DE2909624A1 - Fuel injection system for IC engine - determines actual fuel quantity injected by measuring movement of fuel regulator - Google Patents

Fuel injection system for IC engine - determines actual fuel quantity injected by measuring movement of fuel regulator

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Publication number
DE2909624A1
DE2909624A1 DE19792909624 DE2909624A DE2909624A1 DE 2909624 A1 DE2909624 A1 DE 2909624A1 DE 19792909624 DE19792909624 DE 19792909624 DE 2909624 A DE2909624 A DE 2909624A DE 2909624 A1 DE2909624 A1 DE 2909624A1
Authority
DE
Germany
Prior art keywords
fuel
regulator
lever
control member
pump
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.)
Withdrawn
Application number
DE19792909624
Other languages
German (de)
Inventor
Franz Ing Grad Eheim
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19792909624 priority Critical patent/DE2909624A1/en
Priority to FR8005085A priority patent/FR2451466A1/en
Priority to GB8007596A priority patent/GB2047899B/en
Priority to JP2983480A priority patent/JPS55125329A/en
Publication of DE2909624A1 publication Critical patent/DE2909624A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/2208—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils
    • G01D5/2216—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils by a movable ferromagnetic element, e.g. a core
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
    • F02D1/12—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic
    • F02D1/122—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic control impulse depending only on engine speed
    • F02D1/127—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic control impulse depending only on engine speed using the pressure developed in a pump
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
    • F02M41/125—Variably-timed valves controlling fuel passages
    • F02M41/126—Variably-timed valves controlling fuel passages valves being mechanically or electrically adjustable sleeves slidably mounted on rotary piston
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • 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
    • F02M63/00—Other 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
    • F02M63/02—Fuel-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
    • F02M63/0205—Fuel-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
    • F02M63/022—Fuel-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 acting on fuel control mechanism

Abstract

The fuel injection system has the fuel regulating arm belonging to the speed controller coupled to the component that controls the amount of fuel injected. This arm is also connected directly to the moving part of the device that measures the current by which the fuel -quantity control component is open, i.e. that measures the quantity of fuel injected. This direct connection ensures that the measuring device measures only the actual quantity. Any movement of the control component (4) results in a proportional movement of the moving part (24) of the measuring device connected to the regulating arm (6). The moving part may be a short circuiting ring that moves relative to the core of an induction coil (22).

Description

R. 5 3 5 7R. 5 3 5 7

27-2.1979 Su/Kö27-2.1979 Su / Kö

ROBERT BOSCH GMBH3 7OOO-Stuttgart 1ROBERT BOSCH GMBH 3 7OOO-Stuttgart 1 Elektrischer Weggeber für KraftstoffeinspritzpumpenElectric travel sensor for fuel injection pumps Stand der TechnikState of the art

Die Erfindung geht aus von einer Kraftstoffeinspritzpumpe nach der Gattung des Hauptanspruchs. Bei bekannten-Kraftstoffeinspritzpumpen dieser Art mißt der Weggeber Bewegungen des Reglers, die nicht unbedingt der eingespritzten Kraftstoffmenge entsprechen. Abgesehen von dieser Fehlermöglichkeit ist die Anordnung der Weggeber bei den bekannten Pumpen entweder ungünstig bezüglich des Raumvolumens, oder sie sind für irgendwelche Reparaturen schlecht zugänglich.The invention is based on a fuel injection pump according to the genre of the main claim. In known fuel injection pumps In this way, the encoder measures movements of the controller that are not necessarily the injected ones Correspond to the amount of fuel. Apart from this The arrangement of the position transducers in the known pumps either unfavorable in terms of volume, or they are difficult to access for repairs of any kind.

©30039/005Ö© 30039 / 005Ö

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße elektrische Weggeber mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil^ daß die eingespritzte Kraftstoffmenge äußerst genau gemessen wird. Ein Fehler ist nicht möglich. Ein weiterer Vorteil ist, daß bei Justierungen des Reglerhebels, z.B. durch Verschieben seines Lagerpunktes, zwar das Fördermengenverstellglied in seiner Lage verschoben wird, nicht hingegen der bewegliche Geberteil. Ein nicht zu unterschätzender Vorteil besteht auch darin, daß der Geber dort angeordnet werden kann, wo er bezüglich der Bauform oder des elektrischen Anschlusses für die Einspritzpumpe günstig ist, wobei insbesondere auf Volumeneinsparungen Rücksicht genommen werden kann.The electrical displacement encoder according to the invention with the characteristic Features of the main claim has the advantage that the amount of fuel injected is extremely high is measured accurately. An error is not possible. Another advantage is that when adjusting the regulator lever, e.g. by moving its bearing point, although the delivery rate adjustment member is moved in its position is, however, not the movable encoder part. Another advantage that should not be underestimated is that the Encoder can be arranged where it is related to the design or the electrical connection for the injection pump is favorable, with particular consideration being given to volume savings.

Zeichnungdrawing

Zwei Ausführungsbeispiele der Erfindung, sind in der Zeichnung vereinfacht dargestellt und im folgenden näher beschrieben. Es zeigen Figur 1 einen Teillängsschnitt durch eine Kraftstoffeinspritzpumpe mit Regler sowie einem Kurzschlußringgeber als erstes Ausführungsbeispiel und Figur das zweite Ausführungsbeispiel als Differenzialdrosselgeber. . ■"Two embodiments of the invention are shown in the drawing shown in simplified form and described in more detail below. FIG. 1 shows a partial longitudinal section a fuel injection pump with regulator and a short-circuit ring transmitter as the first embodiment and figure the second embodiment as a differential throttle sensor. . ■ "

Beschreibung der ErfindungsbeispieleDescription of the examples of the invention

In dem in Figur 1 dargestellten Längsausschnitt einer Kraftstoffeinspritzpumpe wird ein Pumpenkolben 1 durchIn the longitudinal section of a fuel injection pump shown in Figure 1, a pump piston 1 is through

030039/00 5 0030039/00 5 0

nicht dargestellte Mittel in eine hin- und hergehende und gleichzeitig rotierende Bewegung versetzt. In diesem Pumpenkolben 1 ist ein Entlastungskanal 2 eines nicht dargestellten Pumpenarbeitsraumes angeordnet, der zu einem Saugraum 3 der Einspritzpumpe hin durch einen als Kraftstoffmengensteuerglied dienenden Ringschieber 1J aufgesteuert wird, sobald der Pumpenkolben 1 einen entsprechenden Förderhub zurückgelegt hat. Die während dieses Förderhubs und vor Aufsteuerung des Entlastungskanals 2 geförderte Menge gelangt zur Einspritzung. Umso weiter der Ringschieber k zum Pumpenarbeitsraum hin geschoben ist, desto größer ist die Einspritzmenge, je weiter unten er angeordnet ist, desto kleiner. Aus dem Saugraum 3 wird auch der Pumpenarbeitsraum durch nicht dargestellte Kanäle und Steuerungen mit Kraftstoff versorgt. Means not shown set in a reciprocating and simultaneously rotating movement. In this pump piston 1 there is a relief channel 2 of a pump working chamber, not shown, which is opened to a suction chamber 3 of the injection pump by an annular slide 1 J serving as a fuel quantity control element as soon as the pump piston 1 has covered a corresponding delivery stroke. The amount conveyed during this delivery stroke and before the relief channel 2 is activated is injected. The further the ring slide k is pushed towards the pump working chamber, the greater the injection quantity, the further down it is arranged, the smaller it is. The pump working chamber is also supplied with fuel from the suction chamber 3 through channels and controls (not shown).

Der Ringschieber 4 wird durch einen Drehzahlregler 5 verstellt, der über einen Regelhebel 6, welcher bei 7 gelagert ist, über einen Gelenkkopf 8 am Ringschieber l\ angreift. Am Reglerhebel 6 greift ein Stellkolben 9 des als hydraulischer Regler arbeitenden Drehzählreglers 5 an. Der Stellkolben 9 wird durch den im Saugraum 3 herrschenden hydraulischen Druck gegen die Kraft von nicht dargestellten Regelfedern betätigt, deren Kraft vorzugsweise willkürlich änderbar ist. Der Druck im Saugraum 3 ist in bekannter Weise drehzahlabhängig gesteuert, und zwar indem er mit zunehmender Drehzahl zunimmt und umgekehrt. Wird nun mit zunehmender Drehzahl aufgrund des steigenden Druckes im Saugraum 3 der Stellkolben 9nach oben geschoben, so wird gleichzeitig der Ringschieber *t nach unten geschoben, wodurch der Entlastungskanal 2 zuThe ring slide 4 is adjusted by a speed controller 5 which acts on the ring slide l \ via a control lever 6, which is mounted at 7, via a joint head 8. An adjusting piston 9 of the rotary counter controller 5, which operates as a hydraulic controller, engages the controller lever 6. The actuating piston 9 is actuated by the hydraulic pressure prevailing in the suction chamber 3 against the force of control springs (not shown), the force of which can preferably be changed arbitrarily. The pressure in the suction chamber 3 is controlled in a known manner as a function of the speed, namely by increasing with increasing speed and vice versa. If the adjusting piston 9 is now pushed upwards with increasing speed due to the increasing pressure in the suction chamber 3, the ring slide * t is pushed downwards at the same time, whereby the relief channel 2 closes

03OO39/OQ5O03OO39 / OQ5O

einem früheren Zeitpunkt während des Druckhubes aufgesteuert wird. Hierdurch wird die Einspritzmenge verringert, was eine Abnahme der Drehzahl zur Folge hat. Der Stellkolben 9 weist eine Verjüngung 10 auf, an der Begrenzungs-Stirnkanten zum größeren Durchmesser hin sich der Reglerhebel 6 abstützt. An der Ringstirnwand 11, die den Reglerhebel 6 in Richtung abnehmende Kraftstoffmenge mitnimmt, stützt sieh der Reglerhebel 6 unmittelbar mit einer Kröpfung 12 ab. An der anderen Begrenzungs-Stirnwand 13 stützt sich eine am Reglerhebel 6 befestigte Schleppfeder 14 ab. Hierdurch ist es möglich, den Reglerhebel 6 in eine Stellung für Null-Förderung, also völliges Aufsteuern des Entlastungskanals 2, zu schieben, ohne daß dieser Bewegung der Stellkolben 9 des Drehzahlreglers folgen muß. Es ist also eine Abstellung über den Reglerhebel 6 der Einspritzung möglich, ohne daß deshalb der Drehzahlregler 5 dieser Abstellung folgen muß, insbesondere auch der nicht dargestellte Verstellhebel mit dem in den Regler' zur Veränderung der Reglerkräfte eingegriffen wird..is opened at an earlier point in time during the pressure stroke. This reduces the injection quantity, which results in a decrease in speed. Of the Actuating piston 9 has a taper 10 on the limiting end edge the regulator lever 6 is supported towards the larger diameter. On the ring front wall 11, the takes the governor lever 6 with it in the direction of decreasing fuel quantity, the governor lever 6 also supports it directly a crank 12 from. On the other boundary end wall 13 is supported by a drag spring 14 attached to the regulator lever 6. This makes it possible to adjust the control lever 6 to a position for zero delivery, i.e. to completely open the relief channel 2, without this movement of the actuating piston 9 of the speed controller having to follow. So it's a shutdown about that Regulator lever 6 of the injection possible without the speed regulator 5 therefore having to follow this shutdown, in particular also the adjusting lever, not shown, with which engaged in the regulator 'to change the regulator forces will..

Um den Ringschieber- 4 in eine Stellung für Null-Förderung, also nach unten, verschieben zu können, greift an dem Reglerhebel 6 auf dessen dem Ringschieber 4 abgewandten Seite 15 der Anker 16 eines Stellmagneten 17 an. In der dargestellten Lage ist der Magnet 17 erregt, wobei der Anker 16 entgegen einer Rückstellfeder 18 in den Magneten hereingezogen ist. Während des Stillstandes des Motors ist der Anker 16 durch die Feder 18 herausgeschoben und der Reglerhebel 6 ist dabei entgegen der Kraft der Schleppfeder l4 nach oben geschoben, so daß der Ring-To move the ring slide 4 into a position for zero conveyance, that is, to be able to move downwards, engages the regulator lever 6 on its the ring slide 4 facing away from it Page 15 of the armature 16 of an actuating magnet 17. In the position shown, the magnet 17 is excited, the Armature 16 is drawn into the magnet against a return spring 18. While the engine is at a standstill the armature 16 is pushed out by the spring 18 and the regulator lever 6 is against the force of the Drag spring l4 pushed up so that the ring

110 039/00110 039/00

schieber 4 nach unten in eine Stellung für Null-Förderung geschoben ist. Sobald nun zum Starten der Maschine das Zündschloß betätigt wird,, wird der Magnet 17 erregt und der Anker 16 entgegen der Feder 18 eingezogen, wodurch der Reglerhebel 6 durch die Schleppfeder 14 betätigt, die in der Figur dargestellte Lage geschoben ist. Der Ringschieber 4 nimmt dadurch eine Stellung für Vollast, also für maximale Fördermenge während des Normalbetriebs ein. Sobald nun aus irgendeiner Sicherheitsschaltung heraus oder vom Zündschloß her der Magnet 17 ausgeschaltet wird, schiebt die Feder 18 den Anker 16 gegen den Reglerhebel 6, so daß der Reglerhebel 6 entgegen der Kraft der Schleppfeder 14 wieder in eine Stellung für Null-Fördermenge geschoben wird. Der Reglerhebel 6 ist gekröpft ausgebildet und ist in seinem Abschnitt 15 schräg zur Achse des Ankers 16 angeordnet, so daß trotz der Lage des Magneten quer zum Stellkolben 9 eine Verstellung ermöglicht wird. Der Magnet 17 ist in einem Deckel 19 des Pumpengehäuses 20 senkrecht zur Achse des Stellkolbens 9 angeordnet, so daß für die Auswirkung von Temperaturen und von den Abmaßen her eine äußerst günstige Bauweise erzielt ist.slide 4 down to a position for zero delivery is pushed. As soon as the ignition lock is actuated to start the machine, the magnet 17 is excited and the armature 16 is retracted against the spring 18, whereby the governor lever 6 is actuated by the drag spring 14, which is pushed position shown in the figure. The ring slide 4 thus takes a position for full load, that is for maximum flow rate during normal operation. As soon as now out of some safety circuit or the magnet 17 is switched off by the ignition lock, the spring 18 pushes the armature 16 against the regulator lever 6, so that the control lever 6 is pushed back against the force of the drag spring 14 into a position for zero delivery rate will. The regulator lever 6 is cranked and is arranged in its section 15 obliquely to the axis of the armature 16, so that despite the position of the magnet an adjustment is made possible transversely to the actuating piston 9. The magnet 17 is in a cover 19 of the pump housing 20 arranged perpendicular to the axis of the actuating piston 9, so that an extremely favorable construction is achieved for the effects of temperatures and the dimensions.

Wie in der Zeichnung dargestellt, bleibt auch nach ausreichend Raum für sonstige elektrische Geber;, wie sie bei derartigen Pumpen zunehmend erwünscht sind. So ist hier ein Geber 21 dargestellt, mit dem die Lage des Ringschiebers 4 zur Verwertung in einem elektronischen Steuergerät meßbar ist. Der Geber weist einen feststehenden Anker 22 mit Spule 23 auf, über den ein Kurzschlußring 24 geschoben wird, welcher fest mit dem Reglerhebel 6 verbunden ist. Da der Reglerhebel 6 unmittelbar den Ringschieber 4 anlenkt, entspricht jede Stellung des Kuraschlußrings 24 einer Stellung des Ringschiebers 4As shown in the drawing, it remains sufficient even after Space for other electrical transmitters, as they are increasingly desirable in such pumps. So is here a transmitter 21 is shown, with which the position of the Ring slide 4 for recovery in an electronic Control unit is measurable. The encoder has a stationary armature 22 with a coil 23, over which a short-circuit ring 24 is pushed, which is fixed to the regulator lever 6 is connected. Since the regulator lever 6 directly links the ring slide 4, each position corresponds to the Kuraschlußring 24 a position of the ring slide 4

030039/0050030039/0050

53 553 5

und damit einer tatsächlichen Einspritzmenge. Die Meßgröße wird über einen Stecker 25 zu dem nicht dargestellten Steuergerät weitergegeben.and thus an actual injection quantity. The measurand is passed on via a plug 25 to the control unit (not shown).

Zur Einstellung der Einspritzmengenregelung ist die Lagerstelle 7 des Reglerhebels 6 verstellbarj und zwar über ein Blech 26, an dem die Lagerstelle 7 angeordnet ist und welches durch eine strichpunktiert dargestellte Schraube 27 verschiebbar ist. Bei dieser Verschiebung wird zwar der Ringschieber 4 verstellt, nicht jedoch der Ring 24 des Weggebers.The bearing point is used to set the injection quantity control 7 of the regulator lever 6 adjustable over a plate 26 on which the bearing 7 is arranged and which is displaceable by a screw 27 shown in phantom. With this shift, it is true the ring slide 4 is adjusted, but not the ring 24 of the path transducer.

Bei dem in Figur 2 dargestellten Ausführungsbeispiel dient als Geber ein Differenzialdorsselgeber 30. Der Reglerhebel 6 ist bei diesem Beispiel an seinem Ende geteilt, wobei der Abschnitt 15' weiterhin für den Angriff des Magneten 17 dient, hingegen ein Abschnitt 31 des Verstellhebels 6 am Weggeber 30 angreift. Der Weggeber 30 weist hierfür einen Ferritkern 32 auf, der entgegen der Kraft einer ganz schwachen und den Regler nicht beeinflussenden Rückstellfeder 33 innerhalb von zwei Induktionsspulen 34 verschiebbar ist. Über einen Stecker 25' wird die Meßgröße dann zu dem nicht dargestellten elektronischen Steuergerät weitergegeben.In the embodiment shown in FIG a differential dorssel encoder 30 serves as the encoder. In this example, the governor lever 6 is at its end divided, whereby the section 15 'continues to serve for the attack of the magnet 17, whereas a section 31 of the adjusting lever 6 engages the displacement transducer 30. For this purpose, the displacement encoder 30 has a ferrite core 32 that opposes the the force of a very weak return spring 33, which does not affect the controller, within two induction coils 34 is slidable. Via a plug 25 ', the measured variable is then passed on to the electronic control unit (not shown).

In gleicher Weise, wie in Figur 2 dargestellt, kann statt des oben beschriebenen Differenzialdrosselgebers ein sogenannter Näherungsgeber Verwendung finden.In the same way, as shown in Figure 2, instead of the above differential throttle sensor described find a so-called proximity sensor use.

030039/0050030039/0050

Claims (4)

R. 5 3 5 7R. 5 3 5 7 27.2.1979 Su/KöFebruary 27, 1979 Su / Kö ROBERT BOSCH GMBH5 7OOO Stuttgart 1ROBERT BOSCH GMBH 5 7OOO Stuttgart 1 AnsprücheExpectations Λ Elektrischer Weggeber für Kraftstoffeinspritzpumpen mit einem Drehzahlregler und einem unmittelbar mit einem Einspritzmengensteuerglied gekoppelten Reglerhebel, dadurch gekennzeichnet, daß der bewegliche Geberteil (2*1, 32) unmittelbar mit dem Reglerhebel (6) zusammenwirkt, so daß eine Verstellung des Steuergliedes (4) eine proportionale Geberteilverstellung bewirkt. Λ Electric travel sensor for fuel injection pumps with a speed regulator and a regulator lever directly coupled to an injection quantity control member, characterized in that the movable transmitter part (2 * 1, 32) interacts directly with the regulator lever (6) so that an adjustment of the control member (4) a causes proportional adjustment of the encoder part. 2. Elektrischer Weggeber nach Anspruch I^ dadurch gekennzeichnet, daß die Wegmessung über die Veränderung einer Induktionsspannung erfolgt.2. Electrical displacement transducer according to claim I ^ characterized in that the displacement measurement on the change of a Induction voltage takes place. 3. Elektrischer Weggeber nach Anspruch 2, dadurch gekennzeichnet, daß als beweglicher Geberteil ein Kurzsehlußring (24) dient, der gegenüber einem Spulenkern'(22) verschiebbar ist.3. Electrical displacement transducer according to claim 2, characterized in that a short-end ring is used as the movable transducer part (24) is used, which is displaceable with respect to a coil core (22). 4. Elektrischer Weggeber nach Anspruch 2, dadurch gekenn-4. Electrical position transmitter according to claim 2, characterized — 2 «·- 2 «· 030039/00 50030039/00 50 .2_ 5 3 5.2_ 5 3 5 zeichnet, daß als beweglicher Geberteil ein Eisenkern (32) in zwei Spulen (3^) als Differenzialdrossel verschiebbar ist.draws that an iron core is used as the movable encoder part (32) can be moved in two coils (3 ^) as a differential throttle is. 5' Elektrischer Weggeber nach einem: der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Pumpe als Verteilerpumpe mit einem hin- und hergehenden Pumpenkolben (1) und einem um in angeordneten Ringschieber .(4) als Einspritzmengensteuerglied ausgebildet ist, und daß der Drehzahlregler (5) am Reglerhebel (6) angreift^ welcher zwischen Steuerglied (4) und Drehzahlreglerängriffspunkt im Sinne eines Kipphebels gelagert ist. 5 ' Electrical displacement transducer according to one of the preceding claims, characterized in that the pump is designed as a distributor pump with a reciprocating pump piston (1) and an annular slide valve (4) arranged around it as an injection quantity control element, and that the speed controller (5 ) acts on the governor lever (6) ^ which is mounted between the control member (4) and the speed governor engagement point in the sense of a rocker arm. 030 03 9/00 50030 03 9/00 50
DE19792909624 1979-03-10 1979-03-12 Fuel injection system for IC engine - determines actual fuel quantity injected by measuring movement of fuel regulator Withdrawn DE2909624A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19792909624 DE2909624A1 (en) 1979-03-12 1979-03-12 Fuel injection system for IC engine - determines actual fuel quantity injected by measuring movement of fuel regulator
FR8005085A FR2451466A1 (en) 1979-03-10 1980-03-06 RUNNING ELECTRIC TRANSMITTER FOR FUEL INJECTION PUMPS
GB8007596A GB2047899B (en) 1979-03-10 1980-03-06 Electrical position sensor for a fuel injection pump
JP2983480A JPS55125329A (en) 1979-03-12 1980-03-11 Electric distance signal generator for fuel injection pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792909624 DE2909624A1 (en) 1979-03-12 1979-03-12 Fuel injection system for IC engine - determines actual fuel quantity injected by measuring movement of fuel regulator

Publications (1)

Publication Number Publication Date
DE2909624A1 true DE2909624A1 (en) 1980-09-25

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Application Number Title Priority Date Filing Date
DE19792909624 Withdrawn DE2909624A1 (en) 1979-03-10 1979-03-12 Fuel injection system for IC engine - determines actual fuel quantity injected by measuring movement of fuel regulator

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JP (1) JPS55125329A (en)
DE (1) DE2909624A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050193A1 (en) * 1980-10-21 1982-04-28 Robert Bosch Gmbh Fuel injection pump for internal-combustion engines
DE3225085A1 (en) * 1982-07-05 1984-01-12 Daimler-Benz Ag, 7000 Stuttgart METHOD FOR CONTROLLING THE FUEL MEASUREMENT FOR AN INTERNAL COMBUSTION ENGINE
FR2544484A1 (en) * 1983-04-15 1984-10-19 Bosch Gmbh Robert DISPLACEMENT INDICATOR FOR DETECTING AN ADJUSTING MEMBER, IN PARTICULAR A FUEL INJECTION PUMP ADJUSTING MEMBER
FR2731468A1 (en) * 1995-03-08 1996-09-13 Renault Throttle position detector for fuel injection motor vehicle IC-engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050193A1 (en) * 1980-10-21 1982-04-28 Robert Bosch Gmbh Fuel injection pump for internal-combustion engines
DE3225085A1 (en) * 1982-07-05 1984-01-12 Daimler-Benz Ag, 7000 Stuttgart METHOD FOR CONTROLLING THE FUEL MEASUREMENT FOR AN INTERNAL COMBUSTION ENGINE
FR2544484A1 (en) * 1983-04-15 1984-10-19 Bosch Gmbh Robert DISPLACEMENT INDICATOR FOR DETECTING AN ADJUSTING MEMBER, IN PARTICULAR A FUEL INJECTION PUMP ADJUSTING MEMBER
FR2731468A1 (en) * 1995-03-08 1996-09-13 Renault Throttle position detector for fuel injection motor vehicle IC-engine

Also Published As

Publication number Publication date
JPS55125329A (en) 1980-09-27

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