EP1117930A1 - Verfahren zum elektronischen trimmen einer einspritzvorrichtung - Google Patents
Verfahren zum elektronischen trimmen einer einspritzvorrichtungInfo
- Publication number
- EP1117930A1 EP1117930A1 EP98955495A EP98955495A EP1117930A1 EP 1117930 A1 EP1117930 A1 EP 1117930A1 EP 98955495 A EP98955495 A EP 98955495A EP 98955495 A EP98955495 A EP 98955495A EP 1117930 A1 EP1117930 A1 EP 1117930A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control signal
- injection pump
- polynomial
- influence
- parameters
- 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
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000009966 trimming Methods 0.000 title claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 92
- 239000007924 injection Substances 0.000 claims abstract description 92
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000012937 correction Methods 0.000 claims description 29
- 238000004146 energy storage Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 22
- 239000007921 spray Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 230000006399 behavior Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000001595 flow curve Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
- F02D41/2467—Characteristics of actuators for injectors
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2409—Addressing techniques specially adapted therefor
- F02D41/2412—One-parameter addressing technique
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2432—Methods of calibration
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/002—Measuring fuel delivery of multi-cylinder injection pumps
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2477—Methods of calibrating or learning characterised by the method used for learning
Definitions
- the invention relates to a method for electronically minimizing to eliminating nominal power deviations (trimming) of a fluid injection device, in particular a fuel injection device, primarily a fuel injection device with a plurality of injection pumps of an internal combustion engine.
- the control signal is calculated and generated in an electronic control module and passed on to the electronic and / or electrical devices of the injection device or the injection pump, where it receives the spray corresponding to the control signal, e.g. Fuel initiated and can be executed.
- the generation of the control signal is complex and usually includes a special control strategy.
- a large number of influencing variables are taken into account, which are related, for example, to engine operation, engine circumference, fuel type and / or fuel condition.
- data are usually determined by means of sensors and supplied to the control module.
- the engine speed, the crankshaft position, the engine coolant temperature, the engine exhaust pressure, the throttle position, the outside temperature, the air pressure or the like are detected at a specific point in time to the control module and processed or offset in the form of data in the control module.
- the calculation results in a factor by which a control signal proportional to the quantity stored in the control module for the motor and corresponding to the nominal output of the motor is multiplied.
- the individual injection pumps are divided into certain trim categories of similar deviations and an adjustment factor for the control signal is defined for each category.
- the object of the invention is to provide a method for electronically trimming an injection device which enables a more precise injection pump-related adaptation of the control signal to the nominal injection power initiated by the control signal without complex structural measures relating to the injection pump.
- injection pump type is essential.
- An electromagnetically operated injection pump is used, which works on the energy storage principle and is described, for example, in WO 92/14925 and WO 93/18297.
- the injection pumps used according to the invention can be structurally set up in such a way that their injection Characteristic follows a curve of at least third degree as closely as possible.
- the spray characteristics of most known energy storage injection pumps inherently follow a curve of third or higher degree, so that these pumps do not require any structural changes.
- These measures are so simple and only require such little effort that they are almost insignificant.
- These measures also promote the usability of the full performance potential of the pumps and thus their efficiency both with regard to the delivery rate and with regard to the manufacturing effort for the respective application.
- the spray characteristics of each individual manufactured injection pump are determined under normal conditions (for example at 20 ° C. and normal atmospheric pressure), measured values of the so-called flow curve or delivery characteristic being determined and processed in sufficient numbers, for example in the form of a signal duration / spray quantities Diagram.
- the function is calculated from the measured values, which corresponds to the curve of the third or higher degree which can be determined from the measured values.
- Y is the control signal duration to be determined and X is the amount of fluid to be sprayed.
- the four parameters are stored electronically and, if necessary, linked to a serial number of the injection pump, electronically managed and represent the exact mathematical description of each point on the delivery characteristic of this individual injection pump. If necessary, the electronic control module of the electronic control system uses these parameters and calculates the switch-on time signal required for this individual pump in order to exactly achieve the requested injection quantity.
- the four parameters are expediently marked in a manner known per se on or on the injection pump and accompany the injection pump until they are used and during their use.
- the measurement of a delivery curve of the injection pump is expediently limited to a limited number of individual measurements for reasons of time.
- each individual measurement can only be carried out with a finite accuracy, which results in the measurement points scattering around the actual curve shape in accordance with the deviation tolerance of the measuring device.
- a mathematically performed determination of the polynomial curve not only interpolates between the measurement errors and reduces their size, but also automatically leads to a non-linear interpolation between the individual measurement points. According to the invention, this guarantees, with a minimum of effort, a maximum of achievable precision in the reproduction of the injection quantity by means of an electrical signal duration.
- the parameters of each injection pump are transferred to a memory of the electronic control and assigned to the respective injection pump.
- the engine is driven by a map in which the quantity of fuel to be injected or an engine-specific correction value proportional to it is stored as a function of speed, load and some other commonly used engine operating parameters.
- the processor of the control system also calculates in particular in front of everyone Injection process for system-specific trimming an electrical control signal Y necessary for the injection pump in question.
- an alternative method is provided according to the invention.
- the delivery characteristics are recalculated once each time the engine is started and stored digitally in a latent memory. Reading out memory data requires far less power from the processor than complex arithmetic operations. Even if a high storage capacity for finely resolved characteristic curves is selected, the overall costs can be kept lower with this method due to the simpler processor.
- an electronic engine control system usually also recognizes changing environmental influences relevant to engine operation, e.g. Temperature and pressure of the intake air and adjusts the injection quantity during the engine-specific correction to these conditions.
- the corrections are usually carried out as a factor as a percentage change in the control variables entered in the map before they are passed on to the injection pump system.
- the stored injection quantities or the quantities proportional to them are multiplied by a corresponding factor greater or less than 1 in order to adapt them to the current environmental conditions.
- the delivery characteristic of which, under normal conditions, follows a curve of at least a third degree or approximately a curve of a third or higher degree it is also possible, surprisingly, to have some significant changing influences on the injection pump or on an injection equipped with several injection pumps - systems that influence the delivery rate of the injection pump, by correcting the control signal very precisely and without taking into account any special effort (system-specific trimming).
- These influences are, for example, different temperatures in the fuel, different temperatures at the injection nozzle, different battery voltages, different driver output signals.
- delivery characteristics are determined by measuring, for example, the delivery rate in some specific different states of an influence type and, for example, determining the four parameters of the respective corresponding third-degree curve. A factor is then mathematically determined for each parameter, which describes its individual change under the different states of the relevant type of influence. These factors are stored in the same way and made available to the control module.
- ⁇ X and ⁇ Y values are determined and stored instead of the polynomial or curve parameters for the displacements of the conveying characteristic under certain different conditions of an influence type and made available to the control module. This procedure significantly reduces the storage data and the computing power to be provided.
- control module which, for intermediate states, carries out a corresponding linear interpolation between either the parameters, if these are stored, or in the case that ⁇ X or ⁇ Y values are stored, between the stored ⁇ X and ⁇ Y Values.
- ⁇ X and ⁇ Y values are used, an arithmetic operation is used for the control signal formation, after which the corresponding point on the normal conditions corresponds to the fuel quantity-proportional control signal value (engine-specific correction) that takes environmental influences into account Funding characteristic (Normal polynomial or normal characteristic curve), for example of the third degree of the injection pump, and then the ⁇ X value is assigned to the individualized injection pump trim correction by addition or subtraction, corresponding to a previously determined state of an influence.
- the control module calculates the Y value of the third degree polynomial, which is shifted by the value ⁇ X.
- the ⁇ X value is assigned by addition or subtraction, which results in a point which lies on a correspondingly two-dimensionally shifted, but coincidentally correct third-degree correction polynomial, which results in a signal duration which depends on the state of the type of influence is required for the required injection quantity of the individualized injection pump.
- This state-corrected signal duration is determined by the simplest and fastest-performing operation for microprocessors, namely the addition or subtraction of two values.
- the choice of the type of influence to be corrected is arbitrary, the respective correction being equally simple. According to the number of influencing variables to be corrected, a corresponding number of assignments can be made simultaneously.
- each engine control is subjected to an electrical function test in which reactive loads are connected to the output channels instead of the injection pumps.
- the current rise curve of a single current pulse is recorded on each channel and the integral below is mathematically formed. This integral corresponds to the electrical work performed. If the measured integral value deviates from a predefined target variable, a corresponding pair of addition or subtraction values is selected, assigned to the relevant output channel and stored in the control. Regardless of the later controlled injection element, each output channel receives the correction for its characteristic shortcoming or excess electrical work.
- the amount of fuel delivered in a unit of time is, among other things, a result of the pressure difference between the pressure inside the nozzle of the injection pump and outside it, taking into account the flow resistance of the nozzle.
- the control method according to the invention therefore provides a programmable threshold value in the engine map, from which no more fuel quantity corrections with regard to air temperature and air pressure are carried out. In order to achieve a smooth transition between the corrected and uncorrected map area, the correction values are interpolated to zero. This interpolation starts from a further programmable threshold value, which is above the former.
- FIG. 1 shows a signal duration / injection quantity diagram with delivery characteristics of a specific injection pump
- Fig. 2 is a signal duration / injection quantity diagram with delivery characteristics of a particular injection pump at different back pressures.
- FIG. 3 schematically shows a control strategy operating according to the method according to the invention.
- Fig. 1 the injection quantity V e is plotted on the abscissa and the signal duration ti is plotted on the ordinate.
- a standard funding characteristic curve 1 is drawn in as a third degree curve, its parameters are indicated in box 2 (flow curve under normal conditions).
- a correction curve 3 of the same shape is drawn in with a ⁇ X / ⁇ Y shift.
- the third degree curve 3 is a flow curve or delivery characteristic of the injection pump in a specific state of a specific type of influence, possible types of influence being listed, for example, in box 4.
- the fuel quantity proportional V e value S which has already been corrected for engine operation, is used, which results from the nominal value from the engine-specific correction.
- the correction value is added .DELTA.X the injection operation correction.
- the corresponding ⁇ X-shifted third-degree polynomial is calculated by the control module.
- the correction value ⁇ Y is added to the injection pump operating correction and a point T 2 is determined which lies on the state-related X / Y-shifted third-degree 3 polynomial, the parameters of which are indicated in box 5.
- the point T 2 lying on the polynomial 3 represents a corresponding state-related corrected time period of ti in ms for the injection of the required amount of fuel.
- Fig. 2 illustrates the influence of a back pressure in the map diagram.
- the polynomials of the third degree 6 to 10 are determined at correspondingly higher counterpressures.
- the position of these polynomials gives rise to distortions which can be mathematically determined with F * X and ⁇ Y values, based on the standard polynomial 1.
- a corresponding back pressure correction is carried out with the F * X and ⁇ Y values, which in turn only requires multiplication and addition or subtraction.
- the described invention is not restricted to the examples given. Further types of influence can be determined, the third or higher degree polynomials shifted from the norm polynomial or correspondingly distorted third or higher polynomials higher degree.
- the invention can also be implemented if only approximate third or higher degree polynomials result, because the simple correction method described can still be used.
- the polynomials of a higher degree than a third degree are used whenever the measured values for the standard polynomial do not follow a third degree curve precisely enough. It has been shown that in this case the measured values generally correspond to a curve of a higher degree. In any case, within the scope of the invention, the higher degree curve can be determined which corresponds most precisely to the measured values.
- a third-degree curve is preferably defined because fewer parameters need to be defined and stored in comparison to higher-degree curves.
- FIG. 3 illustrates a control strategy according to the method according to the invention.
- the outlined fields with the asterisk indicate multiplication and the outlined fields with the + sign indicate addition or subtraction.
- the basic characteristic diagram fuel supplies a signal value that is proportional to the fuel quantity and that is multiplied by signal values of the engine-specific correction.
- the engine-specific correction - as can be seen from the dashed field and the lined fields contained therein - e.g. a threshold load that takes air temperature and air pressure into account in the usual way.
- the system-specific trimming for an injection pump is shown on the right-hand side of FIG. 3.
- types of influence are shown in lined fields, on the basis of which the polynomial is corrected.
- the position of the asterisk field and the position of the + fields in FIG. 3 with respect to the thick solid signal 1 cylinder line indicates when which correction for trimming is carried out.
- the influence type "cylinder counterpressure" it follows that the multiplication is carried out in advance and the ⁇ Y value is only added or subtracted after the polynomial calculation.
- Vertical, thin arrow lines indicate that the corresponding values can also be used for other cylinders if the relevant conditions are met.
- control strategy shown in FIG. 3 can of course also provide a different order of addition and subtraction with regard to the types of influence, but it is essential that a signal value proportional to the fuel quantity is assumed, which already has the engine-specific corrections.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19845441 | 1998-10-02 | ||
DE19845441A DE19845441C2 (de) | 1998-10-02 | 1998-10-02 | Verfahren zum elektronischen Trimmen einer Einspritzvorrichtung |
PCT/EP1998/006644 WO2000020755A1 (de) | 1998-10-02 | 1998-10-20 | Verfahren zum elektronischen trimmen einer einspritzvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1117930A1 true EP1117930A1 (de) | 2001-07-25 |
EP1117930B1 EP1117930B1 (de) | 2003-03-05 |
Family
ID=7883208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98955495A Expired - Lifetime EP1117930B1 (de) | 1998-10-02 | 1998-10-20 | Verfahren zum elektronischen trimmen einer einspritzvorrichtung |
Country Status (8)
Country | Link |
---|---|
US (1) | US6615128B1 (de) |
EP (1) | EP1117930B1 (de) |
JP (1) | JP2002526717A (de) |
AU (1) | AU1230299A (de) |
CA (1) | CA2325392A1 (de) |
DE (2) | DE19845441C2 (de) |
HK (1) | HK1039643A1 (de) |
WO (1) | WO2000020755A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6360161B1 (en) * | 2000-05-04 | 2002-03-19 | Bombardier Motor Corporation Of America | Method and system for fuel injector coefficient installation |
US6549843B1 (en) | 2000-11-13 | 2003-04-15 | Bombardier Motor Corporation Of America | Diagnostic system and method to temporarily adjust fuel quantity delivered to a fuel injected engine |
US6671611B1 (en) | 2000-11-28 | 2003-12-30 | Bombardier Motor Corporation Of America | Method and apparatus for identifying parameters of an engine component for assembly and programming |
US6810844B2 (en) * | 2002-12-10 | 2004-11-02 | Delphi Technologies, Inc. | Method for 3-step variable valve actuation |
FR2857700B1 (fr) * | 2003-07-16 | 2005-09-30 | Magneti Marelli Motopropulsion | Procede de determination en temps reel de la caracteristique de debit d'injecteur de carburant |
EP2527859B1 (de) * | 2004-10-29 | 2016-04-20 | Skyhook Wireless, Inc. | Standortbakendatenbank und Server, Verfahren zum Aufbau einer Standortbakendatenbank und standortbasierter Dienst damit |
DE102008051820B4 (de) * | 2008-10-15 | 2016-02-18 | Continental Automotive Gmbh | Verfahren zur Korrektur von Einspritzmengen bzw. -dauern eines Kraftstoffinjektors |
KR102038408B1 (ko) * | 2012-10-25 | 2019-10-30 | 삼성전자주식회사 | 회귀 분석법을 사용하는 메모리 시스템 및 그것의 읽기 방법 |
DE102015015153B4 (de) | 2015-11-25 | 2019-10-17 | Dräger Safety AG & Co. KGaA | Verfahren zur Überprüfung einer Pumpeneinrichtung in einem Gasmessystem |
US11767782B2 (en) | 2018-05-25 | 2023-09-26 | Cummins Emission Solutions Inc. | Reductant dosing system with calibration value determined based on data from pressure sensor assembly and method of calibrating a reductant dosing system |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1052172A (de) * | 1963-02-05 | 1900-01-01 | ||
US4790277A (en) * | 1987-06-03 | 1988-12-13 | Ford Motor Company | Self-adjusting fuel injection system |
DE3914723C1 (en) * | 1989-05-04 | 1990-06-13 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | IC engine tuning system - incorporates test stand with brake and iterative optimisation procedure is performed |
DE4015258C2 (de) * | 1990-05-12 | 1999-09-09 | Audi Ag | Steuerung der Einspritzung eines Ottomotors |
DE4106015A1 (de) * | 1991-02-26 | 1992-08-27 | Ficht Gmbh | Druckstoss-kraftstoffeinspritzung fuer verbrennungsmotoren |
AU667345B2 (en) * | 1992-03-04 | 1996-03-21 | Ficht Gmbh & Co. Kg | Fuel injection device working according to the solid energy accumulator principal, for internal combustion engines |
US5265576A (en) * | 1993-01-08 | 1993-11-30 | Stanadyne Automotive Corp. | Calibration system for electrically controlled fuel injection pump |
GB2277818A (en) * | 1993-05-08 | 1994-11-09 | Ford Motor Co | Dedicated control module for a fuel pump |
US5634448A (en) * | 1994-05-31 | 1997-06-03 | Caterpillar Inc. | Method and structure for controlling an apparatus, such as a fuel injector, using electronic trimming |
US5505180A (en) * | 1995-03-31 | 1996-04-09 | Ford Motor Company | Returnless fuel delivery mechanism with adaptive learning |
US5946911A (en) * | 1997-01-07 | 1999-09-07 | Valeo Electrical Systems, Inc. | Fluid control system for powering vehicle accessories |
US5927253A (en) * | 1998-02-26 | 1999-07-27 | Ford Global Technologies, Inc. | Fuel system priming method |
US6158416A (en) * | 1998-11-16 | 2000-12-12 | General Electric Company | Reduced emissions elevated altitude speed control for diesel engines |
US6148809A (en) * | 2000-01-10 | 2000-11-21 | Cinquegrani; Vincent J. | Oxygen sensor controlled continuous flow fuel system |
US6539299B2 (en) * | 2000-02-18 | 2003-03-25 | Optimum Power Technology | Apparatus and method for calibrating an engine management system |
-
1998
- 1998-10-02 DE DE19845441A patent/DE19845441C2/de not_active Expired - Fee Related
- 1998-10-20 DE DE59807422T patent/DE59807422D1/de not_active Expired - Fee Related
- 1998-10-20 CA CA002325392A patent/CA2325392A1/en not_active Abandoned
- 1998-10-20 WO PCT/EP1998/006644 patent/WO2000020755A1/de active IP Right Grant
- 1998-10-20 JP JP2000574834A patent/JP2002526717A/ja active Pending
- 1998-10-20 US US09/806,061 patent/US6615128B1/en not_active Expired - Lifetime
- 1998-10-20 EP EP98955495A patent/EP1117930B1/de not_active Expired - Lifetime
- 1998-10-20 AU AU12302/99A patent/AU1230299A/en not_active Abandoned
-
2002
- 2002-01-23 HK HK02100538.7A patent/HK1039643A1/zh unknown
Non-Patent Citations (1)
Title |
---|
See references of WO0020755A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19845441A1 (de) | 2000-04-13 |
DE59807422D1 (de) | 2003-04-10 |
US6615128B1 (en) | 2003-09-02 |
WO2000020755A1 (de) | 2000-04-13 |
DE19845441C2 (de) | 2003-01-16 |
JP2002526717A (ja) | 2002-08-20 |
AU1230299A (en) | 2000-04-26 |
EP1117930B1 (de) | 2003-03-05 |
CA2325392A1 (en) | 2000-04-13 |
HK1039643A1 (zh) | 2002-05-03 |
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