WO2012175248A1 - Verfahren zum betreiben einer kraftstofffördereinrichtung - Google Patents
Verfahren zum betreiben einer kraftstofffördereinrichtung Download PDFInfo
- Publication number
- WO2012175248A1 WO2012175248A1 PCT/EP2012/057988 EP2012057988W WO2012175248A1 WO 2012175248 A1 WO2012175248 A1 WO 2012175248A1 EP 2012057988 W EP2012057988 W EP 2012057988W WO 2012175248 A1 WO2012175248 A1 WO 2012175248A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- phase
- frequency
- coil
- duty cycle
- voltage
- Prior art date
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
-
- 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
- F02D41/3005—Details not otherwise provided for
-
- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
-
- 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
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/0265—Pumps feeding common rails
Definitions
- the invention relates to a method according to the preamble of claim 1, and a drive circuit, a computer program and a control and / or regulating device according to the independent claims.
- Quantity control valves for example in a fuel delivery device of an internal combustion engine, are known from the market. Rate control valves are generally operated electromagnetically and are often part of a high-pressure pump of the fuel delivery device. The quantity control valve controls the amount of fuel flowing to a high-pressure accumulator, from where the fuel is passed to the injection valves of the internal combustion engine. For example, the quantity control valve has two switching states, between which can be switched by means of an electronic control.
- Pulse width modulated voltage can be controlled very easily and inexpensively, with good switching properties are possible.
- a current control of the power amplifier by means of switching thresholds is not required.
- the invention relates to a method for operating a
- Fuel delivery device of an internal combustion engine in which an electromagnetic actuator of a arranged in an inlet to a delivery chamber of the fuel delivery device quantity control valve is switched to adjust a flow rate.
- the electromagnetic actuator is in each switching operation in which an armature of the electromagnetic actuator, for example, to be moved against the force of an armature spring in the direction of a stroke stop, by means of
- Control energy supplied is carried out by means of a pulse width modulation.
- a pulse width modulation For example, this will be one
- the control of the electromagnetic actuator or the coil is such that the armature from a first position - generally from a rest seat - in a second position - generally to a stroke stop
- the control according to the invention comprises at least three phases.
- a first phase the coil is continuously switched to the voltage for a comparatively short period of time.
- a subsequent second phase the coil is periodically switched to the voltage at a first frequency and at a first duty cycle.
- the coil is in turn periodically connected to a second frequency and with a second duty cycle to the voltage.
- the first and the second duty cycle are generally different from each other.
- the second duty cycle is set such that a mean electric power is lower during the third phase than during the second phase.
- An embodiment of the invention provides that a respective duration of the three phases and / or the first frequency and / or the second frequency and / or the first duty cycle and / or the second duty cycle as a function of the voltage and / or a temperature and / or or a line resistance and / or a rotational speed of the internal combustion engine can be adjusted.
- the temperature is for example a temperature of the coil and the
- Line resistance is a lead resistance of a cable for connecting the coil to a drive circuit, which is preferably arranged in a control and / or regulating device of the internal combustion engine.
- the invention provides that the first and the second phase cause a starting phase of the armature, and that the third phase causes a holding phase of the armature.
- the tightening phase is the phase in which the armature is moved by magnetic force from the rest seat to the stroke stop.
- the hold phase is that phase in which the armature is held in place by a - generally lower - magnetic force on the stroke stop.
- the method according to the invention can be advantageously used to simulate a conventional so-called "current-controlled" control of the electromagnetic actuator and to replace it almost equally, with a considerable effort can be saved.
- a "current controlled” driver generally uses lower and upper current thresholds to control the current flowing through the coil using hysteresis. If the lower current threshold is undershot, the coil is switched to the voltage. If the upper current threshold is exceeded, the coil is switched off by the voltage. This results in an oscillating time curve of the coil current between the two current thresholds.
- the energy W to be applied during the starting phase is proportional to an integral of the current I over the starting time t: t-suit, end
- the energy W to be applied during the starting phase is likewise proportional to an integral of the current I over the starting time t:
- control according to the invention is preferably dimensioned such that an equality of the energies W to be expended during the starting phase results:
- a sum energy of the control of the coil during the third phase to a sum energy of the current-controlled control during the holding phase can be approximately the same or be made as equal in a comparable manner.
- the inventive method is simplified when the respective duration of the three phases and / or the first frequency and / or the second frequency and / or the first duty cycle and / or the second duty cycle is determined using at least one map.
- the map can be the above-mentioned dependence on the voltage, the coil temperature, the
- the map for a particular series of quantity control valves can be determined once on a test bench, and stored, for example, in a data memory of the control and / or regulating device of the internal combustion engine.
- a further simplification of the invention is when the first frequency is equal to the second frequency.
- a simplified clock generation for driving the electromagnetic actuator can be used, wherein the different during the second and the third phase average electrical power substantially by a respective
- Duty cycle can be adjusted.
- the invention comprises a drive circuit for actuating the electromagnetic actuating device of the quantity control valve, which has means for carrying out an activation by means of at least three phases according to at least one of the preceding claims.
- the control takes place via a pulse width modulation of the voltage generating the drive power.
- the necessary electronic circuit is simple and inexpensive to produce.
- the inventive method is scalable within wide limits, so that it is often not necessary to different structural embodiments of
- the method is particularly easy to carry out if it is carried out by means of a computer program on the control and / or regulating device ("control unit") of the internal combustion engine, in particular using the map described above.
- the device is set up by loading the computer program with the features of the independent computer program claim from a storage medium.
- the storage medium is understood as meaning any device that contains the computer program in stored form.
- Figure 1 is a simplified diagram of a fuel delivery of a
- Figure 2 is a sectional view of a high-pressure pump of
- a fuel delivery device together with a quantity control valve and an electromagnetic actuator
- Figure 3 is a timing diagram of a control of the electromagnetic
- Figure 4 is a simplified block diagram to supplement the method.
- FIG. 1 shows a fuel delivery device 10 of an internal combustion engine in a greatly simplified representation. From a fuel tank 12 is fuel via a suction line 14, by means of a feed pump 16, via a
- Actuator 20 (“solenoid") operable quantity control valve 22 of a high-pressure pump 24 is supplied. Downstream is the high pressure pump 24 connected via a high-pressure line 26 to a high-pressure accumulator 28 ("common rail").
- High-pressure pump 24 are not shown in the figure 1.
- Electromagnetic actuator 20 is controlled by means of a control circuit 31 arranged on a control and / or regulating device 30.
- control and / or regulating device 30 has a computer program 32 and a map 34.
- the quantity control valve 22 may be formed as a unit with the high-pressure pump 24.
- the high-pressure pump 24 may be formed as a unit with the high-pressure pump 24.
- the prefeed pump 16 conveys fuel from the fuel tank 12 into the low-pressure line 18
- Quantity control valve 22 the amount of fuel supplied to a working space of the high-pressure pump 24 by an armature 46 (see Figure 2) of the
- Electromagnet 20 from a first to a second position - and vice versa - is moved.
- the quantity control valve 22 can thus be closed and opened.
- Figure 2 shows a partial sectional view (longitudinal section) of
- High pressure pump 24 of the fuel delivery device 10 together with the quantity control valve 22 and the electromagnetic actuator 20 comprises a housing 36 in which in the in
- the electromagnetic actuator 20 is arranged in a valve housing 42, and comprises a coil 44, an armature 46, a pole core 48, an armature spring 50, a rest seat 52 and a stroke stop 54.
- the rest seat 52 represents the first position of the armature 46
- the stroke stop 54 represents the second position of the armature 46.
- the armature 46 is acted upon by means of a
- Coupling element 56 a valve body 58.
- an associated sealing seat 60 is arranged.
- the sealing seat 60 is part of a pot-shaped housing element 62, which encloses inter alia the valve body 58 and a valve spring 64. Sealing seat 60 and valve body 58 form the inlet valve of the high-pressure pump 24.
- the armature 46 is pressed by means of the armature spring 50 in the drawing down against the rest seat 52 in Figure 2, the de-energized state of the electromagnetic actuator.
- Coupling element 56 is thereby acted upon by the valve body 58 against the force of the valve spring 64, whereby the inlet valve or the
- Quantity control valve 22 opens. As a result, a fluidic connection between the low-pressure line 18 and the delivery chamber 38 is produced.
- the armature 46 In the energized state of the electromagnetic actuator 20, the armature 46 is magnetically attracted by the pole core 48, whereby the coupling element 56 connected to the armature 46 is moved upward in the drawing. As a result, the valve body 58 can be pressed against the sealing seat 60 by the force of the valve spring 64 with corresponding fluid pressure ratios, and thus close the inlet valve or the quantity control valve 22. This can be done, for example, when the piston 40 in the delivery chamber 38 performs a working movement (in the drawing up), wherein fuel via an open thereby check valve 66 in the
- High pressure line 26 can be promoted.
- Figure 3 shows a timing diagram of a control of the quantity control valve 22.
- Double arrows 68 and 70 or 72 indicate a first phase or a second phase or a third phase of the control of
- the armature 46 is moved by magnetic force from the rest seat 52 to the armature 46 Stroke stop 54 moves.
- the hold phase the armature 46 is held in position by a generally smaller magnetic force on the stroke stop 54.
- a time interval 74 denotes a further phase of the activation of the electromagnetic actuator 20, in which the energization of the coil 44 is switched off.
- the current 11 or 12 is reduced comparatively rapidly to zero, so that the armature 46 can fall from the stroke stop 54 back to the rest seat 52.
- the course of the current 11, which results in the method according to the invention, will be described below.
- the current 12 results at a
- the coil 44 is constantly connected to a
- Voltage for example, a battery voltage of a motor vehicle.
- the voltage is periodically applied to the coil at a (constant) first frequency 76 and a (constant) first duty cycle 78
- the first frequency 76 is the reciprocal of the period T of the current 11 shown in the drawing of FIG.
- the first duty cycle 78 is characterized by a relative duty cycle 80 - in which the current 11 increases - and by a relative turn-off duration 82 - in which the current 11 drops.
- the voltage is periodically switched to the coil 44 at a second frequency (without reference numeral) and at a second duty cycle (without reference numeral).
- the second frequency and the second duty cycle are also constant during the third phase. In the present case, the second frequency is equal to the first frequency.
- Duty cycle has a relative to the first duty ratio lower duty cycle 80, so that there is a correspondingly smaller average value of the current 11 during the third phase.
- the respective duration of the three phases shown in FIG. 3 as well as the first and the second frequency as well as the first and the second duty cycle are determined using the map 34. This determination is made before the start (time tO) of the drive in dependence on the current level of the voltage, from the current temperature of the coil 44, of the
- Quantity control valve 22 the result of a control. A regulation by means of the current 11 influencing thresholds does not occur.
- the sum energy for the first and the second phase can be determined for the current 11 and the current 12, respectively, via the following proportional relationships:
- the second frequency is different from the first frequency 76.
- FIG. 4 shows a simplified flowchart for controlling the
- the illustrated method is preferably performed by means of the computer program 32 in the control and / or regulating device 30 of the internal combustion engine.
- the illustrated procedure begins, whereby different variables are determined and / or read from a data memory of the control and / or regulating device 30:
- Quantity control valve 22 and / or the internal combustion engine to be used are used.
- different drive quantities are determined using the characteristic field 34 on the basis of the variables mentioned above. These driving sizes are:
- control variables and their value ratio to one another essentially determine the time profile of the current I, as illustrated, for example, as current 11 in FIG.
- the coil 44 of the electromagnetic actuator 20 is driven using the determined drive quantities.
- the control variables ascertained in block 86 can be used for a plurality of successive activations of the coil 44 or switching operations of the quantity control valve 22, or alternatively the actuation variables can be newly determined for each individual switching operation of the quantity control valve 22.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201280030485.8A CN103649506B (zh) | 2011-06-22 | 2012-05-02 | 用于运行燃料输送装置的方法 |
US14/128,602 US9303582B2 (en) | 2011-06-22 | 2012-05-02 | Method for operating a fuel delivery device |
EP12718204.6A EP2724012A1 (de) | 2011-06-22 | 2012-05-02 | Verfahren zum betreiben einer kraftstofffördereinrichtung |
KR1020137033964A KR101898881B1 (ko) | 2011-06-22 | 2012-05-02 | 연료 공급 장치의 작동 방법 |
JP2014516236A JP5976104B2 (ja) | 2011-06-22 | 2012-05-02 | 燃料供給装置の動作方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011077987.6 | 2011-06-22 | ||
DE102011077987A DE102011077987A1 (de) | 2011-06-22 | 2011-06-22 | Verfahren zum Betreiben einer Kraftstofffördereinrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012175248A1 true WO2012175248A1 (de) | 2012-12-27 |
Family
ID=46025706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/057988 WO2012175248A1 (de) | 2011-06-22 | 2012-05-02 | Verfahren zum betreiben einer kraftstofffördereinrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US9303582B2 (de) |
EP (1) | EP2724012A1 (de) |
JP (1) | JP5976104B2 (de) |
KR (1) | KR101898881B1 (de) |
CN (1) | CN103649506B (de) |
DE (1) | DE102011077987A1 (de) |
WO (1) | WO2012175248A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012211798B4 (de) * | 2012-07-06 | 2019-12-05 | Robert Bosch Gmbh | Verfahren zur Betätigung eines Schaltelements einer Ventileinrichtung |
FR3007811B1 (fr) * | 2013-07-01 | 2015-07-31 | Areva Np | Ensemble avec un dispositif de blocage de tubes, et procede de maintenance associe |
US9822747B2 (en) * | 2014-01-21 | 2017-11-21 | MAGNETI MARELLI S.p.A. | Method to control an electromagnetic actuator of an internal combustion engine |
DE102014206231A1 (de) * | 2014-04-02 | 2015-10-08 | Continental Automotive Gmbh | Verfahren zum Betreiben einer Hochdruckpumpe eines Einspritzsystems und Einspritzsystem |
DE102015220387A1 (de) * | 2015-10-20 | 2017-05-04 | Robert Bosch Gmbh | Ankerbaugruppe sowie elektromagnetisch betätigbares Ventil, insbesondere Saugventil |
CN108979874B (zh) * | 2018-07-24 | 2020-09-29 | 潍柴动力股份有限公司 | 一种电磁阀的控制方法、控制装置及燃气发动机 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19834120A1 (de) * | 1998-07-29 | 2000-02-03 | Bosch Gmbh Robert | Kraftstoffversorgungsanlage einer Brennkraftmaschine |
EP1741912A2 (de) * | 2005-07-05 | 2007-01-10 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Verfahren und Vorrichtung zur Steuerung eines Kraftstoffeinspritzsystems für eine Brennkraftmaschine eines Fahrzeugs |
US20110094476A1 (en) * | 2009-10-23 | 2011-04-28 | Caterpillar Inc. | Pressure relief valve |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6830201B2 (en) * | 2002-12-26 | 2004-12-14 | Robert Bosch Gmbh | High pressure control valve for a fuel injector |
DE102004016554B4 (de) * | 2004-04-03 | 2008-09-25 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Ansteuerung eines Magnetventils |
JP2005307747A (ja) * | 2004-04-16 | 2005-11-04 | Mitsubishi Electric Corp | 内燃機関の燃料供給装置 |
DE102007035316B4 (de) * | 2007-07-27 | 2019-12-24 | Robert Bosch Gmbh | Verfahren zur Steuerung eines Magnetventils einer Mengensteuerung in einer Brennkraftmaschine |
DE102008054702A1 (de) * | 2008-12-16 | 2010-06-17 | Robert Bosch Gmbh | Verfahren zur Regelung eines Magnetventils einer Mengensteuerung in einer Brennkraftmaschine |
DE102011077991A1 (de) * | 2011-06-22 | 2012-12-27 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Kraftstofffördereinrichtung einer Brennkraftmaschine |
-
2011
- 2011-06-22 DE DE102011077987A patent/DE102011077987A1/de not_active Withdrawn
-
2012
- 2012-05-02 US US14/128,602 patent/US9303582B2/en active Active
- 2012-05-02 WO PCT/EP2012/057988 patent/WO2012175248A1/de active Application Filing
- 2012-05-02 KR KR1020137033964A patent/KR101898881B1/ko active IP Right Grant
- 2012-05-02 EP EP12718204.6A patent/EP2724012A1/de not_active Withdrawn
- 2012-05-02 JP JP2014516236A patent/JP5976104B2/ja not_active Expired - Fee Related
- 2012-05-02 CN CN201280030485.8A patent/CN103649506B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19834120A1 (de) * | 1998-07-29 | 2000-02-03 | Bosch Gmbh Robert | Kraftstoffversorgungsanlage einer Brennkraftmaschine |
EP1042607B1 (de) | 1998-07-29 | 2004-11-10 | Robert Bosch Gmbh | Kraftstoffversorgungsanlage einer brennkraftmaschine |
EP1741912A2 (de) * | 2005-07-05 | 2007-01-10 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Verfahren und Vorrichtung zur Steuerung eines Kraftstoffeinspritzsystems für eine Brennkraftmaschine eines Fahrzeugs |
US20110094476A1 (en) * | 2009-10-23 | 2011-04-28 | Caterpillar Inc. | Pressure relief valve |
Also Published As
Publication number | Publication date |
---|---|
CN103649506B (zh) | 2018-08-07 |
JP5976104B2 (ja) | 2016-08-23 |
KR20140035948A (ko) | 2014-03-24 |
US20140224222A1 (en) | 2014-08-14 |
US9303582B2 (en) | 2016-04-05 |
KR101898881B1 (ko) | 2018-09-14 |
CN103649506A (zh) | 2014-03-19 |
EP2724012A1 (de) | 2014-04-30 |
DE102011077987A1 (de) | 2012-12-27 |
JP2014517213A (ja) | 2014-07-17 |
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