CN100360783C - Method and device for controlling an actuator - Google Patents
Method and device for controlling an actuator Download PDFInfo
- Publication number
- CN100360783C CN100360783C CNB038033984A CN03803398A CN100360783C CN 100360783 C CN100360783 C CN 100360783C CN B038033984 A CNB038033984 A CN B038033984A CN 03803398 A CN03803398 A CN 03803398A CN 100360783 C CN100360783 C CN 100360783C
- Authority
- CN
- China
- Prior art keywords
- pressure
- time
- oil spout
- voltage
- controlling element
- 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 - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000446 fuel Substances 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 47
- 239000000295 fuel oil Substances 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 abstract description 16
- 239000007924 injection Substances 0.000 abstract description 16
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 31
- 238000012937 correction Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
Images
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
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
-
- 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
- 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
- F02D41/2422—Selective use of one or more tables
-
- 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
- F02D2200/0604—Estimation of fuel pressure
-
- 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
- F02D2200/0606—Fuel temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/04—Fuel pressure pulsation in common rails
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a device and method for controlling an actuator, especially a piezo actuator which is sued to control the injection of fuel into an internal combustion engine. The voltage value at which the actuator is impinged upon during control, is dependent upon the distance between a first partial injection and a second partial injection.
Description
Technical field
The present invention relates to a kind of method and a kind of device of controlling final controlling element of controlling final controlling element, wherein said method is used for controlling the final controlling element of the fuel oil that sprays into internal-combustion engine, wherein, the magnitude of voltage that is added to this final controlling element in control procedure is relevant with at least one Operational Limits of internal-combustion engine, described device is used for controlling the final controlling element of the fuel oil that sprays into internal-combustion engine, wherein, the magnitude of voltage that is added in control procedure on this final controlling element is relevant with at least one Operational Limits of internal-combustion engine.
Background technique
EP 1138904 discloses a kind of controlling method and device of piezo actuator.This final controlling element preferably is used for controlling fuel oil and sprays in the internal-combustion engine.Wherein, the beginning of control and control endurance are determined the beginning and the endurance of fuel metering.The magnitude of voltage that final controlling element is opened and/or closed depends on different Operational Limitss, for example fuel pressure.So this magnitude of voltage depends on temperature and fuel pressure in prior art.
In newer fuel metering system, particularly in the so-called injection system of going the same way, part oil spout is repeatedly usually carried out in oil spout circulation.Preferably carry out once pre-oil spout and a main jet oil.When pre-end of injection, in corresponding spray bar, causing pressure wave, with the main jet oil that does not have pre-oil spout and main jet oil ratio that pre-oil spout arranged, next main jet oil produces that pressure increases or pressure descends.So under constant situation of the control endurance of supposition main jet oil, the amount of fuel that sprays into changes.
In order to eliminate this influence, DE 19712143 suggestions are determined the corrected value that a calibrating (base measuring) pressure value is used according to the interval between pre-oil spout and the main jet oil and the amount of fuel of pre-oil spout metering.Calculate the actual control endurance according to this corrected force value then.By this method, eliminated because the variation of the control endurance of main jet oil causes the influence of the pressure-accumulating tube variation in pressure that pressure wave produces.
Under general piezoelectric injector situation, because final controlling element is to carry out remaining on its position of opening or be in this state of opening with a control valve of work facing to pressure-accumulating tube pressure, so required for this reason magnitude of voltage depends on pressure-accumulating tube pressure.In order to eliminate the influence of pressure surge, can select this magnitude of voltage like this, even make this voltage when the pressure-accumulating tube pressure of maximum possible, also be enough to open this control valve.The shortcoming of this method is, produces unnecessary energy loss thus in control valve, even because when not needing voltage, also must provide higher voltage.In addition, higher voltage causes that control valve greatly also causes the increase of wearing and tearing thus than the power that needs.
Summary of the invention
In method according to control final controlling element of the present invention, described final controlling element is used for controlling the fuel oil that sprays into internal-combustion engine, wherein, the magnitude of voltage that is added to this final controlling element in control procedure is relevant with at least one Operational Limits of internal-combustion engine, it is characterized by, this magnitude of voltage is relevant with the interval of part oil spout for the first time and part oil spout for the second time.
In device according to control final controlling element of the present invention, described final controlling element control sprays into the fuel oil of internal-combustion engine, wherein, the magnitude of voltage that is added in control procedure on this final controlling element is relevant with at least one Operational Limits of internal-combustion engine, it is characterized by, be provided with the mechanism of the relevant magnitude of voltage in interval given in advance and part oil spout for the first time and part oil spout for the second time.
Magnitude of voltage by the control sparger depends on that interval between first portion's oil spout and the second portion oil spout can improve the wearing and tearing of energy conduction and loss balancing, minimizing sparger and guarantee reliably opening and keeping of control valve.
Description of drawings
Below in conjunction with embodiments more shown in the drawings the present invention is described.Accompanying drawing illustrates:
Fig. 1 illustrates process steps of the present invention with Block Diagram.
Embodiment
In Fig. 1, represent process steps of the present invention with Block Diagram.A control unit 100 provides different signals to a final stage 110, the control of these signal deciding spargers.Particularly, these signals are determined the beginning of fuel metering and the beginning and the end of endurance or fuel metering.In addition, control unit 100 provides a signal TVE who characterizes the interval between first and second oil spouts to first predetermined value 120.Control unit 100 also provides a signal QVE to second predetermined value 125, the amount of fuel of measuring when being characterized in part oil spout for the first time.In another embodiment, signal QVE is provided by a prober 122.The output signal of first predetermined value 120 is supplied with the output signal of first tie point, 130, the second predetermined values 125 and is then supplied with second tie point 135.
In a scheme, tie point 130 is supplied with another tie point 132.This tie point 132 is supplied with a signal to characterisitic family 150 then.The output signal of characteristic curve 121 arrives second input end of tie point 132, and the pressure signal P of pressure transducer 160 is supplied with this characteristic curve.
In another scheme, tie point 130 and/or tie point 132 are supplied with a signal to characterisitic family 151.The output signal of characterisitic family 151 arrives tie point 190 by a tie point 191.The output signal of characterisitic family 150 arrives second output terminal of tie point 191.In this case, preferably have only pressure signal P to supply with this characterisitic family.
A pressure signal P that is provided by a pressure transducer 160 is sent to second input end of characterisitic family 150.The output signal that the output signal TA of another temperature transducer 170 arrives second characterisitic family, 180, the first characterisitic families 150 then is sent to the input end of this second characterisitic family.The output signal of first characterisitic family 150 and second characterisitic family 180 is supplied with four points of connection 190, and this tie point is supplied with a parameter to final stage 110 again.
In the embodiment of a simplification, second predetermined value 125 and tie point 135 can be cancelled.In this case, the output signal of characteristic curve 145 directly arrives tie point 130.
According to another favourable scheme, the output signal of tie point 130 is supplied with the 3rd tie point 195, and signal P arrives its second input end.In this case, have only the output signal of tie point 195 to arrive characterisitic family 150, at this moment this characterisitic family preferably constitutes as characteristic curve.
Sensor 140,160 and 170 can be designed to the sensor of direct detection corresponding signal.Particularly advantageous is direct signal, but with continuing especially mean value of handling or the numerical value of from other numerical value, deriving.In addition, can consider Equivalence value to these numerical value, this Equivalence value characterizes corresponding numerical value or has similar coherence.So for example the temperature of final controlling element TA can replace by the fuel oil temperature value of directly measuring previously at this final controlling element.
The present invention can consider that the part oil spout causes by the first time pressure wave is to pressure-accumulating tube pressure with to the influence of the final controlling element voltage of needs.This is to realize by the correction to the average pressure-accumulating tube pressure P that has the pressure-accumulating tube variation in pressure that pressure wave causes.The interval T VE of the variation of pressure-accumulating tube pressure P and the end of part oil spout for the first time, the fuel oil temperature TK that surveys with the beginning of the part oil spout second time and with the most handy sensor 140 is relevant.
For this reason, value of storage in first characteristic curve 145, this value is considered the coherence of pressure wave and viscosity.In a preferred embodiment, characteristic curve 145 has also been considered the coherence of pressure wave and pressure-accumulating tube pressure P.
The pressure-wave propagation speed and the velocity of sound and relevant with temperature and pressure P.In first predetermined value 120, store a value, this value is considered the coherence at the interval between pressure wave and the first time and the part oil spout second time.In second predetermined value, the coherence of storage corrected value and the part oil spout first time.
According to these parameters, at tie point 130 with in case of necessity in 135, the most handy multiplication is proofreaied and correct the coefficient relevant with temperature that is stored in the characteristic curve 145.If consider the initial amplitude of pressure wave and the coherence of pressure-accumulating tube pressure P, be particularly advantageous according to pressure-accumulating tube pressure P another correction factor given in advance.
In characterisitic family 150, store the magnitude of voltage relevant with this pressure-accumulating tube pressure P with this value.Proofread and correct once more with a correction factor with final controlling element temperature T A and pressure-accumulating tube pressure correlation in tie point 190, this correction factor is stored in the characterisitic family 180.
According to another program, also can in characterisitic family 150, store the voltage relevant with pressure P.In this case, then in the 3rd tie point 195, proofread and correct with fuel oil temperature TK, with for the first time and the interval T VE between the part oil spout second time and with the relevant pressure signal P of amount of fuel QVE in the part oil spout injection first time.Addition is preferably carried out in this connection in tie point 195.
In the embodiment of another simplification, only consider the interval of the TVE of the first time and the part oil spout second time, that is can cancel square 125 and tie point 135.
First prior value 120 considers because the pressure wave that the end of part oil spout for the first time causes.So, the second time during part fuel injection beginning in esse pressure-accumulating tube pressure pressure increase or pressure descend be with the first time part end of injection relevant to the interval of part fuel injection beginning for the second time.Characteristic curve 145 considers that fuel oil temperature TK are to viscosity with to the influence of pressure-wave emission speed.Predetermined value 125 is then considered the influence of the fuel injection quantity of last part oil spout to pressure wave amplitude.Another kind of way is also available another parameter of fuel injection quantity to be characterized the amount of fuel of ejection.A parameter so for example is the control endurance.In this case, the available electrical control endurance, interval between the control that it is equivalent to regulating element begins and finishes, and/or available hydraulic control endurance, it is equivalent to the interval between the opening and closing of this regulating element and/or a control valve.
In the embodiment of representing with solid line, in characterisitic family 150, store the final controlling element voltage relevant with the corrected output signal of pressure-accumulating tube pressure and characteristic curve 145.In another embodiment, characterisitic family 151 is according to a corrected value of characteristic curve 145 corrected output signals final controlling element voltage given in advance.That is according to a correction voltage of pressure amplitude calculating of calculating.
Describe the calculating of the corrected value of the pressure wave of describing pressure-accumulating tube pressure below in detail.First predetermined value 120 is described the characteristic of a definite sparger and the pressure wave of corresponding part under standard conditions, all is certain as standard conditions supposition fuel oil temperature, amount of fuel and pressure-accumulating tube pressure.In other words, in first predetermined value 120, stored one to the basic value of the pressure amplitude of the time point of part fuel injection beginning for the second time the function of time as the time lag TVE of twice part oil spout.Consider by different corrections with the deviation of standard conditions.
The temperature T K of fuel oil and pressure-accumulating tube pressure P influence especially pressure wave frequency of the velocity of sound and pressure-wave propagation, and this influence is considered by a corresponding coefficient that is provided by characteristic curve 145.
Clearly, pressure wave is by first portion's fuel injection beginning and the stack of each the dividing potential drop Reeb when finishing produces.Phase displacement between these two dividing potential drop Reebs and the combined pressure Reeb is relevant with the hydraulic pressure endurance of part oil spout for the first time.Usually for the first time the hydraulic pressure endurance of part oil spout is unknown, so characterize the parameter of injection oil mass as parameter or with another with the electrical control endurance.In predetermined value 125, carry out the calculating of this correction.
The initial amplitude of pressure wave is main relevant with the pressure-accumulating tube pressure P.This influence is considered by characteristic curve 121.
The corrected basic value of pressure amplitude be equivalent to according to the second time part fuel injection beginning the error of the pressure wave measured of time point as the function of twice part injection interval and other corrected value.
The basic value of corrected like this pressure amplitude can use as the input value of characterisitic family 150 and/or as the input value of characterisitic family 151 according to the correcting scheme of the pressure signal P in the tie point 195.Characterisitic family 150 provides the final controlling element voltage relevant with the corrected basic value of pressure amplitude with pressure P.This characterisitic family provides a corrected value of final controlling element voltage according to the corrected basic value of pressure amplitude.
Except that above-mentioned numerical value, also can consider other numerical value and influence.Shown characteristic curve can be used as characterisitic family and constitutes.
Claims (8)
1. method of controlling final controlling element, described final controlling element is used for controlling the fuel oil that sprays into internal-combustion engine, wherein, the magnitude of voltage that is added to this final controlling element in control procedure is relevant with at least one Operational Limits of internal-combustion engine, it is characterized by, this magnitude of voltage is relevant with the interval of part oil spout for the first time and part oil spout for the second time.
2. by the described method of claim 1, it is characterized by, this magnitude of voltage interval with part oil spout for the first time and part oil spout for the second time when the control of the part oil spout second time is relevant.
3. by claim 1 or 2 described methods, it is characterized by, this magnitude of voltage is relevant with a temperature value when the control of the part oil spout second time.
4. by the described method of claim 3, it is characterized by, this magnitude of voltage is when the control of the part oil spout second time and fuel oil temperature and/or final controlling element temperature correlation.
5. by aforementioned claim 1 or 2 described methods, it is characterized by, this magnitude of voltage is relevant with the amount of fuel of measuring when the first time part oil spout when the control of the part oil spout second time.
6. by the described method of claim 1, it is characterized by, described final controlling element is a piezo actuator.
7. device of controlling final controlling element, described final controlling element control sprays into the fuel oil of internal-combustion engine, wherein, the magnitude of voltage that is added in control procedure on this final controlling element is relevant with at least one Operational Limits of internal-combustion engine, it is characterized by, be provided with the mechanism of the relevant magnitude of voltage in interval given in advance and part oil spout for the first time and part oil spout for the second time.
8. by the described device of claim 7, it is characterized by, described final controlling element is a piezo actuator.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10234847 | 2002-07-31 | ||
| DE10234847.2 | 2002-07-31 | ||
| DE10321999A DE10321999A1 (en) | 2002-07-31 | 2003-05-16 | Actuator drive method, especially for piezoactuator, involves using control voltage dependent on internal combustion engine operating parameter(s), e.g. interval between two partial injections |
| DE10321999.4 | 2003-05-16 | ||
| PCT/DE2003/002133 WO2004016927A1 (en) | 2002-07-31 | 2003-06-26 | Method and device for controlling an actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1628211A CN1628211A (en) | 2005-06-15 |
| CN100360783C true CN100360783C (en) | 2008-01-09 |
Family
ID=31889087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038033984A Expired - Fee Related CN100360783C (en) | 2002-07-31 | 2003-06-26 | Method and device for controlling an actuator |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1527265A1 (en) |
| JP (1) | JP2005534862A (en) |
| CN (1) | CN100360783C (en) |
| DE (1) | DE10321999A1 (en) |
| WO (1) | WO2004016927A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004027291B4 (en) * | 2004-06-04 | 2009-11-26 | Continental Automotive Gmbh | Method and device for controlling a valve |
| DE102004052238B4 (en) * | 2004-10-27 | 2007-03-29 | Vw Mechatronic Gmbh & Co. Kg | Method for driving a piezoelectric actuator during a starting phase of an internal combustion engine and device therefor |
| DE102005036190A1 (en) * | 2005-08-02 | 2007-02-08 | Robert Bosch Gmbh | Method and device for controlling an injection system of an internal combustion engine |
| JP4479764B2 (en) * | 2007-08-31 | 2010-06-09 | 株式会社デンソー | Fuel injection control device and fuel injection system using the same |
| DE102010030545B4 (en) * | 2010-06-25 | 2016-12-08 | Continental Automotive Gmbh | Method for controlling a fuel injection system of an internal combustion engine |
| FR2990998B1 (en) * | 2012-05-23 | 2016-02-26 | Continental Automotive France | METHOD FOR CONTROLLING AT LEAST ONE PIEZOELECTRIC FUEL INJECTOR ACTUATOR OF AN INTERNAL COMBUSTION ENGINE |
| JP6981173B2 (en) | 2017-10-24 | 2021-12-15 | 株式会社デンソー | Fuel injection control device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266888A (en) * | 1997-03-22 | 1998-10-06 | Robert Bosch Gmbh | Method and device for controlling internal combustion engine |
| EP1138904A1 (en) * | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Method and apparatus for charging a piezoelectric element |
| WO2001073282A1 (en) * | 2000-03-24 | 2001-10-04 | Robert Bosch Gmbh | Method for determining the rail pressure of an injection valve having an piezoelectric actuator |
| JP2002161788A (en) * | 2000-11-30 | 2002-06-07 | Denso Corp | Fuel injection device for internal combustion engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19903555C2 (en) * | 1999-01-29 | 2001-05-31 | Daimler Chrysler Ag | Device for controlling a piezo element injection valve |
| DE19937148B4 (en) * | 1999-08-06 | 2012-12-27 | Robert Bosch Gmbh | Method for determining the fuel injection quantities |
| DE10002270C1 (en) * | 2000-01-20 | 2001-06-28 | Bosch Gmbh Robert | Valve for controlling liquids has electronic control unit that defines piezoelectric valve element actuating unit drive voltage depending on leakage loss in low pressure region |
| EP1139448B1 (en) * | 2000-04-01 | 2009-10-21 | Robert Bosch GmbH | Method and apparatus for regulating voltages and voltage gradients for driving piezoelectric elements |
| US6752126B2 (en) * | 2000-07-18 | 2004-06-22 | Robert Bosch Gmbh | Method and device for controlling an internal combustion engine |
-
2003
- 2003-05-16 DE DE10321999A patent/DE10321999A1/en not_active Withdrawn
- 2003-06-26 JP JP2004528329A patent/JP2005534862A/en active Pending
- 2003-06-26 EP EP03787610A patent/EP1527265A1/en not_active Withdrawn
- 2003-06-26 CN CNB038033984A patent/CN100360783C/en not_active Expired - Fee Related
- 2003-06-26 WO PCT/DE2003/002133 patent/WO2004016927A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10266888A (en) * | 1997-03-22 | 1998-10-06 | Robert Bosch Gmbh | Method and device for controlling internal combustion engine |
| WO2001073282A1 (en) * | 2000-03-24 | 2001-10-04 | Robert Bosch Gmbh | Method for determining the rail pressure of an injection valve having an piezoelectric actuator |
| EP1138904A1 (en) * | 2000-04-01 | 2001-10-04 | Robert Bosch GmbH | Method and apparatus for charging a piezoelectric element |
| JP2002161788A (en) * | 2000-11-30 | 2002-06-07 | Denso Corp | Fuel injection device for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1527265A1 (en) | 2005-05-04 |
| DE10321999A1 (en) | 2004-02-12 |
| JP2005534862A (en) | 2005-11-17 |
| WO2004016927A1 (en) | 2004-02-26 |
| CN1628211A (en) | 2005-06-15 |
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