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DE862975C - Fuel injection valve for internal combustion engines - Google Patents

Fuel injection valve for internal combustion engines

Info

Publication number
DE862975C
DE862975C DEK9126A DEK0009126A DE862975C DE 862975 C DE862975 C DE 862975C DE K9126 A DEK9126 A DE K9126A DE K0009126 A DEK0009126 A DE K0009126A DE 862975 C DE862975 C DE 862975C
Authority
DE
Germany
Prior art keywords
valve
collar
fuel
seat
internal combustion
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
DEK9126A
Other languages
German (de)
Inventor
Kurt Dipl-Ing Dr Ziesche
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to DEK9126A priority Critical patent/DE862975C/en
Application granted granted Critical
Publication of DE862975C publication Critical patent/DE862975C/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

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

Die Erfindung betrifft ein, federlyelasbetes Kraftstoffeinsp ritzrückschlagventil für Brennkraftmaschinen, das, in Strömungsrichtung dielst Kraftstoffes hinter seinem Sitz einte Ringfläche. aufweist, die nach dem Anheben des Ventils, vom Kraftstoffdruck beaufschlagt wird, und bei dem die, Ringfläche gebildet wird durch einen Kragen, der in eine -Aus@nehmung des, Ventilkörpers; eingreift, die, in Strömungsrichtung des Kraftstoffes gesehen, mit ihrem Ende und dem Kragen eine Droesels.te@lle bildet, und beii dem ferner die Sitzfläche des Ventils und die Mantelfläche des Kragens kugelig sind und so liegen, daß die kugeligen; Flächen Teile der Oberfläche einer Kugel darstellen (gemäß Patent 823236).-Durch die Ringfläche wird dien Kraftstoff im. der Einspritzleitung nach Abheben des Ventils; von seinem Sitz eine Angriffsfläche dargeboten, die je nach denn Durchmesser des, Kragens wesentlich größer ist als. diejenige, die das, Ventil den Kraftstoff vor dem Offnen darbietet. Zum endgültigen Offnen und Offenhalten dies Ventils ist deshalb nur ein. Bruchteil des zum Anheben des Ventils. erforderlichen Kraftstoffdruckes notwendlig, so daß die Differenz dieser Drücke der Zerstäubung des Kraftstoffes zugute kommt.The invention relates to a spring-loaded fuel injection check valve for internal combustion engines, which, in the direction of flow, the fuel behind his Seat one ring surface. has, after the valve is lifted, from the fuel pressure is acted upon, and in which the, ring surface is formed by a collar, in a -Aus @ recess of the valve body; engages that, in the direction of flow of the fuel, with its end and the collar forming a Droesels.te@lle, and in which also the seat surface of the valve and the lateral surface of the collar are spherical and lie in such a way that the spherical; Faces Parts of the surface of a Represent a sphere (according to patent 823236) in the. the injection line after lifting the valve; an attack surface from his seat presented, which, depending on the diameter of the, collar is much larger than. the one that exposes the valve to the fuel before opening. To the final Opening and keeping this valve open is therefore only one. Fraction of that to lift of the valve. necessary fuel pressure, so that the difference between these Pressures the atomization of the fuel benefits.

Die Aufgabe der Erfindung besteht darin., das Kraftstoffeinspritzventil nach dem Patent 823 236 zu verbessern. Erreicht wird dies erfindungsgemäß daudürch, daß der größte Kragendiurchmesser des Ventils und der Sitzdürchmesser dies. letzteren so gewählt sind, d'aß sie sich etwa wie zoo:95 verhalten. . Bei einem solchen Durchmesserverhältnis expandiert nach Spritzbeginn aus dem Ventil heraus nur eine so, kleine Menge Kraftstoff, daß bei -deren E.ntflammung kein harter Zündstoß mehr auftritt.The object of the invention is. The fuel injection valve according to the patent 823,236 to improve. According to the invention, this is achieved by that the largest collar diameter of the valve and the seat diameter this. the latter are chosen so that they behave something like zoo: 95. . With such a diameter ratio After the start of injection, only such a small amount of fuel expands out of the valve, that when they ignite, there is no longer a hard ignition shock.

In der Zeichnung ist ein Ausführungsbeispiel eines, erfindungsgemäßen Kraftstoffeinopritzventils in Anlehnung an die im Patent 823:236 gezeigten Ausführungsbeispiele diargestellt.In the drawing is an embodiment of one, according to the invention Fuel injection valve based on the exemplary embodiments shown in patent 823: 236 shown.

Die Abbildung zeigt Einzelheiten des erfindungsgemäß-en, Ventils im Bereich der Düsenmündiung in sehr großem Maßstab. Die kugeilige,Sitzfläche-des Ventils ist mit 32, der Kragen mit 33 un!d( seine Mantelfläche mit 34 bezeichnet. Der Kragen 33 ist in der Ausnehmung 35 des. Ventilkörp.ers@36 so anrgeordm.et, daß er mit seiner Mantelfläche 34 und dem scharfkantigen Ende 37 der Au.snehmunig 35 eine Drosselstelle bildet, die bei geöffnetem Ventil einen. Querschnitt freigibt, der kleiner ist als der Durchtrittsquersichnitt am. Ventilsitz 32. Das Ventil wirkt als Zapfendüse. Bei ihm tritt der Kraftstoff aus der Drosselstelle unmittelbar in! den Brennraum der Brennkraftmaschine ein.The figure shows details of the valve according to the invention Area of the nozzle opening on a very large scale. The spherical, seat surface of the valve is marked with 32, the collar with 33 and! d (its outer surface is marked with 34. The collar 33 is in the recess 35 of the valve body.ers@36 so anrgeordm.et that he with his Jacket surface 34 and the sharp-edged end 37 of the receptacle 35 have a throttle point forms that when the valve is open. Releases cross-section that is smaller than the passage cross section on the valve seat 32. The valve acts as a spigot nozzle. With him, the fuel comes in directly from the throttle point! the combustion chamber the internal combustion engine.

Die Abmessungen des Ventils und des Ventilkörpers sind einander so anbgepaßt; daß sich der größte Durchmesser, d1 des Kragens 33 zum Sitzdurchmesser d2 des! Ventils wie 10o: 95 verhält.The dimensions of the valve and the valve body are like each other adapted; that the largest diameter, d1 of the collar 33 is the seat diameter d2 des! Valve behaves like 10o: 95.

Durch das erfindungsgemäße Ventil wird die Gangruhe der mit ihm ausgerüsteten Brennkraftmaschinen.erheblich verbessert.Through the valve according to the invention, the smoothness of the gear equipped with it Internal combustion engines. Significantly improved.

Claims (1)

PATENTANSPRUCH: Fedierbelastetes,Kraftstoffeinspritzrückschlagventil für Brennkraftmuschinen, das in Strömungsrichtung dies- Kraftstoffes hinter seinem Sitz einte Ringfläche aufweist, die nach dem Anheben dies Ventils vom Kraftstoffdruck beaufsthlagt wird, und bei dien die Ringfläche gebildet wird: durch einen Kragen, der in eine Ausnehmung des Ventilkörpers. eingreift; die, in; Strömungsrichtung des: Kraftstoffes gesehen, mit ihrem Ende und dem -Kragen eine Drosselstelle bildet, und bei dien ferner die Sitzfläche des Ventils und die Mantelfläche Beis Kragens kugelig sind und so liegen, daß die kugeligen Flächen Teile der Oberfläche einer Kugel @darstellen (Zusatz zu Patent 823:236), daidurch gekennzeichnet, daß siech der größte Kragendurchr mesisier (dl) des Ventils zum Sitz,durehrnesser (d2) dies, letzteren etwa wie z00:95 verhält. 1 PATENT CLAIM: Spring-loaded, fuel injection check valve for internal combustion engines, which has a single annular surface behind its seat in the direction of flow of the fuel, which is acted upon by the fuel pressure after this valve is lifted, and in which the annular surface is formed: by a collar that fits into a recess in the valve body . intervenes; in the; Direction of flow of the fuel, seen with its end and the collar forming a throttle point, and in which the seat surface of the valve and the lateral surface of the collar are spherical and are located in such a way that the spherical surfaces represent parts of the surface of a sphere (addition to Patent 823: 236), characterized by the fact that the largest collar diameter (dl) of the valve is related to the seat, durehrnesser (d2) this, the latter roughly as 00:95. 1
DEK9126A 1951-02-27 1951-02-27 Fuel injection valve for internal combustion engines Expired DE862975C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK9126A DE862975C (en) 1951-02-27 1951-02-27 Fuel injection valve for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK9126A DE862975C (en) 1951-02-27 1951-02-27 Fuel injection valve for internal combustion engines

Publications (1)

Publication Number Publication Date
DE862975C true DE862975C (en) 1953-01-15

Family

ID=7212272

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK9126A Expired DE862975C (en) 1951-02-27 1951-02-27 Fuel injection valve for internal combustion engines

Country Status (1)

Country Link
DE (1) DE862975C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549153A1 (en) * 1983-07-12 1985-01-18 Lucas Ind Plc Fuel injection jet system
DE3734737A1 (en) * 1986-10-14 1988-04-21 Orbital Eng Pty FUEL INJECTION SYSTEM AND COMBUSTION ENGINE EQUIPPED WITH THIS
EP0756081A1 (en) * 1995-07-25 1997-01-29 Outboard Marine Corporation Fuel valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2549153A1 (en) * 1983-07-12 1985-01-18 Lucas Ind Plc Fuel injection jet system
DE3734737A1 (en) * 1986-10-14 1988-04-21 Orbital Eng Pty FUEL INJECTION SYSTEM AND COMBUSTION ENGINE EQUIPPED WITH THIS
EP0756081A1 (en) * 1995-07-25 1997-01-29 Outboard Marine Corporation Fuel valve

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