CH368970A - Device for cooling the injection nozzle in an air-cooled internal combustion engine - Google Patents

Device for cooling the injection nozzle in an air-cooled internal combustion engine

Info

Publication number
CH368970A
CH368970A CH6923259A CH6923259A CH368970A CH 368970 A CH368970 A CH 368970A CH 6923259 A CH6923259 A CH 6923259A CH 6923259 A CH6923259 A CH 6923259A CH 368970 A CH368970 A CH 368970A
Authority
CH
Switzerland
Prior art keywords
injection nozzle
cooling
internal combustion
air
combustion engine
Prior art date
Application number
CH6923259A
Other languages
German (de)
Inventor
Bartos Karel
Original Assignee
Tatra Np
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 Tatra Np filed Critical Tatra Np
Publication of CH368970A publication Critical patent/CH368970A/en

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
    • F02M53/00Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04Injectors with heating, cooling, or thermally-insulating means
    • F02M53/043Injectors with heating, cooling, or thermally-insulating means with cooling means other than air cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00Liquid cooling
    • F01P3/12Arrangements for cooling other engine or machine parts
    • F01P3/16Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
    • 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
    • F02M2700/077Injectors having cooling or heating means

Description

  

  Einrichtung zur     Kühlung    der     Einspritzdüse    bei     einem        luftgekühlten    Verbrennungsmotor    Bei luftgekühlten Verbrennungsmotoren erfolgte  die Kühlung der Einspritzdüse bisher     d'urc'h    inten  sive     Wirbelung    der sie umströmenden Kühlluft. Diese  Art der Kühlung verursachte aber     in    der Herstellung  der Motoren, insbesondere hinsichtlich der     Anbrin-          gung    der     Einspritzdüse    unter dem Deckel des Zy  linderkopfes, ziemliche Schwierigkeiten.  



  Eine andere     Art    der Kühlung der Einspritzdüse  besteht darin, dass die Einspritzdüse     durch    eine     Iso-          lierwand    von dem warmen Zylinderkopf     geschützt     und als     Kühlmittel    der flüssige     Brennstoff    selbst ver  wendet wird. Dabei wird der kühle Brennstoff in einer  vor Wärme     geschützten        Leitung    in die Einspritzdüse  geführt und so eine niedrige Temperatur zum     Kühlen     der Düse ausgenützt.  



  Die tatsächliche Ausführung der erwähnten An  ordnung ist ziemlich kompliziert und in der Her  stellung teuer.  



  Ziel der Erfindung ist     es,    die     ,erwähnten    Nachteile  bei einem Verbrennungsmotor zu     beseitigen,    der  durch Schwingen betätigte     Ventile        aufweist.    Die er  findungsgemässe     Kühleinrichtung    ist gekennzeichnet  durch eine im Zylinderkopf unterhalb der Achse  der Schwingen angeordnete     Auffangmulde        für    das  Schmieröl der Schwingen und     einen    Verbindungs  kanal zwischen dieser Mulde und der wärmsten     Stelle     einer weiteren Mulde oberhalb des     Sitzes    der Ein  spritzdüse sowie einen     

  Abflusskanal    von dieser zwei  ten Mulde nach einer     Öffnung    im Zylinderkopf für  den     Ölrücklauf    in das Motorgehäuse.  



  In der Zeichnung ist ein Ausführungsbeispiel der  Erfindung im Schnitt     schematisch        dargestellt.       Das     Schmieröl    wird über einen Kanal im Stössel  10 durch den     Zylinderkopf    6 hindurch der     Lagerung     der die     Ventile    betätigenden Schwingen 7 zugeführt.

    Von dort     tropft    oder fliesst das Öl in     eine    unter  halb der     Schwingenachse    angeordnete     Auffangmulde     1, die über     einen        Kanal    2 mit einer weiteren Mulde 3  kommuniziert, in deren Raum die     Einspritzdüse    4       befestigt    ist.

   Aus der Mulde 3     führt    ein     Abfluss-          kanal    8 nach einer Öffnung 5     im        Zylinderkopf.    Das  kühle Schmieröl fliesst aus der     Mulde    l durch den  Kanal 2 in die untere wärmste Partie der     Mulde    3       oberhalb    des Sitzes 9 der Einspritzdüse 4,

       kühlt    diese  und wird     im    erwärmten     Zustand    durch das aus der       Mul'd'e    1 nachströmende     kühlere    Öl hinausgedrückt  und     fliesst        durch    den Kanal 8 und die     Öffnung    5  zurück     'm    das Motorgehäuse.



  Device for cooling the injection nozzle in an air-cooled internal combustion engine In air-cooled internal combustion engines, the cooling of the injection nozzle has hitherto taken place d'urc'h intensive swirling of the cooling air flowing around it. However, this type of cooling caused considerable difficulties in the manufacture of the engines, particularly with regard to the attachment of the injection nozzle under the cover of the cylinder head.



  Another type of cooling of the injection nozzle consists in that the injection nozzle is protected from the warm cylinder head by an insulating wall and the liquid fuel itself is used as the coolant. The cool fuel is fed into the injection nozzle in a line protected from heat, so that a low temperature is used to cool the nozzle.



  The actual implementation of the mentioned arrangement is quite complicated and expensive to manufacture.



  The aim of the invention is to eliminate the drawbacks mentioned in an internal combustion engine which has valves that are operated by vibrations. He inventive cooling device is characterized by an arranged in the cylinder head below the axis of the rocker collecting trough for the lubricating oil of the rocker and a connecting channel between this trough and the hottest point of another trough above the seat of the A injection nozzle and a

  Drainage channel from this second trough after an opening in the cylinder head for the oil return into the engine housing.



  In the drawing, an embodiment of the invention is shown schematically in section. The lubricating oil is fed via a channel in the tappet 10 through the cylinder head 6 to the mounting of the rocker arms 7 which actuate the valves.

    From there, the oil drips or flows into a collecting trough 1 which is arranged below the pivot axis and which communicates via a channel 2 with another trough 3, in the space of which the injection nozzle 4 is attached.

   A drainage channel 8 leads from the trough 3 to an opening 5 in the cylinder head. The cool lubricating oil flows out of the trough 1 through the channel 2 into the lower warmest part of the trough 3 above the seat 9 of the injection nozzle 4,

       cools this and is pressed out in the heated state by the cooler oil flowing in from the Mul'd'e 1 and flows through the channel 8 and the opening 5 back to the motor housing.

 

Claims (1)

PATENTANSPRUCH Einrichtung zur Kühlung der Einspritzdüse bei einem luftgekühlten Verbrennungsmotor mit durch Schwingen betätigten Ventilen, gekennzeichnet durch eine im Zylinderkopf (6) unterhalb der Achse der Schwingen (7) angeordnete Auffangmulde (1) für das Schmieröl der Schwingen und einen Verbindungs kanal (2) zwischen dieser Mulde und der wärmsten Stelle einer weiteren Mulde (3) PATENT CLAIM Device for cooling the injection nozzle in an air-cooled internal combustion engine with valves operated by rockers, characterized by a collecting trough (1) arranged in the cylinder head (6) below the axis of the rockers (7) for the lubricating oil of the rockers and a connecting channel (2) between this hollow and the warmest part of another hollow (3) oberhalb des Sitzes (9) der Einspritzdüse (4) sowie einen Abflusskanal (8) von dieser zweiten Mulde nach einer Öffnung (5) im Zylinderkopf für den Ölrücklauf in das Motorgehäuse. above the seat (9) of the injection nozzle (4) and an outflow channel (8) from this second trough to an opening (5) in the cylinder head for the oil return into the engine housing.
CH6923259A 1958-05-12 1959-02-06 Device for cooling the injection nozzle in an air-cooled internal combustion engine CH368970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS258158 1958-05-12

Publications (1)

Publication Number Publication Date
CH368970A true CH368970A (en) 1963-04-30

Family

ID=5363340

Family Applications (1)

Application Number Title Priority Date Filing Date
CH6923259A CH368970A (en) 1958-05-12 1959-02-06 Device for cooling the injection nozzle in an air-cooled internal combustion engine

Country Status (1)

Country Link
CH (1) CH368970A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175300A2 (en) * 1984-09-14 1986-03-26 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0175302A2 (en) * 1984-09-14 1986-03-26 Suzuki Motor Co., Ltd Oil passage in an internal engine combustion
EP0177799A2 (en) * 1984-09-14 1986-04-16 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
US5105875A (en) * 1991-01-10 1992-04-21 Sundstrand Corporation Cooling system for auxiliary power unit
CN112943497A (en) * 2021-03-25 2021-06-11 东风商用车有限公司 Forced cooling structure of diesel injector

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175300A2 (en) * 1984-09-14 1986-03-26 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0175302A2 (en) * 1984-09-14 1986-03-26 Suzuki Motor Co., Ltd Oil passage in an internal engine combustion
EP0177799A2 (en) * 1984-09-14 1986-04-16 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0175300A3 (en) * 1984-09-14 1987-03-11 Suzuki Motor Co., Ltd Method ans apparatus for cooling cylinder head of an engine
EP0177799A3 (en) * 1984-09-14 1987-03-11 Suzuki Motor Co., Ltd Apparatus for cooling cylinder head of an engine
EP0175302A3 (en) * 1984-09-14 1987-03-25 Suzuki Motor Co., Ltd Oil passage usable for an engine
US5105875A (en) * 1991-01-10 1992-04-21 Sundstrand Corporation Cooling system for auxiliary power unit
CN112943497A (en) * 2021-03-25 2021-06-11 东风商用车有限公司 Forced cooling structure of diesel injector

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