WO2015150013A1 - Verfahren zum betreiben einer hochdruckpumpe eines einspritzsystems und einspritzsystem - Google Patents
Verfahren zum betreiben einer hochdruckpumpe eines einspritzsystems und einspritzsystem Download PDFInfo
- Publication number
- WO2015150013A1 WO2015150013A1 PCT/EP2015/054602 EP2015054602W WO2015150013A1 WO 2015150013 A1 WO2015150013 A1 WO 2015150013A1 EP 2015054602 W EP2015054602 W EP 2015054602W WO 2015150013 A1 WO2015150013 A1 WO 2015150013A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- injection system
- coil
- pressure pump
- temperature
- 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
- 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D33/00—Controlling delivery of fuel or combustion-air, 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
- 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
- F02D2041/2051—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
- F02D41/20—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
- F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
-
- 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
-
- 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
Definitions
- the present invention relates to a method for operating a high-pressure pump of an injection system of a Ver ⁇ internal combustion engine, in which a valve of the high-pressure pump via a control unit by acting on the coil of the valve with a control pulse and / or controlled.
- the required fuel pressure is generated by mechanically driven high-pressure pumps.
- Such high-pressure pumps are designed, for example, as radial piston pumps and have a pump housing in which a pump piston is movably mounted.
- the pump housing has a pressure chamber at one end of the pump piston.
- the pressure chamber has a drain line in which a valve designed as an outlet valve is arranged. This allows fluid to be expelled from the pressure chamber.
- valves are subject to heavy loads, especially when they have sustained loads, e.g. in high-pressure pumps are exposed. Since high-pressure pumps are exposed to pressures of, for example, 2,000 bar or more, high demands are placed on the valves in such pumps.
- the electrical power consumed by the high-pressure pump is dependent on the control of the high-pressure pump.
- the consumed electric power is increased by the above-mentioned additional brake pulse or "whisper pulse.”
- the pump is already subject to high thermal stress from outside, for example from engine waste heat and / or high outside temperature, it may be necessary to supply the supplied electrical energy reduce so that the corresponding valve does not "burn off".
- the resulting reduced coil resistance leads to a higher current cut, which in turn leads to a higher temperature. Therefore, a causal circuit is formed, which in a very short time results in valve failure. This also gives the risk of fire.
- the present invention has for its object to provide a method of the type described above, with which an overheating hazard of a high-pressure pump of an injection system can be countered in a particularly simple and effective manner.
- Disabling additional pulses applied to the valve when the detected coil temperature exceeds a threshold there is no blind switching off of additional pulses, in particular a "whispering pulse", but the additional pulses are switched off selectively if the determined coil temperature exceeds a limit value However, this does not happen until the danger of actual damage, and not with caution, switching off the additional pulses causes the pump to be less electrically stressed and the coil temperature drops.
- the electric current consumed by the valve for opening and / or closing is measured, as well as the voltage applied to the valve, from which the electrical resistance of the coil is calculated. This value depends on the coil resistance at No ⁇ minaltemperatur (20 ° C) and the coil temperature.
- the coil temperature is thus assigned to a specific coil clearly a temperature that can be determined by simple computing operations. If the coil temperature exceeds a determined threshold, additional pulses are turned off so that a simple and effectivemaschinelastsi ⁇ assurance is achieved. As mentioned above, additional pulses are applied in particular to effect a noise minimization of the high-pressure pump or the corresponding valves. According to the invention, therefore, additional pulses, with which the valve is subjected to noise reduction, are preferably switched off.
- the corresponding "whispering pulse” is therefore switched off when a temperature at which damage to the coil can be detected is determined, and therefore excess temperature damage to the coil is avoided according to the invention, in particular in the case of a "whispering pulse”.
- This will also increase the operating range of the Reached "Flüsterpulses” (against a blank cut-off).
- the pump is therefore also in an extended operating range low and their life expectancy is increased.
- the current that the valve for opening and / or closing is consumed, by a shunt resistor in the STEU ⁇ erhim Since such a shunt resistor anyway because of the above-described Whisper function in the
- a resistance at normal temperature can usefully be measured and stored for the calculation of the current coil temperature value.
- the resistance can be measured at 20 ° C (R20). This can best be done if the associated engine is longer than 12 hours. This can be determined by the "engine off timer" and / or by the same temperature reading of the cooling water temperature (TCO) and the ambient temperature (TAM).
- TCO cooling water temperature
- TAM ambient temperature
- the resistance can also be measured at a temperature other than 20 ° C. The calculation is then simply related to the R20 value.
- the current andorsinfor ⁇ related information can be used by the drive signal of a valve of the high pressure pump (the coil temperature) to measure its temperature, and use this information to switch off of additional accordance with the invention Current pulses, in particular the "whisper pulse”, thenteurzu ⁇ lead, if there is an overheating hazard of the valve.
- the present invention further relates to an injection system of an internal combustion engine with a high-pressure pump with a valve and a control unit for opening and / or controlling the valve by applying a current to a coil of the valve.
- an injection system further comprises: means for measuring the electric current consumed by the valve for opening and / or closing, means for measuring the voltage applied to the valve, means for calculating the electrical resistance of the coil, means for Determining the coil temperature from the calculated coil resistance, means for charging the valve with additional pulses, and means for shutting off the means for charging the valve with additional pulses when the sensed coil temperature exceeds a threshold.
- the inventively provided facilities may be integrated into the control unit of the internal combustion engine.
- the device for charging the valve with additional pulses is preferably one which acts on the valve with pulses for noise reduction ("whisper pulse").
- the means for measuring the electric current consumed by the valve for opening and / or closing is preferably a shunt resistor in the control unit.
- a shunt resistor is present anyway if a device for generating a "whisper pulse" is provided.
- the injection system may further include means for measuring coil resistance at normal temperature.
- the valve of the high pressure pump is preferably an inlet valve thereof.
- FIG. 1 is a schematic view of a high-pressure pump with a valve in a longitudinal section; and FIG. 2 shows a flow chart of the method according to the invention.
- FIG. 1 schematically shows a high-pressure pump 10 of an injection system of an internal combustion engine.
- the pump 10 has a pump housing 12 and is formed in this embodiment as a radial piston pump.
- a pump piston 14 is movably mounted in the pump housing 12 in order to fill the pressure chamber 16 with fluid, this has a Inlet line 18, in which a designed as an inlet valve valve 20 is arranged.
- the formed as an inlet valve valve 20 is in this case be a digital switched valve forms ⁇ .
- the valve 20 facilitates the filling of the pressure chamber 16 and prevents the backflow of the fluid from the feed line 18 during filling.
- the pressure chamber 16 also has a drain line 22 in which a further valve 24 designed as an outlet valve is arranged. This fluid can be ejected from the pressure chamber 16.
- the pump 10 further has a drive shaft 26, which is in operative connection with an eccentric ring 28 and is rotatable in a rotational direction D in the clockwise direction.
- the valve has a valve housing with a recess in which a spring 32, a pin 34 and a sealing element 36 are arranged.
- the spring 32 biases the sealing element 36 over the pin 34 by being supported on a wall of the recess.
- In the recess is further located opposite the valve housing 29 fixedly arranged sealing seat 38 having through holes. Fluid can flow via the passage recesses if the sealing element 36 does not bear against the sealing seat 38.
- the valve 20 further includes an actuator 42.
- the actuator 42 is designed as a magnetic coil.
- the pin 34 is partially disposed within the actuator 42 and may be actuated by the actuator 42.
- these additional pulses which are applied to the valve for noise reduction ("whisper function"), are switched off when the determined coil temperature of the valve exceeds a limit value, whereby the "whisper pulse” does not blindly start at a certain speed switched off, but it is, as shown schematically in Figure 2, measured in step 1, the electric current consumed by the valve to open.
- the voltage applied to the valve is measured.
- Rt resistance at temperature t
- R20 resistance at 20 ° C sought temperature temperature coefficient
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020167030404A KR101835258B1 (ko) | 2014-04-02 | 2015-03-05 | 분사 시스템의 고압 펌프를 동작시키기 위한 방법 및 분사 시스템 |
CN201580018126.4A CN106536903A (zh) | 2014-04-02 | 2015-03-05 | 用于操作喷射系统的高压泵的方法和喷射系统 |
US15/301,483 US20170030288A1 (en) | 2014-04-02 | 2015-03-05 | Method for Operating a High Pressure Pump of an Injection System and an Injection System |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014206231.4 | 2014-04-02 | ||
DE102014206231.4A DE102014206231A1 (de) | 2014-04-02 | 2014-04-02 | Verfahren zum Betreiben einer Hochdruckpumpe eines Einspritzsystems und Einspritzsystem |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015150013A1 true WO2015150013A1 (de) | 2015-10-08 |
Family
ID=52627219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/054602 WO2015150013A1 (de) | 2014-04-02 | 2015-03-05 | Verfahren zum betreiben einer hochdruckpumpe eines einspritzsystems und einspritzsystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US20170030288A1 (de) |
KR (1) | KR101835258B1 (de) |
CN (1) | CN106536903A (de) |
DE (1) | DE102014206231A1 (de) |
WO (1) | WO2015150013A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007112462A1 (de) * | 2006-04-03 | 2007-10-11 | Robert Bosch Gmbh | Verfahren zur vorwärmung von einspritzinjektoren von brennkraftmaschinen |
DE102006059625A1 (de) * | 2006-12-14 | 2008-06-19 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Steuerung eines elektromagnetischen Ventils |
DE102008054512A1 (de) * | 2008-12-11 | 2010-06-17 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems einer Brennkraftmaschine |
DE102009046783A1 (de) * | 2009-11-17 | 2011-05-19 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Ansteuerung eines Mengensteuerventils |
DE102011085277A1 (de) * | 2011-10-27 | 2013-05-02 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Schaltventils |
Family Cites Families (20)
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DE19859281A1 (de) * | 1998-12-22 | 2000-06-29 | Bosch Gmbh Robert | Verfahren zur Kompensation der Temperaturabhängigkeit eines Spulenwiderstandes einer Ventilspule |
DE10045976A1 (de) * | 2000-09-16 | 2002-03-28 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung eines elektrischen Verbrauchers |
JP3851140B2 (ja) * | 2001-10-30 | 2006-11-29 | ボッシュ株式会社 | 流量制御用電磁比例制御弁の駆動方法 |
DE10301653A1 (de) * | 2002-01-18 | 2003-08-28 | Denso Corp | Kraftstoffeinspritzsystem für eine Brennkraftmaschine |
DE102004019152B4 (de) * | 2004-04-21 | 2007-05-31 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Magnetventils zur Mengensteuerung |
DE102004055575A1 (de) * | 2004-11-18 | 2006-05-24 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Leckageprüfung eines Kraftstoffeinspritzventils einer Brennkraftmaschine |
JP2007285139A (ja) * | 2006-04-13 | 2007-11-01 | Denso Corp | ディーゼル機関の制御装置 |
DE102007053408A1 (de) * | 2007-11-09 | 2009-05-14 | Continental Automotive Gmbh | Verfahren zur Bestimmung der Kraftstofftemperatur bei einem Common-Rail-Kraftstoffsystem sowie Common-Rail-Kraftstoffsystem einer Brennkraftmaschine |
JP4926032B2 (ja) * | 2007-12-25 | 2012-05-09 | 日立オートモティブシステムズ株式会社 | 内燃機関の制御装置 |
DE102008014085A1 (de) * | 2008-03-13 | 2009-09-17 | Robert Bosch Gmbh | Berechnungseinheit und Berechnungsverfahren zum Berechnen einer Kraftstofftemperatur |
DE102008042985A1 (de) * | 2008-10-21 | 2010-04-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Ansteuerung eines Kraftstoffinjektors |
DE102008054513A1 (de) * | 2008-12-11 | 2010-06-17 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems einer Brennkraftmaschine |
US8339762B2 (en) * | 2009-01-15 | 2012-12-25 | Sturman Industries, Inc. | Control valve coil temperature controller |
JP5327124B2 (ja) * | 2010-04-09 | 2013-10-30 | 株式会社デンソー | 燃料噴射制御装置 |
DE102010022536A1 (de) * | 2010-06-02 | 2011-12-08 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Steuern eines Ventils |
DE102012200457A1 (de) * | 2011-03-03 | 2012-09-06 | Robert Bosch Gmbh | Verfahren zum Bestimmen einer Temperatur von Kraftstoff |
DE102011075269B4 (de) | 2011-05-04 | 2014-03-06 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Steuern eines Ventils |
DE102011077987A1 (de) * | 2011-06-22 | 2012-12-27 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Kraftstofffördereinrichtung |
US9341181B2 (en) * | 2012-03-16 | 2016-05-17 | Denso Corporation | Control device of high pressure pump |
DE102012224416A1 (de) * | 2012-12-27 | 2014-07-03 | Robert Bosch Gmbh | Verfahren zum Ermitteln der Temperatur von Kraftstoff in einer Kraftstoffpumpe |
-
2014
- 2014-04-02 DE DE102014206231.4A patent/DE102014206231A1/de not_active Ceased
-
2015
- 2015-03-05 KR KR1020167030404A patent/KR101835258B1/ko active IP Right Grant
- 2015-03-05 CN CN201580018126.4A patent/CN106536903A/zh active Pending
- 2015-03-05 WO PCT/EP2015/054602 patent/WO2015150013A1/de active Application Filing
- 2015-03-05 US US15/301,483 patent/US20170030288A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007112462A1 (de) * | 2006-04-03 | 2007-10-11 | Robert Bosch Gmbh | Verfahren zur vorwärmung von einspritzinjektoren von brennkraftmaschinen |
DE102006059625A1 (de) * | 2006-12-14 | 2008-06-19 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Steuerung eines elektromagnetischen Ventils |
DE102008054512A1 (de) * | 2008-12-11 | 2010-06-17 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems einer Brennkraftmaschine |
DE102009046783A1 (de) * | 2009-11-17 | 2011-05-19 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Ansteuerung eines Mengensteuerventils |
DE102011085277A1 (de) * | 2011-10-27 | 2013-05-02 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Schaltventils |
Also Published As
Publication number | Publication date |
---|---|
US20170030288A1 (en) | 2017-02-02 |
KR101835258B1 (ko) | 2018-03-06 |
DE102014206231A1 (de) | 2015-10-08 |
KR20160140862A (ko) | 2016-12-07 |
CN106536903A (zh) | 2017-03-22 |
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