich gleiche Anordnung zeigt Abb. 3, dessen Rücksch1agventil g1 jedoch einen ebenen Sitz aufweist, wodurch geringe Ungenauigkeiten der Herstellung ihren Ausgleich finden. Zu letzterem Zwecke kann auch der Schaft f, welcher den Steuerschieber c mit dem Rückschlagventil g verbindet, aus zwei Teilen hergestellt werden, welchebeispielsweise durch eine bajonettartige Kupplung, die beiden Teilen ein geringes seitliches Spiel läßt, miteinander verbunden sind. Durch Einfügen eines axialen Spieles in die Kupplung kann man ferner auch an dieser Stelle die Öffnungszeit des Rückschlagventils gegen diejenige des Steuerzapfens vorverlegen.Fig.2 illustrates an embodiment in which the control slide e a'herhalb the check valve g is arranged, which is an his Underside carries the control pin d. A substantially identical arrangement is shown in Fig. 3, the non-return valve g1, however, has a flat seat, resulting in low Inaccuracies in production find their compensation. For the latter purpose can also the shaft f, which connects the control slide c with the check valve g, be made of two parts, which for example by a bayonet-like Coupling that allows both parts to have a small amount of lateral play, connected to one another are. By inserting an axial play in the coupling one can also at this point the opening time of the check valve compared to that of the control pin bring forward.

Um bei Brennstoffeinspritzventilen vorliegender Art eine gute Verteilung des Brennstoffes zu erzielen, ist es vorteilhaft, den Winkel des Einspritzkegels während des Hubes des Steuerzapfens d zu verändern. Bei einer Ausführung, bei welcher z. B. der Übergang vom Steuer zapfen d auf den ihn mit dem Steuerschieber e oder dem Rückschlagventil g verbindenden schwächeren Schaft Kegelform hätte, würde der Einspritzkegel des austretenden Brennstoffes während des ganzen Hubes des Steuerzapfens d der gleiche bleiben. Wird dagegen, wie in Abb. 4 gezeigt, dem Übergang vom Schaft auf den Steuerzapfen die Form eines von einer Kurve gebildeten Rotationskörpers gegeben, so wird die Richtung des austretenden Brennstoffstrahles nur im Beginn der Öffnung von dem Endwinkel des Rotationskörpers, im weiteren Verlauf aber von der Richtung der größten Austrittsgeschwindigkeit, d. h. von der Stelle des engsten Querschnittes, bestimmt, den der Schaft des Steuerzapfens d im Schieberspiegel der Platte c freigibt. Dieser Querschnitt ändert sich beim Öffnen in der Weise, daß der zu Beginn flache Brennstoffkegel bei weiterer Öffnung des Steuerzapfens spitzer wird und infolgedessen einen größeren Teil des Verbrennungsraumes bestreicht.In order to ensure good distribution in the case of fuel injectors of the present type To achieve the fuel, it is advantageous to adjust the angle of the injection cone to change during the stroke of the control pin d. In an embodiment in which z. B. the transition from the control tap d to him with the spool e or the weaker stem connecting the check valve g would have a conical shape, the Injection cone of the exiting fuel during the entire stroke of the control pin d stay the same. On the other hand, as shown in Fig. 4, the transition from the shaft on the control pin the shape of a body of revolution formed by a curve given, the direction of the exiting fuel jet is only given at the beginning of the opening from the end angle of the rotating body, but in the further course of the direction of the greatest exit velocity, d. H. from the place of the closest Cross-section, determined that the shaft of the control pin d in the slide mirror of the Plate c releases. This cross-section changes when opening in such a way that the initially flat fuel cone becomes more pointed when the control pin is opened further is and as a result brushes a larger part of the combustion chamber.

Der gleiche Zweck wird nach Abb. 5 dadurch erreicht, daß die steuernde Kante der Platte c entsprechend abgerundet ist. An dieser abgerundeten Kante entlang wandert dann während des Hubes die Steuerkante des Steuerzapfens d, welche selbst scharf oder abgerundet sein kann.The same purpose is achieved according to Fig. 5 in that the controlling Edge of the plate c is rounded accordingly. Along this rounded edge then migrates during the stroke the control edge of the control pin d, which itself can be sharp or rounded.

Claims (1)

PATENTANSPRUCH: Flüssigkeitsgesteuertes Brennstoffeinspritzventil nach Patent 478 898, dadurch gekennzeichnet, daß der Steuerschieber (e mit dem in der Brennstoffdruckleitung vor der Einspritzdüse befindlichen Rückschlagventil (g) durch eine Spindel (f) verbunden ist, so daß beide Ventile miteinander in Bewegung gesetzt werden.PATENT CLAIM: Liquid-controlled fuel injection valve according to patent 478 898, characterized in that the control slide (e) is connected to the check valve (g) in the fuel pressure line upstream of the injection nozzle by a spindle (f) so that both valves are set in motion with one another.
DEL66904D 1926-09-30 1926-09-30 Fluid-controlled fuel injector Expired DE499937C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL66904D DE499937C (en) 1926-09-30 1926-09-30 Fluid-controlled fuel injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL66904D DE499937C (en) 1926-09-30 1926-09-30 Fluid-controlled fuel injector

Publications (1)

Publication Number Publication Date
DE499937C true DE499937C (en) 1930-06-14

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Family Applications (1)

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DEL66904D Expired DE499937C (en) 1926-09-30 1926-09-30 Fluid-controlled fuel injector

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439832A (en) * 1938-07-20 1948-04-20 Voit Willy Injection nozzle for internalcombustion engines
US2552658A (en) * 1946-11-13 1951-05-15 American Bosch Corp Nozzle for gas turbines
US2623782A (en) * 1949-11-26 1952-12-30 Gustafson Carl Atomizing apparatus
US2656218A (en) * 1949-07-21 1953-10-20 John F Campbell Spray nozzle
DE916011C (en) * 1951-09-27 1954-08-02 Daimler Benz Ag Method and device for injecting fuel into internal combustion engines
DE921837C (en) * 1952-09-05 1954-12-30 Daimler Benz Ag Injection nozzle with nozzle valve opening in the direction of flow
US2749182A (en) * 1953-01-27 1956-06-05 John F Campbell Nozzle construction
US2757968A (en) * 1956-08-07 campbell
DE967935C (en) * 1953-12-13 1957-12-27 Kloeckner Humboldt Deutz Ag Fuel injector
DE1086487B (en) * 1955-03-22 1960-08-04 Borg Warner Fuel injector
US3143163A (en) * 1959-09-07 1964-08-04 Renner Josef Oil burner
DE1181987B (en) * 1959-04-08 1964-11-19 Caterpillar Tractor Co Eine Na Fuel injector for internal combustion engines
US3593924A (en) * 1969-02-14 1971-07-20 Bosch Gmbh Robert Valve for the advance and main injection of fuel
US4344575A (en) * 1978-06-14 1982-08-17 Robert Bosch Gmbh Fuel injection nozzle for internal combustion engines
AT525439A4 (en) * 2021-10-14 2023-04-15 Avl List Gmbh Internal combustion engine with spark ignition

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757968A (en) * 1956-08-07 campbell
US2439832A (en) * 1938-07-20 1948-04-20 Voit Willy Injection nozzle for internalcombustion engines
US2552658A (en) * 1946-11-13 1951-05-15 American Bosch Corp Nozzle for gas turbines
US2656218A (en) * 1949-07-21 1953-10-20 John F Campbell Spray nozzle
US2623782A (en) * 1949-11-26 1952-12-30 Gustafson Carl Atomizing apparatus
DE916011C (en) * 1951-09-27 1954-08-02 Daimler Benz Ag Method and device for injecting fuel into internal combustion engines
DE921837C (en) * 1952-09-05 1954-12-30 Daimler Benz Ag Injection nozzle with nozzle valve opening in the direction of flow
US2749182A (en) * 1953-01-27 1956-06-05 John F Campbell Nozzle construction
DE967935C (en) * 1953-12-13 1957-12-27 Kloeckner Humboldt Deutz Ag Fuel injector
DE1086487B (en) * 1955-03-22 1960-08-04 Borg Warner Fuel injector
DE1181987B (en) * 1959-04-08 1964-11-19 Caterpillar Tractor Co Eine Na Fuel injector for internal combustion engines
US3143163A (en) * 1959-09-07 1964-08-04 Renner Josef Oil burner
US3593924A (en) * 1969-02-14 1971-07-20 Bosch Gmbh Robert Valve for the advance and main injection of fuel
US4344575A (en) * 1978-06-14 1982-08-17 Robert Bosch Gmbh Fuel injection nozzle for internal combustion engines
AT525439A4 (en) * 2021-10-14 2023-04-15 Avl List Gmbh Internal combustion engine with spark ignition
AT525439B1 (en) * 2021-10-14 2023-04-15 Avl List Gmbh Internal combustion engine with spark ignition

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