EP0960274A1 - Kraftstoffeinspritzvorrichtung für brennkraftmaschinen - Google Patents
Kraftstoffeinspritzvorrichtung für brennkraftmaschinenInfo
- Publication number
- EP0960274A1 EP0960274A1 EP98928124A EP98928124A EP0960274A1 EP 0960274 A1 EP0960274 A1 EP 0960274A1 EP 98928124 A EP98928124 A EP 98928124A EP 98928124 A EP98928124 A EP 98928124A EP 0960274 A1 EP0960274 A1 EP 0960274A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- valve
- fuel injection
- valve member
- injection
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 81
- 239000007924 injection Substances 0.000 title claims abstract description 81
- 239000000446 fuel Substances 0.000 title claims abstract description 62
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- F02M63/0028—Valves characterised by the valve actuating means hydraulic
- F02M63/0029—Valves characterised by the valve actuating means hydraulic using a pilot valve controlling a hydraulic chamber
-
- 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
-
- 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
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid 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
- 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
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
Definitions
- the invention is based on a fuel injection device for internal combustion engines according to the preamble of claim 1.
- the high-pressure fuel source consists of a high-pressure fuel pump which conveys fuel from a low-pressure space into a high-pressure collection space, which communicates with the individual in the
- Combustion chamber of the injection valves projecting to be supplied to the internal combustion engine is connected, the common pressure storage system (common rail) being kept at a certain pressure level by a pressure control device.
- a pressure control device To control the injection times and injection quantities, an electrically controlled control valve is provided on the injection valves, which controls the high-pressure fuel injection when it is opened and closed.
- the control valve in the known fuel injection device is designed as a 3/2-way valve, one on the
- the known fuel injection device Since the 3/2-way control valve in the known fuel injection device is actuated directly by the actuator of an electromagnet, the known fuel injection device has the disadvantage that the stroke of the valve member of the 3/2-way control valve and thus the control effectiveness of the valve is limited .
- Kaftscherin injection With the well-known Kaftscherin injection adopted it is because of
- the fuel injection device for internal combustion engines according to the invention with the characterizing features of claim 1 has the advantage that a large passage cross-section can be realized with the help of the control valve, which enables quick opening and closing of the injection valve member and a small-sized electrically controlled pilot valve is used to use the large Control valve providing passage cross sections. Because a piezo drive is also used to actuate the valve member of the pilot valve, an increased switching speed can be achieved. An increase in Switching speed moreover results for the realization of a pilot injection from the measure that the pilot valve has two valve seats which are arranged in the course of the relief duct of the working space and which are opened and closed alternately with a single actuation of the pilot valve member. Thus, with a single excitation of the piezo drive, an intermediate relief of the is without loss of time through a field build-up in an electromagnet or field degradation and without the high energy requirement that would otherwise be required
- FIG. 1 shows an overall representation of the invention and FIG. 2 shows a partial enlargement of the representation of FIG. 1
- the fuel injection valve 1 shown in FIG. 1 has a fuel injection valve member 2, which is guided with a guide part 3 in a bore 4 of a fuel injection valve housing 5. At one end of the fuel injection valve member, this has a sealing surface 6, which can be brought to bear on a valve seat 7 on the housing and thereby separates fuel injection openings 8 from a pressure chamber 9, which in the form of an annular space 10 extends around the end of the fuel injection valve member 2 to extends to the valve seat 7.
- the pressure chamber 9 can be connected to a fuel high pressure source 13 via a pressure channel 12 and a control valve 15. Fuel that is brought to injection pressure is constantly available in the high-pressure fuel source.
- the injection valve member In the area of the pressure chamber 9, the injection valve member has a pressure shoulder 16, via which it can be lifted from the valve seat 7 for the purpose of injection when pressure is applied in the pressure chamber 9 against a closing spring 17 acting on the rear of the fuel injection valve member 2.
- the rear space 18 receiving the closing spring 7 is relieved of pressure via a relief channel 19.
- the space 18 is delimited by an end piston 21 of a control valve member 23 arranged coaxially to the fuel injection valve member.
- This is part of a control valve 24, which is designed as a 3/2 way valve.
- the control valve member 23 is guided in a stepped bore, the part 26 of which is smaller in diameter also accommodates the space 18 and tightly guides the end piston 21 and whose larger part 27 has a piston part 28 of the control valve member 23.
- the piston part 28 delimits a working space 31 in the fuel injection valve housing with its end face 29 and is on its end face 29 away from the side provided with a tapered first sealing surface 32 which tapers to a diameter reduction 34.
- the narrowing of the diameter 34 then merges conically into the end of the end piston 21 facing away from the pressure chamber 18, forming a control edge 46.
- the first sealing surface 32 cooperates with a first valve seat 36 formed at the transition from the stepped bore part 27 with the larger diameter to the stepped bore part 26 with the smaller diameter.
- An adjustment of the control valve member 23 in the other direction is limited by the abutment of its end face 29 on a wall 75 which closes off the working space 31 on the opposite side.
- the piston part 28 has an annular constriction 38 and delimits an annular space 39 there, which is formed together with an inner recess of the stepped bore part 27, which is larger in diameter, following the first valve seat 36 and which is continuous is connected to the high-pressure fuel source 13 via a pressure line 40.
- a channel 41 which runs obliquely to the longitudinal axis of the control valve member 23 and which connects the constriction 38 to the working space 31 and which has a diameter limitation 42 on the side of the working space 31, which limits the inflow of pressure medium formed by fuel from the high-pressure fuel source into the Working space 31 throttles or its inflow rate is limited.
- an annular space 45 is formed between the wall of the stepped bore and the diameter reduction 34 on the control valve member 23, into which the pressure channel 12 opens.
- An inner recess 44 is also provided in the wall of the stepped bore part 26 with a limiting edge 49 oriented towards the valve seat 36, which together with the control edge 46 of the end piston 21 forms a slide valve.
- a flattened portion 47 is provided on the end piston, which together with the wall of the stepped bore part 26, which is smaller in diameter, forms a flow cross-section which is constantly open to the space 18.
- the flattening is delimited by a horizontal edge 48 which lies in such a way that in the position of the control valve member 23 shown in FIG.
- Control valve member 23 has lifted from the first valve seat, this stroke being limited by the abutment of the end face 29 on the closing wall 75.
- the control edge 46 passes over the boundary edge 49 and, in the function as a slide valve, closes the connection between the inner recess 44 and the annular space 45.
- the edge 48 of the flattening always remains below the control edge 46, so that there is no connection between the space 18 and the annular space 45 results and in this position the fuel directed from the high-pressure fuel source to the pressure space 9 is not released to the space 18.
- the work space 31 can be relieved via a relief line 50 which leads axially away from the work space 31 and has a diameter limitation 51 which limits a discharge rate.
- the relief channel opens into a valve chamber 53 of a pilot valve 55.
- a closing body 56 is one in the valve chamber 53 Adjustable valve member 54 of the pilot valve 55, which closing body 56 is located at the end of a plunger 57 which is guided in a guide bore 58 in the fuel injection valve housing 5.
- the closing body 56 On the side of the closing body 56 opposite the first sealing surface 61, the latter has a second sealing surface 62 which merges into an annular groove 63 on the side of the tappet 57.
- This annular groove delimits in the guide bore 58, which opens into the valve chamber 53 via a second valve seat 64, an annular chamber 65 which is permanently connected to a further part 66 of the relief channel 50.
- the second sealing surface 62 In a second position of the closing body 56, the second sealing surface 62, which is in contact with the second valve seat 64, has interrupted the connection of the relief line 50 from the valve chamber 53 to the further part 66 of the relief line.
- the closing body 56 is acted upon by a positioning force in the form of a compression spring 68 in the closing direction with its second sealing surface 62 bearing on the second valve seat 64.
- the compression spring 68 is clamped between the housing of the fuel injection valve and a spring plate 69 on the tappet 57.
- a further piston 70 acts on the plunger 67, which, at its other end, delimits a hydraulic chamber 71, which on the other hand is delimited by an actuating piston 72, which is part of a piezo drive 73, which is not shown here. Care is taken that the hydraulic space 61 is always filled.
- the piezo drive also makes it possible for the closing body 56 to remain in a middle position in which the flow through both valve seats 60 and 64 remains open and thus a permanent relief of the working space 31 can be set via the relief line 50.
- the fuel injector described works as follows: In the position of the closing body 56 shown, the relief line 50 is closed. In this case, fuel that is brought to the injection pressure can reach the working space 31 from the high-pressure fuel reservoir 13 via the annular space 39, the channel 41 and the constriction 42 and can likewise build up a pressure there that corresponds to the pressure in the high-pressure fuel reservoir. This causes the control valve member 23 to remain in the position shown, in which the first sealing surface 32 abuts the first valve seat 36 and thus a connection between the annular space 39 and the annular space 45 is prevented. Thus, no high-pressure fuel can get from the pressure line 40 via the pressure channel 12 into the pressure chamber 9 and bring the fuel injection valve member 2 into the open position.
- the injection valve member 2 is in the closing position under the action of the restoring force in the form of the clamped compression spring 17.
- the piezo drive 73 is now excited and lifts the closing body 56 from the second valve seat 64, so that the work space 31 is relieved. This causes the control valve member 23 under the action of a restoring force which, for. B.
- a pressure shoulder loaded by the fuel pressure on the closing member or a spring (not shown further) is displaced such that it lifts off with its first sealing surface 32 from the first valve seat 36 and a connection between the annular space 39 via the narrowing of the diameter 34 to Annulus 45 produces and so the fuel can get from the high-pressure fuel reservoir into the pressure chamber 9 via the pressure channel 12.
- the fuel injection valve member 2 is lifted from its valve seat 7 and fuel injection takes place. To interrupt this fuel injection or to interrupt it
- the closing body 56 must get back to one of the seats 60 or 64.
- the original high pressure builds up again in the working space 31 due to the inflow of high-pressure fuel via the channel 41, so that the control valve member 23 is moved back onto the first valve seat 36 and thus the inflow of high fuel pressure is prevented.
- the annular space 45 is connected to the space 18 via the flat 47, so that the pressure in the pressure space 9 can quickly relax. This supports a quick closing of the injection valve member.
- the closing body 56 can be moved in different ways by the piezo drive.
- the piezo drive 73 can be excited and one is carried out
- the injection valve member 2 is immediately closed again because the connection between the pressure line 40 and the pressure channel 12 is also prevented by the reclosing of the control valve member 23.
- Such a short-term injection is particularly advantageous for achieving a pre-injection in diesel internal combustion engines.
- the closing body 56 is brought into a middle position between the two valve seats 64 and 60, so that the working space 31 remains relieved for a longer period of time and, accordingly, the fuel injection valve member 2 is also lifted from its valve seat for a longer time in accordance with an associated main fuel injection quantity.
- the piezo drive 73 is thus excited so that it first moves the closing body 56 away from the second valve seat 64 to the first valve seat 60, with the result of a pre-injection. Subsequently, the closing body 56 is brought back into a middle position and is finally moved back to the second valve seat 64 in order to complete the main injection.
- the closing body only carries out a single back and forth movement with a corresponding one for both a pre-injection and a main injection low excitation energy for its drive at high switching speed.
- a very short injection can be controlled with the aid of a small control valve without mass movement reversal energy.
Landscapes
- 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
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742073A DE19742073A1 (de) | 1997-09-24 | 1997-09-24 | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE19742073 | 1997-09-24 | ||
PCT/DE1998/000945 WO1999015783A1 (de) | 1997-09-24 | 1998-04-03 | Kraftstoffeinspritzvorrichtung für brennkraftmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0960274A1 true EP0960274A1 (de) | 1999-12-01 |
EP0960274B1 EP0960274B1 (de) | 2003-01-29 |
Family
ID=7843428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98928124A Expired - Lifetime EP0960274B1 (de) | 1997-09-24 | 1998-04-03 | Kraftstoffeinspritzvorrichtung für brennkraftmaschinen |
Country Status (7)
Country | Link |
---|---|
US (1) | US6067955A (de) |
EP (1) | EP0960274B1 (de) |
JP (1) | JP2001505976A (de) |
KR (1) | KR20000069080A (de) |
CN (1) | CN1104556C (de) |
DE (2) | DE19742073A1 (de) |
WO (1) | WO1999015783A1 (de) |
Families Citing this family (88)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19743669A1 (de) * | 1997-10-02 | 1999-04-08 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
GB9812889D0 (en) | 1998-06-15 | 1998-08-12 | Lucas Ind Plc | Fuel injector |
DE19860678A1 (de) * | 1998-12-29 | 2000-07-06 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
GB9914646D0 (en) * | 1999-06-24 | 1999-08-25 | Lucas Ind Plc | Fuel injector |
DE19939452C2 (de) * | 1999-08-20 | 2003-04-17 | Bosch Gmbh Robert | Vorrichtung zur Einspritzung von Kraftstoff |
DE19939445A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Injektor |
DE60014813T2 (de) * | 1999-08-31 | 2006-03-09 | Denso Corp., Kariya | Kraftstoffeinspritzvorrichtung |
DE19945670B4 (de) * | 1999-09-23 | 2006-01-12 | Siemens Ag | Verfahren zum Ansteuern eines kapazitiven Stellgliedes eines Kraftstoffeinspritzventils einer Brennkraftmaschine |
DE19946515A1 (de) * | 1999-09-24 | 2001-03-29 | Htw Dresden | Vorrichtung zur Steuerung der Kraftstoffeinspritzung für Hubkolbenmotore |
GB9922808D0 (en) * | 1999-09-28 | 1999-11-24 | Lucas Industries Ltd | Valve arrangement |
DE50011077D1 (de) * | 1999-10-16 | 2005-10-06 | Bosch Gmbh Robert | Verfahren und vorrichtung zur steuerung der kraftstoffzumessung in eine brennkraftmaschine |
DE19950779A1 (de) * | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Hochdruckkraftstoffinjektor mit hydraulisch gesteuertem Steuerschieber |
DE19963934A1 (de) * | 1999-12-31 | 2001-07-12 | Bosch Gmbh Robert | Steuerventil für einen Injektor für ein Kraftstoffeinspritzsystem mit von einem Stößel geführtem Stellglied |
DE10001099A1 (de) * | 2000-01-13 | 2001-08-02 | Bosch Gmbh Robert | Steuerventil für einen Injektor eines Kraftstoffeinspritzsystems für Brennkraftmaschinen mit Druckerhöhung im Steuerraum |
DE10002271A1 (de) * | 2000-01-20 | 2001-08-02 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
US20030155021A1 (en) * | 2000-01-22 | 2003-08-21 | Friedrich Boecking | Valve for the control of fluids |
DE10006786A1 (de) * | 2000-02-18 | 2001-08-30 | Bosch Gmbh Robert | Einspritzeinrichtung und Verfahren zum Einspritzen von Fluid |
EP1138912A1 (de) | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Online Optimierung eines Einspritzsystems mit piezolektrischen Elementen |
DE60018897T2 (de) | 2000-04-01 | 2006-04-06 | Robert Bosch Gmbh | Steuerung der Polarization der piezoelektrischen Elemente vor jeder ersten Einspritzung zur Erreichung von optimalen Startbedingungen |
EP1138913A1 (de) | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Methode und Apparat für die Aufladung eines piezoelektrischen Elements basierend auf gemessenen Ladungs- bzw. Entladungszeiten |
EP1143133B1 (de) | 2000-04-01 | 2004-01-21 | Robert Bosch GmbH | Ausgleich der Spieltoleranzen in verschieden Losen wegen der Schwankungen der Schichtdicke oder der Zahl der Schichten in mehrschichtigen piezoelektrischen Elementen |
DE60019260T2 (de) | 2000-04-01 | 2006-02-09 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur zeitgesteuerter Spannungsmessung über einer Vorrichtung in einem Ladungskreis eines piezoelektrischen Element |
EP1138917B2 (de) | 2000-04-01 | 2011-09-14 | Robert Bosch Gmbh | Brennstoffeinspritzanlage |
ATE446590T1 (de) | 2000-04-01 | 2009-11-15 | Bosch Gmbh Robert | Verfahren und vorrichtung zur regelung von spannungen und spannungsgradienten zum antrieb eines piezoelektrischen elements |
DE60003782D1 (de) | 2000-04-01 | 2003-08-14 | Bosch Gmbh Robert | Methode und Apparat für die Aufladung eines piezoelektrischen Elements |
DE60018385T2 (de) | 2000-04-01 | 2005-12-29 | Robert Bosch Gmbh | Bestimmung der Temperatur eines piezoelektrischen Elements unter Verwendung eines Energiebilanzmodells des piezoelektrischen Elements |
DE10016476A1 (de) | 2000-04-01 | 2001-12-06 | Bosch Gmbh Robert | Verfahren zur Diagnose der Spannungsansteuerung für einen piezoelektrischen Aktor eines Einspritzventils |
DE10016474B4 (de) * | 2000-04-01 | 2017-05-24 | Robert Bosch Gmbh | Verfahren zur Ansteuerung eines Einspritzventils mit einem piezoelektrischen Aktor |
DE60023838T2 (de) | 2000-04-01 | 2006-05-24 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Erzeugen von Steuerparametern in einem Steuersystem |
DE60011993T2 (de) | 2000-04-01 | 2004-12-09 | Robert Bosch Gmbh | Apparat und Methode für das Ermitteln einer Verringerung der Kapazität während des Antriebes von piezoelektrischen Elementen |
EP1138906B1 (de) | 2000-04-01 | 2003-10-08 | Robert Bosch GmbH | Optimierung von Einspritzsystemen, die piezoelektrische Elemente verwenden , durch Kompensation der Temperaturabhängigkeit |
EP1139449A1 (de) | 2000-04-01 | 2001-10-04 | ROBERT BOSCH GmbH | Brennstoffeinspritzanlage |
EP1138904B1 (de) | 2000-04-01 | 2005-09-14 | Robert Bosch GmbH | Verfahren und Vorrichtung zum Laden eines piezoelektrischen Elements |
EP1139447A1 (de) | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Verfahren und Vorrichtung zur Bestimmung einer frequenzkompensierten Kapazität eines piezoelektrischen Elements |
DE60039676D1 (de) | 2000-04-01 | 2008-09-11 | Bosch Gmbh Robert | Vorrichtung und Verfahren zur Erkennung eines Kurzschlusses zur Batteriespannung während der Ansteuerung piezoelektrischer Elemente |
EP1138915B1 (de) | 2000-04-01 | 2005-10-26 | Robert Bosch GmbH | Verfahren und Vorrichtung zur Bestimmung der Ladungsquantität während des Auf- und Entladens von piezoelektrischen Elementen |
EP1139446B1 (de) | 2000-04-01 | 2009-03-18 | Robert Bosch GmbH | Verfahren und Vorrichtung zur Regulierung von Systemparametern |
EP1139445A1 (de) | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Methode und Vorrichtung für die Diagnose einer Störung in einem System, das ein piezoelektrisches Element verwendet |
EP1138903B1 (de) | 2000-04-01 | 2004-05-26 | Robert Bosch GmbH | Zeit und Fall-kontrolliertes Aktivierungssystem für die Aufladung und die Entladung von piezoelektrischen Elementen |
EP1138908B1 (de) | 2000-04-01 | 2005-10-19 | Robert Bosch GmbH | Steuerung einer Einspritzanlage mit piezoelektrischen Elementen |
DE60015922T2 (de) * | 2000-04-01 | 2005-03-31 | Robert Bosch Gmbh | Steuerverfahren und Vorrichtung zur Mehrstellungventilbetätigung in einem Kraftstoffeinspritzsystem |
EP1138907B1 (de) | 2000-04-01 | 2006-10-04 | Robert Bosch GmbH | Kraftstoffeinspritzsystem |
GB0008598D0 (en) * | 2000-04-07 | 2000-05-31 | Delphi Tech Inc | Fuel system |
DE10029297A1 (de) * | 2000-06-14 | 2001-10-18 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE10031278A1 (de) * | 2000-06-27 | 2002-01-17 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE10031579A1 (de) * | 2000-06-29 | 2002-01-17 | Bosch Gmbh Robert | Druckgesteuerter Injektor mit Vario-Register-Einspritzdüse |
DE10031733A1 (de) * | 2000-06-29 | 2002-01-17 | Bosch Gmbh Robert | Common-Rail-System |
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JP5270760B2 (ja) * | 2008-10-10 | 2013-08-21 | ロバート ボッシュ ゲーエムベーハー | 重油コモンレール噴射システムの燃料供給システム |
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CN101963118B (zh) * | 2010-10-08 | 2011-12-14 | 中国重汽集团重庆燃油喷射系统有限公司 | 电控喷油器控制阀结构 |
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-
1997
- 1997-09-24 DE DE19742073A patent/DE19742073A1/de not_active Withdrawn
-
1998
- 1998-04-03 WO PCT/DE1998/000945 patent/WO1999015783A1/de not_active Application Discontinuation
- 1998-04-03 DE DE59807067T patent/DE59807067D1/de not_active Expired - Fee Related
- 1998-04-03 EP EP98928124A patent/EP0960274B1/de not_active Expired - Lifetime
- 1998-04-03 CN CN98801397A patent/CN1104556C/zh not_active Expired - Fee Related
- 1998-04-03 US US09/308,716 patent/US6067955A/en not_active Expired - Fee Related
- 1998-04-03 JP JP51839399A patent/JP2001505976A/ja active Pending
- 1998-04-03 KR KR1019997004522A patent/KR20000069080A/ko not_active Application Discontinuation
Non-Patent Citations (1)
Title |
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See references of WO9915783A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2001505976A (ja) | 2001-05-08 |
WO1999015783A1 (de) | 1999-04-01 |
DE19742073A1 (de) | 1999-03-25 |
CN1241244A (zh) | 2000-01-12 |
DE59807067D1 (de) | 2003-03-06 |
US6067955A (en) | 2000-05-30 |
KR20000069080A (ko) | 2000-11-25 |
CN1104556C (zh) | 2003-04-02 |
EP0960274B1 (de) | 2003-01-29 |
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