ITMI20102082A1 - 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
- ITMI20102082A1 ITMI20102082A1 IT002082A ITMI20102082A ITMI20102082A1 IT MI20102082 A1 ITMI20102082 A1 IT MI20102082A1 IT 002082 A IT002082 A IT 002082A IT MI20102082 A ITMI20102082 A IT MI20102082A IT MI20102082 A1 ITMI20102082 A1 IT MI20102082A1
- Authority
- IT
- Italy
- Prior art keywords
- tubular body
- cylinder
- pumping unit
- unit according
- fuel
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims description 27
- 238000005086 pumping Methods 0.000 title claims description 25
- 238000002485 combustion reaction Methods 0.000 title claims description 16
- 230000009469 supplementation Effects 0.000 title 1
- 239000002283 diesel fuel Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000012761 high-performance material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010959 steel Substances 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- 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
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1013—Adaptations or arrangements of distribution members the members being of the poppet valve type
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/127—Mounting of a cylinder block in a casing
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
- F04B53/125—Reciprocating valves
- F04B53/129—Poppet valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
DESCRIZIONE DESCRIPTION
del brevetto per invenzione industriale dal titolo: of the patent for industrial invention entitled:
“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 o una pompa elettrica 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 or an electric pump adapted to feed fuel to the piston pump.
La pompa a pistoni comprende almeno un cilindro ricavato nel corpo pompa; un pistone impegnato in maniera scorrevole nel cilindro; un canale di aspirazione del combustibile nel cilindro; una valvola di aspirazione per controllare selettivamente l’alimentazione di combustibile dal canale di aspirazione al cilindro; un canale di mandata del combustibile dal cilindro al motore a combustione interna; ed una valvola di mandata per controllare selettivamente l’alimentazione di combustibile dal cilindro al motore a combustione interna. The piston pump comprises at least one cylinder formed in the pump body; a piston slidably engaged in the cylinder; a fuel intake channel in the cylinder; an intake valve to selectively control the supply of fuel from the intake channel to the cylinder; a fuel delivery channel from the cylinder to the internal combustion engine; and a delivery valve to selectively control the fuel supply from the cylinder to the internal combustion engine.
Il pistone viene spostato con un moto rettilineo alternativo lungo il cilindro da un dispositivo di azionamento comprendente una molla interposta tra il corpo pompa ed il pistone per spostare il pistone con una corsa di aspirazione del combustibile nel cilindro, ed un albero di trasmissione, che si estende attraverso il corpo pompa trasversalmente ad un asse longitudinale del pistone, e presenta una porzione eccentrica atta a spostare il pistone con una corsa di mandata del combustibile al motore a combustione interna. The piston is moved with a reciprocating rectilinear motion along the cylinder by an actuation device comprising a spring interposed between the pump body and the piston to move the piston with an intake stroke of the fuel in the cylinder, and a transmission shaft, which is it extends through the pump body transversely to a longitudinal axis of the piston, and has an eccentric portion adapted to move the piston with a delivery stroke of the fuel to the internal combustion engine.
La valvola di aspirazione comprende un corpo valvola alloggiato nel corpo pompa; un organo di bloccaggio avvitato nel corpo pompa per bloccare il corpo valvola nel corpo pompa stesso; un otturatore a spillo impegnato in maniera scorrevole nel corpo valvola per spostarsi tra una posizione di apertura ed una posizione di chiusura del canale di aspirazione; ed una molla, che à ̈ interposta tra il corpo valvola ed una piastra di arresto montata per interferenza sull’otturatore a spillo, ed à ̈ atta a spostare l’otturatore a spillo nella sua posizione di chiusura. The suction valve comprises a valve body housed in the pump body; a locking member screwed into the pump body to lock the valve body into the pump body itself; a needle shutter slidably engaged in the valve body to move between an open position and a closed position of the intake channel; and a spring, which is interposed between the valve body and a stop plate mounted by interference on the needle plug, and is able to move the needle plug into its closed position.
I gruppi di pompaggio noti del tipo sopra descritto, benché supercollaudati, comportano la realizzazione nel corpo pompa di una sede di alloggiamento del corpo valvola e di una sede di accoppiamento filettata per il citato organo di bloccaggio, richiedono l’utilizzo di materiali ad elevate prestazioni per la realizzazione dell’intero corpo pompa, e sono, quindi, sono relativamente complessi, costosi, e pesanti. The known pumping units of the type described above, although super-tested, involve the realization in the pump body of a seat for housing the valve body and a threaded coupling seat for the aforementioned locking member, require the use of suitable materials high performance for the construction of the entire pump body, and are, therefore, relatively complex, expensive, and heavy.
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; e Figure 1 is a schematic sectional view, with parts removed for clarity, of a preferred embodiment of the pumping unit of the present invention; And
la figura 2 Ã ̈ una vista prospettica schematica di un particolare del gruppo di pompaggio della figura 1. Figure 2 is a schematic perspective view of a detail of the pumping unit of Figure 1.
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; una pompa 3 a pistoni atta ad alimentare il combustibile al citato motore a combustione interna (non illustrato); ed una pompa di alimentazione (non illustrata), nella fattispecie una pompa ad ingranaggi o una pompa elettrica, atta ad alimentare il combustibile alla pompa 3. The pumping unit 1 comprises a pump body 2; a piston pump 3 adapted to supply fuel to the aforementioned internal combustion engine (not shown); and a feed pump (not shown), in this case a gear pump or an electric pump, adapted to feed fuel to the pump 3.
La pompa 3 comprende almeno una unità 4 di alimentazione alloggiata in una cavità 5, la quale à ̈ ricavata nel corpo pompa 2, presenta un asse 6 longitudinale, si apre verso l’esterno in corrispondenza di una parete 7 di estremità del corpo pompa 2 sostanzialmente piana e perpendicolare all’asse 6, e comprende una porzione 8 ristretta ed una porzione 9 allargata collegate fra loro da uno spallamento 10 sostanzialmente piano ed ortogonale all’asse 6 stesso. The pump 3 comprises at least one supply unit 4 housed in a cavity 5, which is obtained in the pump body 2, has a longitudinal axis 6, opens outwards at a wall 7 at the end of the pump body 2 substantially flat and perpendicular to axis 6, and comprises a narrow portion 8 and an enlarged portion 9 connected to each other by a shoulder 10 which is substantially flat and perpendicular to the axis 6 itself.
Secondo quanto illustrato nelle figure 1 e 2, l’unità 4 comprende un corpo 11 tubolare, il quale presenta una forma sostanzialmente ad L, à ̈ realizzato in un materiale ad elevate prestazioni, preferibilmente ma non necessariamente in un acciaio per cuscinetti del tipo 100Cr6, e comprende, a sua volta, un primo condotto 12, che à ̈ montato nella cavità 5 coassialmente all’asse 6, sporge all’esterno del corpo pompa 2, e presenta una estremità libera limitata da una parete 13 anulare sostanzialmente piana ed ortogonale all’asse 6 stesso. According to what is illustrated in Figures 1 and 2, the unit 4 comprises a tubular body 11, which has a substantially L-shape, is made of a high-performance material, preferably but not necessarily of a steel for bearings of the type 100Cr6, and comprises, in turn, a first duct 12, which is mounted in the cavity 5 coaxially to the axis 6, protrudes outside the pump body 2, and has a free end limited by a substantially annular wall 13 plane and orthogonal to axis 6 itself.
Il corpo 11 à ̈ accoppiato in maniera scorrevole al corpo pompa 2, e presenta una flangia 14 anulare di arresto, la quale sporge radialmente verso l’esterno dalla superficie esterna del condotto 12, impegna la porzione 9, ed à ̈ disposta a contatto dello spallamento 10. The body 11 is coupled in a sliding manner to the pump body 2, and has an annular stop flange 14, which protrudes radially outwards from the external surface of the duct 12, engages the portion 9, and is arranged in contact shoulder 10.
Il corpo 11 comprende, inoltre, un secondo condotto 15, il quale si estende all’esterno del corpo pompa 2, e presenta un asse 16 longitudinale trasversale all’asse 6. The body 11 also comprises a second duct 15, which extends outside the pump body 2, and has a longitudinal axis 16 transversal to the axis 6.
Il condotto 12 definisce un cilindro 17 di alimentazione, il quale à ̈ impegnato in maniera scorrevole da un pistone 18 montato all’interno del cilindro 17 coassialmente all’asse 6, e comunica con un canale 19 di mandata definito dal condotto 15 e provvisto di una valvola 20 di mandata a sfera di tipo noto. The duct 12 defines a supply cylinder 17, which is slidingly engaged by a piston 18 mounted inside the cylinder 17 coaxially to the axis 6, and communicates with a delivery duct 19 defined by the duct 15 and provided with a ball delivery valve 20 of a known type.
Il corpo 11 à ̈ bloccato assialmente contro lo spallamento 10 da un coperchio 21 di chiusura sostanzialmente cilindrico, il quale presenta una forma a tazza con concavità rivolta verso il corpo pompa 2, à ̈ calzato sull’estremità del corpo 11 sporgente all’esterno del corpo pompa 2, ed à ̈ accoppiato in maniera angolarmente fissa al corpo 11 per l’impegno del condotto 15 in una feritoia 22 ricavata radialmente attraverso il coperchio 21 stesso. The body 11 is axially blocked against the shoulder 10 by a substantially cylindrical closing cover 21, which has a cup shape with a concavity facing the pump body 2, it is fitted on the extremity of the body 11 protruding from the exterior of the pump body 2, and is coupled in an angularly fixed manner to the body 11 for the engagement of the duct 15 in a slot 22 obtained radially through the cover 21 itself.
Il coperchio 21 à ̈ provvisto di una flangia 23 anulare di accoppiamento disposta a contatto della parete 7, à ̈ bloccato assialmente contro il corpo pompa 2 tramite una pluralità di viti di serraggio (non illustrate) avvitate nel corpo pompa 2 attraverso la flangia 23 stessa, à ̈ accoppiato a tenuta di fluido con la parete 13 tramite l’interposizione di una guarnizione 24 anulare sostanzialmente coassiale all’asse 6, ed à ̈ realizzato, preferibilmente ma non necessariamente, in un materiale con prestazioni inferiori a quelle del materiale del corpo 11. The cover 21 is provided with an annular coupling flange 23 arranged in contact with the wall 7, it is axially blocked against the pump body 2 by means of a plurality of clamping screws (not shown) screwed into the pump body 2 through the flange 23 itself. , Is fluid-tight coupled with the wall 13 by means of the interposition of an annular gasket 24 substantially coaxial to the axis 6, and is made, preferably but not necessarily, in a material with performance lower than that of the material body 11.
Il coperchio 21 à ̈ limitato assialmente da una parete 25 di fondo, la quale si estende perpendicolarmente all’asse 6, ed à ̈ disposta ad una distanza determinata dalla parete 13 per consentire al coperchio 21 di definire, unitamente al corpo 11, una camera 26 cilindrica, che à ̈ sostanzialmente coassiale all’asse 6, chiude assialmente il cilindro 17, e comprende, a partire dalla parete 25, una porzione 27 ristretta ed una porzione 28 allargata. The lid 21 is axially limited by a bottom wall 25, which extends perpendicularly to the axis 6, and is arranged at a determined distance from the wall 13 to allow the lid 21 to define, together with the body 11, a cylindrical chamber 26, which is substantially coaxial to axis 6, axially closes cylinder 17, and comprises, starting from wall 25, a restricted portion 27 and an enlarged portion 28.
La camera 26 e, quindi, il cilindro 17 comunicano, tramite l’interposizione di una valvola 29 di aspirazione alloggiata all’interno della camera 26 stessa, con un canale 30 di aspirazione del combustibile comprendente un tratto 31 di ingresso ricavato attraverso il corpo pompa 2 ed un tratto 32 di uscita ricavato attraverso il coperchio 21. The chamber 26 and, therefore, the cylinder 17 communicate, through the interposition of an intake valve 29 housed inside the chamber 26 itself, with a fuel intake channel 30 comprising an inlet section 31 obtained through the pump body 2 and an outlet section 32 obtained through the cover 21.
A questo proposito à ̈ opportuno precisare che la parete 7 e la flangia 23 sono accoppiate a tenuta di fluido fra loro tramite l’interposizione di una guarnizione 33 anulare coassiale al canale 30. In this regard, it should be pointed out that the wall 7 and the flange 23 are fluid-tight coupled to each other by means of the interposition of an annular gasket 33 coaxial to the channel 30.
La valvola 29 comprende un corpo valvola 34, il quale à ̈ alloggiato all’interno della porzione 28, presenta un diametro sostanzialmente pari al diametro della porzione 28, comunica idraulicamente con il tratto 32 del canale 30 e con il cilindro 17, ed à ̈ disposto a contatto della parete 13 tramite l’interposizione di un anello 35 metallico sostanzialmente coassiale all’asse 6; un otturatore 36 a spillo, che à ̈ montato attraverso il corpo valvola 34 coassialmente all’asse 6, à ̈ accoppiato in maniera scorrevole al corpo valvola 34 per spostarsi tra una posizione di apertura ed una posizione di chiusura del canale 30, e porta collegata una piastra 37 di arresto fissata per interferenza sull’otturatore 36 ortogonalmente all’asse 6; ed una molla 38 interposta tra il corpo valvola 34 e la piastra 37 per spostare, e normalmente mantenere, l’otturatore 36 nella sua posizione di chiusura. The valve 29 comprises a valve body 34, which is housed inside the portion 28, has a diameter substantially equal to the diameter of the portion 28, communicates hydraulically with the portion 32 of the channel 30 and with the cylinder 17, and is It is arranged in contact with the wall 13 by means of the interposition of a metal ring 35 substantially coaxial to the axis 6; a needle shutter 36, which is mounted through the valve body 34 coaxially to the axis 6, is slidingly coupled to the valve body 34 to move between an open position and a closed position of the channel 30, and carries connected a stop plate 37 fixed by interference on shutter 36 orthogonally to axis 6; and a spring 38 interposed between the valve body 34 and the plate 37 to move, and normally maintain, the shutter 36 in its closed position.
I pistoni 18 delle unità 4 di alimentazione vengono spostati con un moto rettilineo alternativo lungo i relativi cilindri 17 da un dispositivo 39 di azionamento di tipo noto comprendente un albero di trasmissione (non illustrato), il quale à ̈ montato per ruotare attorno ad un proprio asse longitudinale perpendicolare agli assi 6, e presenta, per ciascun pistone 18, una rispettiva porzione eccentrica disposta a contatto del pistone 18 stesso. The pistons 18 of the feeding units 4 are moved with a reciprocating rectilinear motion along the relative cylinders 17 by an actuation device 39 of a known type comprising a transmission shaft (not shown), which is mounted to rotate around its own longitudinal axis perpendicular to the axes 6, and has, for each piston 18, a respective eccentric portion arranged in contact with the piston 18 itself.
Il dispositivo 39 comprende, inoltre, per ciascun pistone 18, una rispettiva molla 40, la quale à ̈ calzata sul relativo corpo 11 coassialmente al relativo asse 6, à ̈ interposta tra la flangia 14 ed una piastra 41 di arresto montata sul pistone 18 perpendicolarmente all’asse 6 stesso, ed à ̈ atta a spostare, e normalmente mantenere, il pistone 18 a contatto della relativa porzione eccentrica dell’albero di trasmissione (non illustrato). The device 39 also comprises, for each piston 18, a respective spring 40, which is fitted on the relative body 11 coaxially to the relative axis 6, is interposed between the flange 14 and a stop plate 41 mounted on the piston 18 perpendicularly to the axis 6 itself, and is able to move, and normally maintain, the piston 18 in contact with the relative eccentric portion of the transmission shaft (not shown).
A seguito della rotazione dell’albero di trasmissione (non illustrato) attorno al proprio asse longitudinale, ciascun pistone 18 viene spostato dalla relativa molla 40 con una corsa di andata di aspirazione del combustibile nel relativo cilindro 17 e dalla relativa porzione eccentrica dell’albero di trasmissione (non illustrato) con una corsa di ritorno di compressione del combustibile contenuto nel cilindro 17 stesso. Following the rotation of the transmission shaft (not shown) around its own longitudinal axis, each piston 18 is moved by the relative spring 40 with a forward stroke of the fuel intake in the relative cylinder 17 and by the relative eccentric portion of the transmission shaft (not shown) with a compression return stroke of the fuel contained in the cylinder 17 itself.
Le unità 4 di alimentazione sono relativamente semplici e leggere, consentono al coperchio 21 di bloccare direttamente il corpo valvola 34 all’interno della camera 26, e permettono di differenziare i materiali di costruzione del corpo 11 e del coperchio 21. The supply units 4 are relatively simple and light, they allow the cover 21 to directly lock the valve body 34 inside the chamber 26, and allow to differentiate the construction materials of the body 11 and the cover 21.
Inoltre, le unità 4 di alimentazione possono essere pre-assemblate e montate, quindi, in maniera relativamente semplice e rapida nel corpo pompa 2. Furthermore, the power supply units 4 can be pre-assembled and mounted, therefore, relatively simply and quickly in the pump body 2.
Secondo una variante non illustrata, il corpo 11 tubolare viene eliminato e sostituito con due corpi tubolari distinti e definenti uno il condotto 12 e l’altro il condotto 15. According to a variant not shown, the tubular body 11 is eliminated and replaced with two distinct tubular bodies, one defining the duct 12 and the other the duct 15.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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ITMI2010A002082A IT1403245B1 (en) | 2010-11-10 | 2010-11-10 | PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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ITMI2010A002082A IT1403245B1 (en) | 2010-11-10 | 2010-11-10 | PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
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ITMI20102082A1 true ITMI20102082A1 (en) | 2012-05-11 |
IT1403245B1 IT1403245B1 (en) | 2013-10-17 |
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ITMI2010A002082A IT1403245B1 (en) | 2010-11-10 | 2010-11-10 | PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT306442B (en) * | 1970-08-13 | 1973-04-10 | Friedmann & Maier Ag | Injection pump |
FR2640324A3 (en) * | 1988-12-13 | 1990-06-15 | Omap Off Mecc Alta Precisione | High-pressure injection pump mainly for a diesel engine |
EP1013922A2 (en) * | 1998-12-24 | 2000-06-28 | Isuzu Motors Limited | Variable-delivery high-pressure fuel pump |
EP1275845A2 (en) * | 2001-07-13 | 2003-01-15 | Robert Bosch Gmbh | High pressure fuel pump |
EP1277949A1 (en) * | 2000-04-18 | 2003-01-22 | Toyota Jidosha Kabushiki Kaisha | High-pressure pump and assembly structure of high-pressure pump |
US20030099563A1 (en) * | 2001-11-29 | 2003-05-29 | Yasutaka Utsumi | Fuel injection pump having one-way valve for supplying fuel into pressurizing chamber |
US20030175137A1 (en) * | 2002-03-15 | 2003-09-18 | Hiroshi Inoue | High pressure supply pump with lifter guide and method of manufacturing the lifter guide |
US20040105763A1 (en) * | 2002-12-03 | 2004-06-03 | Denso Corporation | High pressure fuel supply pump |
-
2010
- 2010-11-10 IT ITMI2010A002082A patent/IT1403245B1/en active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT306442B (en) * | 1970-08-13 | 1973-04-10 | Friedmann & Maier Ag | Injection pump |
FR2640324A3 (en) * | 1988-12-13 | 1990-06-15 | Omap Off Mecc Alta Precisione | High-pressure injection pump mainly for a diesel engine |
EP1013922A2 (en) * | 1998-12-24 | 2000-06-28 | Isuzu Motors Limited | Variable-delivery high-pressure fuel pump |
EP1277949A1 (en) * | 2000-04-18 | 2003-01-22 | Toyota Jidosha Kabushiki Kaisha | High-pressure pump and assembly structure of high-pressure pump |
EP1275845A2 (en) * | 2001-07-13 | 2003-01-15 | Robert Bosch Gmbh | High pressure fuel pump |
US20030099563A1 (en) * | 2001-11-29 | 2003-05-29 | Yasutaka Utsumi | Fuel injection pump having one-way valve for supplying fuel into pressurizing chamber |
US20030175137A1 (en) * | 2002-03-15 | 2003-09-18 | Hiroshi Inoue | High pressure supply pump with lifter guide and method of manufacturing the lifter guide |
US20040105763A1 (en) * | 2002-12-03 | 2004-06-03 | Denso Corporation | High pressure fuel supply pump |
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IT1403245B1 (en) | 2013-10-17 |
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