FR2839750A1 - Diesel injection pump driving system connects pump drive spindle to camshaft connected to cylinder head, drive gear fixed to camshaft meshing with driven gear connected to drive spindle - Google Patents
Diesel injection pump driving system connects pump drive spindle to camshaft connected to cylinder head, drive gear fixed to camshaft meshing with driven gear connected to drive spindle Download PDFInfo
- Publication number
- FR2839750A1 FR2839750A1 FR0206071A FR0206071A FR2839750A1 FR 2839750 A1 FR2839750 A1 FR 2839750A1 FR 0206071 A FR0206071 A FR 0206071A FR 0206071 A FR0206071 A FR 0206071A FR 2839750 A1 FR2839750 A1 FR 2839750A1
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- FR
- France
- Prior art keywords
- drive
- gear
- camshaft
- bore
- injection pump
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- 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.)
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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
- F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
- F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
contact interieur (35).interior contact (35).
_,!_ ,!
DISPOSITIF D'ENTRAINEMENT D'UNE POMPE A DEVICE FOR DRIVING A PUMP
INJECTION DIESELDIESEL INJECTION
La presente invention concerne les enkamements de pompe par arbre a cames et plus particulierement les dispositifs d'entranement de pompe a injection, associant un axe d'entramement de cette pompe a un arbre a cames The present invention relates to pump casings by camshaft and more particularly to injection pump drive devices, associating a drive shaft of this pump with a camshaft
lie a la culasse d'un moteur.linked to the cylinder head of an engine.
o Selon une conception connue, les entranements de ce type presentent une coaxialite entre l'axe d'entranement et l'arbre a cames. Cette conception impose a la pompe a injection une vitesse de rotation egale a celle de l'arbre a cames; et done une vitesse de 1a pornpe rnoinre que celle necessaire pour la o According to a known design, the drives of this type have a coaxiality between the drive axis and the camshaft. This design imposes on the injection pump a rotation speed equal to that of the camshaft; and therefore a speed of porn less than that necessary for the
bonne alimentation du moteur.good engine power.
La presente invention propose un dispositif d'enkanement permettant de multiplier la vitesse de rotation de la pompe. Ce dispositif est caracterise en ce qu'un engrenage menant, solidaire de l'arbre a cames, est en prise avec un The present invention provides a fitting device for increasing the speed of rotation of the pump. This device is characterized in that a driving gear, integral with the camshaft, is engaged with a
engrenage mene, lie a l'axe d'entrainement de la pompe a injection. driven gear, linked to the drive axis of the injection pump.
Les engrenages de ce dispositif vent lubrifies par l'intermediaire d'un The gears of this device are lubricated through a
o graissellr dispose dans un flan cle la clalasse. o graissellr has the clalasse in a blank.
Un autre but de ['invention est de permetke que l'axe d'entrainement de la pompe dtinjection ne subisse ni effort axial, ni- effort radial, et que Another object of the invention is to allow the drive axis of the injection pump to undergo neither axial force, nor radial force, and
l'alignement a respecter lors du montage ne soit pas difficile a obtenir. the alignment to be observed during assembly is not difficult to obtain.
Un premier mode de realisation de ['invention propose un joint, dispose :5 enke l'axe d'enkamement et l'engrenage mene, est forme d'un alesage cenkal et d'au moins deux encoches a sa peripherie, diamekalement opposees par rapport a l'alesage. D'une part l'axe d'entranement de la pompe a injechon presente une exkemite de forme complementaire a l'alesage cenkal, les > dimensions de l'exkemite etant, selon une premiere direction radiale, equivalentes a celles de l'alesage et, selon une seconde direction radiale perpendiculaire, inferieures a celles de cet alesage. D?autre part l'engrenage mene presente sur une de ces faces, au moins deux doigts de forme complementaires respectivement aux au moins deux encoches, les dimensions des doigts etant, selon la seconde direction radiale, equivalentes a celles respectivement des encoches et, selon la premiere direction radiale perpendiculaire, inferieures a celles de ces encoches. L'engrenage mene est monte sur un palier porte par un axe, cet axe presentant un epaulement venant o se loger dans un contre- percage realisee sur l'engrenage et une partie filetee A first embodiment of the invention proposes a seal, has: 5 enke the fitting axis and the driven gear, is formed by a central bore and at least two notches at its periphery, diamekally opposed by compared to the bore. On the one hand, the drive axis of the injechon pump has an end of a shape complementary to the central bore, the> dimensions of the end being, in a first radial direction, equivalent to those of the bore and , in a second perpendicular radial direction, lower than those of this bore. On the other hand the gear driven present on one of these faces, at least two fingers of complementary shape respectively to at least two notches, the dimensions of the fingers being, in the second radial direction, equivalent to those of the notches respectively, and according to the first radial direction perpendicular, lower than those of these notches. The driven gear is mounted on a bearing carried by an axis, this axis having a shoulder coming to be housed in a counterbore made on the gear and a threaded part.
collaborant avec un alesage realisee sur la culasse. collaborating with a bore made on the cylinder head.
Le dispositif d'entranement selon ['invention peut, dans le but de firer profit des pompes a injection selon leur conception initiale, presenter une liaison entre i7engrenage mene et i5axe d5entramement realisee par des cannelures, auquel cas un flasque solidaire de l'engrenage mene est en appui The drive device according to the invention can, in order to take advantage of the injection pumps according to their initial design, present a connection between the driven gear and the axially made by splines, in which case a flange secured to the driven gear is in support
contre la face de la pompe a injection, ou par un clavetage. against the face of the injection pump, or by keying.
Les engrenages mene et menant presents dans les differents modes de realisation de ['invention doivent repondre a des caracteristiques de fonctionnement a bruit reduit. Selon la presente invention, l'utilisation The driving and driving gears present in the different embodiments of the invention must respond to operating characteristics with reduced noise. According to the present invention, the use
o d'engrenages a denture helicodale permet au dispositif un tel fonctionnement. o helical teeth gears allow the device such an operation.
La face de ltengrenage mene, dans la direction de laqueile ['effort induit par la The face of the gear leads in the direction of the wing the force induced by the
rotation est oriente, doit alors etre en appui contre la face de la culasse. rotation is oriented, must then be in abutment against the face of the cylinder head.
D'autres caracteristiques et avantages de ['invention apparaltront a la Other characteristics and advantages of the invention will become apparent from the
lecture de la description detaillee qui suit pour la comprehension de laquelle reading of the detailed description which follows for the understanding of which
on se reportera aux dessins annexes dans lesquels: - la figure 1 est une vue en coupe d'un mecanisme d'entramement selon reference is made to the accompanying drawings in which: - Figure 1 is a sectional view of a drive mechanism according to
['invention selon un premier mode de realisation. [invention according to a first embodiment.
- la figure 2 est une vue en perspective d'un mecanisme d'entramement - Figure 2 is a perspective view of a drive mechanism
selon la figure 1.according to figure 1.
- la figure 3 est une vue en coupe d'un mecanisme d'entramement selon - Figure 3 is a sectional view of a drive mechanism according to
['invention selon un second mode de realisation. [invention according to a second embodiment.
Un engrenage 6 est fixe a l'extremite d'un arbre a cames 7 loge dans la culasse 8 d'un moteur selon une conception connue. L'engrenage 6, dit A gear 6 is fixed at the end of a camshaft 7 housed in the cylinder head 8 of an engine according to a known design. Gear 6 says
engrenage menant, vient entra^ner un engrenage mene 5. leading gear, comes to drive a driving gear 5.
Selon un premier mode de realisation presente aux figures 1 et 2, l'engrenage 5 est monte a rotation autour d'un palier 11 porte par un axe 4. Cet axe 4 presente d'une extremite a l'autre un epaulement 10, un palier 11, et une o base 12 dont une partie 13 est filetee. Le palier 11 est insere dans un alesage According to a first embodiment presented in Figures 1 and 2, the gear 5 is rotatably mounted around a bearing 11 carried by an axis 4. This axis 4 has from one end to the other a shoulder 10, a bearing 11, and a base 12 of which a part 13 is threaded. The bearing 11 is inserted in a bore
coaxial 51 de l'engrenage 5 et l'epaulement 10 vient se loger dans un contre- coaxial 51 of the gear 5 and the shoulder 10 is housed in a counter
per,cage 52 realise coaxialement a l'alesage 17 sur ltengrenage 5 et de diametre superieur a l'alesage 51. L'epaisseur de l'epaulement 10 est inferieure a la profondeur du contre-per,cage 52? afin que, lorsque 1?engrenage 5 est monte sur l'axe 4, l'epaulement 10 ne soit pas saillant par rapport a la face de per, cage 52 produced coaxially to the bore 17 on the gear 5 and of diameter greater than the bore 51. The thickness of the shoulder 10 is less than the depth of the counterper, cage 52? so that, when the gear 5 is mounted on the axis 4, the shoulder 10 is not protruding from the face of
l'engrenage 5.the gear 5.
Cet engrenage 5 est fixe sur une culasse 8 par l'axe 4, dont la partie This gear 5 is fixed on a cylinder head 8 by the axis 4, the part of which
filetee 13 vient se visser dans un alesage 19 realise d-ans la culasse 8. threaded 13 is screwed into a bore 19 made in years the cylinder head 8.
L'engrenage 5 est alors maintenu axialement d'une part par l'epaulement 10 de l'axe 4 et d'autre part par un flan 20 de la culasse 8. La lubrification de l'engrenage mene 5 et de l'engrenage menant 6 est alors initiee par un trou de The gear 5 is then held axially on the one hand by the shoulder 10 of the axis 4 and on the other hand by a blank 20 of the cylinder head 8. The lubrication of the gear drives 5 and of the driving gear 6 is then initiated by a hole
graissage 18 realisee dans la culasse 8 proche de l'alesage 19. lubrication 18 carried out in the cylinder head 8 near the bore 19.
- Une pompe d'injection 1 comporte un axe d'entranement 2 dont l'extremite libre vient s'inserer dans une ouverture 33 d'un joint 3 dont la fonction est de rattraper l'alignement d'un montage, par exemple un joint de type Oldham. L' ouverture 33 et l' extremite de l' axe 2 ont des formes complementaires et des caracteristiques de grandeur telles que ['assemblage permet un jou jl horizontal. Le. joint 3 presente egalement 2 encoches 34 disposees de part et d'autre de ltouverture 33 dans un sens perpendiculaire au sens du jeu cite plus haut. Ces encoches recoivent deux doigts 54 portes par l'engrenage 5, les encoches 34 et les doigis 54 ayant des formes complementaires et des caracteristiques de grandeur telles que ['assemblage permet un jou j2 vertical, perpendiculaire au jeu jl. L'engrenage 5 forme ainsi s avec le joint 3 et l'axe 2 de la pompe 1 un systeme entranement parfaitement decouple. L' engrenage 6 entrane l' engrenage 5 avec un rapport de multiplication ou de demultiplication bien defini. A titre d'exemple, le rapport de multiplication de la vitesse de l'arbre porte par le second engrenage peut 8tre o de 5i6. Un train de deux engrenages permet de choisir le regime de rotation de la pompe d'injection en fonction du regime de rotation de l'arbre a cames et - An injection pump 1 has a drive shaft 2, the free end of which is inserted into an opening 33 of a seal 3 whose function is to catch up with the alignment of an assembly, for example a seal Oldham type. The opening 33 and the end of the axis 2 have complementary shapes and characteristics of size such that the assembly allows a horizontal play. The. joint 3 also has 2 notches 34 arranged on either side of the opening 33 in a direction perpendicular to the direction of play mentioned above. These notches receive two fingers 54 carried by the gear 5, the notches 34 and the fingertips 54 having complementary shapes and characteristics of size such that the assembly allows a vertical play j2, perpendicular to the play jl. The gear 5 thus forms with the seal 3 and the axis 2 of the pump 1 a perfectly decoupled drive system. The gear 6 drives the gear 5 with a well defined multiplication or demultiplication ratio. By way of example, the multiplication ratio of the speed of the shaft carried by the second gear can be 0 or 5i6. A train of two gears makes it possible to choose the rotation speed of the injection pump according to the rotation speed of the camshaft and
d'utiliser ainsi des pompes a l'encombrement moindre. to use pumps with less bulk.
Le systeme d'entramement tel que defini ci-dessus permet done une souplesse du systeme dentramement non soumis a des effUrts radiaux ou axiaux, l' axe 2 de la pompe d'injection 1 subissant alors uniquement le couple d'entramement. Selon un deuxieme mode de realisation presente a la figure 3, une pompe d'injection 1 est fixee a la culasse 8 d'un moteur et comporte un axe d'entramement 2 dont l'extremite presente des cannelures 23. L'engrenage mene 5 entrane en rotation l'axe d'entramement 2 par l'intermediaire de ces cannelures 23. L'engrenage 5 est alors arrCte en translation d'une part par un appui contre la face 20 de la culasse et d'autre part par un appui contre la paroi 22 de la pompe d'injection 1, par l'intermediaire d'un flasque 21, solidaire de l' engrenage 5. Ce mode de realisation presente l' avantage de s ' adapter a 2s differents types de pompe d'injection. Selon le type de pompe d'injection utilisee, il sera compris que la liaison entre l'axe d'entramement 2 et The entramement system as defined above therefore allows flexibility of the dentramement system not subjected to radial or axial stresses, the axis 2 of the injection pump 1 then undergoing only the entrainment torque. According to a second embodiment presented in FIG. 3, an injection pump 1 is fixed to the cylinder head 8 of an engine and comprises a drive pin 2, the end of which has grooves 23. The gear drives 5 rotates the entrainment axis 2 by means of these grooves 23. The gear 5 is then stopped in translation on the one hand by a support against the face 20 of the cylinder head and on the other hand by a support against the wall 22 of the injection pump 1, by means of a flange 21, integral with the gear 5. This embodiment has the advantage of adapting to 2s different types of injection pump . Depending on the type of injection pump used, it will be understood that the connection between the entrainment axis 2 and
l'engrenage mene 5 pourra 8tre realisee par exemple par une liaison a clavette. the driven gear 5 could be made for example by a key connection.
Dans les deux modes de realisation non limitatifs decrits ci dessus, les In the two nonlimiting embodiments described above, the
engrenages utilises 5 et 6 peuvent 8tre de nature differente. Par exemple, des engrenages a denture helicodale peuvent etre utilises afin de reduire les bruits de fonctionnement. Dans ce cas, le sens de la denture helicodale est alors choisi de telle sorte que ['effort induit par la rotation s'effectue sur le flan 20 de la enlasse 8 car l'alimentation en huile est realisee par l'intermediaire d'un s trou de graissage 18 usinee dans le flan 20 et permet ainsi une lubrification gears used 5 and 6 can be of different nature. For example, helical gears can be used to reduce operating noise. In this case, the direction of the helical toothing is then chosen so that the force induced by the rotation is effected on the blank 20 of the bundle 8 because the oil supply is carried out by means of a s lubrication hole 18 machined in the blank 20 and thus allows lubrication
appropriee de la face de l'engrenage la plus sollicitee. suitable for the face of the most stressed gear.
L'invention n'est nullement limitee au mode de realisation decrit et The invention is in no way limited to the embodiment described and
illustre qui n'a ete donne qu'a titre d'exemple. illustrated which has been given only as an example.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0206071A FR2839750B1 (en) | 2002-05-17 | 2002-05-17 | DEVICE FOR DRIVING A DIESEL INJECTION PUMP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0206071A FR2839750B1 (en) | 2002-05-17 | 2002-05-17 | DEVICE FOR DRIVING A DIESEL INJECTION PUMP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2839750A1 true FR2839750A1 (en) | 2003-11-21 |
| FR2839750B1 FR2839750B1 (en) | 2005-07-15 |
Family
ID=29286570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0206071A Expired - Fee Related FR2839750B1 (en) | 2002-05-17 | 2002-05-17 | DEVICE FOR DRIVING A DIESEL INJECTION PUMP |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2839750B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008079186A1 (en) * | 2006-12-22 | 2008-07-03 | Kohler Co. | System and method for lubricating power transmitting elements |
| US8312858B2 (en) | 2006-12-22 | 2012-11-20 | Kohler Co. | System and method for lubricating power transmitting elements |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE579859C (en) * | 1931-10-03 | 1933-07-01 | Robert Bosch Akt Ges | Fuel injection pump |
| CH326307A (en) * | 1953-12-28 | 1957-12-15 | Fried Krupp Motoren Und Kraftw | Coupling for injection pumps |
| US4142498A (en) * | 1977-01-17 | 1979-03-06 | Caterpillar Tractor Co. | Fuel injection pump timing mechanism |
| US4363310A (en) * | 1980-07-03 | 1982-12-14 | General Motors Corporation | Diesel engine with blowby scavenging |
| DE10051977A1 (en) * | 2000-10-20 | 2002-05-02 | Daimler Chrysler Ag | Drive device for high pressure pump of fuel injection valve has transmission formed between toothed wheels on pump input shaft and on camshaft |
-
2002
- 2002-05-17 FR FR0206071A patent/FR2839750B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE579859C (en) * | 1931-10-03 | 1933-07-01 | Robert Bosch Akt Ges | Fuel injection pump |
| CH326307A (en) * | 1953-12-28 | 1957-12-15 | Fried Krupp Motoren Und Kraftw | Coupling for injection pumps |
| US4142498A (en) * | 1977-01-17 | 1979-03-06 | Caterpillar Tractor Co. | Fuel injection pump timing mechanism |
| US4363310A (en) * | 1980-07-03 | 1982-12-14 | General Motors Corporation | Diesel engine with blowby scavenging |
| DE10051977A1 (en) * | 2000-10-20 | 2002-05-02 | Daimler Chrysler Ag | Drive device for high pressure pump of fuel injection valve has transmission formed between toothed wheels on pump input shaft and on camshaft |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008079186A1 (en) * | 2006-12-22 | 2008-07-03 | Kohler Co. | System and method for lubricating power transmitting elements |
| US7431006B2 (en) | 2006-12-22 | 2008-10-07 | Kohler Co. | System and method for lubricating power transmitting elements |
| US8312858B2 (en) | 2006-12-22 | 2012-11-20 | Kohler Co. | System and method for lubricating power transmitting elements |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2839750B1 (en) | 2005-07-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20080131 |