ITMI20101830A1 - PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE - Google Patents
PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE Download PDFInfo
- Publication number
- ITMI20101830A1 ITMI20101830A1 IT001830A ITMI20101830A ITMI20101830A1 IT MI20101830 A1 ITMI20101830 A1 IT MI20101830A1 IT 001830 A IT001830 A IT 001830A IT MI20101830 A ITMI20101830 A IT MI20101830A IT MI20101830 A1 ITMI20101830 A1 IT MI20101830A1
- Authority
- IT
- Italy
- Prior art keywords
- external surface
- pumping unit
- piston
- unit according
- pump body
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims description 18
- 238000005086 pumping Methods 0.000 title claims description 18
- 238000002485 combustion reaction Methods 0.000 title claims description 9
- 230000009469 supplementation Effects 0.000 title 1
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000002283 diesel fuel Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0439—Supporting or guiding means for the pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0408—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0435—Arrangements for disconnecting the pistons from the actuated cam
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
DESCRIZIONE DESCRIPTION
“GRUPPO DI POMPAGGIO PER ALIMENTARE COMBUSTIBILE, PREFERIBILMENTE GASOLIO, AD UN MOTORE A COMBUSTIONE INTERNA†⠀ œPUMPING GROUP TO FEED FUEL, PREFERABLY DIESEL OIL, TO AN INTERNAL COMBUSTION ENGINEâ €
La presente invenzione à ̈ relativa ad un gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna. The present invention relates to a pumping unit for feeding fuel, preferably diesel oil, to an internal combustion engine.
In particolare, la presente invenzione à ̈ relativa ad un gruppo di pompaggio del tipo comprendente un corpo pompa; una pompa a pistoni atta ad alimentare il combustibile ad un motore a combustione interna; ed una pompa ad ingranaggi atta ad alimentare il combustibile alla pompa a pistoni. In particular, the present invention relates to a pumping unit of the type comprising a pump body; a piston pump adapted to supply fuel to an internal combustion engine; and a gear pump adapted to feed fuel to the piston pump.
La pompa a pistoni comprende una pluralità di cilindri, i quali sono ricavati nel corpo pompa, sono uniformemente distribuiti attorno ad un foro centrale ricavato attraverso il corpo pompa, e presentano rispettivi assi longitudinali sostanzialmente perpendicolari ad un asse longitudinale del foro centrale stesso. The piston pump comprises a plurality of cylinders, which are obtained in the pump body, are uniformly distributed around a central hole obtained through the pump body, and have respective longitudinal axes substantially perpendicular to a longitudinal axis of the central hole itself.
I cilindri sono impegnati in maniera scorrevole da rispettivi pistoni mobili con un moto rettilineo alternativo lungo i relativi cilindri sotto la spinta di un dispositivo di azionamento comprendente, normalmente, un albero di trasmissione, che si estende attraverso il foro centrale del corpo pompa, e presenta una porzione eccentrica impegnata in maniera girevole, tramite l’interposizione di un cuscinetto di rotolamento, attraverso un anello poligonale. The cylinders are engaged in a sliding manner by respective movable pistons with a reciprocating rectilinear motion along the relative cylinders under the thrust of an actuation device comprising, normally, a transmission shaft, which extends through the central hole of the pump body, and has an eccentric portion rotatably engaged, through the interposition of a rolling bearing, through a polygonal ring.
L’anello poligonale à ̈ limitato esternamente da una superficie cilindrica provvista di una pluralità di facce piane, che sono pari in numero al numero dei cilindri, sono disposte a contatto, ciascuna, di un relativo pistone tramite l’interposizione di un relativo bicchierino estendentesi attorno al pistone stesso, e vengono spostate dalla rotazione della citate porzione eccentrica lungo rispettivi percorsi circolari mantenendosi sempre parallele a se stesse. The polygonal ring is limited externally by a cylindrical surface provided with a plurality of flat faces, which are equal in number to the number of cylinders, each arranged in contact with a relative piston through the interposition of a relative cup extending around the piston itself, and are moved by the rotation of the aforementioned eccentric portion along respective circular paths, always keeping parallel to themselves.
Ciascun bicchierino presenta una forma a tazza, e comprende una parete di fondo ortogonale ad un proprio asse longitudinale, una parete laterale cilindrica accoppiata in maniera scorrevole al corpo pompa, ed un bordo di raccordo anulare per collegare fra loro la parete di fondo e la parete laterale. Il bordo di raccordo à ̈ limitato da una superficie esterna di forma sostanzialmente troncoconica collegata con le superfici esterne della parete di fondo e della parete laterale in corrispondenza di rispettivi spigoli vivi di forma circolare. Each cup has a cup shape, and comprises a bottom wall orthogonal to its own longitudinal axis, a cylindrical side wall slidingly coupled to the pump body, and an annular connecting edge to connect the bottom wall and the wall together. lateral. The connecting edge is limited by an external surface of substantially truncated cone shape connected with the external surfaces of the back wall and of the side wall in correspondence with respective sharp edges of circular shape.
Il dispositivo di azionamento comprende, inoltre, per ciascun cilindro, una rispettiva molla interposta tra il corpo pompa ed il relativo pistone per spostare, e normalmente mantenere, il pistone a contatto del relativo bicchierino ed il bicchierino a contatto dell’anello poligonale. The actuation device also comprises, for each cylinder, a respective spring interposed between the pump body and the relative piston to move, and normally maintain, the piston in contact with the relative cup and the cup in contact with the polygonal ring.
A seguito della rotazione dell’albero di trasmissione, ciascun pistone ed il relativo bicchierino vengono spostati dalla relativa molla con una corsa di andata di aspirazione del combustibile nel relativo cilindro e vengono spostati dall’assieme definito dalla porzione eccentrica dell’albero di trasmissione e dall’anello poligonale con una corsa di ritorno di compressione del combustibile contenuto nel relativo cilindro stesso. Following the rotation of the transmission shaft, each piston and the relative cup are moved by the relative spring with a forward stroke of the fuel in the relative cylinder and are moved by the assembly defined by the eccentric portion of the shaft. transmission and by the polygonal ring with a compression return stroke of the fuel contained in the relative cylinder itself.
L’attrito tra le pareti laterali dei bicchierini ed il corpo pompa e tra le pareti di fondo dei bicchierini e l’anello poligonale viene contrastato da un lubrificante, generalmente costituito dallo stesso combustibile, alimentato tra il corpo pompa ed i bicchierini e tra i bicchierini e l’anello poligonale. The friction between the side walls of the cups and the pump body and between the bottom walls of the cups and the polygonal ring is opposed by a lubricant, generally made up of the same fuel, fed between the pump body and the cups and between the glasses and the polygonal ring.
Dal momento che, a causa delle tolleranze di lavorazione e delle forze di attrito relativamente elevate tra i bicchierini e l’anello poligonale, le facce piane dell’anello poligonale non riescono a mantenersi sempre perfettamente parallele alle pareti di fondo dei relativi bicchierini, i gruppi di pompaggio noti del tipo sopra descritto presentano alcuni inconvenienti principalmente discendenti dal fatto che, in particolare all’inizio della corsa di ritorno dei pistoni, il contatto tra le facce piane dell’anello poligonale ed i citati spigoli vivi dei corrispondenti bicchierini può comportare la rottura del sottile strato di lubrificante presente e, quindi, il danneggiamento e l’usura dei bicchierini e dell’anello poligonale. Since, due to the machining tolerances and the relatively high frictional forces between the cups and the polygonal ring, the flat faces of the polygonal ring cannot always remain perfectly parallel to the bottom walls of the relative cups, known pumping units of the type described above have some drawbacks mainly due to the fact that, in particular at the beginning of the return stroke of the pistons, the contact between the flat faces of the polygonal ring and the aforementioned sharp edges of the corresponding cups it can cause the breakage of the thin layer of lubricant present and, therefore, damage and wear of the cups and the polygonal ring.
Scopo della presente invenzione à ̈ di realizzare un gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna che sia esente dagli inconvenienti sopra descritti e che sia di semplice ed economica attuazione. The object of the present invention is to provide a pumping unit for feeding fuel, preferably diesel oil, to an internal combustion engine which is free from the drawbacks described above and which is simple and economical to implement.
Secondo la presente invenzione viene realizzato un gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna come rivendicato nelle rivendicazioni allegate. According to the present invention, a pumping unit is provided for feeding fuel, preferably diesel oil, to an internal combustion engine as claimed in the attached claims.
La presente invenzione verrà ora descritta con riferimento ai disegni annessi, che ne illustrano un esempio di attuazione non limitativo, in cui: The present invention will now be described with reference to the attached drawings, which illustrate a non-limiting example of embodiment, in which:
la figura 1 Ã ̈ una vista schematica in sezione, con parti asportate per chiarezza, di una preferita forma di attuazione del gruppo di pompaggio della presente invenzione; Figure 1 is a schematic sectional view, with parts removed for clarity, of a preferred embodiment of the pumping unit of the present invention;
la figura 2 Ã ̈ una sezione longitudinale di un particolare della figura 1; e figure 2 is a longitudinal section of a detail of figure 1; And
la figura 3 Ã ̈ una sezione longitudinale di una variante del particolare della figura 2. figure 3 is a longitudinal section of a variant of the detail of figure 2.
Con riferimento alla figura 1, con 1 Ã ̈ indicato, nel suo complesso, un gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna (non illustrato). With reference to Figure 1, 1 indicates, as a whole, a pumping unit for feeding fuel, preferably diesel oil, to an internal combustion engine (not shown).
Il gruppo di pompaggio 1 comprende un corpo pompa 2 provvisto di un foro 3 centrale presentante un asse 4 longitudinale determinato; una pompa 5 a pistoni atta ad alimentare il combustibile al citato motore a combustione interna (non illustrato); ed una pompa ad ingranaggi nota e non illustrata atta ad alimentare il combustibile alla pompa 5. The pumping unit 1 comprises a pump body 2 provided with a central hole 3 having a determined longitudinal axis 4; a piston pump 5 adapted to supply fuel to the aforementioned internal combustion engine (not shown); and a known and not illustrated gear pump adapted to supply fuel to the pump 5.
La pompa 5 comprende una pluralità di cilindri 6 (nella fattispecie tre cilindri 6), i quali sono ricavati nel corpo pompa 2, sono uniformemente distribuiti attorno all’asse 4, presentano rispettivi assi 7 longitudinali sostanzialmente perpendicolari all’asse 4, e si affacciano al foro 3. The pump 5 comprises a plurality of cylinders 6 (in this case three cylinders 6), which are obtained in the pump body 2, are uniformly distributed around the axis 4, have respective longitudinal axes 7 substantially perpendicular to the axis 4, and overlook hole 3.
I cilindri 6 sono impegnati in maniera scorrevole da rispettivi pistoni 8, i quali sono montati all’interno dei relativi cilindri 6 coassialmente ai relativi assi 7, e vengono spostati con un moto rettilineo alternativo lungo i relativi cilindri 6 da un dispositivo 9 di azionamento. The cylinders 6 are engaged in a sliding manner by respective pistons 8, which are mounted inside the relative cylinders 6 coaxially to the relative axes 7, and are moved with a reciprocating rectilinear motion along the relative cylinders 6 by an actuation device 9 .
Il dispositivo 9 comprende, nella fattispecie, un albero 10 di trasmissione, il quale si estende attraverso il foro 3, à ̈ montato per ruotare, rispetto al corpo pompa 2, attorno ad un proprio asse 11 longitudinale parallelo all’asse 4, e presenta una porzione 12 eccentrica, che à ̈ coassiale all’asse 4, ed à ̈ impegnata in maniera girevole, tramite l’interposizione di un cuscinetto 13 di rotolamento, attraverso un anello 14 poligonale. The device 9 comprises, in this case, a transmission shaft 10, which extends through the hole 3, is mounted to rotate, with respect to the pump body 2, around its own longitudinal axis 11 parallel to the axis 4, and it has an eccentric portion 12, which is coaxial to axis 4, and is rotatably engaged, through the interposition of a rolling bearing 13, through a polygonal ring 14.
L’anello 14 à ̈ limitato esternamente da una superficie 15 cilindrica provvista di una pluralità di facce 16 piane, le quali sono pari in numero al numero dei cilindri 6, e sono mobili, a seguito della rotazione della porzione 12 eccentrica attorno all’asse 11, lungo rispettivi percorsi circolari mantenendosi sempre parallele a se stesse. The ring 14 is limited externally by a cylindrical surface 15 provided with a plurality of flat faces 16, which are equal in number to the number of cylinders 6, and are mobile, following the rotation of the eccentric portion 12 around the ™ axis 11, along respective circular paths always keeping parallel to themselves.
Secondo quanto illustrato nelle figure 1 e 2, ciascuna faccia 16 à ̈ disposta a contatto di un relativo pistone 8 tramite l’interposizione di un bicchierino 17, il quale presenta una forma a tazza con concavità rivolta verso il pistone 8, si estende attorno al pistone 8, e consente di ridurre le forze di taglio generate sul pistone 8 dallo scorrimento dell’anello 14. According to what is illustrated in Figures 1 and 2, each face 16 is arranged in contact with a relative piston 8 by means of the interposition of a cup 17, which has a cup shape with a concavity facing the piston 8, extending around to the piston 8, and allows to reduce the shear forces generated on the piston 8 by the sliding of the ring 14.
Il bicchierino 17 presenta un asse 18 longitudinale, e comprende una parete 19 di fondo circolare perpendicolare all’asse 18 ed una parete 20 laterale cilindrica, la quale si estende attorno all’asse 18, à ̈ accoppiata in maniera scorrevole al corpo pompa 2, ed à ̈ collegata alla parete 19 da un bordo 21 di raccordo anulare, che si estende attorno all’asse 18, e presenta una sezione trasversale limitata da una superficie 22 esterna arrotondata. The bowl 17 has a longitudinal axis 18, and comprises a circular bottom wall 19 perpendicular to the axis 18 and a cylindrical side wall 20, which extends around the axis 18, is coupled in a sliding manner to the pump body 2, and is connected to the wall 19 by an annular connecting edge 21, which extends around the axis 18, and has a cross section limited by a rounded outer surface 22.
Nella fattispecie, la superficie 22 presenta una forma circolare, à ̈ tangente ad una superficie 23 esterna della parete 19, à ̈ tangente ad una superficie 24 esterna della parete 20, presenta una rugosità superficiale relativamente ridotta analogamente alla superficie 23, e presenta, inoltre, un raggio R di curvatura sostanzialmente pari alla differenza tra il raggio R1 della superficie 24 ed il raggio R2 della superficie 23. In this case, the surface 22 has a circular shape, it is tangent to an external surface 23 of the wall 19, it is tangent to an external surface 24 of the wall 20, it has a relatively reduced surface roughness similar to the surface 23, and also has , a radius R of curvature substantially equal to the difference between the radius R1 of the surface 24 and the radius R2 of the surface 23.
Il dispositivo 9 di azionamento comprende, inoltre, per ciascun pistone 8, una rispettiva molla 25, la quale à ̈ montata coassialmente al relativo asse 7, à ̈ interposta tra il corpo pompa 2 ed una piastra 26 di appoggio montata sul pistone 8 ortogonalmente al relativo asse 7, ed à ̈ atta a spostare, e normalmente mantenere, il pistone 8 a contatto del relativo bicchierino 17 ed il bicchierino 17 a contatto della relativa faccia 16 dell’anello 14. The actuation device 9 also comprises, for each piston 8, a respective spring 25, which is mounted coaxially to the relative axis 7, is interposed between the pump body 2 and a support plate 26 mounted on the piston 8 orthogonally to the relative axis 7, and is able to move, and normally maintain, the piston 8 in contact with the relative cup 17 and the cup 17 in contact with the relative face 16 of the ring 14.
A seguito della rotazione dell’albero 10 di trasmissione attorno all’asse 11, ciascun pistone 8 viene spostato dalla relativa molla 25 con una corsa di andata di aspirazione del combustibile nel relativo cilindro 6 e dalla porzione 12 eccentrica dell’albero 10 di trasmissione, dall’anello 14, e dal relativo bicchierino 17 con una corsa di ritorno di compressione del combustibile contenuto nel relativo cilindro 6 stesso. Following the rotation of the transmission shaft 10 around the axis 11, each piston 8 is moved by the relative spring 25 with a forward stroke of the fuel intake in the relative cylinder 6 and by the eccentric portion 12 of the shaft 10 of transmission, from the ring 14, and from the relative bowl 17 with a compression return stroke of the fuel contained in the relative cylinder 6 itself.
La variante illustrata nella figura 3 differisce da quanto illustrato nella figura 2 unicamente per il fatto che, in essa, la superficie 22 presenta una forma circolare, à ̈ tangente alla superficie 23, ed interseca la superficie 24 in modo tale che la tangente alla superficie 22 nel punto di intersezione tra le superfici 22 e 24 sia inclinata di un angolo α diverso da 0° e da 90° rispetto al piano della superficie 23. L’angolo α à ̈, preferibilmente ma non necessariamente, almeno pari a 10°, mentre il raggio R à ̈ pari a The variant illustrated in Figure 3 differs from that illustrated in Figure 2 only in that, in it, the surface 22 has a circular shape, is tangent to the surface 23, and intersects the surface 24 in such a way that the tangent to the surface 22 at the point of intersection between surfaces 22 and 24 is inclined by an angle Î ± different from 0 ° and 90 ° with respect to the plane of the surface 23. The angle Î ± à ̈, preferably but not necessarily, at least equal to 10 °, while the radius R is equal to
R1 - R 2R = .R1 - R 2R =.
2 sena cos a 2 without cos a
La conformazione circolare e la ridotta rugosità superficiale della superficie 22 esterna della sezione trasversale del bordo 21 di raccordo garantisce l’integrità dello strato di lubrificante presente tra il bicchierino 17 e la relativa faccia 16, ed impedisce l’usura dell’anello 14 poligonale e del bicchierino 17. The circular shape and the reduced surface roughness of the external surface 22 of the cross section of the connecting edge 21 guarantees the integrity of the lubricant layer present between the cup 17 and the relative face 16, and prevents wear of the ring 14 polygonal and cup 17.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2010A001830A IT1402008B1 (en) | 2010-10-07 | 2010-10-07 | PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2010A001830A IT1402008B1 (en) | 2010-10-07 | 2010-10-07 | PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ITMI20101830A1 true ITMI20101830A1 (en) | 2012-04-08 |
| IT1402008B1 IT1402008B1 (en) | 2013-08-28 |
Family
ID=43737965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ITMI2010A001830A IT1402008B1 (en) | 2010-10-07 | 2010-10-07 | PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1402008B1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10141178A (en) * | 1996-11-12 | 1998-05-26 | Denso Corp | High-pressure fuel pump |
| US20030175137A1 (en) * | 2002-03-15 | 2003-09-18 | Hiroshi Inoue | High pressure supply pump with lifter guide and method of manufacturing the lifter guide |
| DE10313745A1 (en) * | 2003-03-27 | 2004-10-07 | Robert Bosch Gmbh | High pressure pump for IC engine fuel injection device e.g. for automobile, with hydrodynamic lubrication of bearings for ring segments operating pistons of pump elements |
| DE102008000824A1 (en) * | 2008-03-26 | 2009-10-01 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
| WO2010015448A1 (en) * | 2008-08-05 | 2010-02-11 | Robert Bosch Gmbh | High-pressure pump for feeding fuel to an internal combustion engine |
| WO2010026463A1 (en) * | 2008-09-04 | 2010-03-11 | Toyota Jidosha Kabushiki Kaisha | Roller lifter, roller lifter production method and liquid pump |
-
2010
- 2010-10-07 IT ITMI2010A001830A patent/IT1402008B1/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10141178A (en) * | 1996-11-12 | 1998-05-26 | Denso Corp | High-pressure fuel pump |
| US20030175137A1 (en) * | 2002-03-15 | 2003-09-18 | Hiroshi Inoue | High pressure supply pump with lifter guide and method of manufacturing the lifter guide |
| DE10313745A1 (en) * | 2003-03-27 | 2004-10-07 | Robert Bosch Gmbh | High pressure pump for IC engine fuel injection device e.g. for automobile, with hydrodynamic lubrication of bearings for ring segments operating pistons of pump elements |
| DE102008000824A1 (en) * | 2008-03-26 | 2009-10-01 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
| WO2010015448A1 (en) * | 2008-08-05 | 2010-02-11 | Robert Bosch Gmbh | High-pressure pump for feeding fuel to an internal combustion engine |
| WO2010026463A1 (en) * | 2008-09-04 | 2010-03-11 | Toyota Jidosha Kabushiki Kaisha | Roller lifter, roller lifter production method and liquid pump |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1402008B1 (en) | 2013-08-28 |
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