EP1317609A1 - Method and electronic control unit for controlling the regeneration of a fuel vapour accumulator in internal combustion engines - Google Patents
Method and electronic control unit for controlling the regeneration of a fuel vapour accumulator in internal combustion enginesInfo
- Publication number
- EP1317609A1 EP1317609A1 EP01971660A EP01971660A EP1317609A1 EP 1317609 A1 EP1317609 A1 EP 1317609A1 EP 01971660 A EP01971660 A EP 01971660A EP 01971660 A EP01971660 A EP 01971660A EP 1317609 A1 EP1317609 A1 EP 1317609A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank ventilation
- internal combustion
- combustion engine
- rate
- operating 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
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
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3076—Controlling fuel injection according to or using specific or several modes of combustion with special conditions for selecting a mode of combustion, e.g. for starting, for diagnosing
-
- 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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
- F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0215—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission
- F02D41/023—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission in relation with the gear ratio shifting
-
- 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
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
- F02D41/3023—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode
- F02D41/3029—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode further comprising a homogeneous charge spark-ignited mode
-
- 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
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3064—Controlling fuel injection according to or using specific or several modes of combustion with special control during transition between modes
-
- 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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
- F02D41/0045—Estimating, calculating or determining the purging rate, amount, flow or concentration
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/0275—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a NOx trap or adsorbent
Definitions
- the fuel vapor intermediate storage can be used as
- Activated carbon filter can be realized. It absorbs evaporating fuel vapor in the tank.
- the activated carbon filter is regenerated by flushing with air.
- the purge air flows through the activated carbon filter, absorbs fuel there and is fed to the internal combustion engine as a regeneration gas loaded with fuel.
- the regeneration of the activated carbon filter by flushing with air takes place, for example, by opening a tank ventilation valve between the activated carbon filter and the intake manifold of the internal combustion engine. In this case, the intake manifold vacuum acts as a driving force for flushing the filter through a fresh air opening.
- the regeneration gas loaded with fuel flows to the combustion engine via the tank ventilation valve following the pressure drop.
- Known methods only provide regeneration in certain operating states of the engine. In the case of engines with direct petrol injection, operation with a homogeneous distribution of the fuel / air mixture in the combustion chambers is particularly suitable, since the regeneration gas also enters the combustion chambers as a homogeneous mixture of fuel and air.
- the lean operation with stratified charge distribution favored in the gasoline direct injection engine is less suitable because the premixed regeneration gas impairs the injection-stratified charge stratification.
- the activated carbon filter may therefore not be regenerated for a long period of time during long-term operation with stratified charge if the engine is operated in stratified mode for a long time. If this time exceeds a threshold, one follows the US script
- the activated carbon filter may be heavily or weakly loaded with fuel.
- the regeneration gas can contain strong or weak fuel in a subsequent regeneration after a longer phase with inactive tank ventilation.
- the regeneration gas is very fuel-rich when the regeneration begins, the total amount of fuel supplied to the engine is so large that undesirable HC emissions can occur.
- the invention aims to include the supply of regeneration gas in internal combustion engines
- the invention discloses a method for controlling a tank ventilation valve between an internal combustion engine and a fuel vapor accumulator, wherein the stored fuel vapor from the fuel vapor accumulator is supplied to the internal combustion engine when the tank ventilation valve is open.
- a distinction is made between phases of active and inactive tank ventilation, and the opening state of the tank ventilation valve is specified by a fuel specification means, depending on the first operating parameters of the engine and / or the tank ventilation system, and limited by a purge rate limiting means dependent on second operating parameters or by an active tank ventilation a spool rate specification means dependent on second operating parameters is specified and / or limited by a flow factor dependent on third operating parameters.
- One embodiment provides that the first operating parameters of the engine and / or the
- Tank ventilation system Values for the speed and at least one of the following operating parameters include: - torque,
- Another embodiment provides that the second operating parameters include the integral value of the mass flow via the tank ventilation valve.
- Another embodiment provides that the third operating parameters depend at least on the speed and the quotient of the intake manifold pressure and the ambient pressure.
- the invention further relates to a method for controlling a tank ventilation valve between an internal combustion engine and a fuel vapor accumulator, the stored fuel vapor from the fuel vapor accumulator being fed to the internal combustion engine when the tank ventilation valve is open, the internal combustion engine being coupled to a torque converter whose transmission ratio can be changed during operation of the internal combustion engine, and in which, during a change in the gear ratio, there is a temporary reduction in the torque delivered by the internal combustion engine, which is characterized in that the tank ventilation valve is temporarily closed when the gear ratio changes, with a reduction in the torque supplied by the internal combustion engine.
- a further embodiment provides that the flushing rate is defined as the quotient of the mass flow through the tank ventilation valve and the total mass flow into the intake manifold.
- the limitation of the flushing rate is lifted when the time during which the reduction was effective exceeds a predetermined threshold.
- a further embodiment provides that the limitation of the purge rate is lifted when a measure of the amount of regeneration gas flowing to the engine exceeds a threshold value.
- the measure mentioned is made dependent on the integral of the mass flow via the tank ventilation valve or on the integral via the flushing rate.
- a further embodiment provides an application in an internal combustion engine with gasoline direct injection, the tank ventilation being limited even if undesired high lambda deviations occur during active tank ventilation.
- a further embodiment provides that the relative change in the low-pass filtered lambda setpoint is evaluated, and that the limitation of the tank ventilation due to undesirable high lambda deviations takes place only when the relative change in the low-pass filtered lambda setpoint is less than a predetermined threshold.
- the invention is also directed to an electronic one
- Control device for performing at least one of the methods and embodiments.
- phase of active and inactive tank ventilation is specified by a fuel specification means and limited by a purge rate limitation means or specified by a spool rate specification means depending on the operating parameters of the engine and / or the tank ventilation system. If the duration of the phase with inactive tank ventilation exceeds a minimum duration, the flushing rate in the subsequent phase with active tank ventilation will temporarily drop below that of Rinsing rate limiting means or rinsing rate setting means limits the predetermined rate.
- Activated carbon filter which has occurred during a long phase with inactive tank ventilation, leads to an undesirably high increase in the total fuel flow to the internal combustion engine. This can make an undesirable increase in HC emissions inactive after long periods
- Tank ventilation can be avoided without having to reduce the desired high regeneration rates after shorter periods of inactive tank ventilation.
- FIG. 1 shows the technical environment of the invention.
- 2 discloses an embodiment of the invention in the form of functional blocks.
- FIG. 3 shows a modification of the exemplary embodiment in FIG. 2.
- the 1 in FIG. 1 represents the combustion chamber of a cylinder of an internal combustion engine.
- the inflow of air to the combustion chamber is controlled via an inlet valve 2.
- the air is sucked in via a suction pipe 3.
- the amount of intake air can be varied via a throttle valve 4, which is controlled by a control unit 5.
- the control unit is supplied with signals about the driver's torque, for example about the position of an accelerator pedal 6, a signal about the engine speed n from a speed sensor 7 and a signal about the amount ml of the intake air from an air flow meter 8.
- an intake manifold pressure sensor 8a and / or a throttle valve position sensor 8b is provided for air volume measurement.
- filling detection is also used.
- filling describes the amount of air related to the filling of a single cylinder. In a first approximation, this is the measured air volume divided by the number of cylinders and the speed and thus standardized to one stroke.
- control unit 5 From these and possibly other input signals via further parameters of the internal combustion engine such as intake air and coolant temperature and so on, the control unit 5 forms output signals for setting the throttle valve angle alpha by means of an actuator 9 and for controlling one
- Fuel injection valve 10 through which fuel is metered into the combustion chamber of the engine.
- the Control unit controls the triggering of the ignition via an ignition device 11.
- the control unit also controls a tank ventilation .12 and other functions to achieve efficient
- the tank ventilation system 12 consists of a
- Activated carbon filter 15 which communicates with the tank, the ambient air and the intake manifold of the internal combustion engine via corresponding lines or connections, a tank ventilation valve 16 being arranged in the line to the intake manifold.
- the activated carbon filter 15 stores evaporating fuel in the tank 19.
- air is drawn from the environment 17 through the activated carbon filter, which in the process removes the stored one
- This fuel-air mixture also known as a tank ventilation mixture or also as a regeneration gas, influences the composition of the mixture supplied to the internal combustion engine as a whole, which is also determined by a metering of fuel via the fuel metering device 10 which is adapted to the amount of air sucked in.
- the fuel drawn in via the tank ventilation system can correspond to a proportion of approximately one third to half of the total fuel quantity.
- 2 shows a functional block diagram of an example of the method according to the invention for controlling the tank ventilation valve.
- Block 2.1 represents a fuel rate specification means, which can be implemented, for example, as a map memory.
- the fuel rate is initially determined depending on the engine's operating point.
- the fuel fraction is converted in block 2.2 into a purge rate, which is limited to a working point-dependent maximum value by a purge rate limiting means 2.3.
- the fuel rate can be defined as the quotient of the fuel supplied via the tank ventilation valve and the total fuel supplied to the combustion
- the purge rate can be defined as the quotient of the mass flow through the tank ventilation valve and the total mass flow into the intake manifold.
- the operating point is defined by engine operating parameters such as speed, torque, required fuel mass, intake air temperature, mixture composition and charge distribution in the combustion chamber.
- Operating parameters are partially specified by the control unit and / or detected by sensors. For example, the control unit determines whether the engine is to be operated in the operating mode with homogeneous charge distribution or in the operating mode with stratified charge distribution.
- the torque is determined by the control unit from operating parameters such as speed and intake air volume, Intake air temperature, throttle valve angle, intake manifold pressure and so on are formed.
- the mixture composition can be calculated from the variables present in the control unit, such as the fuel flow via the injection valves and the cylinder charge, or can be determined by measurement using an exhaust gas probe.
- a fuel rate specification and a purging rate limiting means specifies suitable fuel and purge rates depending on the operating point.
- the flushing rate is converted in block 2.2 into a control duty ratio for the tank ventilation valve 16.
- the mass flow mdk via the throttle valve of the engine can be included in the calculation in order to first determine a desired mass flow via the tank ventilation valve from the flushing rate. This function is performed by the
- Block 2.4 represents. If the purge rate is 20%, for example, and the mass flow through the throttle valve is 4 kg / hour, this results in a desired mass flow via the tank ventilation valve of 1 kg / hour.
- An opening pulse duty factor suitable for this flow rate for controlling the tank ventilation valve can be obtained, for example, from a map which also takes into account the pressure difference between the intake manifold and the tank ventilation system. The pressure difference mentioned can in turn be estimated from the intake manifold pressure psaug measured or modeled in the control unit. The drive signal determined in this way is temporarily limited according to the invention.
- a minimum selection (block 2.3.1) between the maximum value of the flushing rate read from a characteristic diagram (block 2.3.2) and a limit value of the flushing rate from block 2.3.3 is suitable for this purpose.
- the limit value can be obtained from a characteristic curve (block 2.3.3), which is addressed with the integral value of the mass flow via the tank ventilation valve (block 2.3.4), the integral value being controlled by the controller 2.6 in phases of inactive tank ventilation which exceed a minimum duration is reset to zero.
- the mass flow via the tank ventilation valve can be determined, for example, from the real flushing rate, which is also shown in block 2.4. is supplied, and determine the mass flow mdk via the throttle valve.
- the reduction is triggered when the length of an operating phase without opening the Tank vent valve exceeds a predetermined value.
- the changeover between active and inactive tank ventilation is controlled by a sequence control 2.6.
- the flow control also uses the mass flow
- Tank vent valve and thus the length of the phases of inactive tank venting detected and compared with a predetermined threshold. If the duration of the inactivity exceeds the time period defined by the predetermined threshold value, the integral value of the mass flow is reset to zero via the tank ventilation valve. In the next active phase of tank ventilation, the purge rate limitation continues until the integral value of the mass flow exceeds the minimum value specified in characteristic curve 2.33.
- the flushing rate itself or its maximum value can be multiplied.
- the time during which the reduction was effective can be used as a criterion for the duration of the reduction. If this time exceeds a predetermined threshold, the reduction is canceled again.
- the flushing rate can also be specified directly.
- tank ventilation In addition to the interventions mentioned, the tank ventilation (TE) is limited in the following operating states: A reduction torque takes effect during gear changeover processes in automatic transmissions, which can lead to injection suppression. To avoid the increase in HC emissions, the TEV is closed when the switchover is requested and only opened again after a delay after the restart of the injection.
- Change in the low-pass filtered lambda setpoint is evaluated and weighted so that only small values lead to a limit value control intervention, but larger values are interpreted as a change in operating point.
- Control signal Bmager a limitation map 2.8 instead of a fixed value (100%) on a minimum selection 2.10.
- a further limiting characteristic diagram 2.9 is given by the quotient of the pressures Ps (intake manifold pressure) and pressure in the tank ventilation system Pu (approximately equal to that
- Block 2.10 there is a minimum selection between the output variables of the characteristic diagrams, in block 2.11 a flow factor is formed.
- Block 2.11 is in the structure of Figure 2 between the block 2.2 and the block 2.4 arranged so that the intervention via the flow factor acts as an additional or supplementary limitation.
- BDE-specific To regenerate the NOx storage catalytic converter, which is regularly required, the vehicle is operated with a rich mixture that can reach lambda values of up to 0.7. Since the measuring accuracy of the lambda probe is not sufficient in this area, the loading of the regeneration gas cannot be adapted if the TE occurs at the same time. To avoid switching to controlled TE with a very low purge rate, which usually takes place in this lambda range, the purge rate of the tank ventilation is reduced by means of an applicable factor when the NOx storage catalytic converter is regenerated with lambda values of less than a threshold.
- the loading of the regeneration gas is divided into the areas low, medium, high and, depending on this, only certain operating modes and changes are allowed. Regardless of this, when switching between from
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (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 |
---|---|---|---|
DE10043862A DE10043862A1 (en) | 2000-09-04 | 2000-09-04 | Method for controlling the regeneration of a fuel vapor buffer in internal combustion engines |
DE10043862 | 2000-09-04 | ||
PCT/DE2001/003292 WO2002020960A1 (en) | 2000-09-04 | 2001-08-31 | Method and electronic control unit for controlling the regeneration of a fuel vapour accumulator in internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1317609A1 true EP1317609A1 (en) | 2003-06-11 |
EP1317609B1 EP1317609B1 (en) | 2008-01-16 |
Family
ID=7655158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01971660A Expired - Lifetime EP1317609B1 (en) | 2000-09-04 | 2001-08-31 | Method and electronic control unit for controlling the regeneration of a fuel vapour accumulator in internal combustion engines |
Country Status (9)
Country | Link |
---|---|
US (1) | US6755185B2 (en) |
EP (1) | EP1317609B1 (en) |
JP (1) | JP2004508482A (en) |
KR (1) | KR20020054336A (en) |
CN (1) | CN1388855A (en) |
BR (1) | BR0107170A (en) |
DE (2) | DE10043862A1 (en) |
ES (1) | ES2296801T3 (en) |
WO (1) | WO2002020960A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10043071A1 (en) * | 2000-09-01 | 2002-03-14 | Bosch Gmbh Robert | Procedure for diagnosing the tank vent valve |
DE10150420A1 (en) * | 2001-10-11 | 2003-04-30 | Bosch Gmbh Robert | Method for checking the functionality of a tank ventilation valve of a tank ventilation system |
US7347192B2 (en) * | 2004-09-17 | 2008-03-25 | Continential Automotive Systems Us, Inc. | Low power consumption latch circuit including a time delay for a fuel vapor pressure management apparatus |
DE102006004837B4 (en) * | 2006-02-02 | 2011-12-22 | Continental Automotive Gmbh | Method and device for operating an internal combustion engine |
KR100936983B1 (en) * | 2008-05-07 | 2010-01-15 | 현대자동차주식회사 | Vapor gas control system and mehtod thereof |
US9624876B2 (en) * | 2014-09-04 | 2017-04-18 | Ford Global Technologies, Llc | Methods and systems for fuel vapor metering via voltage-dependent solenoid valve on duration compensation |
DE102015213255A1 (en) * | 2015-07-15 | 2017-01-19 | Robert Bosch Gmbh | Method for adapting a transverse coupling of a tank ventilation system |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3502573C3 (en) | 1985-01-26 | 2002-04-25 | Bosch Gmbh Robert | Device for venting fuel tanks |
DE59000761D1 (en) * | 1990-04-12 | 1993-02-25 | Siemens Ag | TANK BLEEDING SYSTEM. |
US5323751A (en) * | 1990-07-13 | 1994-06-28 | Toyota Jidosha Kabushiki Kaisha | Device for controlling operation of fuel evaporative purge system of an internal combustion engine |
JP2734241B2 (en) * | 1991-08-23 | 1998-03-30 | トヨタ自動車株式会社 | Fuel supply control device for internal combustion engine |
JP3279371B2 (en) | 1993-01-29 | 2002-04-30 | マツダ株式会社 | Engine evaporative fuel control system |
JP3362270B2 (en) * | 1994-06-27 | 2003-01-07 | マツダ株式会社 | Evaporative fuel processor for engine |
JP3141767B2 (en) * | 1996-01-19 | 2001-03-05 | トヨタ自動車株式会社 | Evaporative fuel treatment system for internal combustion engine |
JP3154324B2 (en) * | 1996-05-15 | 2001-04-09 | トヨタ自動車株式会社 | Evaporative fuel treatment system for internal combustion engine |
US6012435A (en) | 1996-07-31 | 2000-01-11 | Nissan Motor Co., Ltd. | Engine combustion controller |
JP3651133B2 (en) * | 1996-08-27 | 2005-05-25 | 株式会社デンソー | Air-fuel ratio control device for internal combustion engine |
DE19701353C1 (en) * | 1997-01-16 | 1998-03-12 | Siemens Ag | Motor vehicle IC engine fuel-tank ventilation |
US6041761A (en) * | 1997-05-30 | 2000-03-28 | Honda Giken Kogyo Kabushiki Kaisha | Evaporative emission control system for internal combustion engines |
CA2340105C (en) * | 1998-08-10 | 2005-10-11 | Toyota Jidosha Kabushiki Kaisha | Evaporated fuel treatment device of an engine |
-
2000
- 2000-09-04 DE DE10043862A patent/DE10043862A1/en not_active Withdrawn
-
2001
- 2001-08-31 ES ES01971660T patent/ES2296801T3/en not_active Expired - Lifetime
- 2001-08-31 CN CN01802658A patent/CN1388855A/en active Pending
- 2001-08-31 BR BR0107170-0A patent/BR0107170A/en not_active Application Discontinuation
- 2001-08-31 WO PCT/DE2001/003292 patent/WO2002020960A1/en active IP Right Grant
- 2001-08-31 US US10/129,470 patent/US6755185B2/en not_active Expired - Fee Related
- 2001-08-31 JP JP2002525348A patent/JP2004508482A/en active Pending
- 2001-08-31 KR KR1020027005643A patent/KR20020054336A/en not_active Application Discontinuation
- 2001-08-31 DE DE50113514T patent/DE50113514D1/en not_active Expired - Lifetime
- 2001-08-31 EP EP01971660A patent/EP1317609B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0220960A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20030051716A1 (en) | 2003-03-20 |
JP2004508482A (en) | 2004-03-18 |
KR20020054336A (en) | 2002-07-06 |
CN1388855A (en) | 2003-01-01 |
DE10043862A1 (en) | 2002-03-14 |
WO2002020960A1 (en) | 2002-03-14 |
DE50113514D1 (en) | 2008-03-06 |
BR0107170A (en) | 2002-06-18 |
ES2296801T3 (en) | 2008-05-01 |
EP1317609B1 (en) | 2008-01-16 |
US6755185B2 (en) | 2004-06-29 |
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