EP0438651B1 - Mechanical speed regulator for a fuel injection pump of compression ignition internal combustion engines - Google Patents
Mechanical speed regulator for a fuel injection pump of compression ignition internal combustion engines Download PDFInfo
- Publication number
- EP0438651B1 EP0438651B1 EP90121692A EP90121692A EP0438651B1 EP 0438651 B1 EP0438651 B1 EP 0438651B1 EP 90121692 A EP90121692 A EP 90121692A EP 90121692 A EP90121692 A EP 90121692A EP 0438651 B1 EP0438651 B1 EP 0438651B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stop
- speed
- full
- injection pump
- fuel injection
- 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 - Lifetime
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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
- 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
- F02M59/447—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 means specially adapted to limit fuel delivery or to supply excess of fuel temporarily, e.g. for starting of the engine
-
- 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
- F02D1/10—Transmission of control impulse to pump control, e.g. with power drive or power assistance mechanical
Definitions
- the invention relates to a mechanical speed controller for a fuel injection pump of air-compressing self-igniting internal combustion engines according to the features specified in the preamble of claim 1.
- a swivel plate with a full load stop can be transferred from a position corresponding to the start position to a position corresponding to the full load position in order to limit the adjustment path of the quantity control element.
- the adjustment device has the task of shifting the quantity control element at high speeds in the direction of shortage (see the publication "Bosch Technical Instruction, Speed Regulator for Series Injection Pumps", 1st Edition Sept. 30, 1975, pages 38 and 19).
- a speed controller version of this type allows the delivery characteristic of the injection pump to be adapted to the fuel demand characteristic of the internal combustion engine in the upper speed range.
- the invention has for its object to realize a negative adjustment in the speed range below the positive adjustment in addition to the positive adjustment by low-cost measures in the generic speed controller, so that an improved adaptation of the delivery rate in the entire load range to the fuel requirements of the internal combustion engine is made possible, especially with the goal of more favorable smoking behavior.
- a speed controller for internal combustion engines in which the joint fork of the quantity control member has a counterstop for the full load stop of the tab, which is part of an adjustment device, but it is a constructional design with a spring-loaded slider that in their positive Adjustment effect corresponds to that in the flyweights of the flyweight device described above.
- a speed controller is known from DE 26 56 261 C2, in which a full-load stop slides along a stop track carried by the counter-stop for the negative adjustment, but in which the counter-stop is firmly screwed to the controller housing.
- a full-load quantity setting device 4 is fastened to the front housing part 3 of the speed controller 1, to the setting slide 5 of which a link 6 projecting into the speed controller 1 is articulated with a full-load stop 7.
- the tab 6 is operatively connected to a counter stop 8, which is designed as an adjustable bolt, which is fastened longitudinally displaceably transversely to the direction of movement thereof in an articulated fork 12 connecting a control lever 10 with a quantity control member 11.
- the bolt section 8a protruding from the joint fork 12 is conical, the cone part with the larger diameter facing the tab 6.
- the bolt section 8a essentially represents a stop track on which the full-load stop 7 (FIG. 2) lying at right angles to the sectional plane of the speed controller 1 (FIG. 2) slides along in the lower speed range in the sense of a negative adjustment.
- the adjustment is triggered by the flyweight device 13 of the speed controller 1, which swivels the plate 6 as a function of the speed via a spring-loaded rocker arm 14.
- the flyweight device 13 is already equipped with an adjustment device in the flyweights (not shown), through which a positive adjustment takes place in the upper speed range between n3 and n4.
- the adjustment path of the negative adjustment - as can be seen from Fig. 3 - extends from n1 to n2, which means that the tab 6 abuts the lower end of the conical bolt section 8a; the position corresponds to the start of adjustment at n 1. With increasing speed, the tab 6 is pivoted counterclockwise until the upper end of the conical bolt section 8a is reached, which corresponds to the matching end at n2 and at the same time an increase in the delivery rate.
- the stop track does not have to be flat, but can, depending on the delivery rate of the internal combustion engine, run accordingly, e.g. B. arcuate.
- the tab 6 assumes the position marked with broken lines when the internal combustion engine is at a standstill, so that when starting, the quantity control element 11 designed as a control rod can assume a starting position that goes beyond the full-load quantity position. After the start, the full load quantity is limited by the interaction of the full load stop 7 and counter stop 8.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Description
Die Erfindung betrifft einen mechanischen Drehzahlregler für eine Kraftstoffeinspritzpumpe von luftverdichtenden selbstzündenden Brennkraftmaschinen nach den im Oberbegriff des Patentanspruchs 1 angegebenen Merkmalen.The invention relates to a mechanical speed controller for a fuel injection pump of air-compressing self-igniting internal combustion engines according to the features specified in the preamble of
Bei Drehzahlreglern (sogenannte RQ-Regler) ist es üblich, den Weg des Mengensteuergliedes der Kraftstoffeinspritzpumpe bei Vollastmenge oder bei Startmenge durch Anschläge zu begrenzen und darüber hinaus Fliehgewichtseinrichtungen mit einer die positive Angleichung (Verringerung der Kraftstoffmenge bei steigender Drehzahl im oberen Drehzahlbereich) bewirkenden Angleichvorrichtung zu versehen.In the case of speed regulators (so-called RQ regulators), it is common to limit the path of the quantity control element of the fuel injection pump at full load or at the start quantity by means of stops and, in addition, to flyweight devices with a balancing device which brings about positive adjustment (reduction in fuel quantity with increasing speed in the upper speed range) Mistake.
Im Drehzahlregler ist eine schwenkbar ausgeführte Lasche mit Vollastanschlag von einer der Startstellung entsprechenden Stellung in eine der Vollaststellung entsprechenden Stellung drehzahlabhängig überführbar, um den Verstellweg des Mengensteuergliedes zu begrenzen. Die Angleichvorrichtung hat hierbei die Aufgabe, das Mengensteuerglied bei hohen Drehzahlen in Richtung Mindermenge zu verschieben (s. hierzu die Druckschrift "Bosch Technische Unterrichtung, Drehzahlregler für Reiheneinspritzpumpen", 1. Ausgabe 30. Sept. 1975, Seite 38 und 19).In the speed controller, a swivel plate with a full load stop can be transferred from a position corresponding to the start position to a position corresponding to the full load position in order to limit the adjustment path of the quantity control element. The adjustment device has the task of shifting the quantity control element at high speeds in the direction of shortage (see the publication "Bosch Technical Instruction, Speed Regulator for Series Injection Pumps", 1st Edition Sept. 30, 1975, pages 38 and 19).
Eine Drehzahlreglerausführung dieser Art erlaubt eine Anpassung der Förderkennlinie der Einspritzpumpe an die Kraftstoffbedarfskennlinie der Brennkraftmaschine im oberen Drehzahlbereich.A speed controller version of this type allows the delivery characteristic of the injection pump to be adapted to the fuel demand characteristic of the internal combustion engine in the upper speed range.
Der Erfindung liegt die Aufgabe zugrunde, beim gattungsgemäßen Drehzahlregler zusätzlich zur positiven Angleichung durch bauaufwandarme Maßnahmen auch eine negative Angleichung im Drehzahlbereich unterhalb der positiven Angleichung zu realisieren, so daß eine verbesserte Anpassung der Fördermenge im gesamten Lastbereich an den Kraftstoffbedarf der Brennkraftmaschine ermöglicht ist, insbesondere mit dem Ziel eines günstigeren Rauchverhaltens.The invention has for its object to realize a negative adjustment in the speed range below the positive adjustment in addition to the positive adjustment by low-cost measures in the generic speed controller, so that an improved adaptation of the delivery rate in the entire load range to the fuel requirements of the internal combustion engine is made possible, especially with the goal of more favorable smoking behavior.
Die Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöst.The object is achieved by the features specified in the characterizing part of
Durch die erfindungsgemäße Ausführung, den an der Gelenkgabel befestigten Gegenanschlag lediglich mit einer besonderen, die Startmengenentriegelung bzw. -freigabe nicht beeinträchtigenden Anschlagbahn zu versehen, an der der Vollastanschlag der schwenkbaren Lasche drehzahlgesteuert entlanggleitet, ist auf einfache Weise eine im unteren Drehzahlbereich negative Angleichung verwirklicht, die unabhängig von der im oberen Drehzahlbereich wirkende positive Angleichung arbeitet und das Rauchverhalten der Brennkraftmaschine wesentlich verbessert.Due to the design according to the invention of merely providing the counterstop attached to the joint fork with a special stop track which does not impair the release or release of the starting quantity and along which the full-load stop of the pivotable bracket slides in a speed-controlled manner, a negative adjustment in the lower speed range is easily achieved. that works independently of the positive adjustment acting in the upper speed range and significantly improves the smoking behavior of the internal combustion engine.
Aus der DE-0S 28 38 919 ist ein Drehzahlregler für Brennkraftmaschinen bekannt, bei dem die Gelenkgabel des Mengensteuergliedes einen Gegenanschlag für den Vollastanschlag der Lasche aufweist, der zwar Teil einer Angleichvorrichtung ist, jedoch handelt es sich hier um eine bauaufwendige Ausführung mit einem federbelasteten Gleitstück, die in ihrer positiven Angleichwirkung derjenigen in den Fliehgewichten der eingangs beschriebenen Fliehgewichtseinrichtung entspricht.From DE-0S 28 38 919 a speed controller for internal combustion engines is known, in which the joint fork of the quantity control member has a counterstop for the full load stop of the tab, which is part of an adjustment device, but it is a constructional design with a spring-loaded slider that in their positive Adjustment effect corresponds to that in the flyweights of the flyweight device described above.
Ferner ist aus der DE 26 56 261 C2 ein Drehzahlregler bekannt, bei dem zwar ein Vollastanschlag an einer vom Gegenanschlag getragenen Anschlagbahn für die negative Angleichung entlanggleitet, bei dem aber der Gegenanschlag am Reglergehäuse fest verschraubt angeordnet ist.Furthermore, a speed controller is known from DE 26 56 261 C2, in which a full-load stop slides along a stop track carried by the counter-stop for the negative adjustment, but in which the counter-stop is firmly screwed to the controller housing.
Im Unteranspruch ist eine förderliche Weiterbildung der Erfindung beansprucht.In the dependent claim, a further development of the invention is claimed.
Der Gegenstand der Erfindung ist anhand eines in der Zeichnung veranschaulichten Ausführungsbeispieles näher beschrieben. Es zeigen
- Fig. 1
- einen Schnitt durch einen nur teilweise dargestellten mechanischen Drehzahlregler
- Fig. 2
- eine Seitenansicht der Lasche mit Vollastanschlag und
- Fig. 3
- ein Regelweg-Drehzahl-Funktionsdiagramm.
- Fig. 1
- a section through a mechanical speed controller shown only partially
- Fig. 2
- a side view of the tab with full load and
- Fig. 3
- a control path speed function diagram.
In Fig. 1 ist ein mechanischer Drehzahlregler 1 als Anbauteil an einer für luftverdichtende selbstzündende Brennkraftmaschinen vorgesehenen Kraftstoffeinspritzpumpe 2 gezeigt. Am stirnseitigen Gehäuseteil 3 des Drehzahlreglers 1 ist eine Vollastmengeneinstellvorrichtung 4 befestigt, an deren Einstellschieber 5 eine in den Drehzahlregler 1 hineinragende Lasche 6 mit einem Vollastanschlag 7 angelenkt ist. Die Lasche 6 steht mit einem Gegenanschlag 8 in Wirkverbindung, der als justierbarer Bolzen ausgebildet ist, welcher in einer einen Regelhebel 10 mit einem Mengensteuerglied 11 verbindenden Gelenkgabel 12 quer zu deren Bewegungsrichtung längsverschiebbar befestigt ist. Der aus der Gelenkgabel 12 herausragende Bolzenabschnitt 8a ist konisch ausgebildet, wobei der durchmessermäßig größere Konusteil der Lasche 6 zugewandt ist. Der Bolzenabschnitt 8a stellt quasi eine Anschlagbahn dar, auf der der im rechten Winkel zur Schnittebene des Drehzahlreglers 1 liegende Vollastanschlag 7 (Fig. 2) im unteren Drehzahlbereich im Sinne einer negativen Angleichung entlanggleitet. Die Angleichung wird durch die Fliehgewichtseinrichtung 13 des Drehzahlreglers 1 ausgelöst, die über einen federbelasteten Kipphebel 14 die Lasche 6 drehzahlabhängig verschwenkt.1 shows a
Die Fliehgewichtseinrichtung 13 ist bereits mit einer Angleichvorrichtung in den Fliehgewichten ausgestattet (nicht dargestellt), durch die eine positive Angleichung im oberen Drehzahlbereich zwischen n₃ und n₄ erfolgt.The
Der Angleichweg der negativen Angleichung - wie aus Fig. 3 ersichtlich ist - erstreckt sich von n₁ bis n₂, das bedeutet, daß die Lasche 6 am unteren Ende des konischen Bolzenabschnitts 8a anliegt; die Stellung entspricht dem Angleichbeginn bei n₁. Mit zunehmender Drehzahl wird die Lasche 6 entgegen dem Uhrzeigersinn verschwenkt, bis das obere Ende des konischen Bolzenabschnitts 8a erreicht ist, was dem Angleichende bei n₂ und gleichzeitig einer Erhöhung der Fördermenge entspricht.The adjustment path of the negative adjustment - as can be seen from Fig. 3 - extends from n₁ to n₂, which means that the
Die Anschlagbahn muß nicht eben ausgebildet sein, sondern kann je nach Fördermengenbedarf der Brennkraftmaschine entsprechend verlaufen, z. B. bogenförmig.The stop track does not have to be flat, but can, depending on the delivery rate of the internal combustion engine, run accordingly, e.g. B. arcuate.
Die Lasche 6 nimmt bei Stillstand der Brennkraftmaschine die mit unterbrochenen Linien gekennzeichnete Position ein, damit beim Starten das als Regelstange ausgebildete Mengensteuerglied 11 eine über die Vollastmengenstellung hinausgehende Startstellung einnehmen kann. Nach dem Start wird die Vollastmenge durch das Zusammenwirken des Vollastanschlags 7 und Gegenanschlags 8 begrenzt.The
Claims (2)
- Mechanical speed governor (1) for a fuel injection pump (2) of air-compressing, auto-ignition internal combustion engines, having a flyweight arrangement (13) which, in the upper speed region, has an adaptation device effecting positive adaptation and having a springloaded rocker lever (14) which shifts a bracket (6) having a full-load stop (7) as a function of the speed from a position corresponding to the starting position into a position corresponding to the full-load position in such a way that the full-load stop (7) interacts with a counter stop (8) on an articulated fork (12) connected to a quantity control member (11) of the fuel injection pump (2), characterized in that the counter stop (8) is provided with a stop track effecting a negative adaptation in the lower speed range, along which the full-load stop (7) slides as a function of the speed.
- Speed governor according to Claim 1, characterized in that the counter stop (8) is formed by an adjustable and conical bolt (8a) which passes through the articulated fork (12) and the cone of which tapers towards the articulated fork (12).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4001789 | 1990-01-23 | ||
DE4001789A DE4001789C1 (en) | 1990-01-23 | 1990-01-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0438651A1 EP0438651A1 (en) | 1991-07-31 |
EP0438651B1 true EP0438651B1 (en) | 1994-04-13 |
Family
ID=6398550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90121692A Expired - Lifetime EP0438651B1 (en) | 1990-01-23 | 1990-11-13 | Mechanical speed regulator for a fuel injection pump of compression ignition internal combustion engines |
Country Status (4)
Country | Link |
---|---|
US (1) | US5063900A (en) |
EP (1) | EP0438651B1 (en) |
DE (1) | DE4001789C1 (en) |
ES (1) | ES2055277T3 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4110493C2 (en) * | 1991-03-30 | 1994-08-04 | Elsbett L | Method and device for regulating the speed of engines |
DE4110578A1 (en) * | 1991-03-30 | 1992-10-01 | Bosch Gmbh Robert | FUEL INJECTION PUMP WITH SPEED REGULATOR |
JP3389863B2 (en) * | 1998-08-11 | 2003-03-24 | トヨタ自動車株式会社 | Fuel injection control device for internal combustion engine |
JP5288636B2 (en) * | 2010-09-27 | 2013-09-11 | 株式会社クボタ | Fuel metering device for diesel engine |
CN109736955B (en) * | 2018-12-03 | 2020-01-21 | 中国船舶重工集团公司第七一一研究所 | Oil mixing device |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB237710A (en) * | 1924-07-05 | 1925-08-06 | Mumford Ltd Ag | Improvements in and relating to the fuel injection valves for internal combustion engines of the diesel or semi-diesel type |
US2281222A (en) * | 1941-09-27 | 1942-04-28 | American Bosch Corp | Speed regulator for internal combustion engines |
GB740674A (en) * | 1953-02-14 | 1955-11-16 | Bosch Gmbh Robert | Improvements in fuel injection systems for internal combustion engines |
FR1200960A (en) * | 1957-07-26 | 1959-12-28 | Heinrich Lanz Ag | Regulator for internal combustion engines |
US3130599A (en) * | 1959-06-01 | 1964-04-28 | Continental Aviat & Eng Corp | Variable speed governor control |
US3217700A (en) * | 1963-02-27 | 1965-11-16 | Bosch Arma Corp | Variable speed governor |
DE1900675C3 (en) * | 1969-01-08 | 1975-06-12 | Robert Bosch Gmbh, 7000 Stuttgart | Centrifugal governor for speed control of internal combustion engines |
US3797470A (en) * | 1972-02-10 | 1974-03-19 | Teledyne Ind | Fuel regulating system for an internal combustion engine |
DE2334729B2 (en) * | 1973-07-07 | 1978-04-06 | Robert Bosch Gmbh, 7000 Stuttgart | Centrifugal governor for internal combustion engines |
US3847126A (en) * | 1973-10-01 | 1974-11-12 | Allis Chalmers | Injection timing modulator |
DE2629620C2 (en) * | 1976-07-01 | 1986-01-09 | Robert Bosch Gmbh, 7000 Stuttgart | Centrifugal governor for internal combustion engines |
DE2639961A1 (en) * | 1976-09-04 | 1978-03-09 | Bosch Gmbh Robert | SPEED CONTROLLER FOR INJECTION COMBUSTION ENGINES |
DE2656261C2 (en) * | 1976-12-11 | 1983-10-20 | Robert Bosch Gmbh, 7000 Stuttgart | Centrifugal governor for internal combustion engines |
DD143171B2 (en) * | 1977-11-11 | 1981-12-30 | Klaus Matthees | SPEED ADJUSTING REGULATOR WITH SPEED-RESISTANT VOLUME LIMITING FOR INJECTION PUMPS |
JPS6032018B2 (en) * | 1978-06-05 | 1985-07-25 | 株式会社デンソー | Centrifugal force governor for diesel engines |
DE2838919C2 (en) * | 1978-09-07 | 1986-02-20 | Robert Bosch Gmbh, 7000 Stuttgart | Centrifugal governor for internal combustion engines |
JPS595157Y2 (en) * | 1978-10-13 | 1984-02-16 | 株式会社デンソー | Centrifugal force governor for diesel engines |
DE2942493A1 (en) * | 1979-10-20 | 1981-04-30 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
DE3215790A1 (en) * | 1981-09-04 | 1983-03-24 | Robert Bosch Gmbh, 7000 Stuttgart | DEVICE FOR FUEL INJECTION PUMPS |
US4690115A (en) * | 1985-08-02 | 1987-09-01 | Hoof Products Co. | Engine governor |
DE3741243A1 (en) * | 1987-12-05 | 1989-06-15 | Bosch Gmbh Robert | Speed regulator of fuel injection pumps for internal combustion engines |
DE3901722C1 (en) * | 1989-01-21 | 1989-11-30 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | Mechanical speed controller, provided with an electronically controlled adjustment device, for a series injection pump of internal combustion engines with air compression and autoignition |
-
1990
- 1990-01-23 DE DE4001789A patent/DE4001789C1/de not_active Expired - Lifetime
- 1990-11-13 ES ES90121692T patent/ES2055277T3/en not_active Expired - Lifetime
- 1990-11-13 EP EP90121692A patent/EP0438651B1/en not_active Expired - Lifetime
- 1990-12-04 US US07/621,977 patent/US5063900A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5063900A (en) | 1991-11-12 |
EP0438651A1 (en) | 1991-07-31 |
DE4001789C1 (en) | 1991-03-14 |
ES2055277T3 (en) | 1994-08-16 |
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