EP1396625A2 - Verfahren und Vorrichtung zur Steuerung eines Injektors - Google Patents
Verfahren und Vorrichtung zur Steuerung eines Injektors Download PDFInfo
- Publication number
- EP1396625A2 EP1396625A2 EP03015277A EP03015277A EP1396625A2 EP 1396625 A2 EP1396625 A2 EP 1396625A2 EP 03015277 A EP03015277 A EP 03015277A EP 03015277 A EP03015277 A EP 03015277A EP 1396625 A2 EP1396625 A2 EP 1396625A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- injector
- variable
- actuator
- heat transfer
- 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 description 12
- 239000000446 fuel Substances 0.000 claims abstract description 16
- 108010074506 Transfer Factor Proteins 0.000 claims abstract description 11
- 230000001419 dependent effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006399 behavior Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2065—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control being related to the coil temperature
Definitions
- the invention relates to a method and a device for controlling an injector.
- the electrical energy that is supplied to the injector is preferred determined on the basis of first operating parameters (AN, U, N). These first Operating parameters are preferably the number of controls AN per Unit of time, the speed N and / or the actuator voltage U. In addition to individual or Several of these sizes can be used with other sizes.
- the heat transfer factor is based on second operating parameters (P) determined.
- P second operating parameters
- Figures 1 and 2 each show a block diagram of an inventive Embodiment.
- Piezo injectors usually have a hydraulic coupler to to decouple the actuator and the actual control valve from each other. So that will ensures that the different thermal behavior of the two elements does not affect the opening behavior of the control valve.
- Actuator pressure is built up in the coupler to position the control valve. about Leakage gaps become part of the fuel in the coupler pushed out.
- Such piezo actuators have, depending on the choice of those used Piezoceramic, a temperature-dependent lifting capacity. As a result of the changed Lifting capacity, the control voltage of the actuator is tracked. This means at when controlling the actuator, the temperature of the actuator must be taken into account. The determination of the temperature is problematic since it is usually not immediate is measurable on the actuator or only with considerable technical effort Measurement is possible.
- the power loss QZ corresponds to the actuator energy supplied by energy losses.
- FIG. 1 shows a first embodiment of the procedure according to the invention shown.
- a first map 100 is dependent on different ones Input variables that store the thermal energy QZ supplied to the actuator.
- the heat transfer factor KW is dependent on various Operating parameters filed. These two sizes come together
- Junction 115 the output signal DT of the temperature difference between corresponds to the output of the piezo actuator and the piezo actuator.
- This signal arrives at the node 120, at the second input, the output signal of a third map 130 is present.
- the output signal of the third map 130 corresponds the fuel temperature TD. Linking the two temperature values results in the temperature of the actuator TA.
- This signal comes from node 120 to a controller 140, which processes this signal TA further.
- variables are supplied to the first characteristic diagram 100 as input variables, that influence the energy input into the actuator per unit of time.
- This size corresponds the energy losses.
- the essential variable is preferably additionally or alternatively the voltage U, which is at Actuator applied, used.
- the number of Cylinder, the rail pressure and / or the number of partial injections the first map are fed.
- the first map 100 shows the Heat QZ, which is fed to the actuator, stored. This is in essential to the product of the energy loss for a control and the number of Controls per time.
- the heat transfer factor is usually dependent on the second map 110 stored by the rail pressure P and a constant K.
- the constant K takes into account Essentially the geometry and material parameters that determine the heat transfer between determine the actuator module and the fuel.
- the rail pressure P influences the Flow rate of the fuel, which in turn increases heat transfer affected.
- the third characteristic diagram 130 essentially contains a correction model for the Fuel temperature, which the fuel temperature TK and the speed supplied become. Furthermore, other sizes, such as the Ambient temperature and / or the driving speed are taken into account.
- the Actual map or this correction model is provided when the fuel temperature TD not measured directly, but based on other temperature values, such as For example, the fuel temperature in the rail is determined.
- the corresponding sizes can also be used can be determined in a different way on the basis of the input variables.
- the quantities that are supplied to the first, the second and the third characteristic map can be detected directly by means of sensors or are located in the control unit 140 to control the internal combustion engine.
- FIG. 2 shows a further embodiment of the procedure according to the invention shown. This is a simplified embodiment in which the heat transfer factor KW is a constant value and for the temperature TD A measured value is used.
- the thermal energy QZ results from Multiplication of the number of controls per unit of time with the loss of energy per Control, which is preferably specified as a function of the control voltage U.
- the first characteristic map 100 essentially occurs Node 200, on the one hand, the number of actuations per time and the output signal is fed to a characteristic curve 210.
- the characteristic curve 210 determines the Loss energy per control based on at least the actuator voltage U.
- Des the second characteristic map 110 is furthermore a read-only memory 220 and the third Map 130 replaced by a sensor 230 that immediately provides a signal that the temperature at the output of the actuator is determined.
- So block 110 can optionally be changed by read-only memory 220, correction module 130 by the sensor 230 and / or the first map 100 by the blocks 200 and 210 be replaced.
Abstract
Description
Claims (6)
- Verfahren zur Steuerung eines Injektors, bei dem ein Temperaturgröße (TA), die die Temperatur des Injektors charakterisiert, bei der Steuerung berücksichtigt wird, dadurch gekennzeichnet, dass ausgehend von einer ersten Größe (QZ), die die elektrische Energie charakterisiert, die dem Injektor zugeführt wird, einem Wärmeübergangsfaktor (KW), und einer zweiten Größe, die die Kraftstofftemperatur (TD) charakterisiert, die Temperaturgröße (TA) ermittelt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass ausgehend von ersten Betriebsparametern (AN, U, N) die erste Größe (QZ) ermittelt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ausgehend von zweiten Betriebsparametern (P) der Wärmeübergangsfaktor (KW) ermittelt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die dritte Größe ausgehend von einem Messwert der Temperatur (TK) und wenigstens einem weiteren Betriebsparameter (N) ermittelt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, - dass die dritte Größe (TD) mittels eines Sensors erfasst wird.
- Vorrichtung zur Steuerung eines Injektors, bei der eine Temperaturgröße (TA), die die Temperatur des Injektors charakterisiert, bei der Steuerung berücksichtigt wird, dadurch gekennzeichnet, dass Mittel vorgesehen sind, die ausgehend von einer ersten Größe (QZ), die die elektrischen Energie charakterisiert, die dem Injektor zugeführt wird, einem Wärmeübergangsfaktor (KW), und einer zweiten Größe, die die Kraftstofftemperatur (TD) charakterisiert, die Temperaturgröße (TA) ermitteln.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10241506 | 2002-09-07 | ||
DE2002141506 DE10241506A1 (de) | 2002-09-07 | 2002-09-07 | Verfahren und Vorrichtung zur Steuerung eines Injektors |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1396625A2 true EP1396625A2 (de) | 2004-03-10 |
EP1396625A3 EP1396625A3 (de) | 2004-09-08 |
EP1396625B1 EP1396625B1 (de) | 2007-09-26 |
Family
ID=31502469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03015277A Expired - Lifetime EP1396625B1 (de) | 2002-09-07 | 2003-07-07 | Verfahren und Vorrichtung zur Steuerung eines Injektors |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1396625B1 (de) |
JP (1) | JP4348146B2 (de) |
DE (2) | DE10241506A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2672094A1 (de) * | 2012-06-08 | 2013-12-11 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Ansteuerung eines piezoelektrischen Aktors |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5125092B2 (ja) * | 2006-12-19 | 2013-01-23 | 株式会社デンソー | 駆動回路、燃料噴射用圧電素子の駆動回路、および燃料噴射装置 |
DE102008042831A1 (de) | 2008-10-14 | 2010-04-15 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum zur Ermittlung einer Injektortemperatur |
DE102008043594A1 (de) | 2008-11-10 | 2010-05-12 | Robert Bosch Gmbh | Verfahren und Vorichtung zur Ermittlung einer Injektortemperatur |
DE102010042364B4 (de) | 2010-10-13 | 2018-11-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Ermittlung einer Aktortemperatur eines Kraftstoffinjektors für eine Brennkraftmaschine |
DE102015208367A1 (de) | 2015-05-06 | 2016-11-10 | Robert Bosch Gmbh | Verfahren zum Bestimmen der Temperatur eines Piezoaktors |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2719517A1 (de) * | 1976-05-03 | 1977-11-24 | Allied Chem | Kraftstoffeinspritzanlage mit modulation der kraftstoffdichte |
EP0360790A2 (de) * | 1988-09-21 | 1990-03-28 | Robert Bosch Ag | Verfahren und Vorrichtung zur Messung der Kraftstofftemperatur bei einer elektronisch geregelten Brennkraftmaschine |
DE19606965A1 (de) * | 1996-02-24 | 1997-08-28 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung der Kraftstoffzumessung in eine Brennkraftmaschine |
US6148800A (en) * | 1999-04-01 | 2000-11-21 | Daimlerchrysler Corporation | Injection temperature fuel feedback |
-
2002
- 2002-09-07 DE DE2002141506 patent/DE10241506A1/de not_active Withdrawn
-
2003
- 2003-07-07 EP EP03015277A patent/EP1396625B1/de not_active Expired - Lifetime
- 2003-07-07 DE DE50308271T patent/DE50308271D1/de not_active Expired - Lifetime
- 2003-09-04 JP JP2003312847A patent/JP4348146B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2719517A1 (de) * | 1976-05-03 | 1977-11-24 | Allied Chem | Kraftstoffeinspritzanlage mit modulation der kraftstoffdichte |
EP0360790A2 (de) * | 1988-09-21 | 1990-03-28 | Robert Bosch Ag | Verfahren und Vorrichtung zur Messung der Kraftstofftemperatur bei einer elektronisch geregelten Brennkraftmaschine |
DE19606965A1 (de) * | 1996-02-24 | 1997-08-28 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung der Kraftstoffzumessung in eine Brennkraftmaschine |
US6148800A (en) * | 1999-04-01 | 2000-11-21 | Daimlerchrysler Corporation | Injection temperature fuel feedback |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2672094A1 (de) * | 2012-06-08 | 2013-12-11 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Ansteuerung eines piezoelektrischen Aktors |
Also Published As
Publication number | Publication date |
---|---|
JP2004100702A (ja) | 2004-04-02 |
DE10241506A1 (de) | 2004-03-18 |
DE50308271D1 (de) | 2007-11-08 |
EP1396625A3 (de) | 2004-09-08 |
JP4348146B2 (ja) | 2009-10-21 |
EP1396625B1 (de) | 2007-09-26 |
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