EP3414442A1 - Method for controlling an electromagnetic adjustment unit - Google Patents
Method for controlling an electromagnetic adjustment unitInfo
- Publication number
- EP3414442A1 EP3414442A1 EP16815807.9A EP16815807A EP3414442A1 EP 3414442 A1 EP3414442 A1 EP 3414442A1 EP 16815807 A EP16815807 A EP 16815807A EP 3414442 A1 EP3414442 A1 EP 3414442A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- switching time
- end stop
- valve
- coil
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—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
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2024—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control switching a load after time-on and time-off pulses
- F02D2041/2027—Control of the current by pulse width modulation or duty cycle control
-
- 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
- F02D2041/2037—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit for preventing bouncing of the valve needle
-
- 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
- F02D2041/2048—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit said control involving a limitation, e.g. applying current or voltage limits
-
- 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
- F02D2041/2051—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using voltage control
-
- 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
- F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
- F02M59/368—Pump inlet valves being closed when actuated
Definitions
- the invention relates to a method for controlling an electromagnetic actuator
- the electromagnetic actuator is the operation of a valve piston of a valve, in particular an electromagnetically actuated suction valve, which is used to control the flow rate of a high-pressure pump.
- Opening degree of the suction valve can be determined.
- the stroke of the armature is usually limited by a stopper body.
- a stopper body for example, serve a pole core, which is arranged within the magnetic coil and the armature is located opposite a working air gap.
- the electromagnetically controllable suction valve which is disclosed in the published patent application DE 10 2014 200 339 AI. If the solenoid is energized to allow the stroke of the armature to close the suction valve, the armature moves against the spring force of a spring in the direction of the pole core to close the working air gap. Only with striking the anchor on the pole core is a safe closing of the
- Proposed is a method for controlling an electromagnetic actuator with an annular solenoid and a liftable between a first and a second end stop armature for actuating a valve piston of a valve, in particular an electromagnetically actuated suction valve.
- a magnetic force is generated by energizing the magnetic coil, through which the armature is pulled against the spring force of a spring in the direction of the second end stop.
- the method is carried out while maintaining a predetermined switching time, wherein the available or permissible switching time is fully utilized by appropriate adaptation of the current supply profile and / or the applied electrical voltage.
- a predetermined switching time wherein the available or permissible switching time is fully utilized by appropriate adaptation of the current supply profile and / or the applied electrical voltage.
- the energization profile can be varied via the current level and / or the duration of the energization. Both manipulated variables influence the
- the Bestromungshiel is varied within a predetermined switching time.
- the current level determines the magnetic force acting on the armature. The stronger the magnetic force, the higher the tightening force that pulls the armature towards the second end stop.
- Reducing the armature speed and to achieve a reduced stop pulse preferably the current level is lowered before the armature reaches the second end stop. At least temporarily a reduced magnetic force acts on the armature.
- the lighting duration can be varied within a predetermined switching time, wherein preferably the
- Bestromungsdauer within the specified switching time is shortened. This means that the magnetic field that builds up when the solenoid is energized prematurely degrades again, so that no magnetic force acts on the armature before reaching the second end stop.
- the voltage applied to the solenoid coil within a given switching time is initially increased, so that the
- Anchor experiences an acceleration at the beginning of its stroke.
- the acceleration compensates for the subsequent reduction of the anchor speed, so that the required switching time is safely maintained.
- the stop time of the armature is detected at the second end stop. This can be a
- Actuation of a suction valve can be defined as a function of the viscosity of the fuel.
- the armature speed is preferably corrected by varying the current flow profile and / or the electrical voltage applied to the magnet coil within a predetermined switching time.
- the learned manipulated variables can be stored via a function, so that the Einregelvorgang is accelerated at a restart of an operating point.
- attack time can be optimized by a function that continuously changes the Bestromungsprofil and / or the voltage according to a strategy to be defined. If no striking of the anchor detected, the last change can be withdrawn and thus the minimum possible touch dynamics are adjusted.
- the proposed method thus enables a minimization of the required driving energy. Because there is no longer any need to include lifetime retention or specimen spreads (good / bad valve spreads).
- the variation of the Bestromungsprofils and / or applied to the magnetic coil electrical voltage in accordance with a control unit connected to the electromagnetic actuator is performed.
- the learned manipulated variables can be stored and as
- the switching time in dependence on at least one operating parameter of a feed pump and / or one with the
- Feed pump connected internal combustion engine is specified. This is particularly advantageous when the method is used to control an electromagnetic actuator of a suction valve. In this way, it is ensured that the feed pump is supplied with the sufficient amount of fuel.
- the switching time may be dependent on the speed or the flow rate.
- FIG. 1 shows a schematic longitudinal section through an electromagnetically actuated suction valve known from the prior art
- Fig. 2 is a schematic representation of the dependence of the armature stroke of the control variables Bestromungshou and Bestromungsdauer and voltage.
- the solenoid-operated suction valve 7 shown in FIG. 1 comprises an electromagnetic setting unit 1, which is mounted together with the suction valve 7 to a cylinder head 10 of a feed pump 9 for fuel.
- the electromagnetic actuating unit 1 comprises an annular magnet coil 2 and an armature 5 which can be moved in the stroke between two end stops 3, 4 and which can be coupled to a valve piston 6 in order to actuate the suction valve 7.
- the spring force of a spring 8 presses the armature 5 against the valve piston 6, which lifted in this way from a valve seat 11 becomes. Because the spring force of the spring 8 is greater than that of a valve spring 12 which loads the valve piston 6 in the direction of the valve seat 11.
- the solenoid coil 2 is energized, the closing of the rising pressure in the high-pressure element space 15 is supported.
- the energization of the magnetic coil 2 generates a magnetic field whose magnetic force moves the armature 5 in the direction of the second end stop 4, which in the present case is formed by a pole core 18.
- the valve piston 6 is thus relieved, so that the valve spring 12 is able to pull the valve piston 6 into the valve seat 11.
- Electromagnetic actuator 1 can therefore the flow rate of the
- Feed pump 9 are regulated.
- the stroke of the armature 5 must ensure a safe closing of the suction valve 7. Accordingly, the
- the electromagnetic actuator 1 is controlled in such a way that the stop pulse is reduced. Because shortly before the armature 5 reaches the second end stop 4, the speed of the armature 5 is reduced within the predetermined switching time.
- the manipulated variables can be the level and / or the duration of the Current supply I of the solenoid coil 2 and / or applied to the solenoid coil 2 voltage U serve.
- Fig. 2 the dependencies are shown schematically.
- the upper graphs show possible variations of the energization I and the lower graphs show possible variations of the voltage U, respectively over the time t.
- H In the middle of the course of the anchor stroke H is shown. If, for example, at the beginning of the armature stroke, the voltage U is briefly increased significantly, this leads to a fast armature movement, which compensates for a subsequent reduction in the armature speed for reducing the stop pulse.
- the armature movement can be acted upon by the energization duration and / or the current level.
- the energization duration can be shortened (arrow 19) and / or the current level can be lowered (arrow 20).
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016201894.9A DE102016201894A1 (en) | 2016-02-09 | 2016-02-09 | Method for controlling an electromagnetic actuator |
PCT/EP2016/080951 WO2017137119A1 (en) | 2016-02-09 | 2016-12-14 | Method for controlling an electromagnetic adjustment unit |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3414442A1 true EP3414442A1 (en) | 2018-12-19 |
Family
ID=57589016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16815807.9A Withdrawn EP3414442A1 (en) | 2016-02-09 | 2016-12-14 | Method for controlling an electromagnetic adjustment unit |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3414442A1 (en) |
CN (1) | CN108699988A (en) |
DE (1) | DE102016201894A1 (en) |
WO (1) | WO2017137119A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112006000782T5 (en) * | 2005-03-31 | 2008-02-07 | Caterpillar Inc., Peoria | Control system for fuel injection |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5381297A (en) * | 1993-06-18 | 1995-01-10 | Siemens Automotive L.P. | System and method for operating high speed solenoid actuated devices |
DE102008054513A1 (en) * | 2008-12-11 | 2010-06-17 | Robert Bosch Gmbh | Method for operating a fuel injection system of an internal combustion engine |
DE102008054702A1 (en) * | 2008-12-16 | 2010-06-17 | Robert Bosch Gmbh | Method for controlling a solenoid valve of a quantity control in an internal combustion engine |
KR20120063117A (en) * | 2010-12-07 | 2012-06-15 | 현대자동차주식회사 | Solenoid valve control method for high pressure fuel pump of gdi engine and high pressure fluid pump |
US8662056B2 (en) * | 2010-12-30 | 2014-03-04 | Delphi Technologies, Inc. | Fuel pressure control system and method having a variable pull-in time interval based pressure |
DE102012218370B4 (en) * | 2012-10-09 | 2015-04-02 | Continental Automotive Gmbh | Method and device for controlling a valve |
JP6221828B2 (en) * | 2013-08-02 | 2017-11-01 | 株式会社デンソー | High pressure pump control device |
DE102013219396A1 (en) | 2013-09-26 | 2015-04-09 | Robert Bosch Gmbh | Method for detecting an unwanted closing of an electric suction valve of a high-pressure pump |
DE102014200339A1 (en) | 2014-01-10 | 2015-07-16 | Robert Bosch Gmbh | Electromagnetically controllable suction valve |
-
2016
- 2016-02-09 DE DE102016201894.9A patent/DE102016201894A1/en not_active Withdrawn
- 2016-12-14 CN CN201680081445.4A patent/CN108699988A/en active Pending
- 2016-12-14 WO PCT/EP2016/080951 patent/WO2017137119A1/en unknown
- 2016-12-14 EP EP16815807.9A patent/EP3414442A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112006000782T5 (en) * | 2005-03-31 | 2008-02-07 | Caterpillar Inc., Peoria | Control system for fuel injection |
Also Published As
Publication number | Publication date |
---|---|
CN108699988A (en) | 2018-10-23 |
DE102016201894A1 (en) | 2017-08-24 |
WO2017137119A1 (en) | 2017-08-17 |
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Legal Events
Date | Code | Title | Description |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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17P | Request for examination filed |
Effective date: 20180910 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20191220 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBERT BOSCH GMBH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20200603 |