DE902333C - Automatic shut-off device for injection fuel pumps of internal combustion engines, especially diesel engines - Google Patents

Automatic shut-off device for injection fuel pumps of internal combustion engines, especially diesel engines

Info

Publication number
DE902333C
DE902333C DEM870D DEM0000870D DE902333C DE 902333 C DE902333 C DE 902333C DE M870 D DEM870 D DE M870D DE M0000870 D DEM0000870 D DE M0000870D DE 902333 C DE902333 C DE 902333C
Authority
DE
Germany
Prior art keywords
suction
pumps
valves
shaft
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
DEM870D
Other languages
German (de)
Inventor
Dipl-Ing Franz Froehlich
Anton Ramm
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg 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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Priority to DEM870D priority Critical patent/DE902333C/en
Application granted granted Critical
Publication of DE902333C publication Critical patent/DE902333C/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
    • F02M63/00Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0205Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • F02M63/0215Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by draining or closing fuel conduits

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 eine seilbsttätige Abstellvorrichtung für Einspri,tzbrennsto@ffpumpen von Brennkraftmaschinen, insbesondere Diieselmotiorem, bei der von. einem Grenzdrehzahlregler ein. Gestänge betätigt wird, das die Saugventile der Einspritzpumpen in der Saugstellung festhält, so daß eine weitere Brennstofförderung zu den Eiinspritzventilen unüerbunden. ist. Gemäß dem Patent 76o 535 wird bei einer derartigen Vorrichtung die Verstellkraft innerhalb des vom Drehzahlregler zu den Saugventillen führenden Gesiünges so. lange gespeichert, bis. bei den einzelnen Pumpen: im Saughub das Saugventil geöffnet wird., um dann, in dieser Stellung gehalten zu. werden. Das Gestänge beste-hü aus. einer elastischen., verdrehungsfähigen Welle und an dieser befestigten, st;2:rreni Hebeln, die auf die Saugventile der Brennstoffpumpen einwirken-und, sie! in, der Offen:s.tellung halten.The invention relates to an automatic cable shut-off device for injection fuel pumps of internal combustion engines, especially Diieselmotiorem, in the case of. a speed limit controller a. Linkage is operated, which the suction valves of the injection pumps in the suction position holds, so that further fuel delivery to the injector valves is unbound. is. According to the patent 76o 535 in such a device, the adjusting force within the Gesiünges leading from the speed controller to the suction valves so. Long saved until. for the individual pumps: the suction valve is opened during the suction stroke., to then be held in this position. will. The linkage is good. one elastic., twistable shaft and attached to this, st; 2: rreni levers, which act on the suction valves of the fuel pumps - and, they! in, the open: see position keep.

Liegen nun bei einer derartigen Abs:tellvorrithtung die Hebel der Verdrehungswelle im Ruhezustand der letzteren: auf den Spindeln der Saugventile auf, dann isst der Verdrehungswinkel für die Welle und: damit die Offnungskraft für die Einda.ßventile nicht beliebig wählbar, sondern sein größter, voll wirksamer Wert hängt ab vom Ventilhub der ersten Brennstoffpumpe, d. h. der Pumpe, dile dem Angriiff der Verdrehungskraft an der Welle, am nächsten Biegt. Der Weg, den das. ernste Einlaßven.til zurücklegt, ist bestimmend; für die wirksame Verdrehung der Welle, die für, die Betätigung der folgenden Pumpenventile notwendig isst. Bell kleinem Öffnungsweg des. Einlaßv entil-si -und größerer Anzahl der Pumpenzyliiin;der kann es, däher vorkommen, daß die, aus der Wellenverdrehung auf die!. Einlaßventiie der hinteren. Pumpen, ausgeübte Kraft zu klein ist, um diese gegen den Druck des Brennstoffes beim Förderhub des Pumpenkolbens offen zu halten.Are the levers of the Torsional shaft at rest of the latter: on the spindles of the suction valves on, then eats the angle of rotation for the shaft and: with it the opening force for the inlet valves not arbitrarily selectable, but its largest, fully effective The value depends on the valve lift of the first fuel pump, i.e. H. the pump, dile that Attack of the torsional force on the shaft, the next to bend. The way that. covers serious inlet valve is decisive; for the effective rotation of the Shaft eating necessary for actuating the following pump valves. Bell small opening of the inlet valve and larger number of pump cylinders it can, therefore, happen that the, from the shaft rotation to the !. Inlet valve the rear. Pumps, the force exerted is too small to resist the pressure of the To keep fuel open during the delivery stroke of the pump piston.

Um auch für diese Fälle ein sicheres Offenhalten aller Einlaßventiile und: damiit die Abstellung der Brennkrafümaschine zu gewährleisten, ist erfindungsgemäß zwischen den an der elastischen Verdrehungswelle angeordneten starren Hebeln und den von ihnen beeinflußten Saugventiilspindieln ein bei den einzelnen Pumpen verschieden großes@ Spiel vorgesehen, derart, daß bei allen, Ventilen angenähert eine gleich große Öffnungskraft zur Wirkung kommt. Das Spiel zwischen dem Betätigungshebel an der Verdrehungswelle und der Ventilspindel bei der der Einspannstelle der Verdrehungswelle am nächsten gelegenen Pumpe: iis,t am kleinsten z. B. gleich Null und wird !bei den folgenden Pumpen, fortschreitend größer.To ensure that all inlet valves are kept open safely even in these cases and: to ensure the shutdown of the internal combustion engine is according to the invention between the rigid levers and arranged on the elastic torsion shaft the suction valve spindles influenced by them differ in the individual pumps large @ game provided in such a way that at all, valves approximately one the same great opening force comes into play. The play between the operating lever the twisting shaft and the valve spindle at the clamping point of the twisting shaft closest pump: iis, t smallest z. B. equals zero and becomes! At the following pumps, progressively larger.

In der Zeichnung ist ein Ausführungsbeispiel einer Abstellvorriichüung nach. der Erfindung in schematischer Weise dargestellt. Das. Gestänge besteht aus: einem vom nicht dargestellten Grenzdrehzahlregler bzw. einem Servoniotor bewegten Hebel i, der eine elastische Welle :2 verdreht. An dieser Welle sind die Hebel 4, 5, 6, 7 befe,sitdgt, die zu den Saugventilen. 8, 9, 1o und ii der Brennstoffpumpen iä, 13, 14. Und 15 gehören. Der Kolben 16 der Beennsitoffpumpe 12 saugt beim Abwärtsgang Brennstoff aus der Leistung 17 über das selbsttätige Saugventil 8 an und drückt ihn: über das Druckventil i9 zum Arbeitszylinder der Brenn-kraftmaschine. Die Saugventile 8, 9, io, i i welisen je eine Ventilspindel 2o auf, gegen deren Ende sich die Hebel 4, 5, 6 und 7 legen., wenn ditei Welle 2 an der Angri.ffs,stelle des Hebels i um dein Winkel g verdreht wird. Zwischen den Hebeln. 4, 5, 6 und 7 und den Ventilspindeln 20 der Saugventiile 8, 9, io, i i ist ein Spiel in, ra, o, p vorgesehen, das bei der dem Hebel i am nächsten gelegenen Pumpe 12 am größten ist und bei! der entferntesten Pumpe i i gleich Null ist. Wird jetzt die Welle 2 an der Angriffsstelle des Heb-elis, i um den Winkel g verdreht!, so legen sich die Hebel 4, 5, 6 und 7 mit annähernd gleicher Kraft gegen die Spindeln 2o der Saugv entile &, 9, i o, i i äni. Sobald eines: der Saugven,tilie 8, 9, 1o, i i sich beim Saughub einer Pumpe öffnet, folgt der betreffende Hebel der Ventilspindel und hält das Ventil in, der Saugstellung offen, so daß beim nachfolgenden: Druckhub des: Pumpenkolbens der Brennstoff in. die. Saugleitung zurückgedrückt wird und! keim Brennstoff über das Druckventil zu den Einspritzdüsen, gelangt.- Es werden damit die einzelnen Pumpen nacheinander in der Reihenfolge, ihrer Einspritzung abgestellt, so daß diie Maschiine schließlich s,tehenbleiibt.In the drawing, an embodiment of a storage device is shown. of the invention shown in a schematic manner. That. Linkage consists of: a lever i, which is moved by the speed limit controller (not shown) or a servo motor and which rotates an elastic shaft: 2. The levers 4, 5, 6, 7 are attached to this shaft, which are attached to the suction valves. 8, 9, 1o and ii of the fuel pumps iä, 13, 14. and 15 belong. The piston 16 of the fuel pump 12 sucks in fuel from the power 17 during the downward gear via the automatic suction valve 8 and pushes it: via the pressure valve i9 to the working cylinder of the internal combustion engine. The suction valves 8, 9, io, ii each have a valve spindle 2o, against the end of which the levers 4, 5, 6 and 7 are placed. When the shaft 2 is at the attack, set the lever i by your angle g is twisted. Between the levers. 4, 5, 6 and 7 and the valve spindles 20 of the suction valves 8, 9, io, ii, there is a clearance in, ra, o, p which is greatest with the pump 12 closest to the lever i and with! the most distant pump ii is zero. If the shaft 2 is now rotated by the angle g at the point of application of the lever, i, the levers 4, 5, 6 and 7 are positioned with approximately the same force against the spindles 2o of the suction valves &, 9, io, ii äni. As soon as one: the suction valve 8, 9, 1o, ii opens during the suction stroke of a pump, the lever in question follows the valve spindle and holds the valve in the suction position, so that during the following: pressure stroke of the: pump piston the fuel is in. the. Suction line is pushed back and! no fuel reaches the injection nozzles via the pressure valve. The individual pumps are thus switched off one after the other in the order in which they were injected, so that the machine finally stops.

Claims (2)

PATENTANSPRÜCHE: i. Selbsttätige Abs,tellvorrichtung für Eiirr,-spritzbrennstoffpumpen von Brennkraftmaschinen, insbesondere Dieselmotoren, bei der von einem Grenzdrehzahlregler die Saugventile der Einspritzpumpen in. der Saugstellung festgehalten werden mittels eines vom Drehzahlregler zu den Saugventilen führenden Gestänges, bestehend aus einer elastischen, verdrehungsfähigen Welle und an dieser befestigten starren Hebeln, die auf die Saugventile einwirken gemäß dem Patent 760 535, dadurch gekennzeichnet, daß zwischen. den: an der elastiischen, verdrehungsfähigen Welle (2) angeordneten starren Hebeln. (4, 5, 6, 7) und, de von ihnen beeinfiußüeni Saugventilspindeln (2o) ein bei den einzelnen Pumpen; (12, 13, 14, 15) ve@rschieden großes Spiel (an, ya, o, p) vorgesehen ist, derart, daß bei allen Ventilen angenähert eine gleich große Öffnungskraft zur Wirkung kommt. PATENT CLAIMS: i. Automatic shut-off device for eir, injection fuel pumps of internal combustion engines, in particular diesel engines, in which the suction valves of the injection pumps are held in the suction position by a limit speed controller by means of a linkage leading from the speed controller to the suction valves, consisting of an elastic, twistable shaft and on this fixed rigid levers acting on the suction valves according to patent 760 535, characterized in that between. the: on the elastic, twistable shaft (2) arranged rigid levers. (4, 5, 6, 7) and the suction valve spindles (2o) that they influence on the individual pumps; (12, 13, 14, 15) different sizes of play (an, ya, o, p) are provided in such a way that approximately the same opening force is effective for all valves. 2. Selbsttätige Abstellvorrichtung nach Anspruch i, dadurch gekennzeichnet, daß das Spiel zwischen den Abstellhebeln (4, 5, 6, 7) und den Saugventilspindeln (2o) bei der der Einspannstellei der Verdrehungswelle (2) am nächsten, gelegenen. Pumpe (15) am kleinsten, z. B. gleich Null, ist und bei den anderen Pumpen in Richtung auf die Angriffsstelle der Verd:rehungskraft an der Verdrehungswelle (2) fortschreitend größer wird.2. Automatic parking device according to claim i, characterized in that the play between the shut-off levers (4, 5, 6, 7) and the suction valve spindles (2o) at the clamping point of the torsion shaft (2) closest, located. Pump (15) the smallest, e.g. B. equal to zero, is and with the other pumps in the direction of the point of application of the twisting force on the torsion shaft (2) becomes progressively larger.
DEM870D 1943-02-12 1943-02-12 Automatic shut-off device for injection fuel pumps of internal combustion engines, especially diesel engines Expired DE902333C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM870D DE902333C (en) 1943-02-12 1943-02-12 Automatic shut-off device for injection fuel pumps of internal combustion engines, especially diesel engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM870D DE902333C (en) 1943-02-12 1943-02-12 Automatic shut-off device for injection fuel pumps of internal combustion engines, especially diesel engines

Publications (1)

Publication Number Publication Date
DE902333C true DE902333C (en) 1954-01-21

Family

ID=7290899

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM870D Expired DE902333C (en) 1943-02-12 1943-02-12 Automatic shut-off device for injection fuel pumps of internal combustion engines, especially diesel engines

Country Status (1)

Country Link
DE (1) DE902333C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1081273B (en) * 1954-10-15 1960-05-05 Paxman & Co Ltd Davey Automatic shut-off device for internal combustion engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1081273B (en) * 1954-10-15 1960-05-05 Paxman & Co Ltd Davey Automatic shut-off device for internal combustion engines

Similar Documents

Publication Publication Date Title
DE3306319C2 (en) Procedure for operating a multi-cylinder Otto internal combustion engine
DE688030C (en) Multi-cylinder fuel pump, especially for internal combustion engines
DE3874101T2 (en) INLET DEVICE FOR MULTI-CYLINDER INTERNAL COMBUSTION ENGINES.
DE902333C (en) Automatic shut-off device for injection fuel pumps of internal combustion engines, especially diesel engines
DE3909822C2 (en)
DE2550722B2 (en) VALVE CONTROLLED PISTON INTERNAL ENGINE
DE2402374A1 (en) SPEED REGULATOR FOR FUEL INJECTION PUMPS
DE3520215C2 (en)
DE2155420C3 (en) Device for limiting the maximum amount of fuel for injection internal combustion engines
DE4010940A1 (en) Switch=off method for IC engine - closing throttle valve but delaying closure for fuel valve
DE815583C (en) Device on internal combustion engines for canceling and automatically reactivating compression when starting by hand
DE592887C (en) Fuel pump for injection internal combustion engines
DE760535C (en) Automatic shut-off device for injection fuel pumps of internal combustion engines, especially diesel engines
DE587855C (en) Method and device for canceling or reducing the torsional vibrations of the crankshaft when stopping internal combustion engines
DE617738C (en) Fuel injection system for internal combustion engines
DE683236C (en) Fuel delivery device for internal combustion engines
DE662726C (en) Control device for fuel pumps in vehicle internal combustion engines
DE230151C (en)
DE1250677B (en) Hydraulic control device for internal combustion engine valves, in particular for the blow-in valves of a gas engine
DE132420C (en)
DE855638C (en) Device for charged internal combustion engines
AT143192B (en) Injection pump with regulator and pre-feed pump.
DE234354C (en)
DE254095C (en)
DE379160C (en) Two-stroke internal combustion engine used to drive locomotives