EP1185773A1 - Method and device for the control of a fuel injection valve - Google Patents
Method and device for the control of a fuel injection valveInfo
- Publication number
- EP1185773A1 EP1185773A1 EP01915007A EP01915007A EP1185773A1 EP 1185773 A1 EP1185773 A1 EP 1185773A1 EP 01915007 A EP01915007 A EP 01915007A EP 01915007 A EP01915007 A EP 01915007A EP 1185773 A1 EP1185773 A1 EP 1185773A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- phase
- booster
- current
- solenoid
- activated
- 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
- F02D41/20—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
- F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
-
- 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
- F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
- F02D2041/2006—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening by using a boost capacitor
-
- 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
- F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
- F02D2041/2013—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening by using a boost voltage source
Definitions
- the invention relates to a method and a device for actuating a solenoid valve, in particular for fuel injection into an internal combustion engine, the actuation phase of the solenoid valve being in a tightening phase during which a valve needle of the solenoid valve is opened by a first current flowing through a solenoid coil and in a holding phase is subdivided, during which the valve needle is held in the open state by a second, lower current flowing through the magnetic coil, and a booster phase is activated at least once at the beginning of the pull-in phase, in which a pulsed booster current from a booster capacitor charged to a high voltage is activated or another current source flows through the solenoid.
- the current reaches a starting current level I A after the current maximum IB OOS T caused by a first booster phase Bi with a large booster voltage UBO O ⁇ T, through which the valve needle of the solenoid valve can attract.
- the booster voltage UBOO ⁇ T. which is applied to the solenoid valve during the booster phase Bi is much larger than the battery voltage U_.
- the pull-in current level I A is regulated by repeatedly switching the battery voltage UBATT to the solenoid.
- the pull-in phase T A is first followed by a short free-running phase or a quick extinction, during which the current through the solenoid coil of the injection valve decreases very quickly, and reaches a holding current level IH, which is regulated to a desired level during the holding phase T H by repeated pulsing of the battery voltage UBATT , At the end, the holding phase T H is again followed by a free-running phase or quick-release, at the end of which the current through the magnetic coil is completely reduced.
- FIG. 2 now shows the case in which the valve needle cannot tighten during the tightening phase T owing to an insufficient battery voltage ⁇ BATT_: (FIG. 2) ⁇ UBATT (FIG. 1).
- ⁇ BATT_ battery voltage
- ⁇ UBATT ⁇ UBATT
- the level of the current through the injection valve should remain at a high level as much as possible during the entire opening movement of the valve needle in the tightening phase T A.
- a theoretically conceivable long booster phase that can be produced at this high current level over the entire pull-in phase does not make sense because of the high energy consumption from the internal booster capacitor.
- the booster phase serves to achieve a high current level as quickly as possible, with a large proportion of the booster energy being converted into eddy currents at the beginning of the pull-in phase T A.
- the booster phase Bi is interrupted under certain operating conditions in the prior art, the valve current is driven out of the battery and drops. This means that during the actual flight phase, that is the phase during which the valve needle moves, the magnetic force has already dropped from its maximum value. This means poor dynamics of the solenoid valve.
- this object is achieved in that several booster pulses are activated in succession during the actuation phase of the solenoid valve become. Basically, their timing within the control phase is freely selectable.
- a further booster impulse can be activated before or during the flight phase of the valve needle.
- a further booster pulse can be activated at the end or immediately after the valve needle's flight phase.
- a further booster pulse or a plurality of further booster pulses can be activated during the holding phase of the solenoid valve if the voltage of the supply battery is below a certain threshold voltage in this holding phase.
- the multiple boosters can reduce the energy or the maximum current of the individual booster pulses compared to a long individual booster with a very high current.
- a reduced peak current brings a lower load on the bonding pads for integrated circuits, the hybrid assemblies and a smaller storage capacity of the booster capacitor.
- the structure of the magnetic force can be varied freely in time by suitable selection of the times of the second and possibly third booster pulse. This leads to a reduction in eddy current formation, and de booster energy can be supplied depending on the time required for the solenoid valve. As a result, the tearing of the valve needle of the solenoid valve from the lower attachment point can be supported, the needle flight accelerated and the impact bouncer can be suppressed at the upper stop of the valve needle.
- the multiple booster can nevertheless raise the current level and thus ensure safe operation of the high-pressure injection solenoid valve.
- FIG. 1 shows, graphically in the form of a signal-time diagram, the usual course of the current and voltage through or on a solenoid coil of an injection valve in the case of a simple booster.
- FIG. 2 graphically shows the case which has also already been described, when the battery voltage becomes too low in the known method with simple booster.
- FIG. 3A shows, graphically in the form of a signal-time diagram, the current profile through a magnetic coil according to a first exemplary embodiment of the inventive method Double booster.
- FIG. 3B graphically shows the deflection of a valve needle during the activation phase of a high-pressure injection solenoid valve
- FIG. 3C graphically shows the current and voltage curve over the time of a second exemplary embodiment of the invention with triple booster.
- FIG. 3A shows a first exemplary embodiment of the method according to the invention, in which a double booster takes place at a relatively low battery voltage U BATT . That is, After the first booster pulse B_ activated at the beginning of the tightening phase T A , a further booster pulse B 2 ⁇ is activated, which, as a comparison with FIG. 3B showing the deflection X of the valve needle immediately makes clear, takes place during the flight phase f of the valve needle. As a result, the drop in the current through the solenoid shown in dashed lines in FIG. 3A is avoided, so that the control range of the pull-in current control is achieved despite the low battery voltage UBATT and a reliable opening of the valve is ensured.
- the double booster allows the current level to be kept high during the pull-in phase T A even with a low battery voltage U BA T T, and the valve can thereby be opened safely.
- FIG. 3C shows a second exemplary embodiment of the control method according to the invention, in which a third booster pulse B22 is activated immediately after the flight phase after the second booster pulse B 2 , which suppresses the bouncing p of the valve needle at the upper stop.
- a further booster pulse or a plurality of further booster pulses can be activated during the holding phase T H if, due to a high resistance in the circuit, the holding current I H can no longer be applied from the battery ,
- the control method shown in the figure is preferably by a device for controlling a solenoid valve for fuel injection into an internal combustion engine, the control phase of the solenoid valve in a tightening phase, during which a valve needle of the solenoid valve is opened by a first current flowing through a solenoid of the same and divided into a holding phase, during which the valve needle is held in the open state by a second, lower current flowing through the magnetic coil, and which activates a booster phase at least once at the beginning of the pull-in phase and thereby a pulse-shaped booster current from a booster capacitor charged to a high voltage or can flow from another current source through the solenoid, which has means for activating several booster pulses at selectable times within the control phase of the solenoid valve.
- This activation means may be connected with measuring means for measuring at least the suit current intensity X, the holding current I H, the battery voltage UBATT the supply battery, the booster voltage U B oos ⁇ and the booster current strength IBOOST-
- the method according to the invention enables in addition to Securing the operation of a high-pressure injector with low battery voltage by activating several booster pulses and thereby increasing the current level, so that safe opening or keeping of the high-pressure injector is ensured, more economical and variable use of the booster energy by the eddy current generation through the multiple booster is reduced and booster energy is made available depending on the time required.
- This supports the tearing of the valve needle from its lower stop point, accelerates the needle flight and suppresses the impact bouncer at the upper stop of the valve needle.
- the multiple booster can reduce the energy or the maximum current of the individual booster pulse, as a comparison of FIGS. 1 and 2 illustrating the conventional single booster shows. This can reduce the peak load on the bonding islands for the integrated circuits and the hybrid assemblies and the storage capacity of the booster capacitor.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (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 |
---|---|---|---|
DE10014228A DE10014228A1 (en) | 2000-03-22 | 2000-03-22 | Method of controlling a fuel-injection solenoid valve, involves activating a further booster pulse, after the first booster pulse is activated at the commencement of the pick-up phase, before of during movement or the valve needle |
DE10014228 | 2000-03-22 | ||
PCT/DE2001/000499 WO2001071174A1 (en) | 2000-03-22 | 2001-02-09 | Method and device for the control of a fuel injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1185773A1 true EP1185773A1 (en) | 2002-03-13 |
EP1185773B1 EP1185773B1 (en) | 2005-08-31 |
Family
ID=7635912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01915007A Expired - Lifetime EP1185773B1 (en) | 2000-03-22 | 2001-02-09 | Method and device for the control of a fuel injection valve |
Country Status (8)
Country | Link |
---|---|
US (1) | US6785112B2 (en) |
EP (1) | EP1185773B1 (en) |
JP (1) | JP4418616B2 (en) |
KR (1) | KR100757565B1 (en) |
BR (1) | BR0105317A (en) |
DE (2) | DE10014228A1 (en) |
ES (1) | ES2245352T3 (en) |
WO (1) | WO2001071174A1 (en) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003522919A (en) * | 2000-02-16 | 2003-07-29 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | Driving method of solenoid valve and circuit device for driving solenoid valve |
JP2002237410A (en) * | 2001-02-08 | 2002-08-23 | Denso Corp | Solenoid valve driving circuit |
FR2826200B1 (en) * | 2001-06-15 | 2004-09-17 | Sagem | METHOD FOR SUPPLYING ELECTRICAL EQUIPMENT |
JP2004129376A (en) * | 2002-10-02 | 2004-04-22 | Tokyo Weld Co Ltd | Operation control method for electromagnetic drive mechanism |
WO2005093239A1 (en) * | 2004-03-29 | 2005-10-06 | Mitron Oy | Method and device for controlling the fuel supply in a motor |
DE102004063079A1 (en) | 2004-12-28 | 2006-07-06 | Robert Bosch Gmbh | Method for operating an internal combustion engine |
US7013876B1 (en) * | 2005-03-31 | 2006-03-21 | Caterpillar Inc. | Fuel injector control system |
DE102006016892A1 (en) * | 2006-04-11 | 2007-10-25 | Robert Bosch Gmbh | Method for controlling at least one solenoid valve |
EP1903201B1 (en) * | 2006-09-20 | 2017-04-12 | Delphi International Operations Luxembourg S.à r.l. | Valve control strategy and controller |
DE102007023898A1 (en) * | 2007-05-23 | 2008-11-27 | Robert Bosch Gmbh | Method for controlling an injection valve |
GB2450523A (en) * | 2007-06-28 | 2008-12-31 | Woodward Governor Co | Method and means of controlling a solenoid operated valve |
JP4359855B2 (en) * | 2007-07-09 | 2009-11-11 | Smc株式会社 | Solenoid valve drive circuit and solenoid valve |
DE102007045513B4 (en) * | 2007-09-24 | 2015-03-19 | Continental Automotive Gmbh | Method and device for metering a fluid |
JP5053868B2 (en) * | 2008-01-07 | 2012-10-24 | 日立オートモティブシステムズ株式会社 | Fuel injection control device |
JP4815502B2 (en) * | 2009-03-26 | 2011-11-16 | 日立オートモティブシステムズ株式会社 | Control device for internal combustion engine |
JP5198496B2 (en) * | 2010-03-09 | 2013-05-15 | 日立オートモティブシステムズ株式会社 | Engine control unit for internal combustion engines |
DE102010027989A1 (en) * | 2010-04-20 | 2011-10-20 | Robert Bosch Gmbh | A method of operating an internal combustion engine, wherein a solenoid valve is actuated for injecting fuel |
JP5698938B2 (en) * | 2010-08-31 | 2015-04-08 | 日立オートモティブシステムズ株式会社 | Drive device for fuel injection device and fuel injection system |
JP5880296B2 (en) * | 2012-06-06 | 2016-03-08 | 株式会社デンソー | Drive device for fuel injection valve |
DE102013201410B4 (en) | 2013-01-29 | 2018-10-11 | Mtu Friedrichshafen Gmbh | Method for operating an internal combustion engine and corresponding internal combustion engine |
JP5975899B2 (en) * | 2013-02-08 | 2016-08-23 | 日立オートモティブシステムズ株式会社 | Drive device for fuel injection device |
DE102014002261A1 (en) * | 2014-02-20 | 2015-08-20 | Man Diesel & Turbo Se | Control unit of an internal combustion engine |
DE102015217955A1 (en) * | 2014-10-21 | 2016-04-21 | Robert Bosch Gmbh | Device for controlling at least one switchable valve |
GB2534172A (en) * | 2015-01-15 | 2016-07-20 | Gm Global Tech Operations Llc | Method of energizing a solenoidal fuel injector for an internal combustion engine |
DE102015211402B3 (en) * | 2015-06-22 | 2016-08-04 | Continental Automotive Gmbh | A method for generating a drive signal for a final drive device for injection valves |
DE102016219375B3 (en) * | 2016-10-06 | 2017-10-05 | Continental Automotive Gmbh | Operating a fuel injector with hydraulic stop at reduced fuel pressure |
DE102016219888B3 (en) | 2016-10-12 | 2017-11-23 | Continental Automotive Gmbh | Operating a fuel injector with hydraulic stop |
DE102016219881B3 (en) * | 2016-10-12 | 2017-11-23 | Continental Automotive Gmbh | Operating a fuel injector with hydraulic stop |
JP6717176B2 (en) * | 2016-12-07 | 2020-07-01 | 株式会社デンソー | Injection control device |
DE102016224682A1 (en) * | 2016-12-12 | 2018-06-14 | Robert Bosch Gmbh | Method for heating a gas valve, in particular a fuel injector |
JP7006204B2 (en) | 2017-12-05 | 2022-01-24 | 株式会社デンソー | Injection control device |
CN108979874B (en) * | 2018-07-24 | 2020-09-29 | 潍柴动力股份有限公司 | Control method and control device of electromagnetic valve and gas engine |
WO2020070902A1 (en) | 2018-10-03 | 2020-04-09 | 株式会社クロスフォー | Fastener for ornament |
KR102068137B1 (en) * | 2019-06-28 | 2020-01-21 | 대한민국(국방부 해군참모총장) | Portable injector inspector of mtu engine for naval ship |
DE102020200679A1 (en) * | 2020-01-22 | 2021-07-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for opening a valve assembly for a fuel tank |
DE102020200682A1 (en) * | 2020-01-22 | 2021-07-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for operating an electromagnetically controllable tank valve, computer program and control device |
Family Cites Families (10)
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DE2828678A1 (en) * | 1978-06-30 | 1980-04-17 | Bosch Gmbh Robert | METHOD AND DEVICE FOR OPERATING AN ELECTROMAGNETIC CONSUMER, IN PARTICULAR AN INJECTION VALVE IN INTERNAL COMBUSTION ENGINES |
US4327693A (en) * | 1980-02-01 | 1982-05-04 | The Bendix Corporation | Solenoid driver using single boost circuit |
US4479161A (en) * | 1982-09-27 | 1984-10-23 | The Bendix Corporation | Switching type driver circuit for fuel injector |
US4486703A (en) * | 1982-09-27 | 1984-12-04 | The Bendix Corporation | Boost voltage generator |
US4604675A (en) * | 1985-07-16 | 1986-08-05 | Caterpillar Tractor Co. | Fuel injection solenoid driver circuit |
US4729056A (en) * | 1986-10-02 | 1988-03-01 | Motorola, Inc. | Solenoid driver control circuit with initial boost voltage |
DE19746980A1 (en) | 1997-10-24 | 1999-04-29 | Bosch Gmbh Robert | Method of driving electromagnetic load, esp. a fuel injection valve for an internal combustion engine |
US6031707A (en) * | 1998-02-23 | 2000-02-29 | Cummins Engine Company, Inc. | Method and apparatus for control of current rise time during multiple fuel injection events |
DE19808780A1 (en) * | 1998-03-03 | 1999-09-09 | Bosch Gmbh Robert | Method of driving load, especially magnetic valve for controlling fuel delivery in IC engine |
DE19833830A1 (en) * | 1998-07-28 | 2000-02-03 | Bosch Gmbh Robert | System for energizing magnetic valves controlling fuel injection in IC engine, using increased starting voltage and engine operating characteristic(s) |
-
2000
- 2000-03-22 DE DE10014228A patent/DE10014228A1/en not_active Withdrawn
-
2001
- 2001-02-09 KR KR1020017014836A patent/KR100757565B1/en not_active IP Right Cessation
- 2001-02-09 BR BR0105317-5A patent/BR0105317A/en not_active Application Discontinuation
- 2001-02-09 DE DE50107260T patent/DE50107260D1/en not_active Expired - Lifetime
- 2001-02-09 JP JP2001569133A patent/JP4418616B2/en not_active Expired - Fee Related
- 2001-02-09 WO PCT/DE2001/000499 patent/WO2001071174A1/en active IP Right Grant
- 2001-02-09 ES ES01915007T patent/ES2245352T3/en not_active Expired - Lifetime
- 2001-02-09 EP EP01915007A patent/EP1185773B1/en not_active Expired - Lifetime
- 2001-09-02 US US09/979,353 patent/US6785112B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0171174A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20030010325A1 (en) | 2003-01-16 |
JP2003528251A (en) | 2003-09-24 |
DE50107260D1 (en) | 2005-10-06 |
US6785112B2 (en) | 2004-08-31 |
DE10014228A1 (en) | 2001-09-27 |
EP1185773B1 (en) | 2005-08-31 |
KR20020005047A (en) | 2002-01-16 |
JP4418616B2 (en) | 2010-02-17 |
ES2245352T3 (en) | 2006-01-01 |
BR0105317A (en) | 2002-02-19 |
KR100757565B1 (en) | 2007-09-10 |
WO2001071174A1 (en) | 2001-09-27 |
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