EP0791129B1 - Pompe a pistons - Google Patents
Pompe a pistons Download PDFInfo
- Publication number
- EP0791129B1 EP0791129B1 EP95939324A EP95939324A EP0791129B1 EP 0791129 B1 EP0791129 B1 EP 0791129B1 EP 95939324 A EP95939324 A EP 95939324A EP 95939324 A EP95939324 A EP 95939324A EP 0791129 B1 EP0791129 B1 EP 0791129B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- injection
- cylinder
- pump
- rod
- 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
Links
Images
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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/02—Pressure lubrication using lubricating pumps
-
- 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
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
Definitions
- the present invention relates to a piston pump intended for supply two independent liquid circuits, in particular the circuit injection system and the lubrication system of a internal combustion.
- a pump according to the closest prior art is known from US-A-2 980 023. It is more particularly a shaft pump crossing.
- the injection and lubrication functions are provided in such a way conventional by two separate devices.
- the fuel supply of each cylinder, or injection is provided by a so-called “injection” pump.
- this pump has a plurality of pistons driven by a camshaft and returned by springs. The recall by springs notoriously limit the maximum speed of the pump, absorbs a lot of power, a lot of noise and heating.
- injection and lubrication are provided by two separate bodies, which increases the total cost, and especially limits accessibility.
- the invention overcomes these drawbacks.
- the invention proposes to provide a pump ensuring jointly the oil pump functions for the lubrication of a engine and injection pump for the fuel supply of the same engine.
- the oil pump body and the injection pump body are arranged perpendicular to each other on the outside of the same fuel-filled crankcase that serves as a housing for the eccentric shaft which controls them together and with the same eccentric.
- the oil pump pistons are returned with compression springs while driving the pump pistons to injection is of the desmodromic type by means of a half-ring terminated at its ends by two internal, flat bearing elements, perpendicular to the movement of the piston and intended to be in contact with the eccentric.
- To each internal bearing corresponds a rod: for a side, it is the pump piston and for the other, it is a guide which ensures a perfect guidance of the monobloc assembly constituted by the half-ring and the two rods.
- the casing which receives all the pump bodies is in two parts: the first part constitutes the body of the housing and it serves as housing essentially to the eccentric and to the half-rings of the pistons of injection pump.
- the injection pistons are mounted at an angle since the opening and the position of the pistons is given by the housing injection piston guides in the housing. In contrast, the position of injection cylinders on the crankcase is given by the piston and from the guide.
- the hole in the housing around the injection piston has a very large clearance important to facilitate assembly and to allow the return of fuel not injected at the end of injection. This return takes place between the cylinder and the cylinder cover and through cross slots under the cylinder towards the hole in the housing around the piston.
- the cylinder covers are secured to the cylinders by two screws which are also used to make them turn slightly on themselves when the pump is set on the test bench, to have an injection start angularly identical on all pistons. This adjustment is made with the slightly unlocked cylinder head to release the cylinders which are tight without seal and the cylinder covers which are sealed with two seals toric.
- the cylinder head is a distribution part common to all cylinders injection. This arrangement ensures better rigidity and stability of all.
- each piston corresponds to a chamber conical which receives the ball valve with its return spring. The ball has its seat directly in the cylinder.
- two exits are machined to communicate with two injectors not shown which will in turn supply fuel to an engine cylinder or a explosion chamber. This arrangement is remarkable and the distribution is equal in volume on the two injectors with the same calibration of injection pressure.
- the flow rate of the injection pump is variable while the engine. This variation in flow is obtained by an inclined ramp in piston head. This inclined ramp closes an orifice on the cylinder of the piston. By rotating the piston on itself, we change the position of this filling and as a result, more or less fuel.
- the volume of fuel injected by a piston rise is between a closure, given by the inclined ramp which puts the pressurized volume, and an opening that leaks volume and which corresponds to the end of injection.
- the end of injection is a point that remains always fixed.
- the start of injection is a point that varies with the boom tilted; the more the closure is advanced in the rise of the piston, the more the the greater the flow, the more the closure is moved back in the rise of the piston the smaller the flow.
- This variation in flow is given by the rotation of the piston on its axis to change the position of the inclined ramp by relative to the light on the pump cylinder.
- This light controls by one end the start of injection and by the other end the end of injection.
- the rotation control of the pump piston on its axis is obtained by a needle which is welded on the half-ring of each piston.
- This needle is perfectly parallel at constant distance from the axis piston. This needle meshes with the rack which controls simultaneously all the pistons.
- the piston stroke of the injection pump is fixed and the variation in flow is given by varying the stroke of the piston the injection start point, as is the case with many pumps injection.
- the stroke of the oil pump pistons is the same as that of the pistons of the injection pump, but the flow is constant for a speed given.
- Injection pump flow variation is done by a regulator electronic which prevents motor runaway.
- the regulator which is placed on the side of the pump, in turn controls the rack which in turn controls the rotation of the pistons to make vary the flow.
- a speed regulator is fixed electronic.
- This regulator is placed behind the rack and they are connected between them by a finger which is part of the rack and which is housed in the regulator.
- the rack finger is perpendicular to the back of the rack and it is located in the middle of the back of the rack.
- This part of the stroke used for the injection is located on both sides other than the mid-stroke of the injection piston in the period when the speed linear is the largest.
- the rest of the race causes leaks which return to the housing by the light and the notches made on the injection pump piston cylinder.
- the free volume between the cylinder and the cylinder cover also participates in the fuel return circuit towards the casing and it is the role of the cylinder cover.
- the injection device itself is of the drawer type.
- the head of piston is cylindrical and hollow.
- the central hole connects the room compression with a radial hole which opens with the stroke of the piston in a light on the cylinder.
- On the piston head there is a ramp inclined which regulates the start of injection with regard to the same light on the cylinder.
- the end of injection is a fixed and identical point on all the cylinders and pistons.
- the start of injection is a moving point which varies with the position of the ramp inclined at the piston head.
- the pump Once the pump has been adjusted to the bench, it can be mounted directly at the end of the crankshaft on the engine.
- Figure 1 is a perspective view of the eccentric shaft fitted with injection pump pistons.
- Figure 2 is a side view of an injection pump piston.
- Figure 3 is a top view of the same piston.
- Figure 4 is an enlarged detail of the head of the piston rod.
- Figure 5 is a general section along a plane perpendicular to the eccentric shaft.
- the invention as briefly shown in Figure 1, combines an oil pump and an injection pump used especially in a diesel engine, the number of pistons of this pump not being limited.
- This set includes a through shaft (10) with eccentrics, a set of pistons (20) of oil pump of cylindrical shape with valves, and a set of pistons (30) of injection pump having in the general form of a half-ring (31), bearing at its ends a coaxial piston rod (32) and a guide (33).
- This set is trapped in a housing (15) not shown in Figure 1.
- the pistons (20) of oil pump slide inside cylinders (21) of oil pump oil fixed by a cylinder head (22) not shown in this figure.
- the injection pump piston guides slide inside the same housing (15).
- the injection pump piston rods (32) slide, in their end part, in a piston cylinder (35) surrounded by a cylinder cover (36) and surmounted by a cylinder head (37) not shown.
- FIG. 5 the different parts are better identified in the state assembled.
- the eccentric shaft (10) (11) comprising as shown (1) an eccentric (11).
- On one side of this eccentric supports a piston (20) of oil pump of a form hollow cylindrical, shown here in the position closest to the axis (12) rotation.
- This piston can slide inside a cylinder of piston (21), the sending being generated by the movement of the eccentric (11) and the return (in this maximum figure) is ensured by a spring (23).
- the chamber of this piston communicates with a cylinder head (22) equipped with valves not shown ensuring the passage of the oil according to the arrows referenced.
- the injection pump piston (30) moves in one direction perpendicular to the piston (20) of the oil pump.
- This piston (30) is composed of three distinct portions, namely a piston rod (32), a half-ring (31) for driving and connecting, and a guide (33).
- the rod piston (32) moves inside a piston cylinder (35) to compress a quantity of fuel and send it to the cylinder head (37) and up to the injector through a ball valve (38).
- This piston rod (32) is pierced with an axial hole (40) connected in the axis of the half-ring (31) by a radial hole (42) which opens onto the diameter of the piston and which controls the end of injection when it opens on the light (45) of the cylinder.
- the cylinder (35) is sealed with a cylinder cover (36). They are made integral by a screw (46). This screw (46) is used to change the cylinder position on the test bench and cylinder head (37) unlocked to obtain angularly the start of identical injection on all pistons to any one position of the rack.
- the cylinder cover (36) used to contain leaks at the end of injection towards the housing according to arrow F.
- the piston guide (33) is placed in the extension of the piston rod (32) on the other side of the eccentric shaft (10).
- This guide (33) is slidably mounted inside the casing (15).
- the guide (33) and the rod (32) are connected by a half-ring (31) whose internal shape cooperates with the eccentric (11).
- the eccentric (11) rotates
- the most eccentric part (13) of the shaft rotation axis (12) sometimes pushes the rod (32) to ensure the compression movement and sending the piston, sometimes pushes the guide (32) to ensure the recall of the piston.
- This advantageous form makes it possible to dispense with the use a return spring.
- the half-ring (31) carries on its outer face (50) a parallel axis (51) to the axis of movement of the piston and is moved away from the external face (50) of the half-ring (31) by two arms (52,53).
- This axis (51) is intended to be translated by a hollow (55) on the rack (56) driven by a speed regulator (57).
- a speed regulator 57
- the action of this rack (56) allows to rotate the piston (30) about its axis of alternating movement.
- the different pistons (30) placed along the eccentric shaft (11) are driven simultaneously by this speed regulator (57) and by the rack (56).
- the eccentric shaft (11) rotates on itself, causing a longitudinal reciprocating movement of the piston (20) oil pump which thus ensures its function.
- the injection pump piston (30) also describes reciprocating motion longitudinal which allows it to create fuel compression at level of the compression chamber which is under the ball valve placed on the cylinder (35).
- the head (41) of the piston rod (32) is opposite the light (45) located on the piston cylinder (35). So the whole housing, the space between the cylinder cover (36) and the cylinder (35), the light (45) of the cylinder and the interior (40) of the piston rod, are in communication, so at low pressure.
- the piston rod (32) begins to move the inside of the cylinder (35) and the head (41) of the rod leaves the light (45) of the piston cylinder (35). From that moment, the fuel trapped in the interior (40) of the piston rod and below the valve (38) is compressed.
- the flow rate is adjusted by rotating the piston rod (32) to inside the cylinder (35). This rotation is obtained by the action of the rack (56) on the half-ring (31) which causes the pivoting.
- an inclined ramp (47) is disposed at the head (41) of the rod (32) of piston. Depending on the angle of the piston (30) relative to the cylinder (35), and therefore in light (45), the instant of facing the ramp (47) and the light (45) will be variable. This allows the flow and advance to be adjusted injection.
- this set allows to have two pumps with only one drive, which reduces mass and cost of such an achievement.
- such a pump not using return springs for its injection function allows speeds significantly higher than all existing pumps currently, with less noise, less heating and less dissipated power.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- un seul carter dans lequel sont fixés les corps de pompes ;
- un seul arbre d'entraínement à excentriques pour commander les deux pompes ;
- un ensemble de pistons de pompe à huile, chaque piston de pompe à huile coopérant avec l'excentrique pour le mouvement en l'éloignant de l'arbre, et dont le rappel est assuré par un ressort ;
- un ensemble de pistons de pompe à injection dont le mouvement est perpendiculaire au mouvement des pistons de pompe à huile, chaque piston de pompe à injection coopérant pour la poussée et le rappel avec un excentrique au moyen d'un demi-anneau dont l'ouverture est dirigée vers le piston de pompe à huile correspondant, et les extrémités dudit demi-anneau comportant respectivement un guide de piston et une tige de piston, la tige et le guide étant placés dans le prolongement l'un de l'autre, chaque tige de piston coulissant dans un cylindre comportant une lumière qui définit le début d'injection avec une extrémité de la tige en forme de rampe inclinée et la fin d'injection avec un trou ménagé sur la tige.
- il comprend également une culasse d'injection monobloc reliant tous les cylindres par blocage sur le carter monobloc;
- chaque cylindre est mobile à l'intérieur d'un cache-cylindre dont la position par rapport au cylindre est réglée par une vis ;
- la culasse d'injection monobloc comporte en regard du cylindre une chambre de compression recevant le clapetet son ressort, et débouchant sur le départ de deux injecteurs ;
- la commande de variation du débit de la pompe à injection est obtenue par rotation des pistons sur leur axe, laquelle rotation est commandée depuis le dos des demi-anneaux sur lesquels deux bras usinés avec une gorge reçoivent une aiguille soudée parallèle à l'axe du piston, et apte à coopérer avec une crémaillère disposée parallèlement à l'arbre à excentriques ;
- le carter comprend un couvercle fixé sur le reste du carter et qui comporte une glissière et une lumière apte à laisser passer le doigt de la crémaillère vers le régulateur ;
- le doigt de la crémaillère est commandé par un régulateur de vitesse fixé sur le couvercle du carter;
- la rampe inclinée de la tige, le trou ménagé sur la tige, et la lumière du cylindre, sont disposés de telle manière que l'injection se fait de part et d'autre de la mi-course du piston, lorsque sa vitesse linéaire est la plus grande ;
- une des extrémités de l'arbre excentrique peut être connectée directement au vilebrequin, tandis que l'autre extrémité peut recevoir une poulie pour entraíner un équipement supplémentaire tel que pompe à eau ou alternateur.
- le logement de la crémaillère est très facile à usiner avec précision ;
- le montage de la crémaillère dans son logement et sur les aiguilles qui font la liaison entre la crémaillère et les pistons, se fait très facilement en fermant le carter avec quelques vis de blocage des deux parties du carter.
Claims (9)
- Dispositif constitué de deux pompes à pistons destinées à alimenter deux circuits liquides indépendants, notamment le circuit d'injection de carburant et le circuit d'huile pour moteurs à combustion interne, caractérisé en ce qu'il comprend :un seul carter (15) dans lequel sont fixés les corps de pompes;un seul arbre (10) d'entraínement à excentriques (11) pour commander les deux pompes ;un ensemble de pistons (20) de pompe à huile, chaque piston (20) de pompe à huile coopérant avec l'excentrique (11) pour le mouvement en l'éloignant de l'arbre (10), et dont le rappel est assuré par un ressort (23);un ensemble de pistons (30) de pompe à injection dont le mouvement est perpendiculaire au mouvement des pistons (20) de pompe à huile, chaque piston (30) de pompe à injection coopérant pour la poussée et le rappel avec un excentrique (11) au moyen d'un demi-anneau (31) dont l'ouverture est dirigée vers le piston (20) de pompe à huile correspondant, et les extrémités dudit anneau (31) comportant respectivement un guide (33) de piston et une tige (32) de piston, la tige et le guide étant placés dans le prolongement l'un de l'autre, chaque tige (32) de piston coulissant dans un cylindre (35) comportant une lumière (45) qui définit le début d'injection avec une extrémité de la tige (32) en forme de rampe inclinée (47) et la fin d'injection avec un trou (42) ménagé sur la tige (32).
- Dispositif selon la revendication 1, caractérisé en ce qu'il comprend également une culasse (37) d'injection monobloc reliant tous les cylindres (35) par blocage sur le carter (15) monobloc.
- Dispositif selon l'une des revendications 1 et 2, caractérisé en ce que chaque cylindre (35) est mobile à l'intérieur d'un cache-cylindre (36) dont la position par rapport au cylindre (35) est réglée par une vis (46).
- Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la culasse d'injection monobloc (37) comporte en regard du cylindre (35) une chambre de compression (27) recevant le clapet (38) et son ressort (39), et débouchant sur le départ (28) de deux injecteurs.
- Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que la commande de variation du débit de la pompe à injection est obtenue par rotation des pistons (30) sur leur axe, laquelle rotation est commandée depuis le dos des demi-anneaux(31) sur lesquels deux bras (52,53) usinés avec une gorge reçoivent une aiguille (51) soudée parallèle à l'axe du piston, et apte à coopérer avec une crémaillère (55) disposée parallèlement à l'arbre à excentriques (11).
- Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le carter (15) comprend un couvercle (16) fixé sur le reste du carter (15) et qui comporte une glissière pour la crémaillère et une lumière apte à laisser passer le doigt (55) de la crémaillère.
- Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le doigt de la crémaillère est commandé par un régulateur de vitesse (57) fixé sur le couvercle (16) du carter (15).
- Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que la rampe inclinée (47) de la tige, le trou (42) ménagé sur la tige (32), et la lumière (45) du cylindre (35), sont disposés de telle manière que l'injection se fait de part et d'autre de la mi-course du piston (30), lorsque sa vitesse linéaire est la plus grande.
- Dispositif selon l'une des revendications 1 à 8, caractérisé en ce qu'une des extrémités de l'arbre excentrique (10) peut être connectée directement au vilebrequin, tandis que l'autre extrémité peut recevoir une poulie pour entraíner un équipement supplémentaire tel que pompe à eau ou alternateur.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9413507 | 1994-11-07 | ||
FR9413507A FR2726606B1 (fr) | 1994-11-07 | 1994-11-07 | Pompe a pistons |
PCT/FR1995/001452 WO1996014496A1 (fr) | 1994-11-07 | 1995-11-06 | Pompe a pistons |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0791129A1 EP0791129A1 (fr) | 1997-08-27 |
EP0791129B1 true EP0791129B1 (fr) | 1998-09-02 |
Family
ID=9468696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95939324A Expired - Lifetime EP0791129B1 (fr) | 1994-11-07 | 1995-11-06 | Pompe a pistons |
Country Status (6)
Country | Link |
---|---|
US (1) | US6109894A (fr) |
EP (1) | EP0791129B1 (fr) |
CN (1) | CN1171833A (fr) |
DE (1) | DE69504531D1 (fr) |
FR (1) | FR2726606B1 (fr) |
WO (1) | WO1996014496A1 (fr) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2797658B1 (fr) | 1999-08-18 | 2002-08-23 | Snecma | Aube de turbine a profil ameliore |
DE10010945B4 (de) * | 2000-03-06 | 2004-07-22 | Robert Bosch Gmbh | Pumpe zur Versorgung eines Kraftstoffeinspritzsystems und einer hydraulischen Ventilsteuerung für Brennkraftmaschinen |
US6461117B2 (en) * | 2001-02-27 | 2002-10-08 | International Truck Intellectual Property Company, L.L.C. | Reversible volume oil pump |
ITMI20040032A1 (it) * | 2004-01-14 | 2004-04-14 | Piaggio & C Spa | Gruppo pompa carburante a portata variabile |
US7134846B2 (en) * | 2004-05-28 | 2006-11-14 | Stanadyne Corporation | Radial piston pump with eccentrically driven rolling actuation ring |
US20060127228A1 (en) * | 2004-12-09 | 2006-06-15 | Steve Rohring | High pressure open discharge pump system |
US8182246B1 (en) | 2004-12-09 | 2012-05-22 | Steve Rohring | High pressure open discharge pump system |
CN100445519C (zh) * | 2006-09-22 | 2008-12-24 | 郑国璋 | 多种燃料柴油机机油增压泵 |
US20080115770A1 (en) * | 2006-11-16 | 2008-05-22 | Merchant Jack A | Pump with torque reversal avoidance feature and engine system using same |
AT503752B1 (de) * | 2007-05-10 | 2008-10-15 | Avl List Gmbh | Brennkraftmaschine |
US8506267B2 (en) * | 2007-09-10 | 2013-08-13 | Schlumberger Technology Corporation | Pump assembly |
US8177536B2 (en) | 2007-09-26 | 2012-05-15 | Kemp Gregory T | Rotary compressor having gate axially movable with respect to rotor |
EP2184491A1 (fr) * | 2008-11-07 | 2010-05-12 | Delphi Technologies Holding S.à.r.l. | Tête de pompe pour ensemble de pompe à carburant |
CN102840128A (zh) * | 2012-09-10 | 2012-12-26 | 浙江大学 | 一种新型柱塞泵装置 |
WO2017048571A1 (fr) | 2015-09-14 | 2017-03-23 | Torad Engineering Llc | Dispositif d'hélice à aubes multiples |
CN105545549A (zh) * | 2016-01-28 | 2016-05-04 | 全椒县全动机械有限公司 | 一种带输油泵的双轴平衡单缸柴油机 |
CN107387387B (zh) * | 2017-08-30 | 2020-01-14 | 王湫锂 | 用于调量注入泵的低压变容流量调节方法及其调节机构 |
DE102019106531A1 (de) * | 2019-03-14 | 2020-09-17 | Baier & Köppel GmbH & Co. KG | Schmierstoffpumpe mit automatisch ankoppelnder Pumpeinheit und Verfahren zum Ankoppeln einer Pumpeinheit an eine Schmierstoffpumpe |
CN110425405A (zh) * | 2019-08-22 | 2019-11-08 | 江苏中科朗润智能科技有限公司 | 一种正反转高压油泵 |
CN112761842A (zh) * | 2020-12-29 | 2021-05-07 | 余姚市舒春机械有限公司 | 一种电喷柴油机一体式燃油泵 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR677993A (fr) * | 1928-08-13 | 1930-03-17 | Commande pour organes distributeurs animés d'un mouvement alternatif d'amplitude constante | |
US2059758A (en) * | 1932-10-11 | 1936-11-03 | Stearns Frank Ballon | Fuel pump for internal combustion engines |
US2697403A (en) * | 1949-06-06 | 1954-12-21 | Melba L Benedek | Hydraulic pump or motor |
US2980023A (en) * | 1957-10-07 | 1961-04-18 | Holley Carburetor Co | Fluid pumps |
US3385221A (en) * | 1967-03-07 | 1968-05-28 | Caterpillar Tractor Co | Multi-plunger engine fuel oil pump |
IT1086329B (it) * | 1977-05-26 | 1985-05-28 | Riva Calzoni Spa | Dispositivo di aggancio dei pistoni al rotore in un motore idraulico a pistoni radiali |
DE3700599C2 (de) * | 1987-01-10 | 1997-12-04 | Hugo Dipl Ing Fiedler | Einspritzvorrichtung für Dieselmotoren |
NL9301011A (nl) * | 1993-06-11 | 1995-01-02 | Applied Power Inc | Radiale-plunjerpomp. |
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1994
- 1994-11-07 FR FR9413507A patent/FR2726606B1/fr not_active Expired - Fee Related
-
1995
- 1995-11-06 WO PCT/FR1995/001452 patent/WO1996014496A1/fr active IP Right Grant
- 1995-11-06 DE DE69504531T patent/DE69504531D1/de not_active Expired - Lifetime
- 1995-11-06 CN CN95197272A patent/CN1171833A/zh active Pending
- 1995-11-06 EP EP95939324A patent/EP0791129B1/fr not_active Expired - Lifetime
- 1995-11-06 US US08/836,391 patent/US6109894A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1171833A (zh) | 1998-01-28 |
US6109894A (en) | 2000-08-29 |
FR2726606B1 (fr) | 1996-12-06 |
DE69504531D1 (de) | 1998-10-08 |
WO1996014496A1 (fr) | 1996-05-17 |
EP0791129A1 (fr) | 1997-08-27 |
FR2726606A1 (fr) | 1996-05-10 |
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