EP0268584A1 - Methode d'installation d'une pompe a injection sur un moteur a combustion interne. - Google Patents

Methode d'installation d'une pompe a injection sur un moteur a combustion interne.

Info

Publication number
EP0268584A1
EP0268584A1 EP86904103A EP86904103A EP0268584A1 EP 0268584 A1 EP0268584 A1 EP 0268584A1 EP 86904103 A EP86904103 A EP 86904103A EP 86904103 A EP86904103 A EP 86904103A EP 0268584 A1 EP0268584 A1 EP 0268584A1
Authority
EP
European Patent Office
Prior art keywords
pump
plug
adjusting
adjustment
internal combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86904103A
Other languages
German (de)
English (en)
Other versions
EP0268584B1 (fr
Inventor
Jean-Pierre Cigolotti
Denis Devilliere
Jean Leblanc
Reinhard Schwartz
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 EP0268584A1 publication Critical patent/EP0268584A1/fr
Application granted granted Critical
Publication of EP0268584B1 publication Critical patent/EP0268584B1/fr
Expired legal-status Critical Current

Links

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
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49231—I.C. [internal combustion] engine making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49231—I.C. [internal combustion] engine making
    • Y10T29/49233—Repairing, converting, servicing or salvaging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making
    • Y10T29/49238—Repairing, converting, servicing or salvaging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49895—Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y10T29/49948—Multipart cooperating fastener [e.g., bolt and nut]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y10T29/49963—Threaded fastener

Definitions

  • the invention is based on a method according to the generic preamble of the main claim and furthermore relates to a multi-cylinder and single-cylinder internal combustion engine with plug-in pumps mounted according to the method according to the invention.
  • Single-cylinder plug-in fuel injection pumps, or plug-in pumps for short are always used to advantage if the effort for an in-line or distributor injection pump is too great for engines with low cylinder output (approx. 2 to 30 KW / cyl.), And when using short pressure lines and the to achieve better injection conditions that can be achieved, the injection pumps are to be mounted as close as possible to the injection nozzle of the associated engine cylinder.
  • Plug-in pumps do not have their own drive, but are driven by an engine-specific camshaft.
  • the control of the injection quantity takes place via a motor-specific control rod, which, like the delivery quantity adjustment element of the plug-in pump, lies below the associated mounting flange within the pump fitting of the internal combustion engine.
  • Pumps of this type are known, for example, from Robert Bosch GmbH, Stuttgart, with the designations PF 1Q ... and PFR 1K ... (see, for example, the publication "Injection equipment for diesel engines with injection pump PF"; VDT-UBP 001/6 from Robert Bosch GmbH, Stuttgart), and each of these pumps is set to a nominal flow rate for all pumps of the same series before they are attached to the internal combustion engine on a test bench using a test base and with the aid of an adjustment arrangement in the associated pump fit Internal combustion engine used and attached there.
  • a first adjustment aid e.g. B. a crack mark
  • an adjustment arrangement is attached to the mounting flange of the plug-in pump
  • a second adjustment aid z. B. also a crack mark, the adjustment arrangement on the pump fitting of the internal combustion engine in each case in a position assigned to the test basic position of the delivery quantity adjusting member.
  • both adjustment aids are then brought into line.
  • the adjustment aids used in the known method and specified there, e.g. B. crack marks or hole-pin connectors are immovably fixed after they are attached and can no longer be corrected. In the event of an inadvertent incorrect setting or in the event of the repair of any component, this leads to time-consuming reworking, or it is necessary to replace important components.
  • the invention is based on the object of improving the known method for mounting the plug-in pumps and the associated adjustment arrangement and the internal combustion engine in such a way that the method is completely independent of the skill of the compartment mounting the plug-in pump worker and can also be carried out fully automatically by robots if the corresponding quantities are available. In the event of incorrect settings or in the event of a repair, it should also be possible to attach the necessary adjustment aids as often as required without time-consuming rework.
  • Both the fixing pin of the adjusting bolt, which serves as the first adjusting aid and is adjustably mounted in the mounting flange, and the fixing groove provided for receiving the fixing pin in the adjusting plate provided on the flange surface of the pump fitting are fully adjustable and can be in their position after the setting be secured.
  • the delivery quantity adjusting member is then coupled with the motor's own control rod and the fixing pin is simply inserted into the fixing groove of the setting plate.
  • the adjusting bolt carrying the fixing pin is designed as a front crank with an eccentrically attached fixing pin
  • the adjusting pin can advantageously be used as an adjusting tool for rotating the injection pump, as a result of which the delivery rate setting on the insert pump is considerably simplified and less expensive.
  • the adjustment plate is inserted as a support for the mounting flange of the plug-in pump between the mounting flange and the flange surface of the pump fitting and can thus also serve as a preliminary stroke adjustment plate.
  • all pumps of the same series are supplied with the same pitch from the mounting flange to the outermost drive-side limitation of the plug-in pump, and at the pump fitting of the internal combustion engine, the same pitch is set by selecting the adjustment plates provided with a suitable thickness dimension, so that without special adjustment of the dimensions determining the preliminary stroke each plug-in pump of the same series can be used in any pump fitting of the internal combustion engine.
  • the preliminary stroke determining the start of conveyance is then reliably guaranteed without fitting and adjustment work and without the need for complex inspection work, and the adjusting plates also serve as preliminary stroke component disks.
  • the features of the associated multi-cylinder internal combustion engine are defined, the engine's own control rod, as is known from EP-PS 0 090 226 cited at the beginning, is formed in one piece with the counter-coupling parts for the delivery rate adjustment elements of the plug-in pumps arranged in series, and each with an adjustment arrangement formed by two adjustment aids for the installation of the plug-in pumps is equipped.
  • this multi-cylinder internal combustion engine is designed in accordance with the characterizing features of claim 5, and the advantages already mentioned for the method are achieved.
  • the fixing pin forming the first adjustment aid is provided within a recess that is recessed in relation to the bearing surface of the mounting flange of the plug-in pump and is open radially outwards, and the adjusting plate has approximately the shape of a small washer protruding from the outside into the recess with a fixing groove forming the second adjustment aid encompassing the fixing pin on both sides and being fastened to the flange surface of the pump fitting by means of a screw.
  • Such a small adjusting plate is cheap and easy to manufacture and does not take on any other functions, so that no particular requirements are imposed either with regard to the thickness tolerance or the flatness of this plate, as would be necessary if the adjusting plate were also used as a forward stroke adjusting disk.
  • the washer-shaped setting plate is provided with an auxiliary means for aligning the mounting position of the setting plate in addition to the fixing groove and at least one through opening for the fastening screw; and according to claim 9, this aid is formed by two recesses, preferably arranged symmetrically to the fixing groove, into which position-securing pins of the dummy pump can then engage.
  • FIG. 1 shows the first exemplary embodiment with a plug-in pump designed according to the invention and mounted on the associated internal combustion engine
  • FIG. 2 shows a plan view in the direction of arrow II in FIG. 1
  • FIGS. 3 to 7 serve to explain the method
  • FIG. 3 shows a simplified representation of the projection dimension UT required for the adjustment of the forward stroke
  • FIG. 3a shows a section IIa from FIG. 3 with a spring plate that can be replaced to adjust the forward stroke
  • FIG. 4 shows the adjustment of the delivery rate
  • FIG. 5 shows a sketch for setting the depth dimension on the internal combustion engine corresponding to the projection dimension UT
  • FIG. 6 shows the pump fitting on the internal combustion engine with the dummy pump used to adjust the position of the setting plate
  • FIG. 7 shows a top view in Direction of arrow VII in Figure 6
  • FIG. 8 shows the second exemplary embodiment with an adjustment plate protruding into a recess on the mounting flange of the plug-in pump, partly in section along line VIII in FIG. 9, and
  • FIG. 9 is a plan view in the direction of arrow IX in FIG. 8.
  • FIGS. 1 and 2 show in longitudinal section and plan view a single-cylinder plug-in fuel injection pump 11, hereinafter referred to as a plug-in pump for short, which is inserted into a housing 10 of the associated internal combustion engine.
  • a pump cylinder 15 is fastened in a pump housing 12 within a pump housing 12 with the interposition of a pressure valve 13 by means of a pipe fitting 14 in a manner known per se in the pump housing 12.
  • a pump piston 16 is axial within the pump cylinder 15 and rotatably guided and carries on its outer surface an oblique control edge 17 which cooperates with a control bore 18 in the wall of the pump cylinder 15 to determine the delivery rate.
  • a regulating sleeve forming a delivery quantity adjusting member 19 is coupled in a rotationally fixed manner to the pump piston 1 6, but allows its lifting movement and, as a coupling part 20 for actuation by a motor-specific control rod 21, carries a driving bolt which is fastened to a handlebar arm and is arranged parallel to the longitudinal axis of the pump piston.
  • the coupling part 20 engages in a slot-like counter-coupling part 22 on the engine-specific control rod 21.
  • the engine-specific control rod 21 is designed for use in a multi-cylinder internal combustion engine in one piece with the counter-coupling parts 22 which are fixed in position in the cylinder spacing (not shown in more detail).
  • each pump fitting 23 of the housing 10 of the internal combustion engine is provided on the installation side with a flange surface 23a for fastening the plug-in pump 11.
  • the pump housing 12 of the plug-in pump 11 carries a radially projecting fastening flange 24, which in the example shown contains two through bores 25 for fastening screws 26 (see FIG. 2).
  • the through holes 25, which can also be formed as elongated holes, are so large that a partial rotation of the pump housing 12 is possible for the basic setting of the delivery rate.
  • an adjusting arrangement 27 is provided at the connection point between the mounting flange 24 of the plug-in pump 11 and the flange surface 23a on the housing 10, which is formed by two adjusting aids.
  • the first adjustment aid used is a one mounted in the mounting flange 24 so as to be rotatably adjustable and on the drive side protruding fixing pin 28 of an adjusting bolt 29.
  • This adjusting bolt 29 is designed as a front crank with an eccentrically attached fixing pin 28 and can also be used in this embodiment as an adjusting tool for rotating the plug-in pump.
  • An adjusting bolt with a centrally arranged fixing pin is also conceivable, which then has to be fastened so as to be displaceable in the circumferential direction in an elongated hole in the fastening flange 24 (not shown).
  • the installation position of the fixing pin 28 is secured by a fastening nut 30 and additionally sealed by a cap 31.
  • the adjusting bolt 29 can also be secured against twisting by other securing means, such as caulking.
  • an adjustment plate 32 is inserted which, with a fixing groove 33 (see also FIG. 7) forming the second adjustment aid, encompasses the fixing pin 28 on both sides and, in addition to through openings 34 for the fixing screws 26 of the plug-in pump 11 and a central opening 35 for receiving the pump housing 12 also has through openings 36 for fastening the adjustment plate 32 serving screws 37.
  • These through holes 3 k and 36 in the setting plate 32 are so large that they, like the through holes 25 in the mounting flange 24 of the plug-in pump, allow the necessary partial rotatability of the setting plate 32 described further below.
  • These through openings 34 and 36 can of course also be designed as elongated holes.
  • a spring plate 33 is fastened, which in the embodiment variant according to FIG. 1 receives a pre-lifting plate 39 with the thickness dimension e, the latter outer end face forms a drive-side boundary 4 1 of the plug-in pump 11.
  • a roller tappet 42 belongs to the cam drive 43 (see also FIG. 5) of the internal combustion engine in the described design of the plug-in pump 11, but can also be an integral part of the pump in another known design of the plug-in pumps.
  • FIGS. 3 to 7 serve to explain the method according to the invention for attaching the plug-in pumps 11 to an internal combustion engine and also contain the necessary devices.
  • FIG. 3 shows once again the protrusion dimension UT, which extends from the mounting flange 24 to the drive-side limit 41 of the plug-in pump, and in FIG. 3a a spring plate 38 'is attached to the piston foot of the pump piston 1 6, in part and in an enlarged representation as a variant of the spring plate 38, whose thickness dimension e also serves to set the projection dimension UT, and which forms the drive-side limit 41 of the plug-in pump 11 with its drive-side end face.
  • FIG. 4 shows the plug-in pump 11 used for adjusting the delivery rate in a test base 44.
  • the fixing pin 28 serving as the first adjustment aid is in this case formed by a recess -5 designed as a fixing groove and serving as a device for attaching the first fixing aid recorded, and the coupling part 20 of the delivery rate adjusting member 19 is held by a control rod 21 corresponding to the motor control rod 21 of the test stop 44 m of the basic test position (e.g. middle position) or in a test position deviating from this basic test position by a predetermined distance.
  • the angular position assumed between the coupling part 20 and the fixing pin 28 is the same as the angle ⁇ shown in FIGS. 2 and 7 with the engine control rod 21 in the test basic position.
  • FIG. 5 shows the dimensions at the pump fitting 23 of the internal combustion engine that are required for the definition of the forward stroke on the plug-in pump.
  • the projection dimension UT set on the plug-in pump 11 is set on the internal combustion engine as a depth dimension, but is identified in the same way. It is composed of a distance dimension X, which extends from the flange surface of the pump fitting 23 to a support surface 47 on the cam drive 43, and the thickness dimension c of the adjusting plate 32, which is provided in different thickness dimensions.
  • the cam drive 43 here also includes the roller tappet 42, so that the bearing surface 47 is located on the roller tappet 42 of the cam drive 43. If a plug-in pump with an integrated roller tappet were used, the dimension UT would extend to the base circle of the associated drive cam, which then forms the bearing surface 47. The projection dimension UT is then produced on the plug-in pump by changing the rollers.
  • FIGS. 6 and 7 show, among other things, a dummy pump 48 inserted into the pump fitting 23 and used to adjust the setting plate 32.
  • the dummy pump 48 has a dummy body 49 corresponding to at least a part of the pump housing 12, which is inserted into the pump fitting 23 and one corresponding to the coupling part 20 of the delivery rate adjustment element 19
  • Positionally fixed coupling part 50 carries on a flange-like projection 51 a fixing pin 52 corresponding in position and size to the fixing pin 28.
  • the positionally fixed coupling part 50 and the fixing pin 52 are at a fixed angular distance from one another which is assigned to the basic test position of the motor-specific control rod 21 and which is characterized by the angle ok.
  • the same dimension UT (see FIGS. 1 and 3) from the mounting flange 24 to the outermost drive-side limit 41 of the plug-in pump 11 is set by installation to set the advance stroke VH that determines the start of delivery or replacement of a component provided with a suitable thickness dimension e, e.g. B. the spring plate 38 'in Figure 3a or the Vorhubplatte 39 in Figure 1, set;
  • the same projection dimension UT is set as the depth dimension at the pump fitting 23 of the internal combustion engine (see FIG. 5), including the adjusting plate 32 up to the bearing surface 47 on the cam drive 43 by selecting the adjusting plate 32 provided with a suitable thickness dimension c ;
  • the plug-in pump 11 is inserted into the test base 44 and that Coupling part 20 of the delivery quantity adjusting member 19 is held by the actuating rod 46 of the test base 44 on the test bench in the basic test position or in a test position that deviates from this basic test position by a predetermined distance, the fixing pin 28 serving as the first adjustment aid is received by the recess 45 of the test base 44 ;
  • the delivery rate of the plug-in pump 11 is measured and the latter rotated until the delivery rate corresponds to a desired delivery rate, the adjusting bolt 29 provided with the eccentric fixing pin 28 being used as an adjusting tool;
  • the motor-specific control rod 37 is brought into the basic test position and blocked in this position, then a dummy pump 48 is inserted through the central opening 35 of the adjusting plate 32 the pump fitting 23 inserted and inserted with its fixed coupling part 50 into the mating coupling part 22 of the control rod 21, with the screws 37 loosened, the adjusting plate 32 is rotated into such a position that its fixing groove 33, which serves as a second adjustment aid, receives the fixing pin 52 of the dummy pump 43; Fixing pin 52 and coupling part 50 are now in the angle ⁇ marked fixed angular distance, which is also the basis of the setting of the fixing pin 28 serving as the first adjustment aid on the plug-in pump, in this position the setting plate 32 is fixed by tightening the screws 37 on the pump fitting 23 and then the dummy pump 48 is removed again;
  • the plug-in pump 11 is inserted into the pump fitting 23 and the delivery quantity adjustment member 19 is coupled to the motor-specific control rod 21 by inserting the coupling part 20 into the counter-coupling part 22 (see FIG. 1), at the same time the fixing pin 28 is in register with the fixing groove 33 brought the adjustment plate 32 and inserted into this groove; in this installed position, the plug-in pump 11 is fastened to the internal combustion engine by the fastening screws 26;
  • a limit stop for the control rod 21 is set to a full load position corresponding to or assigned to the test position and the blocking of the motor control rod 21 is released again.
  • the method described above can be largely automated, and the assembly of the plug-in pumps z. B. be carried out by robots, since no manual and skilled workers to perform alignment work is no longer necessary.
  • the second exemplary embodiment, shown in FIGS. 8 and 9, for carrying out an embodiment variant of the method according to the invention differs essentially only in a modified configuration of the adjusting arrangement 27A. The same parts are therefore identified by the same reference numerals, different parts by the capital letter A and new parts are provided with new reference numerals.
  • the adjusting bolt 29 is mounted in an adjustable manner and, as in the first exemplary embodiment, is provided on the end face with the fixing pin 28 forming the first adjusting aid.
  • This fixing pin 28 does not protrude on the drive side, as in the first exemplary embodiment, beyond a bearing surface 24a of the fastening flange 24A, but lies within a recess 55 which is set back parallel to the bearing surface 24a of the fastening flange 24A and is open radially towards the outside.
  • the adjustment plate 32A which has approximately the shape of a small washer, projects into this recess 55.
  • the fixing groove 33 forming the second adjustment aid it comprises the fixing pin 28 on two opposite sides and is fastened to the housing 10 of the internal combustion engine by means of a screw 37 on the flange surface 23a of the pump fitting 23.
  • the U-disk-shaped adjusting plate 32A is provided with an auxiliary means for aligning the mounting position of the adjusting plate 32A in addition to the fixing groove 33 which is open towards the plug-in pump 11A and a through opening 36 for the screw 37 used for fastening.
  • This aid is offset from the outside by two recesses 33 on both sides of the fixation groove 33, seen from the center of the pump, and formed recesses 56 symmetrical to the fixation groove.
  • These recesses 56 serve to accommodate position securing pins on the dummy pump, which is not shown but is constructed similarly to the dummy pump 48 in FIGS. 6 and 7.
  • a sealing washer 58 and one or more presetting adjusting washers 59 are inserted, the total thickness of which corresponding to the dimension c in FIG. 5 previously corresponding process step b was determined.
  • the thickness of these disks 58, 59 and the adjusting plate 32A and the height of the fixing pin 28 are coordinated with one another in such a way that there is always a play designated d in FIG. 8 between the adjusting plate 32A and the recess 56, and also between the end face of the fixing pin 28 and the flange surface 23a.
  • the depth dimension corresponding to the projection dimension UT is set by selecting the advance stroke adjusting disk 59 provided in the required number or with a suitable thickness dimension; Steps a, c, d and e are adopted unchanged; in step f, instead of the adjusting plate 32 covering the entire flange surface, the small U-shaped adjusting plate 32A is brought into the appropriate position by means of the dummy pump and screwed down with the screw 37; the process steps g and h again do not differ.
  • the plug-in pumps 11 and 11A installed according to the above-described method variants generally no longer need to be checked for full load setting after they have been installed, and the power setting of the internal combustion engine and checking the power are unnecessary when using the method according to the invention, or only one short functional test carried out.
  • the otherwise very complex equalization of the individual pump elements is also eliminated and the engine's control rod can be formed in one piece with the mating coupling parts for the delivery rate adjustment elements of the plug-in pumps.
  • the first-mentioned advantages can also be achieved with single-cylinder internal combustion engines, and even their control rod or their correspondingly designed control element (control lever) does not need to be adjusted or corrected for the basic setting after installation of the plug-in pump.
  • the invention also extends to pump nozzles inserted into the cylinder head of an internal combustion engine, which are driven by the engine's own camshaft and controlled via an engine's own control rod common to all pump nozzles, because the individual injection pumps which are assembled with the associated injection nozzle to form a unit also provide " Plug-in pumps ".

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

Abstract

Méthode avec laquelle une pompe à insertion à commande oblique (11) est logée avec un système de réglage (27) dans le carter de pompe (23) d'un moteur à combustion interne et permet d'assurer un débit constant pour toutes les pompes à insertion d'un moteur, sans qu'il soit nécessaire de corriger ce débit. L'élément de réglage étant fixé dans la position d'essai, on introduit la pompe à insertion dans le bloc d'essai et on la fait tourner jusqu'à ce que le débit corresponde à la quantité requise. Dans cette position de rotation on règle et fixe en place un ergot de blocage (28), maintenu dans la bride (24) de la pompe à insertion et se logeant dans un dégagement prévu sur le bloc d'essai. La tige de réglage (21) du moteur étant bloquée dans la position d'essai de base, une rainure de fixation (33) conçue pour recevoir l'ergot de blocage (28) d'une plaque de réglage (32) qui peut être fixée sur le logement de la pompe (23) est amenée grâce à une pompe factice, dans une position rotative correspondante. Après le retrait de la pompe factice, la pompe à insertion est fixée dans le logement de la pompe (23) du moteur à combustion interne à l'aide de l'ergot de blocage (28) qui est introduit dans la rainure de fixation (33). Le système de réglage (27) qui se compose de l'ergot de blocage (28) sur la bride de la pompe et la rainure de fixation (33) dans la plaque de réglage (32) permet également de refaire le réglage en cas d'erreurs ou de réparation.
EP86904103A 1985-07-20 1986-07-18 Methode d'installation d'une pompe a injection sur un moteur a combustion interne Expired EP0268584B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3525962 1985-07-20
DE3525962 1985-07-20
DE3622633 1986-07-05
DE19863622633 DE3622633A1 (de) 1985-07-20 1986-07-05 Verfahren zum anbau einer einspritzpumpe an eine brennkraftmaschine und zugehoerige brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0268584A1 true EP0268584A1 (fr) 1988-06-01
EP0268584B1 EP0268584B1 (fr) 1989-06-14

Family

ID=25834190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904103A Expired EP0268584B1 (fr) 1985-07-20 1986-07-18 Methode d'installation d'une pompe a injection sur un moteur a combustion interne

Country Status (6)

Country Link
US (1) US4829646A (fr)
EP (1) EP0268584B1 (fr)
JP (1) JPH0686851B2 (fr)
KR (1) KR940009684B1 (fr)
DE (2) DE3622633A1 (fr)
WO (1) WO1987000582A1 (fr)

Families Citing this family (29)

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Also Published As

Publication number Publication date
KR880700162A (ko) 1988-02-20
WO1987000582A1 (fr) 1987-01-29
JPS63500819A (ja) 1988-03-24
JPH0686851B2 (ja) 1994-11-02
EP0268584B1 (fr) 1989-06-14
DE3622633A1 (de) 1987-01-22
DE3663979D1 (en) 1989-07-20
KR940009684B1 (ko) 1994-10-15
US4829646A (en) 1989-05-16

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