WO2003018991A1 - Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine - Google Patents
Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine Download PDFInfo
- Publication number
- WO2003018991A1 WO2003018991A1 PCT/DE2002/003140 DE0203140W WO03018991A1 WO 2003018991 A1 WO2003018991 A1 WO 2003018991A1 DE 0203140 W DE0203140 W DE 0203140W WO 03018991 A1 WO03018991 A1 WO 03018991A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- fuel
- pump
- injection valve
- chamber
- Prior art date
Links
- 238000002347 injection Methods 0.000 title claims abstract description 147
- 239000007924 injection Substances 0.000 title claims abstract description 147
- 239000000446 fuel Substances 0.000 title claims abstract description 101
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract 2
- 238000007789 sealing Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
Classifications
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- 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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/30—Varying fuel delivery in quantity or timing with variable-length-stroke pistons
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
- F02M45/086—Having more than one injection-valve controlling discharge orifices
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
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- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
- F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
-
- 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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
-
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
-
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
- F02M59/468—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means using piezoelectric operating means
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
-
- 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
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
Definitions
- the invention is based on one
- Fuel injection device for an internal combustion engine according to the preamble of claim 1.
- Such a fuel injection device is known from EP 0 957 261 AI. This
- Fuel injection device has a high-pressure fuel pump and a fuel injection valve connected to each cylinder of the internal combustion engine.
- the high-pressure fuel pump has a pump piston which is driven by the internal combustion engine in a stroke movement and which delimits a pump work space which is connected to a pressure space of the fuel injection valve.
- the fuel injection valve has an injection valve member, through which at least one injection opening is controlled and which can be moved in an opening direction against the closing force by the pressure prevailing in the pressure chamber. A connection of the is controlled by an electrically controlled control valve to control the fuel injection
- the fuel injection device according to the invention with the features according to claim 1 has the advantage that additional injection cross section can be released or closed by the second injection valve member depending on the operating parameters of the internal combustion engine with the at least one second injection opening, so that the injection cross section to the
- Operating conditions of the internal combustion engine can be optimally adjusted.
- the design according to claim 2 enables easy control of the control pressure in the control room.
- no additional component is required for this.
- the embodiment according to claim 4 makes it possible that at the start of delivery of the pump piston initially only a small injection cross-section is released with the at least one injection opening and, with a larger stroke of the pump piston, a larger injection cross-section is additionally released with the at least one second injection opening.
- the embodiment according to claim 5 enables a change in the stroke of the pump piston, from which the at least one second injection opening is opened.
- FIG. 1 shows a Fuel injection device for an internal combustion engine in a schematic representation according to a first exemplary embodiment
- FIG. 2 in an enlarged representation a section of a fuel injection valve denoted by II in FIG. 1 and FIG. 3 the fuel injection device according to a second exemplary embodiment.
- the internal combustion engine is preferably a self-igniting internal combustion engine.
- the fuel injection device is designed as a so-called pump-nozzle system or as a pump-line-nozzle system and has a high-pressure fuel pump 10 and a fuel injection valve 12 connected to each cylinder of the internal combustion engine. When designed as a pump-line-nozzle system, the high-pressure fuel pump 10 is removed from the
- Fuel injection valve 12 arranged and connected to it via a line.
- the fuel injection device is designed as a pump-nozzle system, with the high-pressure fuel pump 10 and the like
- Fuel injection valve 12 are connected directly to one another and form a structural unit.
- the high-pressure fuel pump 10 has a pump piston 18 which is tightly guided in a cylinder bore 16 in a pump body 14 and is driven in a lifting movement by a cam 20 of a camshaft of the internal combustion engine against the force of a return spring 19.
- the pump piston 18 delimits a pump working chamber 22 in the cylinder 16, in which fuel is compressed under high pressure during the delivery stroke of the pump piston 18.
- the pump working chamber 22 is supplied with fuel from a fuel reservoir 24 of the motor vehicle in a manner not shown in detail.
- the fuel injection valve 12 has a valve body 26, which can be constructed in several parts, in which a first injection valve member 28 is guided so as to be longitudinally displaceable in a bore 30.
- the valve body 26 has at its end region facing the combustion chamber of the cylinder of the internal combustion engine at least one first, preferably a plurality of first injection openings 32, which are arranged distributed over the circumference of the valve body 26.
- the first injection valve member 28 has, for example, an approximately conical sealing surface 34 on its end region facing the combustion chamber, which cooperates with a valve seat 36 formed in the valve body 26 in its end region facing the combustion chamber, from or after which the first injection openings 32 lead away.
- valve body 26 there is an annular space 38 between the injection valve member 28 and the bore 30 towards the valve seat 36, which, in its end region facing away from the valve seat 36, merges into a pressure space 40 surrounding the first injection valve member 28 by a radial expansion of the bore 30.
- the first injection valve member 28 has a pressure shoulder 42 at the level of the pressure chamber 40 by reducing the cross section.
- a first prestressed closing spring 44 engages, by means of which the first injection valve member 28 is pressed toward the valve seat 36.
- the first closing spring 44 is arranged in a first spring chamber 46 of the valve body 26, which adjoins the bore 30.
- Fuel injection valve 12 is hollow and in this is coaxial in the injection valve member 28 trained bore a second injection valve member 128 slidably guided.
- the second injection valve member 128 controls at least one second injection opening 132 in the valve body 26.
- the at least one second injection opening 132 is offset in the direction of the longitudinal axis of the injection valve members 28, 128 to the at least one first injection opening 32 toward the combustion chamber.
- the second injection valve member 128 has, for example, an approximately conical sealing surface 134 on its end region facing the combustion chamber, which cooperates with a valve seat 136 formed in the valve body 26 in its end region facing the combustion chamber, from or after which the second injection openings 132 lead away.
- the second injection valve member 128 can be formed in two parts and have a part which has the sealing surface 134 and faces the combustion chamber and a second part which adjoins the first part away from the combustion chamber. Near the end of the second injection valve member 128 on the combustion chamber side, a pressure surface 142 is formed thereon, on which the pressure prevailing in the pressure chamber 40 acts when the first injection valve member 28 is open.
- a second spring chamber 146 is formed in the valve body 26, in which a second closing spring 144 acting on the second injection valve member 128 is arranged.
- the end of the first injection valve member 28 projects into the first spring chamber 46 and is supported on the first closing spring 144.
- the first closing spring 44 is supported with its end facing away from the first injection valve member 28 on a sleeve 47 which is arranged between the first spring chamber 46 and the second spring chamber 146 and is pressed, for example, into the valve body 26.
- Injection valve member 128 protrudes through sleeve 47 into second spring space 146 and is supported by one Spring plate 147 on the second closing spring 144.
- the second closing spring 144 is supported at the bottom of the second spring chamber 146 with its end facing away from the second valve member 128.
- a control chamber 50 is delimited in the second spring chamber 146 by the spring plate 147.
- a channel 52 leads from the pump work chamber 22 through the pump body 14 and the valve body 26 into the pressure chamber 40 of the fuel injection valve 12.
- An electrically controlled valve 23 controls a connection of the pump work chamber 22 to a relief chamber, such as the fuel reservoir 24 or at least indirectly, for example Can serve area in which a slightly higher pressure than the fuel reservoir 24 is maintained. As long as no fuel injection is to take place, the connection of the pump work chamber 22 to the relief chamber is opened by the control valve 23, so that in the
- control valve 23 separates the pump work chamber 22 from the relief chamber, so that high pressure can build up in the pump work chamber 22 during the delivery stroke of the pump piston 18.
- the control valve 23 can be designed as a solenoid valve or as a piezo valve.
- the pump piston 18 has a channel 60 running in it, which on the one hand opens into the pump working chamber 22 in a section running in the direction of the longitudinal axis of the pump piston 18 at the front end of the pump piston 18 and on the other hand in an approximately radial to the longitudinal axis of the pump piston 18 extending section at a distance from the front end on the outer surface of the pump piston 18 opens.
- the radial section of channel 60 can, for example, be formed diametrically through the pump piston 18.
- a circumferential annular groove 62 is formed in the pump body 14 in the cylinder bore 16 and is connected to the control chamber 50 via a channel 63 running through the pump body 14 and the valve body 26. A connection of the control chamber 50 to the pump working chamber 22 is thus controlled by the pump piston 18 depending on its stroke.
- Pump working chamber 22 serves as a pressure source for controlling the pressure in the control chamber 50.
- the mouth of the channel 60 on the outer surface of the pump piston 18 is in register with the annular groove 62, so that the control chamber 50 is connected to the pump work space 22.
- the mouth of the channel 60 on the outer surface of the pump piston 18 is offset from the annular groove 62, so that the control chamber 50 is separated from the pump work chamber 22.
- an intermediate shaft 70 is arranged, on which a transmission element 71 is arranged in the form of a two-armed rocker arm, which rolls with one end, for example, via a roller 72 on the cam 20, and which rolls its other end is hinged to the pump piston 18. It is provided that the position of the intermediate shaft 70 can be changed with the rocker arm 71, as a result of which the initial stroke position of the pump piston 18 can be changed.
- 1 shows the intermediate shaft 70 with the rocker arm 71 and the left half of the pump piston 18 with solid lines in a first position in which the pump piston 18 has an initial stroke position in which the pump piston 18 is relatively far into the cylinder bore 16 in the pump body 14 dips.
- the position of the intermediate shaft 70 can be adjusted, for example, by means of a hydraulic one
- Adjustment device 74 take place, by which the mounting of the intermediate shaft 70 is shifted.
- the adjusting device 74 can also be designed as an eccentric through which the bearing of the intermediate shaft 70 is displaced.
- the control valve 23 is opened, so that fuel reaches the pump working chamber 22 from the fuel reservoir 24.
- the start of the fuel injection is determined by the control valve 23 closing, so that the pump work chamber 22 is separated from the relief chamber and high pressure builds up in the pump work chamber 22.
- the adjusting shaft 74 sets the intermediate shaft 70 into the required position. If the pump piston 18 has its initial stroke position shown in its right half in FIG. 1, the control chamber 50 is connected to the pump working chamber 22, so that there is a high control pressure in the latter.
- the fuel injection valve 12 opens by the first Injection valve member 28 lifts with its sealing surface 34 from the valve seat 36 and the at least one first injection opening 32 opens.
- the control pressure in the control chamber 50 acts on the second injection valve member 128 via the spring plate 147 and supports the closing spring 144, so that the pressure force acting on the second injection valve member 128 via the pressure surface 142 through the pressure surface 142 is not sufficient for the second injection valve member 128 to open.
- Fuel injection valve 12 is thus opened with the first injection openings 32 only a part of the entire injection cross section, so that correspondingly only a small amount of fuel is injected.
- the control chamber 50 is preferably connected to a relief chamber via at least one throttle point, so that the pressure in the control chamber 50 decreases.
- only the force of the second closing spring 144 and possibly a small pressure force acts on the second injection valve member 128, so that the pressure force acting on the second injection valve member 128 through the pressure surface 142 through the pressure surface 142 is sufficient to also cover the second To open injection valve member 128 so that the at least one second injection opening 132 is also released.
- the entire injection cross section is released at the fuel injection valve 12 and a larger amount of fuel is injected.
- the end of the fuel injection is determined by the opening of the control valve 23, as a result of which the pump work chamber 22 is connected to the relief chamber and no high pressure can build up in it.
- the pump piston 18 can have a further channel 65, which comes into overlap with the annular groove 62 when the pump piston 18 is at a maximum stroke into the pump working chamber 22 and establishes a connection to a relief chamber. With a maximum stroke of the pump piston 18, the control chamber 50 is thus connected to a relief chamber and pressure-relieved.
- the injection cross sections formed by the first injection openings 32 and the second injection openings 132 are at least approximately the same size, so that when only the first injection valve member 28 is opened, half of the total
- Injection cross section is released.
- the first injection openings 32 form a larger or smaller injection cross section than the second injection openings 132.
- the adjusting device 74 is controlled by an electrical control device 76, which also controls the control valve 23. If taking into account these operating parameters at the beginning of the fuel injection, only a small amount of fuel is to be injected, the adjusting device 74 is controlled by the control device 76 in such a way that the intermediate shaft 70 and thus the pump piston 18 are in the starting stroke position shown in FIG. 1 in the right half and at the beginning of fuel injection, only the first injection valve member 2 £ of the fuel injection valve 12 opens.
- the adjusting device 74 is controlled by the control device 76 such that the intermediate shaft 70 and thus the pump piston 18 are shown in the left half in FIG. 1 Starting stroke position is and both injection valve members 28 and 128 of the fuel injection valve 12 open at the beginning of the fuel injection.
- a high-pressure fuel pump 10 is provided for each cylinder, but only one camshaft 20 and one intermediate shaft 70 are provided for driving it. In order to change the position of the intermediate shaft 70 and the initial stroke position of the pump pistons 18 of all high-pressure fuel pumps 10, only one adjusting device 74 is required.
- FIG. 3 shows the fuel injection device according to a second exemplary embodiment, in which the basic structure is the same as in the first exemplary embodiment.
- the pump working chamber 22 is not used as the pressure source for controlling the pressure in the control chamber 50 in the second exemplary embodiment, but rather a fuel inlet, through which fuel flows into the pump working chamber 22 during the suction stroke of the pump piston 18 is fed.
- a fuel channel 80 formed in the pump body 14 is connected to the fuel inlet and opens at the jacket of the cylinder bore 16 in which the pump piston 18 is guided. In a region offset in the circumferential direction for the opening of the fuel channel 80, the channel 63, which leads to the control chamber 50, opens at the jacket of the cylinder bore 16.
- a channel 82 is formed in the pump piston 18, which extends, for example, radially to the longitudinal axis of the pump piston 18 and which opens into the jacket of the pump piston 18.
- the connection of the fuel channel 80 with the channel 63 to the control chamber 50 is controlled by the pump piston 18 depending on its stroke position through its channel 82.
- the intermediate shaft 70 is again shown with the pump piston 18 in different positions.
- the channel 82 of the pump piston 18 is in register with the mouth of the fuel channel 80 and the mouth of the channel 63 leading to the control chamber 50, so that the control chamber 50 with the fuel channel 80 connected is.
- the increased pressure in the fuel channel 80 thus acts in the control chamber 50, so that in the fuel injection valve 12 the second injection valve member 128 remains in its closed position and only the first injection valve member 28 opens.
- the channel 82 of the pump piston 18 is not in overlap with the opening of the fuel channel 80 and the opening of the channel 63 leading to the control chamber 50, but is arranged offset to these, so that the control chamber 50 is separated from the fuel channel 80. No increased pressure thus acts in the control chamber 50, so that both injection valve members 28 and 128 open in the fuel injection valve 12.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0205941-0A BR0205941A (pt) | 2001-08-25 | 2002-08-23 | Dispositivo injetor de combustìvel para uma máquina de combustão interna |
DE50212607T DE50212607D1 (de) | 2001-08-25 | 2002-08-23 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
EP02758168A EP1423599B1 (de) | 2001-08-25 | 2002-08-23 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
KR10-2003-7005676A KR20040028663A (ko) | 2001-08-25 | 2002-08-23 | 엔진용 연료 분사 장치 |
JP2003523819A JP2005500468A (ja) | 2001-08-25 | 2002-08-23 | 内燃機関に用いられる燃料噴射装置 |
US10/415,087 US6901915B2 (en) | 2001-08-25 | 2002-08-23 | Fuel injection device for an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10141679.2 | 2001-08-25 | ||
DE10141679A DE10141679A1 (de) | 2001-08-25 | 2001-08-25 | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003018991A1 true WO2003018991A1 (de) | 2003-03-06 |
Family
ID=7696588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/003140 WO2003018991A1 (de) | 2001-08-25 | 2002-08-23 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
Country Status (10)
Country | Link |
---|---|
US (1) | US6901915B2 (de) |
EP (1) | EP1423599B1 (de) |
JP (1) | JP2005500468A (de) |
KR (1) | KR20040028663A (de) |
CN (1) | CN1466655A (de) |
BR (1) | BR0205941A (de) |
DE (2) | DE10141679A1 (de) |
PL (1) | PL360296A1 (de) |
RU (1) | RU2003113559A (de) |
WO (1) | WO2003018991A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1645749A1 (de) * | 2004-09-17 | 2006-04-12 | Delphi Technologies, Inc. | Brennstoffeinspritzdüse und Verfahren zum Herstellen einer Brennstoffeinspritzdüse |
US7063272B2 (en) | 2004-09-17 | 2006-06-20 | Delphi Technologies, Inc. | Fuel injection nozzle and method of manufacture |
WO2014063715A1 (en) * | 2012-10-22 | 2014-05-01 | Volvo Lastvagnar Aktiebolag | A fuel injection system |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004044414A1 (de) * | 2002-11-11 | 2004-05-27 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für brennkraftmaschinen |
DE10323562A1 (de) * | 2003-05-26 | 2004-12-30 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
DE10344000A1 (de) * | 2003-09-23 | 2005-04-21 | Bosch Gmbh Robert | Einspritzdüse für eine Brennkraftmaschine |
DE10344942B4 (de) * | 2003-09-27 | 2017-12-21 | Robert Bosch Gmbh | Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine |
DE102004015360A1 (de) * | 2004-03-30 | 2005-10-20 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
KR101263540B1 (ko) * | 2008-12-23 | 2013-05-13 | 현대중공업 주식회사 | 디젤기관용 연료 분사장치 |
CA2767247C (en) | 2012-02-07 | 2014-03-25 | Westport Power Inc. | Apparatus and method for igniting a gaseous fuel in a direct injection internal combustion engine |
US9562505B2 (en) * | 2013-06-11 | 2017-02-07 | Cummins Inc. | System and method for control of fuel injector spray |
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US4306528A (en) * | 1978-02-23 | 1981-12-22 | Robert Bosch Gmbh | Fuel injection apparatus for internal combustion engines, particularly diesel engines |
US4538576A (en) * | 1983-07-21 | 1985-09-03 | Allied Corporation | Diesel fuel injector with double dump configuration |
DE4123721C1 (en) * | 1991-07-17 | 1992-06-17 | Steyr-Daimler-Puch Ag, Wien, At | Fuel injection system with pump and nozzle units - has laterally coupled pump duct to chamber in piston bush |
EP0957261A2 (de) | 1998-05-15 | 1999-11-17 | LUCAS INDUSTRIES public limited company | Brennstoffsystem und Pumpe zur Anwendung in einem solchen System |
EP0972932A1 (de) * | 1998-07-16 | 2000-01-19 | MaK Motoren GmbH & Co. KG | Einspritzventil für Brennkraftmaschinen |
DE10038054A1 (de) * | 1999-08-05 | 2001-02-15 | Avl List Gmbh | Nockenbetätigte Einspritzeinrichtung für eine Brennkraftmaschine |
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GB9916464D0 (en) * | 1999-07-14 | 1999-09-15 | Lucas Ind Plc | Fuel injector |
US6725838B2 (en) * | 2001-10-09 | 2004-04-27 | Caterpillar Inc | Fuel injector having dual mode capabilities and engine using same |
US6769635B2 (en) * | 2002-09-25 | 2004-08-03 | Caterpillar Inc | Mixed mode fuel injector with individually moveable needle valve members |
-
2001
- 2001-08-25 DE DE10141679A patent/DE10141679A1/de not_active Withdrawn
-
2002
- 2002-08-23 US US10/415,087 patent/US6901915B2/en not_active Expired - Fee Related
- 2002-08-23 EP EP02758168A patent/EP1423599B1/de not_active Expired - Lifetime
- 2002-08-23 PL PL02360296A patent/PL360296A1/xx not_active Application Discontinuation
- 2002-08-23 WO PCT/DE2002/003140 patent/WO2003018991A1/de active IP Right Grant
- 2002-08-23 KR KR10-2003-7005676A patent/KR20040028663A/ko not_active Application Discontinuation
- 2002-08-23 CN CNA028027345A patent/CN1466655A/zh active Pending
- 2002-08-23 DE DE50212607T patent/DE50212607D1/de not_active Expired - Fee Related
- 2002-08-23 BR BR0205941-0A patent/BR0205941A/pt not_active Application Discontinuation
- 2002-08-23 JP JP2003523819A patent/JP2005500468A/ja active Pending
- 2002-08-23 RU RU2003113559/06A patent/RU2003113559A/ru not_active Application Discontinuation
Patent Citations (7)
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US4306528A (en) * | 1978-02-23 | 1981-12-22 | Robert Bosch Gmbh | Fuel injection apparatus for internal combustion engines, particularly diesel engines |
US4538576A (en) * | 1983-07-21 | 1985-09-03 | Allied Corporation | Diesel fuel injector with double dump configuration |
DE4123721C1 (en) * | 1991-07-17 | 1992-06-17 | Steyr-Daimler-Puch Ag, Wien, At | Fuel injection system with pump and nozzle units - has laterally coupled pump duct to chamber in piston bush |
EP0957261A2 (de) | 1998-05-15 | 1999-11-17 | LUCAS INDUSTRIES public limited company | Brennstoffsystem und Pumpe zur Anwendung in einem solchen System |
EP0972932A1 (de) * | 1998-07-16 | 2000-01-19 | MaK Motoren GmbH & Co. KG | Einspritzventil für Brennkraftmaschinen |
DE10038054A1 (de) * | 1999-08-05 | 2001-02-15 | Avl List Gmbh | Nockenbetätigte Einspritzeinrichtung für eine Brennkraftmaschine |
DE10040738A1 (de) * | 1999-08-19 | 2001-03-15 | Avl List Gmbh | Einspritzeinrichtung für eine Brennkraftmaschine mit einer als Doppelnadeldüse ausgeführten Einspritzdüse |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1645749A1 (de) * | 2004-09-17 | 2006-04-12 | Delphi Technologies, Inc. | Brennstoffeinspritzdüse und Verfahren zum Herstellen einer Brennstoffeinspritzdüse |
US7063272B2 (en) | 2004-09-17 | 2006-06-20 | Delphi Technologies, Inc. | Fuel injection nozzle and method of manufacture |
WO2014063715A1 (en) * | 2012-10-22 | 2014-05-01 | Volvo Lastvagnar Aktiebolag | A fuel injection system |
Also Published As
Publication number | Publication date |
---|---|
DE10141679A1 (de) | 2003-03-06 |
US20040232256A1 (en) | 2004-11-25 |
PL360296A1 (en) | 2004-09-06 |
CN1466655A (zh) | 2004-01-07 |
EP1423599B1 (de) | 2008-08-06 |
BR0205941A (pt) | 2003-08-05 |
RU2003113559A (ru) | 2005-01-20 |
JP2005500468A (ja) | 2005-01-06 |
US6901915B2 (en) | 2005-06-07 |
EP1423599A1 (de) | 2004-06-02 |
KR20040028663A (ko) | 2004-04-03 |
DE50212607D1 (de) | 2008-09-18 |
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