DE1954903A1 - Fuel injector - Google Patents

Fuel injector

Info

Publication number
DE1954903A1
DE1954903A1 DE19691954903 DE1954903A DE1954903A1 DE 1954903 A1 DE1954903 A1 DE 1954903A1 DE 19691954903 DE19691954903 DE 19691954903 DE 1954903 A DE1954903 A DE 1954903A DE 1954903 A1 DE1954903 A1 DE 1954903A1
Authority
DE
Germany
Prior art keywords
spring
housing
valve member
fuel injection
injection nozzle
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.)
Granted
Application number
DE19691954903
Other languages
German (de)
Other versions
DE1954903C3 (en
DE1954903B2 (en
Inventor
Scott Peter Frank
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of DE1954903A1 publication Critical patent/DE1954903A1/en
Publication of DE1954903B2 publication Critical patent/DE1954903B2/en
Application granted granted Critical
Publication of DE1954903C3 publication Critical patent/DE1954903C3/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • F16F1/26—Attachments or mountings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)

Description

Kraftetoff-Eiaepritsdü··Fuel egg price dü ··

Si· Srfiaduag betrifft «ia· Kraftatoff-Siaapritsdüs· »it elaea langfestrecktea Gehäuse, eiaea Düsenkopf, der aa eiaea lad· &·· Gehäuse· alt*t oder eiaatüokif aageforat ist uad eiae öffaxiaf sma Durchfließea flüeeigea Kraftatoff· roa eiae» Hal»ß ia Gehäu»· «α· bildet, nad eiaea federbelaitetea Tentilflied itui £·(·1& de· Kraft-Btoffdtirchflu···· dureh die öffnuAf.Si · Srfiaduag concerns «ia · Kraftatoff-Siaapritsdüs ·» it elaea long-stretch a housing, eiaea nozzle head, the aa eiaea lad · & ·· Housing · alt * t or eiaatüokif aageforat is uad eiae öffaxiaf sma Flowa flüeeigea fuel · roa eiae »Hal» ß ia housing »·« α · forms, nad eiaea federbelaitetea Tentilflied itui £ · (· 1 & de · Kraft-Btoffdtirchflu ···· through the opening.

Sie Srfindnaf be*weckt die Sohaffuaf eiaer telohen Siaepsltsdüao in einf aoher und sveokaääi;er Fora·She Srfindnaf awakens the Sohaffuaf a telohen Siaepsltsdüao in einf aoher and sveokaääi; er Fora

Si· Erfindung besteht darin, d«J da· Tentilflied duroh «in· Blattfeder belastet i«t, die in eiaer laaffeetreokten Eaaaez ia u«aiu·· ■Itit.Si · invention consists in d «J da · Tentilflied duroh« in · leaf spring burdened i «t, the Eaaaez ia u« aiu ·· ■ Itit.

- 2 009823/1268 - 2 009823/1268

In «in·» Ausführungsbeispiel einer Einspritzdüse gemäß der Erfindung» wi· ■!· im Schnitt in der beiliegenden Zeichnung dargestellt ist, ist ein iawesentlichen zylindrisches Gehäuse 10 vorgesehen, das an einem Ende mit Gewinde versehen ist. An diesem Ende des Gehäuses sitzt ein Düsenkopf 11 in abgestufter zylindrischer Form, und dieser Düsenkopf wird durch eine Überwurfmutter 12 am Gehäuse gehalten, die sich im Gewindeeingriff mit dem Gehäuse befindet. Der schmalere Teil des Düsenkopfs erstreckt sich durch ein Loch in der Überwurfmutter 12, und am Ende dieses Seils des Düsenkopfes ist eine öffnung vorgesehen, durch die flüssiger Kraftstoff fließen kann.In «in ·» embodiment of an injection nozzle according to the invention » wi · ■! · shown in section in the accompanying drawing there is provided an essentially cylindrical housing 10 which is threaded at one end. At this end of the case sits a nozzle head 11 in a stepped cylindrical shape, and this nozzle head is by a union nut 12 on the housing held, which is in threaded engagement with the housing. The narrower part of the nozzle head extends through a hole in the union nut 12, and at the end of this rope the nozzle head is an opening is provided through which liquid fuel can flow.

Dies« öffnung steht über Kanäle 15, di« im Düsenkopf und im Gehäuse vorgesehen sind, mit einem Kraftstoffein!aß 14 in Verbindung, der in einem sich seitlich erstreckenden Vorsprung des Gehäuses vorgesehen ist. Zum Regeln des Kraftstoffdurohflueses durch die öffnung ist ein Ventilglied im Düsenkopf vorgesehen, das sich gegen die Vorspannung von FeAercitteln axial bewegen kann. Im Betrieb wird unter Druck stehender Kraftstoff ium Einlaß geleitet, und dieser Kraftstoff bewirkt eine Bewegung des Ventilglieds gegen die Wirkung seiner Vorspannung, um ein Durchfließen von Kraftstoff durch die öffnung su ermöglichen.This opening is via channels 15, that is, in the nozzle head and in the housing are provided with a fuel inlet 14 in connection, the is provided in a laterally extending projection of the housing. To regulate the continuous flow of fuel through the opening a valve member is provided in the nozzle head, which can move axially against the bias of FeAercmittel. In operation, under Pressurized fuel passed through the inlet, and that fuel causes a movement of the valve member against the effect of its bias, in order to allow fuel to flow through the opening su enable.

Un das Maß 4er Bewegung des Ventilglieds gegen die Wirkung seiner Vorspannung zu begrenzen, erstreckt sioh ein Vorsprung 15 am Ventilglied aa seinem Ende, das von 4er öffnung entfernt liegt, 4uroh ein· öffnung, die in einer Ansohlagplatte 16 vergesehen ist. Di··· Ansehlagplatt· sitzt swisohen dem End· 4·· Gehäuses und 4«m Düsenkopf· Die Ansohlagplfttte begrenzt 4ie Bewegung tee Ventilglieds daduroh, daß 4er Hauptteil 4·· V«ntilglieds sioh an si· anlegt.Un the measure of 4 movement of the valve member against the effect of his To limit the preload, a projection 15 extends on the valve member aa at its end, which is away from the 4-way opening, 4uroh a opening which is provided in a support plate 16. Di ··· Ansehlagplatt · sits swisohen the end · 4 ·· housing and 4 «m nozzle head · The attachment plate limits the movement of the valve member daduroh, that the 4 main part 4 ·· V «ntil member is attached to it.

- 3 009823/1266 - 3 009823/1266

Im Gehäuse ist eine langgestreckte Kammer 17 vorgesehen, deren Längsaohse relativ zur Längsachse des Yentilglieds versetzt ist. Ferner sitzt innerhalb der Kammer eine gebogene Blattfeder 18, die nur ein Blatt aufweist. Sie Feder konvergiert in Richtung auf ihre Enden und ist an ihren Endeeingerollt. An ihrem am Ventilglied liegenden Ende sitzt die Feder innerhalb einer Ausnehmung, die in einer Sappe 19 vorgesehen ist. Sie Kappe sitzt auf dem Vorsprung 15« Am anderen Ende sitzt die Feder innerh^alb einer entsprechenden Ausnehmung, die in einem Widerlager 20 vorgesehen ist, das in axialer Richtung innerhalb der langgestreckten Kammer verschiebbar ist. Im vorliegenden Ausführungebeispiel ist die Kammer zylindrisch, und zwischen dem Widerlager 20 und dem Gehäuse ist eine Stift/Schlitz-Verbindung vorgesehen, um eine Winkelbewegung des Widerlagers zu verhindern, gleichzeitig aber eine axiale Bewegung zu ermöglichen. Sas Widerlager liegt an einem einstellbaren Anschlag 21 an, mittels dessen die durch die gebogene Feder ausgeübte Kraft eingestellt werden kann.An elongated chamber 17 is provided in the housing, the longitudinal axis of which is offset relative to the longitudinal axis of the valve member. Furthermore, a curved leaf spring 18, which has only one leaf, is seated within the chamber. You pen converges towards on its ends and is curled up at its end. On her on the valve member lying end, the spring sits within a recess which is provided in a sap 19. You cap sits on the ledge At the other end the spring sits inside a corresponding one Recess which is provided in an abutment 20 which is displaceable in the axial direction within the elongated chamber is. In the present exemplary embodiment, the chamber is cylindrical and is between the abutment 20 and the housing a pin / slot connection is provided to prevent angular movement of the abutment, but at the same time axial movement to enable. Sas abutment rests against an adjustable stop 21, by means of which the exerted by the bent spring Force can be adjusted.

In diesem besonderen Ausführungsbeispiel ist die Feder derart gebogen, daß bei Durchgehen der Achse des Ventilglieds durch die Enden der Feder die Achse gegenüber dem gesamten Körper der Feder in der Mitte der Feder seitlich versetzt ist. Es versteht sich, daß die Feder ohne Krümmung geformt und verwendet werden kann und da8 im Bedarfsfall mehr als ein Blatt vorgesehen sein kann.In this particular embodiment the spring is bent in such a way that that when the axis of the valve member passes through the ends of the spring, the axis relative to the entire body of the spring in the Center of the spring is laterally offset. It goes without saying that the spring can be formed and used without curvature and that more than one blade can be provided if necessary.

Patentansprüche tClaims t

009823/1266009823/1266

Claims (5)

PatentansprücheClaims / 1 .^Kraftstoff-Einspritzdüse «it einem langgestreckten Gehäuse, \~y eines Düsenkopf, der an einem Ende des Gehäuses sitzt oder einstückig angeformt ist und eine Öffnung zum Durchfließen flüssigen Kraftstoffe Ton einem Einlaß im Gehäuse aus bildet, und einem federbelasteten Yentilglied zum Hegeln des Kraftstoffdurchflusses durch die Öffnung, dadurch gekennzeichnet, daß das Ventilglied durch eine Blattfeder(i8) belastet ist, die in einer langgestreckten Kaeaer (17) im Gehäuse (10) sitzt./ 1. ^ Fuel injection nozzle "with an elongated housing, \ ~ y a nozzle head, which sits at one end of the housing or is integrally formed and forms an opening for the flow of liquid fuels and an inlet in the housing, and a spring-loaded valve member for Controlling the flow of fuel through the opening, characterized in that the valve member is loaded by a leaf spring (i8) which is seated in an elongated cavity (17) in the housing (10). 2. Kraftstoff-Einspritzdüse nach Anspruch 1, dadurch gekennzeichnet, daß die Feder (18) in der Form eines Blatts vorgesehen ist, das in Richtung auf seine Enden konvergiert. 2. A fuel injection nozzle according to claim 1, characterized in that the spring (18) is provided in the form of a leaf which converges towards its ends. 3. Kraftstoff-Einspritzdüse nach Anspruch 2, dadurch gekennzeichnet, daß das am Ventilglied liegende Ende dar Feder (18) in einer Ausnehmung in einer Kappe (19) sitzt, welche auf einem Vorsprung (15) des Ventilglieds sitzt.3. Fuel injection nozzle according to claim 2, characterized in that that the end of the spring (18) lying on the valve member is seated in a recess in a cap (19) which is on a projection (15) of the valve member is seated. 4. Kraft stoff-Einspritzdüse nach Anspruch 3, dadurch gekennzeichnet, daB das andere Ende der Feder (18) in einer Ausnehmung in einem Widerlager (20) sitit, das innerhalb der Kammer (17) einstellbar gelagert ist.4. fuel injection nozzle according to claim 3, characterized in that that the other end of the spring (18) sits in a recess in an abutment (20) which is adjustable within the chamber (17) is stored. 5. Kraftstoff-Einspritzdüse nach Anspruch 4, dadurch gekennzeichnet, dafi die Enden der Feder (18) eingerollt sind.5. Fuel injection nozzle according to claim 4, characterized in that that the ends of the spring (18) are rolled up. 444
Wa/Se 444
Wh / Se 009823/1266009823/1266
DE1954903A 1968-11-14 1969-10-31 Fuel injector for internal combustion engines Expired DE1954903C3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54067/68A GB1274225A (en) 1968-11-14 1968-11-14 Liquid fuel injection nozzle units

Publications (3)

Publication Number Publication Date
DE1954903A1 true DE1954903A1 (en) 1970-06-04
DE1954903B2 DE1954903B2 (en) 1973-08-02
DE1954903C3 DE1954903C3 (en) 1974-02-28

Family

ID=10469817

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1954903A Expired DE1954903C3 (en) 1968-11-14 1969-10-31 Fuel injector for internal combustion engines

Country Status (5)

Country Link
US (1) US3627209A (en)
JP (1) JPS526409B1 (en)
DE (1) DE1954903C3 (en)
FR (1) FR2023238A1 (en)
GB (1) GB1274225A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341575A1 (en) * 1983-11-17 1985-05-30 Robert Bosch Gmbh, 7000 Stuttgart PRESSURE VALVE FOR FUEL INJECTION PUMPS
WO1996009474A1 (en) * 1994-09-21 1996-03-28 Caterpillar Inc. Fuel injector needle check valve biasing spring

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT388782B (en) * 1985-03-04 1989-08-25 Steyr Daimler Puch Ag FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
US5288462A (en) * 1992-05-18 1994-02-22 Stephen D. Carter Sterilization apparatus and method
US5686045A (en) * 1994-02-09 1997-11-11 Carter; Stephen D. Method for the heat independent sterilization of microbially contaminated instruments
US5873385A (en) * 1997-07-21 1999-02-23 Emhart Inc. Check valve
US5921475A (en) * 1997-08-07 1999-07-13 Ford Motor Company Automotive fuel injector
GB2338513A (en) * 1998-06-20 1999-12-22 Lucas Ind Plc Fuel injector with variable force leaf spring
US6447718B1 (en) 1999-11-10 2002-09-10 Stephen Douglas Carter Apparatus and associated method for decontaminating contaminated matter with ultrasonic transient cavitation
AU2003269624A1 (en) * 2003-09-17 2005-04-06 1493707 Ontario Ltd. Cushioning and load bearing apparatus
DE102007032639B3 (en) * 2007-07-11 2009-01-22 Siemens Ag Valve
GB2549479A (en) * 2016-04-18 2017-10-25 Delphi Int Operations Luxembourg Sarl Fuel injector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341575A1 (en) * 1983-11-17 1985-05-30 Robert Bosch Gmbh, 7000 Stuttgart PRESSURE VALVE FOR FUEL INJECTION PUMPS
WO1996009474A1 (en) * 1994-09-21 1996-03-28 Caterpillar Inc. Fuel injector needle check valve biasing spring
GB2297357A (en) * 1994-09-21 1996-07-31 Caterpillar Inc Fuel injector needle check valve biasing spring
GB2297357B (en) * 1994-09-21 1998-06-24 Caterpillar Inc Fuel injector needle check valve biasing spring

Also Published As

Publication number Publication date
DE1954903C3 (en) 1974-02-28
JPS526409B1 (en) 1977-02-22
GB1274225A (en) 1972-05-17
DE1954903B2 (en) 1973-08-02
FR2023238A1 (en) 1970-08-07
US3627209A (en) 1971-12-14

Similar Documents

Publication Publication Date Title
DE1954903A1 (en) Fuel injector
DE2422736A1 (en) FUEL INJECTOR
EP0212188B1 (en) Fluid dispensat
DE855486C (en) Injection valve for internal combustion engines
DE2242030C3 (en) High-pressure dispensing gun, especially for applying a polishing paste
DE866574C (en) Hole nozzle for internal combustion engines with self-ignition
DE3117018A1 (en) FUEL INJECTION NOZZLE
WO1995024552A1 (en) Injection nozzle for internal combustion engines
DE3617015A1 (en) Fuel injection valve with soft seat
DE1247066B (en) Fuel injection valve for externally ignited internal combustion engines
DE3418293A1 (en) FUEL INJECTION NOZZLE
AT230679B (en) Fuel injection valve for internal combustion engines
DE3127776A1 (en) SPRAY GUN FOR HIGH VISCOSE MATERIALS
DE742338C (en) Valve for a liquid under gas pressure
CH516762A (en) Regulation and shut-off device for hose lines
DE2755251A1 (en) Fuel injector with spring loaded outlet valve - whose other end bears on axially adjustable support face in housing
AT221707B (en) Adjustable stopper for atomizer
DE504483C (en) Fluid-controlled fuel valve for airless fuel injection
DE8702152U1 (en) Spring-loaded safety valve
DE1147086B (en) Fuel injection needle valve
DE1139698B (en) Fuel injector
CH407896A (en) Hand atomizers, in particular for cosmetic purposes
DE7107844U (en) Overcurrent regulator
DE1943279A1 (en) Pressure peak meter
DE7114711U (en) Pressure relief valve

Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee