EP0152777B1 - Dispositif de réglage pour un moteur à combustion avec une pompe d'injection - Google Patents

Dispositif de réglage pour un moteur à combustion avec une pompe d'injection Download PDF

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Publication number
EP0152777B1
EP0152777B1 EP85100561A EP85100561A EP0152777B1 EP 0152777 B1 EP0152777 B1 EP 0152777B1 EP 85100561 A EP85100561 A EP 85100561A EP 85100561 A EP85100561 A EP 85100561A EP 0152777 B1 EP0152777 B1 EP 0152777B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
stop
pressure
diaphragm
pressure medium
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
EP85100561A
Other languages
German (de)
English (en)
Other versions
EP0152777A3 (en
EP0152777A2 (fr
Inventor
Albert Nolte
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to AT85100561T priority Critical patent/ATE29767T1/de
Publication of EP0152777A2 publication Critical patent/EP0152777A2/fr
Publication of EP0152777A3 publication Critical patent/EP0152777A3/de
Application granted granted Critical
Publication of EP0152777B1 publication Critical patent/EP0152777B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to a control device according to the preamble of claim 1.
  • Such a device is known from DE-A 3 210 903. It is used to adjust the control rod stop depending on various operating parameters, which are continuously determined by an electrical control device and compared with specified values, in order to have the optimum performance of the internal combustion engine available without overloading or endangering it . Among other things, it is possible to increase the service life of the internal combustion engine.
  • the control electronics can record many operating parameters and determine a currently optimal value of the control rod stop.
  • DE-A 3 210 903 describes a control rod stop controlled by control electronics, which is not completely dependent on the control electronics, but which is still mechanically influenced, for example, by the boost pressure of a supercharged internal combustion engine. This is disadvantageous since the electrical setpoint for the control rod stop, which is set by the control electronics, does not necessarily lead to a specific, explicit control value of the control rod stop. If the control electronics are to take into account all influences and operating parameters of the internal combustion engine, the control device disclosed in DE-A 3 210 903 requires a feedback of the actual mechanical manipulated variable.
  • a servomotor with which a linear adjustment and a rotation angle adjustment can be achieved is described in US Pat. No. 3,354,785.
  • the servomotor is provided with a rotary slide valve, on the lateral surface of which a bevel edge is attached.
  • a setpoint for the axial position of the rotary valve shaft can be determined by an exial displacement or a rotation of the rotary valve shaft or by a combination of both movements at the same time.
  • DE-A 3 128 455 shows a servo piston with different piston sections of a fuel injection device of an internal combustion engine.
  • the servo piston is formed with a cam on a circumferential surface.
  • An axially displaceable actuator connected to the servo piston can cause the servo piston to rotate.
  • a rotation of the servo piston by the actuator causes a change in the pressure stroke and control of the fuel injection quantity is achieved.
  • An electrical control device connected to the actuator detects working parameters of the internal combustion engine and changes the injection quantity as a function of the parameters.
  • the control shows an injection device with a servo piston pressurized on both sides by different pressure media.
  • the object of the present invention is to improve the generic control device in such a way that the control rod stop is adjusted in a simple manner exactly according to a desired value which is predetermined by control electronics.
  • the mechanical manipulated variable of the control rod stop should be proportional to the electrical nominal value and free of feedback.
  • an actuator for controlling a control rod stop which is provided with an inclined edge control and is rotated by a stepping motor and interacts with a membrane, advantageously offers the possibility of representing a simple, compact actuator in the embodiment according to the invention.
  • the interaction of the rotary valve and the sleeve, which is connected to the membrane, allows a structure in which the membrane is only subjected to pressure or vacuum on one side.
  • the invention uses electrical energy only to control the rotary valve.
  • the force required to adjust the control rod stop is taken from a pressure medium. Since the rotary valve is rotated axially, it has practically no movement-inhibiting forces to overcome. Small electrical energies thus advantageously control large mechanical forces. According to the invention, this control takes place without feedback with the pressure control circuit integrated in the inclined edge control.
  • the rotary position of the rotary valve in connection with the inclined edge determines the target size of the pressure force, and thus also the position of the control rod stop.
  • the invention is explained in more detail below on the basis of a selected exemplary embodiment.
  • the figure shows a control rod stop according to the invention.
  • the membrane 4 is firmly clamped between an upper housing part 5 and a lower housing part 13.
  • a sleeve 3 is also fixedly connected to this.
  • the rotary valve 2 guided by it, which can be rotated in small steps by the stepping motor 1, which is fixedly mounted in the upper part of the housing 5.
  • the upper edge of the sleeve 3 is provided with a bevel 9.
  • the control rod 12, which is guided axially in the lower housing part 13, is firmly connected to the sleeve 3.
  • the lower housing part 13 is arranged on an injection pump housing such that the control rod 12 already protrudes into the injection pump.
  • the position of the control rod 12 defines the stop 18 for the control rod 17 via the angle row 16. Furthermore, a spring 11 presses the membrane 4 and thus the sleeve 3 together with the control rod 12 in the unloaded state to the upper maximum value, ie the opening 8 is closed.
  • the fluid enters the pressure space above the membrane 4 through the inlet 6 via the throttle bore 7 and leaves it via the opening 8, the gap 10 and the drain bore 14 Throttle cross section of the throttle bore 7 is smaller than the flow cross section of the opening 8.
  • the control electronics determine a specific position of the control rod stop depending on the operating parameters. Then the rotary valve 2, again controlled by the stepping motor 1, assumes a certain angular position. If the drain opening 8 is now blocked by the sleeve 3, pressure begins i.e. also a force to build up on the membrane 4, which presses it down, ie also the sleeve 3. This continues until the inclined edge 9 meets the drain hole 8. The position of the inclined edge 9, which partially covers the bore 8, regulates itself automatically so that the inflow and outflow of the pressure medium remain in balance. The height position of the membrane 4 is thus virtually fixed. For each rotary position of the rotary valve 2, therefore, an exact position of the inclined edge 9 belongs, with which the control rod 12 is also fixed. This type of control is clear and does not require feedback of the control variable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)

Claims (5)

1. Dispositif pour commander une butée (18) de la tige de réglage d'une pompe d'injection comportant un organe de réglage sollicité par un fluide sous pression, cet organe de réglage commandant par l'intermédiaire d'un organe d'actionnement, la butée (18) de la tige de réglage en fonction de la pression du fluide sous pression, tandis qu'un dispositif électronique de réglage distinct prédéfinit par des impulsions électriques de commande, la valeur de consigne momentanée nécessaire de la butée (18) de la tige de réglage, dispositif caractérisé en ce qu'une commande par arête oblique reliée à l'organe de réglage, est constituée d'une arête oblique (9) disposée à l'extrémité d'un manchon (3) et d'un tiroir rotatif (2) guidé dans ce manchon avec un orifice d'évacuation (8) associé à l'arête oblique (9), le manchon (3) étant solidaire d'une membrane (4) sollicitée d'un côté par la pression, et accompagnant le déplacement de cette membrane en entraînant alors l'organe d'actionnement relié au manchon (3), cet organe actionnant, de son côté, la butée (18) de la tige de réglage, le tiroir rotatif (2) étant fixe en direction axiale et étant susceptible de pivoter angulairement sous l'action d'un moteur pas à pas (1 ).
2. Dispositif selon la revendication 1, caractérisé en ce que la commande à arête oblique avec l'arête oblique (9) pénètre dans la chambre de pression délimitée par la membrane (4) et que la membrane (4) est sollicitée par un ressort (11) qui engendre un effort élastique dirigé en sens inverse de l'effort exercé par le fluide sous pression.
3. Dispositif selon les revendications 1 ou 2, caractérisé en ce qu'il est prévu sur l'admission (6) du fluide sous pression, un perçage d'étranglement (7) dont la section transversale d'étranglement a une valeur inférieure à la section de passage d'un perçage d'évacuation (8) de la commande à arête oblique.
4. Dispositif selon une des précédentes revendications, caractérisé en ce que l'organe d'actionnement comporte une tige (12) guidée axialement dans la partie inférieure (14) du boîtier et qui est disposée sur l'axe prolongé du tiroir rotatif (2), et cet organe comporte également un levier coudé (16) couplé sur la tige (12).
5. Dispositif selon une des précédentes revendications, caractérisé en ce que le levier coudé (16), levier dont le point d'articulation est prévu sur le boîtier (15) de la pompe d'injection, constitue la butée (18) de la tige de réglage (17).
EP85100561A 1984-02-18 1985-01-19 Dispositif de réglage pour un moteur à combustion avec une pompe d'injection Expired EP0152777B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85100561T ATE29767T1 (de) 1984-02-18 1985-01-19 Regeleinrichtung fuer eine brennkraftmaschine mit einer einspritzpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3405953 1984-02-18
DE19843405953 DE3405953A1 (de) 1984-02-18 1984-02-18 Regeleinrichtung fuer eine brennkraftmaschine mit einer einspritzpumpe

Publications (3)

Publication Number Publication Date
EP0152777A2 EP0152777A2 (fr) 1985-08-28
EP0152777A3 EP0152777A3 (en) 1985-10-16
EP0152777B1 true EP0152777B1 (fr) 1987-09-16

Family

ID=6228185

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100561A Expired EP0152777B1 (fr) 1984-02-18 1985-01-19 Dispositif de réglage pour un moteur à combustion avec une pompe d'injection

Country Status (3)

Country Link
EP (1) EP0152777B1 (fr)
AT (1) ATE29767T1 (fr)
DE (2) DE3405953A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2888508A1 (fr) * 2005-07-13 2007-01-19 Patrick Sziraky Utilisation du 3,3',4',5,7 pentamethoxyflanone dans des compositions cosmetiques au dermatologiques

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7437614U (de) * 1975-04-10 Motoren Und Turbinen Union Friedric Sicherheitseinrichtung für eine Brennkraftmaschine
US3354785A (en) * 1964-03-27 1967-11-28 Kawasaki Heavy Ind Ltd Mechanism for mutual change between different types of displacement and an amplifier of force or torque
US3334397A (en) * 1964-08-19 1967-08-08 Chrysler Corp Method of forming a control valve for a servo system
FR1598682A (fr) * 1968-09-19 1970-07-06
DE2453576A1 (de) * 1974-11-12 1976-05-13 Motoren Turbinen Union Sicherheitseinrichtung fuer eine brennkraftmaschine
DE2804038A1 (de) * 1978-01-31 1979-08-09 Bosch Gmbh Robert Einspritzpumpe mit elektronisch gesteuertem vollastanschlag
DE2908792A1 (de) * 1979-03-07 1980-09-11 Bosch Gmbh Robert Steuereinrichtung fuer brennkraftmaschinen, insbesondere ladedruckabhaengiger vollastanschlag fuer aufgeladene fahrzeug-dieselmotoren
DE3061662D1 (en) * 1979-03-21 1983-02-24 Friedmann & Maier Ag Control circuit for regulating an injection pump for diesel engines
JPS5726261A (en) * 1980-07-24 1982-02-12 Diesel Kiki Co Ltd Fuel injector of internal combustion engine
DE3135479A1 (de) * 1981-09-08 1983-03-17 Friedrich 7922 Herbrechtingen Hofmann Elektronische regelung der stellung einer drosselklappe
DD209086A3 (de) * 1981-09-09 1984-04-18 Fritz Lahl Korrektureinrichtung fuer aufgeladene einspritzbrennkraftmaschinen
DE3210903A1 (de) * 1982-03-25 1983-09-29 Klöckner-Humboldt-Deutz AG, 5000 Köln Regeleinrichtung fuer einen dieselmotor
US4428354A (en) * 1982-06-21 1984-01-31 General Motors Corp. Diesel engine fuel limiting system

Also Published As

Publication number Publication date
EP0152777A3 (en) 1985-10-16
DE3560648D1 (en) 1987-10-22
DE3405953A1 (de) 1985-10-17
ATE29767T1 (de) 1987-10-15
EP0152777A2 (fr) 1985-08-28

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