DE485464C - Fuel distribution line for several fuel valves fed by a common pump and controlled by the fuel pressure - Google Patents

Fuel distribution line for several fuel valves fed by a common pump and controlled by the fuel pressure

Info

Publication number
DE485464C
DE485464C DEH114192D DEH0114192D DE485464C DE 485464 C DE485464 C DE 485464C DE H114192 D DEH114192 D DE H114192D DE H0114192 D DEH0114192 D DE H0114192D DE 485464 C DE485464 C DE 485464C
Authority
DE
Germany
Prior art keywords
fuel
valves
distribution line
pressure
controlled
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
DEH114192D
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEH114192D priority Critical patent/DE485464C/en
Application granted granted Critical
Publication of DE485464C publication Critical patent/DE485464C/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
    • F02M55/00Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004Joints; Sealings
    • F02M55/005Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
    • 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
    • F02M55/00Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025Common rails

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

Brennstoffverteilerleitung für mehrere von einer gemeinsamen Pumpe gespeiste und vom Brennstoffdruck gesteuerte Brennstoffventile Es ist bekannt, für mehrere Zylinder einer Brennkraftmaschine eine gemeinsame Brennstoffpumpe zu verwenden und den Brennstoff mittels Druckluft einzuspritzen. Um die Ungleichförmigkeiten des Widerstandes in den einzelnen Rohrleitungen auszugleichen, werden feine kalibrierte Öffnungen in den Leitungen der einzelnen Zylinder vorgesehen. Bei Mehrzylindermaschinen, deren zwangläufig gesteuerte Brennstoffventile von einem Verteiler gespeist werden, wurde die Regelung der Einspritzung dadurch von dem Ventilhub unabhängig gegemacht und der Öffnungsdauer angepaßt, daß in die einzelnen Verteilungsleitungen Drosselungen eingebaut wurden.Fuel distribution line for several from a common pump fed and fuel pressure controlled fuel valves It is known for several cylinders of an internal combustion engine to use a common fuel pump and inject the fuel using compressed air. About the irregularities To compensate for the resistance in the individual pipelines are fine calibrated Openings are provided in the lines of the individual cylinders. For multi-cylinder machines, whose positively controlled fuel valves are fed from a distributor, the regulation of the injection was thereby made independent of the valve lift and adapted to the opening time that throttling in the individual distribution lines were installed.

Die Erfindung bezieht sich auf Brennstoffverteilerleitungen für mehrere von einer gemeinsamen Pumpe gespeiste und vom Brennstoffdruck gesteuerte Brennstoffventile für Brennkraftmaschinen mit luftloser Brennstoffeinspritzung und bezweckt die Erzielung eines gleichzeitigen Öffnens der Ventile. Die Erfindung löst die Aufgabe in der Weise, daß in den von der Verteilerzuleitung abgezweigten Einspritzleitungen je eine Drosselvorrichtung vorgesehen ist.The invention relates to fuel distribution lines for several Fuel valves fed by a common pump and controlled by the fuel pressure for internal combustion engines with airless fuel injection and aims to achieve simultaneous opening of the valves. The invention solves the problem in Way that in each of the injection lines branched off from the distributor feed line a throttle device is provided.

Eine weitere Einzelheit der Erfindung besteht darin, daß die Stärke der einzelnen Drosselwirkungen in ein umgekehrtes Verhältnis zu den einzelnen Widerständen der abgezweigten Einspritzleitungen gebracht wird.Another detail of the invention is that the strength of the individual choke effects in an inverse proportion to the individual resistances the branched injection lines is brought.

Der Vorteil der Erfindung besteht darin, daß auch bei vorzeitigem Öffnen eines oder mehrerer Ventile infolge Nachlassens der Spannung der Belastungsfeder oder einer ungenauen Einstellung der Federn durch den alsdann durch Druckstau in der Verteilungskammer hervorgerufenen erhöhten Verstelldruck ein zwangsweises rasches Öffnen der noch in der Schlußstellung befindlichen Ventile und dadurch eine gute Brennstoffverteilung und gute 'Mischung mit der Verbrennungsluft gewährleistet wird.The advantage of the invention is that even with premature Opening of one or more valves as a result of the release of the tension of the loading spring or an inaccurate setting of the springs by the then pressure build-up in the distribution chamber caused increased adjustment pressure a necessarily rapid Open the valves that are still in the final position and thus a good one Fuel distribution and good 'mixing with the combustion air is guaranteed.

Die Zeichnung veranschaulicht die Erfindung an einem Ausführungsbeispiel. Von der Brennstoffpumpe führt eine Druckleitung a zu einem Verteiler b. Von dem Verteiler führen zu den einzelnen nicht dargestellten Brennstoffventilen Abzweigleitungen c, in welchen je eine Drossel-, linse d an den Anschlußstellen. des Verteilers vorgesehen sind. Die Wirkungsweise der Einrichtung ist folgende: Bei geschlossenen Brennstoffventilen stellt sich vor und hinter den Drossellinsen der gleiche Druck ein, so daß auf die sämtlichen Brennstoffventile der gleiche Verstelldruck einwirkt. Öffnen nun während des Druckhubes des Brennstoffpumpenstempels ein oder mehrere Ventile, z. B. wegen ungenauer Einstellung oder Erschlaffung ihrer Belastungsfeder, früher als die anderen, so fällt in ihren Zuleitungen der Öldruck entsprechend. Vor den Drossellinsen findet jedoch bei fortschreitendem Druckhub des Pumpenstempels eine Druckerhöhung statt, da die Drossellinsen das geförderte Ölnichtungehindert zu den betreffenden Ventilen ablaufen lassen. Dieser Druckstau pflanzt sich auch in die Zuleitungen der sich noch in ihrer Schlußstellung befindlichen Ventile fort und erzwingt ihr Öffnen durch erhöhten Verstelldruck. Sind alle Brennstoffventile geöffnet, so stellt sich in allen Abzweigleitungen c wieder der gleiche Öldruck ein, so daß bei gleicher Bemessung der Einspritzdüsenquerschnitte der einzelnen Ventile nunmehr sämtliche Ventile die gleiche Brennstoffmenge einspritzen.The drawing illustrates the invention using an exemplary embodiment. A pressure line a leads from the fuel pump to a distributor b. Of the Distributors lead to the individual fuel valves, not shown, branch lines c, in each of which a throttle, lens d at the connection points. of the distributor provided are. The device works as follows: When the fuel valves are closed the same pressure arises in front of and behind the throttle lenses, so that on the the same adjustment pressure acts on all fuel valves. Open now during the pressure stroke of the fuel pump plunger one or more valves, for. B. because of inaccurate adjustment or slackening of their loading spring, earlier than the others, the oil pressure falls accordingly in their supply lines. Finds in front of the throttle lenses however, as the pressure stroke of the pump plunger progresses, a pressure increase takes place, since the throttle lenses prevent the oil from reaching the relevant valves let it run off. This pressure build-up is also planted in the supply lines of the valves still in their final position and forces them to open increased adjustment pressure. If all fuel valves are open, it turns into all branch lines c the same oil pressure again, so that with the same dimensioning the injection nozzle cross-sections of the individual valves now all the valves Inject the same amount of fuel.

Besitzen die einzelnen von dem Verteiler zu den Ventilen führenden Leitungen verschiedenen Widerstand, so kann ein gleicher Leitungswiderstand . derselben dadurch herbeigeführt werden, daß die Größe der einzelnen Drosselungen im umgekehrten Verhältnis zu den einzelnen Widerständen der betreffenden Abzweigleitungen bemessen wirdsHave the individual leading from the manifold to the valves Lines have different resistance, so the line resistance can be the same. the same be brought about by the fact that the size of the individual throttles is reversed Measure in relation to the individual resistances of the branch lines concerned it will

Claims (1)

PATL'NTANSPRÜCIIE: i. Brennstoffverteilerleitung für mehrere von einer gemeinsamen Pumpe gespeiste und vom Brennstoffdruck gesteuerte Brennstoffventile, die sich gleichzeitig öffnen sollen, für Verbrennungskraftmaschinen mit luftloser Brennstoffeinspritzung, dadurch gekennzeichnet, daß in den von der Verteilerzuleitung abgezweigten Einspritzleitungen je eine Drosselvorrichtung vorgesehen ist. a. Brennstoffverteilerleitung nach Anspruch i, dadurch gekennzeichnet, daß die Stärke der einzelnen Drosselwirkungen im umgekehrten Verhältnis zu den einzelnen Widerständen der abgezweigten Einspritzleitungen steht. -PATL'NT CLAIM: i. Fuel distribution line for several of one fuel valves fed by a common pump and controlled by the fuel pressure, which should open at the same time, for internal combustion engines with airless Fuel injection, characterized in that in the from the distributor feed line branched injection lines are each provided a throttle device. a. Fuel distribution line according to claim i, characterized in that the strength of the individual throttling effects in inverse proportion to the individual resistances of the branched injection lines stands. -
DEH114192D Fuel distribution line for several fuel valves fed by a common pump and controlled by the fuel pressure Expired DE485464C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH114192D DE485464C (en) Fuel distribution line for several fuel valves fed by a common pump and controlled by the fuel pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH114192D DE485464C (en) Fuel distribution line for several fuel valves fed by a common pump and controlled by the fuel pressure

Publications (1)

Publication Number Publication Date
DE485464C true DE485464C (en) 1929-10-31

Family

ID=7171996

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH114192D Expired DE485464C (en) Fuel distribution line for several fuel valves fed by a common pump and controlled by the fuel pressure

Country Status (1)

Country Link
DE (1) DE485464C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086486B (en) * 1957-03-30 1960-08-04 Bosch Gmbh Robert Fuel injection system for multi-cylinder, four-stroke internal combustion engines working with external ignition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1086486B (en) * 1957-03-30 1960-08-04 Bosch Gmbh Robert Fuel injection system for multi-cylinder, four-stroke internal combustion engines working with external ignition

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