EP0425801B1 - Régulateur de vitesse centrifuge pour moteurs à combustion interne - Google Patents

Régulateur de vitesse centrifuge pour moteurs à combustion interne Download PDF

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Publication number
EP0425801B1
EP0425801B1 EP90117627A EP90117627A EP0425801B1 EP 0425801 B1 EP0425801 B1 EP 0425801B1 EP 90117627 A EP90117627 A EP 90117627A EP 90117627 A EP90117627 A EP 90117627A EP 0425801 B1 EP0425801 B1 EP 0425801B1
Authority
EP
European Patent Office
Prior art keywords
adjusting member
speed governor
supporting part
governor according
feed
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
Application number
EP90117627A
Other languages
German (de)
English (en)
Other versions
EP0425801A1 (fr
Inventor
Sieghart Dipl.-Ing. Maier
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
Publication of EP0425801A1 publication Critical patent/EP0425801A1/fr
Application granted granted Critical
Publication of EP0425801B1 publication Critical patent/EP0425801B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • F02D1/04—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 by mechanical means dependent on engine speed, e.g. using centrifugal governors
    • F02D1/045—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 by mechanical means dependent on engine speed, e.g. using centrifugal governors characterised by arrangement of springs or weights
    • 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 centrifugal governor according to the preamble of claim 1.
  • Centrifugal speed regulators are known (CH-PS 319 357), in which the transmission of the control movements from the centrifugal weights to the delivery rate adjustment element is carried out by a regulator sleeve, the effective length of which can be changed by screwing into a thread.
  • This centrifugal speed governor also contains the additional function of actuating a shift lever in the manner of a starting quantity release lever; Usually its position is adjusted by the previously performed setting, which serves for an exact position assignment between the quantity adjusting element and the flyweights, and thus changes its desired position, so that the function intended for the start quantity release lever is impaired or even insufficient.
  • the position of the shift lever is influenced by components of the centrifugal speed controller, which in their combination form a tolerance chain, so that the total tolerance results in a large adjustment range for the shift lever.
  • the adjustment of the gearshift lever is usually carried out by bending the gearshift lever, the gearshift lever being able to break or at least crack due to the large adjustment range, as a result of which the function of the gearshift lever can be lost without prior notice during operation of the centrifugal speed controller.
  • the centrifugal speed governor according to the invention with the characterizing features of claim 1 has the advantage that the above disadvantages are avoided.
  • the centrifugal speed governor has a locking device with which the adjustment of the articulation position of the shift lever operating as a starting quantity release lever can be carried out sensitively and thus with fine tolerance.
  • the setting achieved in this way is ensured by the pretensioning force of a trailing spring in connection with the self-locking positive engagement of the toothing of the latching device.
  • This setting only affects the position of the shift lever and enables the starting quantity to be triggered precisely at a predetermined speed.
  • the adjusting member according to claim 2 has an axially movable stop pin, in which the end face referred to as the end edge, from which the actuation of the shift lever is based, is not based on a body-related measure of the contour of the adjusting member, but indirectly by means of a separate component, the stop pin, is formed and thus an individual attitude is given.
  • guide surfaces are attached directly to the stop pin, which, when the shift lever is adjusted, fix its rotational position in the support part by means of the stop pin.
  • an additional drag spring is inserted between the pressure piece and the support part or stop bolt, which enables a smaller axial stroke of the adjusting member and an advantageous change in the resulting spring constant.
  • FIG. 1 shows a simplified representation of a longitudinal section through the centrifugal force governor according to the invention
  • FIG. 2 shows a partial section of the first exemplary embodiment with the actuating element of FIG Centrifugal speed controller as part of a locking device, which is partially shown enlarged in Figure 2a and Figure 3 shows an alternative spring abutment for an additional drag spring of the second embodiment.
  • the centrifugal force governor shown in simplified form in FIG. 1 carries, in a housing 11, a centrifugal weight regulator 13 fastened on a drive shaft 12 of a known and otherwise only partially illustrated injection pump 15 for internal combustion engines, the centrifugal weights 14 of which, in a known manner, under the effect of the centrifugal force against the force of Control springs 16 transmit their control movement via angled lever 17 and connecting bolts 18 to an adjusting member 19 designed as a control sleeve.
  • the adjusting member 19 is connected to a control linkage 24, which is known to have an adjusting lever 25 which serves to set the rotational speed and can be swiveled within a limited angular range, the movements of which are known to a control rod 31, which positions an adjusting member 32, are transferred.
  • the path of the control rod 31 is limited in the direction of increasing flow rate by a stop 33 which interacts with a counter stop 35. As soon as the control linkage 24 strives to push the control rod 31 beyond the position delimited by the stop 33, the excess movement of the control linkage 24 is transmitted indirectly to the adjusting member 19. A trailing spring 36, which is also arranged in the adjusting member 19, is thus overpressed and the regulator linkage 24 is thus protected against overload.
  • the first exemplary embodiment has, as shown in FIG. 2 and partially enlarged in FIG. 2a, a recess 37 in the wall 21 through which the connecting bolt 18 is guided with play and can perform slight lateral evasive movements.
  • the pressure piece 34 is arranged within a longitudinal bore 38 of the adjusting member 19 delimited by the wall 21 and is coupled via an external end face 39 to the connecting bolt 18 and thus indirectly to the flyweights 14. With an inner end face 41, the pressure piece 34 lies on the drag spring 36, which is designed as a helical compression spring.
  • the trailing spring 36 is supported on an inner side 42 of a collar 43 of a supporting part 44, the supporting part 44 consisting of a basic body 46 which projects into the trailing spring 36 and the collar 43 which radially widens the basic body 46.
  • the collar 43 includes, again in a radial extension, a nose 47 which protrudes into a recess 48 in the wall 21 and thereby forms an anti-rotation device and, in accordance with the pretensioning force of the trailing spring 36, an axial securing device for the supporting part 44, based on its position in the adjusting member 19.
  • the recess 48 is wider than the axial dimension of the nose 47, so that the support part 44 is able to perform a slight compensating movement against the actuating force of the trailing spring 36.
  • the support part 44 is provided within its base body 46 in deviation from the circular shape with two flat, mutually parallel sections which serve as guide surfaces. These sections lead with movement play a head part 52 of a stop bolt 53, which is fitted with a corresponding shape and guide surfaces 51 in the base body 46 of the support part 44.
  • the stop pin 53 also includes a shaft 54 which is circular in cross section and which carries an external thread 56 which is in engagement with the internal thread 57 of an adjusting element 58 which partially surrounds the shaft 54.
  • the shaft 54 ends in an end edge 61 which projects beyond the end face 23 of the adjusting member 19 and which has a contour shaped like a lens head. From the end edge 61 is articulated in a known manner, as shown, for example, in CH-PS 319 357, a spring-loaded shift lever 62 which is only indicated and which, as a start quantity release lever, controls the positioning of the control rod 31 between the positions of full load quantity and start quantity via the of the stop 33 positioned thereon and the counter stop 35 connected to the quantity adjusting element 32.
  • the actuating element 58 has the basic shape of a narrow hollow cylinder which is mounted in the longitudinal bore 38 of the adjusting member 19 and has an outer end face 63 and an inner end face 64 which runs parallel to an outer side 66 of the collar 43 of the support part 44.
  • the actuating element 58 in its function as an adjusting nut is part of a locking device 67, which is formed with locking teeth 68, which are attached to the inner end face 64, which is opposite the collar 43, and which are in engagement with a counter-toothing 69, which is located on the Outside 66 of the federal government 43 is located.
  • the actuating element is axially secured by an axial securing element 71 engaging in the wall 21 in the form of a snap ring.
  • a rotary mount 72 is attached, via which the actuating element 58 can be coupled and rotated with a tool, which is no longer shown.
  • the rotary seat 72 is formed in the first embodiment in the form of recesses; however, it can alternatively be represented with protruding approaches.
  • the latching device 67 which works in the manner of a spur tooth coupling, is combined with its main components, actuating element 58, support part 44 and drag spring 36 to form a functional unit.
  • This axial displacement of the end edge 61 leads, based on the adjusting member 19, to a specifically changeable change in the position of the shift lever 62 acting as a starting quantity release lever and thus to a decoupled adjustment of the shift lever 62 on the one hand to the linkage of the control linkage, which takes place via the shoulder 22 of the adjusting member 19, and on the other hand to the articulation of the flyweights 14, which is carried out via the connecting pin 18 mounted in the adjusting member 19.
  • latching device 67 which works as a spur tooth coupling
  • it can alternatively also be designed with other toothing forms, for example as external serration.
  • an additional towing member 73 (shown in broken lines in FIG. 2) is inserted in the adjusting member 19.
  • a first spring abutment 74 is arranged opposite one another and each in the form of a shoulder, and a second spring abutment 76 is attached to the pressure piece 34 and, alternatively to the stop pin 53, a second spring abutment 76, between which the additional trailing spring 73, also like the trailing spring 36, is designed as a helical compression spring , is used.
  • the guidance of the additional drag spring 73 via the two spring abutments 74, 76 is shown as an example for the pressure piece 34 as an alternative to the attachment-shaped configuration in the form of a recess 77, which is cylindrical in the second exemplary embodiment.
  • This configuration can simultaneously be transferred to the second spring abutment 76 of the support part 44.

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  • 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)

Claims (10)

  1. Régulateur de vitesse centrifuge pour moteurs à combustion interne à injection, dont les masses centrifuges (14) réglent en fonction de la vitesse de rotation à l'encontre de la force d'au moins un ressort de régulation (16), un organe de réglage (19) servant de manchon de régulateur, contenant au moins un ressort de freinage (36), organe qui actionne au moyen d'un tringlerie de régulateur (24) un organe de réglage du débit de refoulement (32) d'une pompe d'injection (15) et est logé dans le boulon de butée (53), qui peut être couplé par son positionnement axial avec un levier de commande (62), la course de l'organe de réglage du débit de refoulement (32) étant limitée par au moins une butée (33) et la butée (33) limitant le débit de pleine charge étant déplacée au moyen du levier de commande (62) étant la phase de démarrage du moteur à combustion interne, à partir de la course d'une contre-butée (35) reliée à l'organe de réglage du débit de refoulement (32) et de cette façon l'organe de réglage du débit de refoulement (32) pouvant entre poussé dans une position dans laquelle on dose un débit de refoulement de démarrage dépassant le débit de refoulement de pleine charge, régulateur de vitesse centrifuge, caractérisé en ce que la mise en position axiale du boulon de butée (53) est modifiée par un dispositif d'encliquetage (67) qui est en prise avec une pièce d'appui (44) disposée de façon bloquée en rotation dans l'organe de réglage (19), sous l'action du ressort de freinage (36).
  2. Régulateur de vitesse centrifuge selon la revendication 1, dans lequel l'organe de réglage (19) est couplé d'une part par un épaulement (22) sur son contour extérieur à la tringlerie du régulateur (24) et indirectement par un bord final (61) au levier de commande (62) et par ailleurs porte une tige de liaison (18) qui forme la liaison avec les masses centrifuges (14), régulateur caractérisé en ce que le boulon de butée (53) est mobile axialement à l'intérieur d'un alésage longitudinal (38) de l'organe de réglage (19) et est guidé par les faces de guidage (51) du côté du pourtour dans la pièce d'appui (44) par interpénétration par la forme.
  3. Régulateur de vitesse centrifuge selon la revendication 2, caractérisé en ce que la pièce d'appui (44) présente un collet (43) avec un nez (47) faisant saillie radialement, qui vient en prise pour former un blocage en rotation dans un évidement (48) de la paroi (21) de l'organe de réglage (19).
  4. Régulateur de vitesse centrifuge selon la revendication 2 ou 3, caractérisé en ce que le mouvement axial du boulon de butée (53) a lieu au moyen d'un élément de réglage (58) qui est monté dans l'alésage longitudinal (38) de l'organe de réglage (19) et repose sur un élément de blocage axial (71).
  5. Régulateur de vitesse centrifuge selon la revendication 4, caractérisé en ce que l'élément de réglage (58) présente du côté frontale, tourné vers la pièce d'appui (44) les dents d'encliquetage (68).
  6. Régulateur de vitesse centrifuge selon la revendication 5, caractérisé en ce que la pièce d'appui (44) présente sur le collet (43) une contre-denture (69) venant en prise dans les dents d'encliquetage (68).
  7. Régulateur de vitesse centrifuge selon la revendication 6, caractérisé en ce que les dents d'encliquetage (68) constituant le dispositif d'encliquetage (67) et la contre-denture (69) sont constituées sous la forme d'un accouplement à denture frontale.
  8. Régulateur de vitesse centrifuge selon la revendication 6, caractérisé en ce que le dispositif d'encliquetage (67) est constitué sous la forme d'une denture à cannelures située extérieurement.
  9. Régulateur de vitesse centrifuge selon l'une des revendications précédentes, caractérisé en ce que le ressort de freinage (36) est enserré entre la collerette de la pièce d'appui (44) et une pièce de poussée (34) s'appuyant sur la tige de liaison (18).
  10. Régulateur de vitesse centrifuge selon la revendication 9, caractérisé en ce qu'entre la pièce de poussée (34) et la pièce d'appui (44) ou le boulon de butée (53) est enserré un ressort additionnel de freinage (73).
EP90117627A 1989-10-31 1990-09-13 Régulateur de vitesse centrifuge pour moteurs à combustion interne Expired - Lifetime EP0425801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3936184A DE3936184A1 (de) 1989-10-31 1989-10-31 Fliehkraftdrehzahlregler fuer einspritzbrennkraftmaschinen
DE3936184 1989-10-31

Publications (2)

Publication Number Publication Date
EP0425801A1 EP0425801A1 (fr) 1991-05-08
EP0425801B1 true EP0425801B1 (fr) 1993-12-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP90117627A Expired - Lifetime EP0425801B1 (fr) 1989-10-31 1990-09-13 Régulateur de vitesse centrifuge pour moteurs à combustion interne

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EP (1) EP0425801B1 (fr)
JP (1) JPH03156131A (fr)
DE (2) DE3936184A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2626524C1 (ru) * 2016-02-09 2017-07-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Вятский государственный университет" Система регулирования дизеля

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH319357A (de) * 1953-02-14 1957-02-15 Bosch Gmbh Robert Kraftstoffeinspritzanlage für Brennkraftmaschinen
AT288088B (de) * 1967-11-14 1971-02-25 Bosch Gmbh Robert Fliehkraftregler zur Drehzahlregelung von Dieselmotoren
DE2308260C2 (de) * 1973-02-20 1983-11-24 Robert Bosch Gmbh, 7000 Stuttgart Fliehkraftdrehzahlregler für Einspritzbrennkraftmaschinen
DE2334729B2 (de) * 1973-07-07 1978-04-06 Robert Bosch Gmbh, 7000 Stuttgart Fliehkraftdrehzahlregler für Einspritzbrennkraftmaschinen
DE3301416A1 (de) * 1983-01-18 1984-07-19 Robert Bosch Gmbh, 7000 Stuttgart Drehzahlregler einer kraftstoffeinspritzpumpe

Also Published As

Publication number Publication date
DE3936184A1 (de) 1991-05-02
EP0425801A1 (fr) 1991-05-08
JPH03156131A (ja) 1991-07-04
DE59003688D1 (de) 1994-01-13

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