EP0666416B1 - Kraftstoffeinspritzanlage für eine Brennkraftmaschine, insbesondere für einen Dieselmotor, sowie ein Verfahren zur Überwachung derselben - Google Patents
Kraftstoffeinspritzanlage für eine Brennkraftmaschine, insbesondere für einen Dieselmotor, sowie ein Verfahren zur Überwachung derselben Download PDFInfo
- Publication number
- EP0666416B1 EP0666416B1 EP94120647A EP94120647A EP0666416B1 EP 0666416 B1 EP0666416 B1 EP 0666416B1 EP 94120647 A EP94120647 A EP 94120647A EP 94120647 A EP94120647 A EP 94120647A EP 0666416 B1 EP0666416 B1 EP 0666416B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- injection
- pump
- pressure
- high pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
- F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3827—Common rail control systems for diesel engines
-
- 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
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M47/04—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure using fluid, other than fuel, for injection-valve actuation
- F02M47/043—Fluid pressure acting on injection-valve in the period of non-injection to keep it closed
-
- 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
- F02M59/205—Quantity of fuel admitted to pumping elements being metered by an auxiliary metering device
-
- 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
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
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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
- 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
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
Definitions
- the invention relates to a fuel injection system for an internal combustion engine, especially for a diesel engine, with for each combustion cylinder at least one controlled by a control unit Injection element, which has a closable injection opening leading into the cylinder and has a pressure space arranged in front of the latter, the one with a fuel pump depending on engine speed, Load and load change is connected to the high pressure part; and a method for monitoring the fuel injection system.
- a control unit Injection element which has a closable injection opening leading into the cylinder and has a pressure space arranged in front of the latter, the one with a fuel pump depending on engine speed, Load and load change is connected to the high pressure part; and a method for monitoring the fuel injection system.
- GB-A-2 246 175 is now another Injection system known, in which the injection quantity is dosed via a pump. The is through the Injectors self-used amount of fuel back in the pump suction area, i.e. downstream, the Quantity metering device returned. I.e. the needed amount of fuel delivered remains in the supply area of the Injectors back and actually gets in the combustion chamber. Furthermore, this has quantitative Delivery the advantage of a leak in this Supply area the fuel amount is not easy up is increased to the maximum pump output, but remains constant according to the characteristic values. By the Pressure drop caused by such a leak can also this disorder can be found at all.
- the object of the present invention was now a such injector with quantity metering further to improve in order to avoid the disadvantages mentioned and thus heating the fuel and the resulting to reduce the resulting performance losses.
- the quantity is advantageously metered in using a known one Current regulator or a 2/2-way valve, which depends on the piston position a fuel pump provided as a radial piston pump opens or closes.
- the pressure accumulator and the high pressure lines of the are advantageous High-pressure part of a tubular, forming an annular gap Enclosed envelope, which opens into the fuel tank, whereby at Leakages in this high-pressure part fuel losses and resulting Pollution can be avoided.
- the injection elements a fuel pump with a quantity metering of heavy oil and a separate high pressure pump with or without quantity metering for the control of the injection elements be assigned, the high pressure pump for the Control circuit approximately corresponds to the fuel pump, advantageously generates a slightly higher pressure.
- the high pressure pump for the Control circuit approximately corresponds to the fuel pump, advantageously generates a slightly higher pressure.
- FIG. 1 shows a fuel injection system 30 for an internal combustion engine provided diesel engine 1 of a motor vehicle, the several Combustion cylinder 110, one of which together are known and therefore not described in detail below Crank mechanism 112 for the piston 114 is illustrated.
- Crank mechanism 112 for the piston 114 is illustrated.
- Fuel supply device 3 a central control unit 31 and a battery 84 that supplies this electrically.
- the diesel engine 1 is made to measure the accelerator pedal 75 operated by a driver and others, not closer Controls shown controlled.
- Processed for this in addition to the accelerator pedal signal it is primarily the position signal or signals 76 as well as further signals 32 of the fuel pressure necessary for fine corrections in the high pressure section 9, signals 79, 80, 81, 85 for the air, pressure and temperature conditions before combustion or in the exhaust gas state.
- the signals can be processed digitally or analog.
- the fuel supply device 3 comprises a fuel tank 34, a line 12 extending from this, a prefeed pump 243, one Fine filter 89 and a fuel pump 6, which the fuel with High pressure from 200 to 2000 bar via a check valve 6 'and one Line 9 'in the high pressure part 9 having a chamber 9 "promotes.
- This high-pressure part 9 is included in each injection element 2 Pressure chamber 13 connected, which immediately before one in the cylinder 110 leading injection opening, which can be closed by a valve body 15 4 is arranged.
- the line 9 ' is also over for safety a pressure relief valve 7 is connected to the fuel tank 34.
- the Fuel pump 6, which supplies a plurality of injection elements 2, is from Control unit 31 is controlled in such a way that, depending on the engine speed, Load and load change works, taking the fuel high speed and high load with usually a high pressure, meanwhile at low load and low speed to a small pressure pumps.
- the amount of fuel injected in the combustion cylinder is by means of a quantity metering device operated by the control unit feedable.
- This quantity metering device is included designed as a current regulator 8 connected upstream of the high pressure pump 6, which is a throttle valve which can be actuated by the control unit with or without Position feedback of the valve body or a clocked closing valve having.
- a pressure correction throttle valve connected in series be assigned, which is described in detail below for FIG. 3.
- the fuel pump 6 supplies a quantity of fuel that is the number the injection elements fed by it and the desired injection quantity adapted, and it also supplies an additional amount of fuel, which is for a pressure change in the entire line system communicating with it is necessary because primarily with a rapid change in fuel pressure the pump delivery rate deviates from the average injection rate considerably. This is necessary because of changes in state an additional amount is required as the injection pressure changes.
- the injection duration of the fuel determined by the control unit 31 into the Cylinder and the dimensioning of the injection quantity at the quantity metering device must be coordinated.
- the control unit 31 is designed in such a way that, with it, that of the Quantity metering device generated injection quantity together with the programmed activation time of the injection valves exactly the desired Injection pressure result, so that always an optimal fuel supply takes place. This means if the from the injectors and their leakage to the amount determined by the current regulator agree, this for an injection pressure deviating from the target pressure leads.
- the less reliable actuator usually one of the Injection elements 2, for example, by means of known rotational uniformity detection be determined and receives depending on the severity the deviation a corrected actuation period or is switched off. In the latter case is then a correction to that of the current controller controlled amount necessary.
- the pressure accumulator 9 "and the high pressure lines 9 'of the High-pressure part 9 of a tubular, an annular gap 91 ' enclosing sheath 91, which opens into the fuel tank 34. Leakages from this high-pressure part can be collected as a result and in addition, these can be Detect the monitoring device immediately.
- FIG. 2 illustrates an injection element 2, one which supplies it Fuel pump 6, which is connected upstream of a quantity metering device 120 is controlled by the control unit 31 and via one of the fuel tank 34 outgoing line 12 by means of the prefeed pump 243 Fuel is fed.
- a pressure control valve connected in parallel to the latter 135 ensures a constant supply pressure of the in the Quantity metering device 120 guided fuel.
- This quantity metering device 120 has a 2/2-way valve 39, which to achieve the desired fuel injection quantity depending the position of the pump piston 41 of the fuel pump 6 opens or closes. This is preferably done via connecting lines 82 connected to the control unit 31 valve 39 in the upper position of the Piston 41 opened until it e.g. by the position of the crank mechanism 112 defined stroke has been moved in the suction direction and the suctioned quantity corresponds to the target specification. This allows a volumetrically defined, very precise injection quantity in a simple manner produce. The fuel reaches a from the valve opening 39 ' Chamber 35 and from there via a check valve 36 into the fuel pump 6.
- this chamber 35 also leads Leakage oil line 33, into which the leakage currents from the injection element 2 and from the system, which flow back from a line 10.
- a check valve 37 between the chamber 35 and the drain line 33 causes that with valve 39 open due to the increasing pressure Connection to the leak oil collection line 33 is temporarily interrupted.
- the pressure in the chamber 35 is reduced considerably and the check valve 37 opens and jammed leak oil in the line 33 is thereby also sucked in and subsequently into the high pressure part 9 promoted.
- This arrangement results in a closed one Circulation of the leakage oil as a whole and it is therefore not the control unit 31 Enter size for an additional delivery quantity. Therefore affect different leakage quantities of the injection elements and other components no longer meter the quantity on the pump.
- the 2/2-way valve 39 could also be used instead of the check valve 36 directly be upstream of the fuel pump 6.
- the drain line 33 would then lead back into the fuel tank, for example.
- the delivery rate should then be measured the loss of leakage oil along with the desired injection quantity are also funded.
- the leak oil could also be used via its own, which is also effective as a differential pressure valve Intake valve directly into one or more pump cylinders 40 be returned.
- a solenoid valve 60 has one that can be actuated by the control unit 31 Magnet core 22 and a magnet armature 62 with a valve body 38 and is attached to the upper end of a housing 25.
- a movable valve body 26 and closes on the latter a the injection opening 4 closing nozzle needle 15, which in Closing state is shown.
- the current regulator 8 is illustrated in detail in FIG. He instructs controllable throttle valve 252 and a series-connected one Pressure correction throttle valve 253, wherein the throttle valve 252 advantageously from a needle valve with a long-stroke solenoid and is formed with or without position feedback from the same.
- the throttle valve 252 advantageously from a needle valve with a long-stroke solenoid and is formed with or without position feedback from the same.
- Pressure correction throttle valve 253 before or, as shown, after the former provided, which its flow cross-section depending on the pressure drop changes over the throttle valve 252.
- the throttle valve 252 delivers the desired injection quantity and, if necessary, an additional one Flow rate to compensate for leakage losses by controlling its Flow cross-section.
- a throttle valve could also a clocked closing valve can be used, which preferably at given clock frequency by appropriate pulse width modulation would deliver the desired injection quantity.
- the pressure in the high-pressure part connected to the injection element 2 9 measured by the control unit 31 and compared there with a target pressure and if a deviation is found, the injection quantity or the power corrected the fuel pump and / or an emergency operation program switched on.
- the injection quantity at the injection elements adjusted by correcting the spraying time. If individual injection elements are recognized as responsible for these deviations the correction only on this. With larger deviations, too corrected the pump delivery rate, or an injection element completely switched off and the pump delivery to the lower active number of cylinders adjusted. In the worst case, there is still one minimal emergency program to use, which with reduced performance Should allow travel to a service station.
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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)
- Oil, Petroleum & Natural Gas (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
- Fig.1
- eine schematische Darstellung einer erfindungsgemässen Einspritzanlage eines Dieselmotors,
- Fig.2
- eine schematische Darstellung einer Mengendosiereinrichtung, einer nachfolgenden Kraftstoffpumpe sowie eines Einspritzelementes jeweils im Halbschnitt,
- Fig.3
- ein hydraulisches Schema einer als Stromregler ausgebildeten Mengendosiereinrichtung.
Claims (10)
- Kraftstoffeinspritzanlage (30) für eine Brennkraftmaschine, insbesondere für einen Dieselmotor (1), mit für jeden Verbrennungszylinder (110) wenigstens einem von einem Steuergerät (31) aus gesteuerten Einspritzelement (2), welches eine in den Zylinder (110) führende, von diesem schliessbare Einspritzöffnung (4) und einen vor letzterer angeordneten Druckraum (13) aufweist, der mit einem von einer Kraftstoffpumpe (6), welche einen in einem Zylinder (40) geführten Pumpenkolben (41) aufweist, in Abhängigkeit von Motordrehzahl, Last und Laständerung versorgten Hochdruckteil (9) verbunden ist, sowie eine Mengendosiereinrichtung (120) in der Kraftstoffzuführung zur Kraftstoffpumpe (6), welche die in den Verbrennungszylindern (110) benötigte und durch das Steuergerät (31) ermittelte Einspritzmenge des Kraftstoffes liefert, dadurch gekennzeichnet, dass die Mengendosiereinrichtung (120) ein vom Steuergerät (31) betätigbares Drossel- oder Schliessventil (39), eine daran anschliessende Kammer (35) und ein zwischen dieser Kammer (35) und dem Zylinder (40) der Kraftstoffpumpe (6) angeordnetes Rückschlagventil (36) aufweist, und dass weiter für die aus dem Einspritzelement (2) stammende Kraftstoff-Leckmenge mindestens eine Lecksammelleitung (33) vorgesehen ist, welche vom Einspritzelement (2) in die Kammer (35) führt.
- Kraftstoffeinspritzanlage nach Anspruch 1, dadurch gekennzeichnet, dass die Kraftstoffpumpe (6) als RadialKolbenpumpe ausgebildet ist und das Drossel- oder Schliessventil (39) als 2/2-Wegventil ausgebildet ist.
- Kraftstoffeinspritzanlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass eine von der Vorförderpumpe (243) ausgehende, zur Kraftstoffpumpe (6) parallel geschaltete und in den Hochdruckteil (9) führende, mit einem Rückschlagventil (42) versehene Leitung (12') vorgesehen ist, mit welcher ein Druckaufbau des Hochdruckteils (9) durch die Vorförderpumpe (243) ermöglicht ist.
- Kraftstoffeinspritzanlage nach Anspruch 3, dadurch gekennzeichnet, dass die Vorföderpumpe (243) elektrisch betrieben ist.
- Kraftstoffeinspritzanlage nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Lecksammelleitung (33) über ein Rückschlagventil (37) oder ein Differenzdruckventil in die Kammer (35) führt.
- Kraftstoffeinspritzanlage nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Druckspeicher (9") und die Hochdruckleitungen (9') des Hochdruckteils (9) von einer schlauchförmigen, einen Ringspalt (91') bildenden Hülle (91) umschlossen sind, welche in den Brennstofftank (34) oder dergleichen mündet.
- Kraftstoffeinspritzanlage nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass den Einspritzelementen (2a) eine Kraftstoffpumpe (6a) mit Mengendosiereinrichtung (120) für den Brennstoff und eine davon getrennte zusätzliche Hochdruckpumpe (6b) mit oder ohne Mengendosiereinrichtung (120) eines separaten Mediums für die Steuerung der Einspritzelemente (2a) zugeordnet ist.
- Kraftstoffeinspritzanlage nach Anspruch 7, dadurch gekennzeichnet, dass der von der zusätzlichen Hochdruckpumpe (6b) erzeugte Druck auf das separate Medium höher als derjenige von der Kraftstoffpumpe (6a) auf den Kraftstoff bewirkte Druck ist.
- Verfahren zur Ueberwachung einer Kraftstoffeinspritzanlage nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Druck in dem mit dem Einspritzelement (2) verbundenen Hochdruckteil (9) gemessen und mit einem Solldruck verglichen wird und bei Feststellung einer Abweichung die Öffnungsdauer des Einspritzelementes (2), dann die Fördermenge der Mengendosiereinrichtung (120) korrigierend verändert resp. eingestellt wird.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass bei Feststellung einer ausserhalb einer wählbaren resp. einstellbaren Toleranzgrenze erfolgten Abweichung des Druckes im Hochdruckteil (9) oder eines erkennbaren Fehlverhaltens eines Einspritzelementes (2) durch Düsenkuppenbruch oder Kabelbruch dieses abgeschaltet, die Fördermenge der Mengendosiereinrichtung (120) entsprechend angepasst und eine Warnung oder Ortung des Defektes angezeigt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH31594 | 1994-02-03 | ||
CH00315/94A CH689281A5 (de) | 1994-02-03 | 1994-02-03 | Kraftstoffeinspritzanlage fuer eine Brennkraftmaschine, insbesondere fuer einen Dieselmotor, sowie ein Verfahren zur Ueberwachung derselben. |
CH315/94 | 1994-02-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0666416A1 EP0666416A1 (de) | 1995-08-09 |
EP0666416B1 true EP0666416B1 (de) | 1999-09-01 |
Family
ID=4184211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94120647A Expired - Lifetime EP0666416B1 (de) | 1994-02-03 | 1994-12-24 | Kraftstoffeinspritzanlage für eine Brennkraftmaschine, insbesondere für einen Dieselmotor, sowie ein Verfahren zur Überwachung derselben |
Country Status (6)
Country | Link |
---|---|
US (1) | US5615656A (de) |
EP (1) | EP0666416B1 (de) |
JP (1) | JP3732248B2 (de) |
AT (1) | ATE184077T1 (de) |
CH (1) | CH689281A5 (de) |
DE (1) | DE59408691D1 (de) |
Cited By (1)
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DE102008022084A1 (de) * | 2008-05-05 | 2009-11-12 | J. Eberspächer GmbH & Co. KG | Verfahren zum Starten eines Heizgerätes, insbesondere Fahrzeugheizgeräts |
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US5732679A (en) * | 1995-04-27 | 1998-03-31 | Isuzu Motors Limited | Accumulator-type fuel injection system |
DE19544021A1 (de) * | 1995-11-25 | 1997-05-28 | Bosch Gmbh Robert | Steuerungssystem |
DE19645243C2 (de) * | 1996-11-02 | 1998-10-29 | Orange Gmbh | Druckspeicher-Einspritzvorrichtung |
US5709194A (en) * | 1996-12-09 | 1998-01-20 | Caterpillar Inc. | Method and apparatus for injecting fuel using control fluid to control the injection's pressure and time |
US6076504A (en) | 1998-03-02 | 2000-06-20 | Cummins Engine Company, Inc. | Apparatus for diagnosing failures and fault conditions in a fuel system of an internal combustion engine |
GB2351772B (en) * | 1999-07-08 | 2003-07-23 | Caterpillar Inc | Pressure-intensifying hydraulically-actuated electronically-controlled fuel injection system with individual mechanical unit pumps |
DE19954695A1 (de) * | 1999-11-13 | 2001-05-23 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem |
DE10047516A1 (de) * | 2000-09-22 | 2002-04-18 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Dosierung eines Reduktionsmittels zur Entfernung von Stickoxiden aus Abgasen |
DE10112154A1 (de) * | 2001-03-14 | 2002-09-26 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
US6899083B2 (en) * | 2001-09-10 | 2005-05-31 | Stanadyne Corporation | Hybrid demand control for hydraulic pump |
DE10218021A1 (de) * | 2002-04-23 | 2003-11-06 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
WO2004074671A1 (de) * | 2003-02-20 | 2004-09-02 | L'orange Gmbh | Kraftstoffeinspritzeinrichtung |
ATE457423T1 (de) * | 2007-09-11 | 2010-02-15 | Fiat Ricerche | Kraftstoffeinspritzeinrichtung mit einer hochdruckkraftstoffpumpe mit variabler durchflussmenge |
DE102010043255A1 (de) * | 2010-11-03 | 2012-05-03 | Robert Bosch Gmbh | Kraftstoffeinspritzsystem sowie Verfahren zur Befüllung und/oder Entlüftung eines Kraftstoffeinspritzsystems |
DE102012224403A1 (de) * | 2012-12-27 | 2014-07-03 | Robert Bosch Gmbh | Druckregelventil für ein Kraftstoffeinspritzsystem |
US9506417B2 (en) * | 2014-04-17 | 2016-11-29 | Ford Global Technologies, Llc | Methods for detecting high pressure pump bore wear |
FR3043141B1 (fr) * | 2015-10-29 | 2017-11-03 | Continental Automotive France | Procede de verification de la fonctionnalite d'un systeme d'alimentation en carburant haute pression d'un moteur a combustion interne |
DE102017210147A1 (de) * | 2017-06-19 | 2018-12-20 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Rücklaufdruckeinstellung für einen Injektor |
CN108678881B (zh) * | 2018-03-26 | 2020-06-26 | 潍柴动力股份有限公司 | 喷油器可靠性的检测方法及检测装置 |
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US3908621A (en) * | 1973-04-25 | 1975-09-30 | Ambac Ind | Hydraulically loaded injector nozzle |
DE3001154A1 (de) * | 1980-01-15 | 1981-07-16 | Robert Bosch Gmbh, 7000 Stuttgart | Mit pumpeduese arbeitende kraftstoffeinspritzanlage |
DE3119050A1 (de) * | 1981-05-05 | 1982-11-18 | Gebrüder Sulzer AG, 8401 Winterthur | "brennstoffeinspritzvorrichtung mit elektromagnetisch betaetigtem umschaltventil" |
JPS6053661A (ja) * | 1983-09-02 | 1985-03-27 | Hitachi Ltd | デイゼルエンジン用高圧燃料噴射装置 |
US4722708A (en) * | 1985-04-26 | 1988-02-02 | Outboard Marine Corporation | Marine propulsion device fuel distribution system |
CH668621A5 (de) * | 1986-01-22 | 1989-01-13 | Dereco Dieselmotoren Forschung | Kraftstoffeinspritzanlage fuer eine brennkraftmaschine. |
CH674243A5 (de) * | 1987-07-08 | 1990-05-15 | Dereco Dieselmotoren Forschung | |
US4911127A (en) * | 1989-07-12 | 1990-03-27 | Cummins Engine Company, Inc. | Fuel injector for an internal combustion engine |
US5230613A (en) * | 1990-07-16 | 1993-07-27 | Diesel Technology Company | Common rail fuel injection system |
US5133645A (en) * | 1990-07-16 | 1992-07-28 | Diesel Technology Corporation | Common rail fuel injection system |
US5076242A (en) * | 1990-07-18 | 1991-12-31 | Illinois Tool Works Inc. | Integral fuel line |
US5176122A (en) * | 1990-11-30 | 1993-01-05 | Toyota Jidosha Kabushiki Kaisha | Fuel injection device for an internal combustion engine |
JPH05195906A (ja) * | 1992-01-21 | 1993-08-06 | Mazda Motor Corp | 内燃機関の燃料通路構造 |
JPH05296121A (ja) * | 1992-04-17 | 1993-11-09 | Usui Internatl Ind Co Ltd | ディーゼル機関用高圧燃料噴射管 |
JPH06137231A (ja) * | 1992-10-26 | 1994-05-17 | Mitsubishi Motors Corp | 燃料噴射装置 |
-
1994
- 1994-02-03 CH CH00315/94A patent/CH689281A5/de not_active IP Right Cessation
- 1994-12-24 DE DE59408691T patent/DE59408691D1/de not_active Expired - Lifetime
- 1994-12-24 AT AT94120647T patent/ATE184077T1/de active
- 1994-12-24 EP EP94120647A patent/EP0666416B1/de not_active Expired - Lifetime
-
1995
- 1995-01-31 US US08/381,219 patent/US5615656A/en not_active Expired - Lifetime
- 1995-02-02 JP JP01626995A patent/JP3732248B2/ja not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008022084A1 (de) * | 2008-05-05 | 2009-11-12 | J. Eberspächer GmbH & Co. KG | Verfahren zum Starten eines Heizgerätes, insbesondere Fahrzeugheizgeräts |
DE102008022084B4 (de) * | 2008-05-05 | 2020-07-30 | Eberspächer Climate Control Systems GmbH & Co. KG | Verfahren zum Starten eines Heizgerätes, insbesondere Fahrzeugheizgeräts |
Also Published As
Publication number | Publication date |
---|---|
JP3732248B2 (ja) | 2006-01-05 |
DE59408691D1 (de) | 1999-10-07 |
US5615656A (en) | 1997-04-01 |
JPH0835462A (ja) | 1996-02-06 |
CH689281A5 (de) | 1999-01-29 |
ATE184077T1 (de) | 1999-09-15 |
EP0666416A1 (de) | 1995-08-09 |
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