EP1657429A1 - A high-pressure pump for an internal-combustion engine - Google Patents
A high-pressure pump for an internal-combustion engine Download PDFInfo
- Publication number
- EP1657429A1 EP1657429A1 EP04425838A EP04425838A EP1657429A1 EP 1657429 A1 EP1657429 A1 EP 1657429A1 EP 04425838 A EP04425838 A EP 04425838A EP 04425838 A EP04425838 A EP 04425838A EP 1657429 A1 EP1657429 A1 EP 1657429A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- pump
- inlet mouth
- pumping element
- compartment
- 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.)
- Withdrawn
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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
Definitions
- the present invention relates to a high-pressure pump and to a compression assembly for an internal-combustion engine.
- fuel-injection systems comprising a tank for accumulation of the fuel and a system for compression of the fuel, which is fluidically connected to the tank itself and is provided so as to make the fuel available to the engine at a pre-set pressure.
- the compression system generally comprises a priming pump for the fuel contained in the tank and a compression assembly for making the fuel available, possibly via a common rail, to a plurality of injectors associated to respective combustion chambers of the engine itself.
- the compression assembly comprises a high-pressure pump and a distribution circuit set between the priming pump and the high-pressure pump to make the fuel available to the high-pressure pump itself.
- the high-pressure pump has a full body, generally made of cast iron, inside which there is made a hollow chamber, referred to as "guard".
- the guard houses: a plurality of pumping elements designed to compress the fuel; a portion of a shaft for controlling the pumping elements, which is, in turn, actuated by the internal-combustion engine or by an auxiliary motor; and a cam designed to transmit motion from the shaft to each pumping element.
- each pumping element has an intake valve for regulating delivery of the fuel to be compressed by the distribution circuit, and a discharge valve for exit of the compressed fuel to the engine.
- the fuel in addition to being compressed in the pumping elements, performs a further function of lubrication and cooling of the guard, shaft, cams and pumping elements.
- a pipe for delivery of the fuel coming from the distribution circuit traverses the full body of the high-pressure pump and connects the guard to a single inlet mouth made in the body itself.
- a plurality of pipes for supplying the respective pumping elements branches off from the delivery pipe, in a position between the inlet mouth and the guard, and extends as far as the respective pumping elements.
- the delivery pipe does not present any branching and is provided with a plurality of supply pipes extending from the guard as far as the respective pumping elements.
- each supply pipe is made within the body of the pump and supplies the corresponding pumping element through the corresponding intake valve.
- the fuel with reference to the embodiment according to which it reaches the pumping elements after having cooled the guard directly, may be contaminated by possible machining swarf and by impurities generated by the detachment of parts of members in mutual contact. In this circumstance, there could arise faulty operation of the high-pressure pump and the need for burdensome and frequent maintenance interventions.
- the purpose of the present invention is to provide a high-pressure pump for an internal-combustion engine, which is without the drawbacks linked to known high-pressure pumps and specified above.
- the present invention likewise relates to a compression assembly for an internal-combustion engine, as defined in Claim 3.
- the system 1 is illustrated only as far as is required for an understanding of the present invention, and basically comprises a tank 2 for the fuel and a compression system 3 fluidically connected to the tank 2 and designed to compress the fuel taken in from the tank 2 to make it available to the internal-combustion engine at the desired pressure.
- the compression system 3 comprises a priming pump 4 immersed in the tank 2 and a compression assembly 5 fluidically connected to the priming pump 4 for compressing the fuel to a pre-set pressure value.
- the compression assembly 5 comprises a circuit 6 for distribution of the fuel, fluidically connected to the priming pump 4, and a high-pressure pump 7, supplied by the circuit 6 and fluidically connected to the internal-combustion engine.
- the circuit 6 is preferably made of a material with low thermal conductivity, is fluidically set between the priming pump 4 and the high-pressure pump 7, and comprises: a pipe 9 connected to the priming pump 4; one or more supply pipes 8 (in the case in point illustrated two in number), for supplying the fuel to the high-pressure pump 7; and a pipe 10 for lubrication/cooling of the high-pressure pump 7 itself.
- the pipe 9 connects the priming pump 4 to a union tee 11, from which there depart the lubrication/cooling pipe 10 and a connector pipe 30.
- the connector pipe 30 terminates in a position corresponding to a further union tee 12, from which there depart the supply pipes 8, which extend as far as the high-pressure pump 7.
- the supply pipes 8 lie on the outside of the high-pressure pump 7 and are distinct from one another and from the lubrication/cooling pipe 10.
- a flow regulator 23 with fixed cross section is moreover provided on the lubrication/cooling pipe 10 in a position between the union tee 11 and the high-pressure pump 7.
- the aforesaid flow regulator 23 is sized on the basis of the design characteristics of the high-pressure pump 7 so as to enable passage of a flow of fuel sufficient to lubricate/cool the high-pressure pump 7.
- the high-pressure pump 7 comprises one or more pumping elements 13 (in the case in point two in number), provided for compressing the fluid to a pre-set pressure and actuated, via a cam 18, by a shaft 19 operatively connected to the internal-combustion engine.
- each pumping element 13 has an intake valve 14, for delivery of the fuel to be compressed coming from the corresponding supply pipe 8, and a discharge valve 15, for outflow of the compressed fuel to the internal-combustion engine.
- Each pumping element 13 is moreover connected, downstream of the discharge valve 15, to a respective delivery pipe 25 set at least in part on the outside of the high-pressure pump 7.
- the high-pressure pump 7 is defined by a full body 16, generally made of a thermoconductive material, made inside which is a cavity, referred to hereinafter by the term "guard" 17, which houses the pumping elements 13, the cam 18, and an end portion of the shaft 19.
- the guard 17 comprises a chamber 32 set in a centroidal position within the body 16 and designed to house the shaft 19, the cam 18, and a portion of the pumping elements 13.
- the guard 17 further comprises a pair of liners 33 communicating with the chamber 32, each of which defines a seat for the motion of a respective pumping element 13 and houses a return spring acting on the pumping element 13 itself.
- Each liner 33 is fluidically connected to the intake valve 14 and discharge valve 15 of the respective pumping element 13 via an intake pipe 34 and a discharge pipe 36, respectively, made within the body 16.
- the body 16 moreover has an inlet mouth 20 to enable delivery of the fuel for cooling and lubrication of the guard 17 through the lubrication/cooling pipe 10.
- the lubrication/cooling pipe 10 is in part housed within the body 16 and terminates in the guard 17.
- the body 16 further has one or more inlet mouths 21, in the case in point two in number, to enable, through the respective supply pipes 8, delivery of the fuel with which to supply the respective pumping elements 13, said fuel coming directly from an external source, in the specific case defined by the tank 2.
- each intake valve 14 connects a respective pumping element 13 to a respective supply pipe 8 and is set within the body 16 in the proximity of a respective inlet mouth 21.
- the body 16 has an outlet mouth 22 traversed by a recirculation pipe 24 connecting the guard 17 to the tank 2 and designed to take the fuel used for cooling and lubricating the guard 17 back into the tank 2 itself.
- the body 16 has one or more outlet mouths 27, in the case in point two in number, to enable, through respective delivery pipes 25, outflow of the fuel compressed by the respective pumping elements 13.
- each discharge valve 15 is fluidically set between the respective pumping element 13 and the respective delivery pipe 25, and is housed in the proximity of the respective outlet mouth 27 and within the body 16 of the high-pressure pump 7.
- the delivery pipes 25 converge in a union tee 29 from which there departs a single supply pipe 28 of the engine.
- the fuel present in the tank 2 is taken up and precompressed by the priming pump 4 and sent, via the circuit 6, to the high-pressure pump 7.
- the fuel at outlet from the priming pump 4 fills the pipe 9 and subsequently, via the union tee 11, according to proportions that are established by the flow regulator 23, flows partly into the lubrication/cooling pipe 10 and partly into the connector pipe 30.
- the fuel that flows into the lubrication/cooling pipe 10 accesses the body 16 of the high-pressure pump 7 through the inlet mouth 20 and then fills the guard 17, lubricating and cooling the pumping elements 13, the cam 18, and the shaft 19.
- the fuel that has cooled and lubricated the guard 17 fills the recirculation pipe 24 and, through the outlet mouth 22, leaves the body 16 and is sent back into the tank 2.
- each inlet mouth 21 feeds, through the respective intake valve 14, the respective pumping element 13 by which it is compressed up to a given pressure.
- the compressed fuel is discharged, through the respective discharge valve 15, from each pumping element 13, and leaves the body 16 via the respective outlet mouths 27, filling the respective delivery pipes 25.
- the fuel that flows into each delivery pipe 25, through the union tee 29, is collected in the supply pipe 28 of the internal-combustion engine.
- the fuel is at a level of temperature similar to that present in the tank 2 and presents a non-whirling motion.
- the fuel is supplied to the intake valves 14 relatively "cold", i.e., not subjected to any heating due to the preliminary passage through the high-pressure pump 7.
- the efficiency of said pump is therefore optimal in so far as it does not undergo any decrease due to the high temperature of the fuel at inlet to the intake valves 14 and to the presence of whirling motion of the fuel itself.
- the fuel that is to be compressed in the pumping elements 13 is not contaminated by any possible machining swarf or by impurities present in the guard 17.
- the circuit 6 could be made of a material that is not thermoinsulating and connected to the high-pressure pump 7 via thermoinsulating connection means.
- circuit 6 could be made of a material that is not thermoinsulating and constrained to one or more intermediate elements set at a sufficient distance from the high-pressure pump 7 as to contain heating of the fuel prior to intake into the pump 7 itself.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- The present invention relates to a high-pressure pump and to a compression assembly for an internal-combustion engine.
Known in the field of internal-combustion engines are fuel-injection systems comprising a tank for accumulation of the fuel and a system for compression of the fuel, which is fluidically connected to the tank itself and is provided so as to make the fuel available to the engine at a pre-set pressure. - In particular, the compression system generally comprises a priming pump for the fuel contained in the tank and a compression assembly for making the fuel available, possibly via a common rail, to a plurality of injectors associated to respective combustion chambers of the engine itself.
- Operation of the aforesaid systems envisages that the priming pump will take in fuel from the tank and make it available at a low pressure to the compression assembly for a further compression that brings the fuel to an optimal pressure value for injection into the combustion chamber.
- In greater detail, the compression assembly comprises a high-pressure pump and a distribution circuit set between the priming pump and the high-pressure pump to make the fuel available to the high-pressure pump itself.
- More precisely, the high-pressure pump has a full body, generally made of cast iron, inside which there is made a hollow chamber, referred to as "guard".
- The guard houses: a plurality of pumping elements designed to compress the fuel; a portion of a shaft for controlling the pumping elements, which is, in turn, actuated by the internal-combustion engine or by an auxiliary motor; and a cam designed to transmit motion from the shaft to each pumping element.
- In particular, each pumping element has an intake valve for regulating delivery of the fuel to be compressed by the distribution circuit, and a discharge valve for exit of the compressed fuel to the engine.
- In high-pressure pumps of a known type, the fuel, in addition to being compressed in the pumping elements, performs a further function of lubrication and cooling of the guard, shaft, cams and pumping elements.
- For this purpose, a pipe for delivery of the fuel coming from the distribution circuit traverses the full body of the high-pressure pump and connects the guard to a single inlet mouth made in the body itself.
- In a first embodiment of high-pressure pumps of a known type, a plurality of pipes for supplying the respective pumping elements branches off from the delivery pipe, in a position between the inlet mouth and the guard, and extends as far as the respective pumping elements.
- In a different embodiment, the delivery pipe does not present any branching and is provided with a plurality of supply pipes extending from the guard as far as the respective pumping elements.
- In both of the aforesaid embodiments, each supply pipe is made within the body of the pump and supplies the corresponding pumping element through the corresponding intake valve.
- In compression assemblies of a known type, when the fuel traverses the intake valves of the pumping elements, it is at a high temperature in so far as it has been heated by conduction by the body of the high-pressure pump or by the components housed in the guard.
- As a result there is a considerable leakage, which brings about a reduction in the efficiency of the high-pressure pump.
Furthermore, the engine, especially at high r.p.m., leads to a whirling motion of the fuel present in the guard, thus disturbing flow of the fuel itself towards the pumping elements and causing a further reduction in the efficiency of the high-pressure pump. - In addition, the fuel, with reference to the embodiment according to which it reaches the pumping elements after having cooled the guard directly, may be contaminated by possible machining swarf and by impurities generated by the detachment of parts of members in mutual contact. In this circumstance, there could arise faulty operation of the high-pressure pump and the need for burdensome and frequent maintenance interventions.
- The purpose of the present invention is to provide a high-pressure pump for an internal-combustion engine, which is without the drawbacks linked to known high-pressure pumps and specified above.
- The aforesaid purpose is achieved by the present invention, in so far as it relates to a high-pressure pump, as defined in Claim 1.
- The present invention likewise relates to a compression assembly for an internal-combustion engine, as defined in Claim 3.
- For a better understanding of the present invention, described in what follows is a preferred embodiment, which is provided purely by way of non-limiting example and with reference to the attached figure, which illustrates partially an injection system of an internal-combustion engine comprising a high-pressure pump and a compression assembly.
- With reference to the attached figure, designated as a whole by 1 is an injection system for an internal-combustion engine (in itself known and not illustrated).
- The system 1 is illustrated only as far as is required for an understanding of the present invention, and basically comprises a
tank 2 for the fuel and a compression system 3 fluidically connected to thetank 2 and designed to compress the fuel taken in from thetank 2 to make it available to the internal-combustion engine at the desired pressure. - In particular, the compression system 3 comprises a
priming pump 4 immersed in thetank 2 and acompression assembly 5 fluidically connected to thepriming pump 4 for compressing the fuel to a pre-set pressure value. - The
compression assembly 5 comprises a circuit 6 for distribution of the fuel, fluidically connected to thepriming pump 4, and a high-pressure pump 7, supplied by the circuit 6 and fluidically connected to the internal-combustion engine. - The circuit 6 is preferably made of a material with low thermal conductivity, is fluidically set between the
priming pump 4 and the high-pressure pump 7, and comprises: a pipe 9 connected to thepriming pump 4; one or more supply pipes 8 (in the case in point illustrated two in number), for supplying the fuel to the high-pressure pump 7; and apipe 10 for lubrication/cooling of the high-pressure pump 7 itself. - More in particular, the pipe 9 connects the
priming pump 4 to a union tee 11, from which there depart the lubrication/cooling pipe 10 and aconnector pipe 30. - The
connector pipe 30 terminates in a position corresponding to afurther union tee 12, from which there depart the supply pipes 8, which extend as far as the high-pressure pump 7. - Advantageously, the supply pipes 8 lie on the outside of the high-pressure pump 7 and are distinct from one another and from the lubrication/
cooling pipe 10. - A
flow regulator 23 with fixed cross section is moreover provided on the lubrication/cooling pipe 10 in a position between the union tee 11 and the high-pressure pump 7. - The
aforesaid flow regulator 23 is sized on the basis of the design characteristics of the high-pressure pump 7 so as to enable passage of a flow of fuel sufficient to lubricate/cool the high-pressure pump 7. - The high-pressure pump 7 comprises one or more pumping elements 13 (in the case in point two in number), provided for compressing the fluid to a pre-set pressure and actuated, via a cam 18, by a
shaft 19 operatively connected to the internal-combustion engine. - More precisely, each
pumping element 13 has anintake valve 14, for delivery of the fuel to be compressed coming from the corresponding supply pipe 8, and adischarge valve 15, for outflow of the compressed fuel to the internal-combustion engine. - Each
pumping element 13 is moreover connected, downstream of thedischarge valve 15, to arespective delivery pipe 25 set at least in part on the outside of the high-pressure pump 7. - In greater detail, the high-pressure pump 7 is defined by a
full body 16, generally made of a thermoconductive material, made inside which is a cavity, referred to hereinafter by the term "guard" 17, which houses thepumping elements 13, the cam 18, and an end portion of theshaft 19. - More precisely, the
guard 17 comprises achamber 32 set in a centroidal position within thebody 16 and designed to house theshaft 19, the cam 18, and a portion of thepumping elements 13. - The
guard 17 further comprises a pair ofliners 33 communicating with thechamber 32, each of which defines a seat for the motion of arespective pumping element 13 and houses a return spring acting on thepumping element 13 itself. - Each
liner 33 is fluidically connected to theintake valve 14 anddischarge valve 15 of therespective pumping element 13 via anintake pipe 34 and adischarge pipe 36, respectively, made within thebody 16. - The
body 16 moreover has aninlet mouth 20 to enable delivery of the fuel for cooling and lubrication of theguard 17 through the lubrication/cooling pipe 10. - In particular, the lubrication/
cooling pipe 10 is in part housed within thebody 16 and terminates in theguard 17. - Advantageously, the
body 16 further has one or moreinlet mouths 21, in the case in point two in number, to enable, through the respective supply pipes 8, delivery of the fuel with which to supply therespective pumping elements 13, said fuel coming directly from an external source, in the specific case defined by thetank 2. - In greater detail, each
intake valve 14 connects arespective pumping element 13 to a respective supply pipe 8 and is set within thebody 16 in the proximity of arespective inlet mouth 21. - In addition, the
body 16 has an outlet mouth 22 traversed by arecirculation pipe 24 connecting theguard 17 to thetank 2 and designed to take the fuel used for cooling and lubricating theguard 17 back into thetank 2 itself. - Finally, the
body 16 has one ormore outlet mouths 27, in the case in point two in number, to enable, throughrespective delivery pipes 25, outflow of the fuel compressed by therespective pumping elements 13. - More precisely, each
discharge valve 15 is fluidically set between therespective pumping element 13 and therespective delivery pipe 25, and is housed in the proximity of therespective outlet mouth 27 and within thebody 16 of the high-pressure pump 7. - The
delivery pipes 25 converge in aunion tee 29 from which there departs asingle supply pipe 28 of the engine. - In use, the fuel present in the
tank 2 is taken up and precompressed by thepriming pump 4 and sent, via the circuit 6, to the high-pressure pump 7. - In particular, the fuel at outlet from the
priming pump 4 fills the pipe 9 and subsequently, via the union tee 11, according to proportions that are established by theflow regulator 23, flows partly into the lubrication/cooling pipe 10 and partly into theconnector pipe 30. - The fuel that flows into the lubrication/
cooling pipe 10 accesses thebody 16 of the high-pressure pump 7 through theinlet mouth 20 and then fills theguard 17, lubricating and cooling thepumping elements 13, the cam 18, and theshaft 19. - The fuel that has cooled and lubricated the
guard 17 fills therecirculation pipe 24 and, through the outlet mouth 22, leaves thebody 16 and is sent back into thetank 2. - Instead, the fuel that flows into the
connector pipe 30, through theunion tee 12 fills each supply pipe 8 and accesses thebody 16 via therespective inlet mouths 21. - The fuel that enters the
body 16 through eachinlet mouth 21 feeds, through therespective intake valve 14, therespective pumping element 13 by which it is compressed up to a given pressure. - The compressed fuel is discharged, through the
respective discharge valve 15, from eachpumping element 13, and leaves thebody 16 via therespective outlet mouths 27, filling therespective delivery pipes 25. - The fuel that flows into each
delivery pipe 25, through theunion tee 29, is collected in thesupply pipe 28 of the internal-combustion engine. - From an examination of the characteristics of the high-pressure pump 7 and of the
compression assembly 5 made according to the present invention the advantages that they enable are evident. - In particular, when the fuel entering the high-pressure pump 7 traverses the
intake valves 14 of eachpumping element 13, it has not traversed theguard 17. - Hence, the fuel is at a level of temperature similar to that present in the
tank 2 and presents a non-whirling motion. In other words, the fuel is supplied to theintake valves 14 relatively "cold", i.e., not subjected to any heating due to the preliminary passage through the high-pressure pump 7. - The efficiency of said pump is therefore optimal in so far as it does not undergo any decrease due to the high temperature of the fuel at inlet to the
intake valves 14 and to the presence of whirling motion of the fuel itself. - Furthermore, the fuel that is to be compressed in the
pumping elements 13 is not contaminated by any possible machining swarf or by impurities present in theguard 17. - Consequently, operation of the high-pressure pump 7 is free from the faults deriving from the presence of impurities in the fuel and requires interventions of maintenance that are less frequent and less costly.
- Finally, it is clear that the high-pressure pump 7 and the
compression assembly 5 described and illustrated herein may undergo modifications and variations that do not depart from the sphere of protection defined by the ensuing claims. - In particular, the circuit 6 could be made of a material that is not thermoinsulating and connected to the high-pressure pump 7 via thermoinsulating connection means.
- Furthermore, the circuit 6 could be made of a material that is not thermoinsulating and constrained to one or more intermediate elements set at a sufficient distance from the high-pressure pump 7 as to contain heating of the fuel prior to intake into the pump 7 itself.
Claims (6)
- A pump (7) for supplying a pressurized fuel to an internal-combustion engine, said pump (7) comprising: a body (16); a compartment (17) made within said body (16); at least one pumping element (13) housed in a mobile way within said compartment (17) for raising the pressure of said fuel; fluid-supply means (21, 14) for delivering the fuel to said pumping element (13); and an inlet mouth (20) made in said body (16), supplied with the fuel coming directly from an external source (2) and fluidically connected to said compartment (17) for supplying it with said fuel for the purpose of lubrication and/or cooling of the pump (7) itself; said pump being
characterized in that said fluid-supply means (21, 14) comprise at least one further inlet mouth (21) made in said body (16) and fluidically connected to said pumping element (13) for supplying it with the fuel received directly from said external source (2). - A pump according to Claim 1, characterized in that said fluid-supply means (21, 14) comprise an intake valve (14) fluidically connecting said further inlet mouth (21) to said pumping element (13) and set in the proximity of the further inlet mouth (21) itself.
- A pump according to Claim 2, characterized in that said intake valve (14) is set in a position corresponding to said further inlet mouth (21).
- A compression assembly (5) for supplying a pressurized fuel to an internal-combustion engine, said assembly (5) comprising a pump (7) for raising the pressure of the fuel and distribution means (6) for making the fuel to be compressed available to said pump (7), said pump (7) comprising: a body (16); a compartment (17) made within said body (16); at least one pumping element (13) housed in a mobile way in said compartment (17) for raising the pressure of said fuel; fluid-supply means (21) for delivering the fuel to said pumping element (13) ; and a first inlet mouth (20) made in said body (16) and fluidically connected to said compartment (17) for supplying it with said fuel for the purpose of lubrication and/or cooling of the pump (7) itself; said distribution means (6) comprising a first fluid line (10) for supply of said first inlet mouth (20) of said pump (7); said compression assembly (5) being characterized in that said fluid-supply means (21, 14) comprise at least one second inlet mouth (21) made in said body (16) of said pump (7) and fluidically connected to said pumping element (13), and in that said distribution means (6) comprise at least one second fluid line (8) distinct from said first fluid line (10), which supplies said second inlet mouth (21) of said pump (7) and is set outside the body (16) of the pump (7) itself.
- A compression assembly according to Claim 4, characterized in that it comprises means with low transmission of heat cooperating with the fuel along said second fluid line (8).
- A compression assembly according to Claim 5, characterized in that said means with low transmission of heat are defined by the material constituting said second fluid line (8).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04425838A EP1657429A1 (en) | 2004-11-12 | 2004-11-12 | A high-pressure pump for an internal-combustion engine |
JP2005123746A JP2006138309A (en) | 2004-11-12 | 2005-04-21 | High pressure pump for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04425838A EP1657429A1 (en) | 2004-11-12 | 2004-11-12 | A high-pressure pump for an internal-combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1657429A1 true EP1657429A1 (en) | 2006-05-17 |
Family
ID=34932877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04425838A Withdrawn EP1657429A1 (en) | 2004-11-12 | 2004-11-12 | A high-pressure pump for an internal-combustion engine |
Country Status (2)
Country | Link |
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EP (1) | EP1657429A1 (en) |
JP (1) | JP2006138309A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20081928A1 (en) * | 2008-10-31 | 2010-05-01 | Bosch Gmbh Robert | METHOD AND PLANT FOR FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE |
US10774775B2 (en) | 2016-07-05 | 2020-09-15 | Ford Global Technologies, Llc | Direct-injection, supercharged internal combustion engine with high-pressure fuel pump, and method for operating an internal combustion engine of said type |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4624961B2 (en) * | 2006-06-13 | 2011-02-02 | 株式会社ニッキ | Fuel supply system |
DE102015219415B4 (en) * | 2015-10-07 | 2020-07-09 | Vitesco Technologies GmbH | High-pressure fuel pump and fuel supply device for an internal combustion engine, in particular a motor vehicle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5501196A (en) * | 1993-12-28 | 1996-03-26 | Technoflow Tube-Systems Gmbh | Fuel-injection system for motor-vehicle engine |
US20030029423A1 (en) * | 2001-08-08 | 2003-02-13 | Peter Boehland | Method, computer program, control and/or regulating unit, and fuel system for an internal combustion engine, in particular with direct injection |
US20030037768A1 (en) * | 2001-08-08 | 2003-02-27 | Sebastian Kanne | Method, computer program, control and/or regulating unit, and fuel system for an internal combustion engine |
DE10259178A1 (en) * | 2002-12-18 | 2004-07-08 | Robert Bosch Gmbh | High pressure pump for a fuel injection device of an internal combustion engine |
-
2004
- 2004-11-12 EP EP04425838A patent/EP1657429A1/en not_active Withdrawn
-
2005
- 2005-04-21 JP JP2005123746A patent/JP2006138309A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5501196A (en) * | 1993-12-28 | 1996-03-26 | Technoflow Tube-Systems Gmbh | Fuel-injection system for motor-vehicle engine |
US20030029423A1 (en) * | 2001-08-08 | 2003-02-13 | Peter Boehland | Method, computer program, control and/or regulating unit, and fuel system for an internal combustion engine, in particular with direct injection |
US20030037768A1 (en) * | 2001-08-08 | 2003-02-27 | Sebastian Kanne | Method, computer program, control and/or regulating unit, and fuel system for an internal combustion engine |
DE10259178A1 (en) * | 2002-12-18 | 2004-07-08 | Robert Bosch Gmbh | High pressure pump for a fuel injection device of an internal combustion engine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20081928A1 (en) * | 2008-10-31 | 2010-05-01 | Bosch Gmbh Robert | METHOD AND PLANT FOR FUEL SUPPLY TO AN INTERNAL COMBUSTION ENGINE |
US10774775B2 (en) | 2016-07-05 | 2020-09-15 | Ford Global Technologies, Llc | Direct-injection, supercharged internal combustion engine with high-pressure fuel pump, and method for operating an internal combustion engine of said type |
Also Published As
Publication number | Publication date |
---|---|
JP2006138309A (en) | 2006-06-01 |
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