WO2017110245A1 - 燃料噴射弁駆動特性校正方法及び車両用制御装置 - Google Patents
燃料噴射弁駆動特性校正方法及び車両用制御装置 Download PDFInfo
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- WO2017110245A1 WO2017110245A1 PCT/JP2016/082034 JP2016082034W WO2017110245A1 WO 2017110245 A1 WO2017110245 A1 WO 2017110245A1 JP 2016082034 W JP2016082034 W JP 2016082034W WO 2017110245 A1 WO2017110245 A1 WO 2017110245A1
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- WIPO (PCT)
- Prior art keywords
- fuel injection
- injection valve
- boost voltage
- vehicle control
- control device
- Prior art date
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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
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating 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
- F02D2041/2003—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
- F02D2041/2051—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
Definitions
- the present invention relates to a fuel injection valve drive characteristic calibration method and a vehicle control device.
- Automobiles are provided with a vehicle control device equipped with a control unit in order to realize various operation controls.
- One important control executed in such a vehicle control device is fuel injection control, and various control methods have been proposed and put into practical use (see, for example, Patent Document 1).
- the fuel injection control greatly affects the quality of engine operation.
- the energization time directly affects the injection amount. If the vehicular control device that controls the drive of the fuel injection valve has the same configuration, the drive characteristics of the fuel injection valve are basically the same.
- the present invention has been made in view of the above circumstances, eliminates variations in drive characteristics of fuel injection valves in a vehicle control device having the same configuration, and enables fuel injection control with higher reliability than in the past.
- a vehicle control device is provided.
- a fuel injection valve drive characteristic calibration method for a vehicle control apparatus is a fuel injection valve drive characteristic calibration method for calibrating a fuel injection valve drive characteristic in a vehicle control apparatus.
- the boost voltages are corrected by correcting the boost voltage based on the rise time of the fuel injector current when the boost voltage is applied, so that the rise times coincide with each other.
- 5B is a characteristic diagram showing an example of change in target boost voltage in two vehicle control devices. It is a characteristic diagram which shows the example of a change of the injection valve current in a conventional apparatus, and a target boost voltage, Comprising: (A) is a characteristic diagram which shows the example of a change of the injection valve current in two vehicle control apparatuses, (B) is 2 It is a characteristic diagram which shows the example of a change of the target boost voltage in one vehicle control apparatus.
- the vehicle control apparatus 101 includes an engine control unit (ECU) 51 and is configured to execute an operation control process of an engine (not shown), a fuel injection valve drive characteristic calibration process in the present embodiment described later, and the like. Is done.
- ECU engine control unit
- the engine control unit 51 includes a microcomputer (CPU) 1, a DCDC controller (DCDC-CON) 2, and a DCDC boost voltage generator (DCDC) 3.
- CPU microcomputer
- DCDC-CON DCDC controller
- DCDC DCDC boost voltage generator
- the microcomputer 1 receives detection signals from various sensors (not shown) such as the engine speed, the accelerator opening, the outside air temperature, the atmospheric pressure, and the like.
- the fuel injection valve drive characteristic calibration process is configured to be executable.
- the DCDC boost voltage generation unit 3 is configured to generate and output a boost voltage required when energization for fuel injection by the fuel injection valve 4 is started.
- the DCDC boost voltage generator 3 uses a so-called DC-DC converter circuit, and its basic circuit configuration is the same as the conventional one.
- the DCDC boost voltage generation unit 3 is configured so that the voltage value of the boost voltage to be output can be changed according to the control from the microcomputer 1 via the DCDC control unit 2, and whether or not the boost voltage needs to be output. It is configured to be controllable.
- the DCDC control unit 2 is configured to perform the above-described operation control on the DCDC boost voltage generation unit 3 in accordance with a control signal input from the microcomputer 1.
- a vehicular control device having the same circuit configuration manufactured based on the same specifications flows to a fuel injection valve when a fuel injection valve having the same operation characteristics is driven under the same driving conditions.
- the rise time of the current (hereinafter referred to as “injection valve current”) is substantially the same within an allowable range.
- the rise time of the injection valve current may deviate from an allowable range.
- each of two vehicle control devices A and B manufactured in the same specification and having the same circuit configuration (indicated as “ECU_A” and “ECU_B” in FIG. 5 respectively).
- V BS-A and V BS-B applied to the fuel injection valve at the start of driving of the fuel injection valve having the same operating characteristics are the same (see FIG. 5B)
- t B in the vehicle control device B, t B (FIG. 5 (A) two-dot chain line greater than the rise time of the vehicle control device A). (See the characteristic line)
- the fuel injection valve drive characteristic calibration method uses a vehicle control device that is manufactured based on the same specifications and has the same circuit configuration to drive the fuel injection valve having the same operation characteristics to the same drive condition. In this case, the rise time of each injection valve current when driven by is calibrated to be the same.
- the rise time of the injection valve current is measured, and when the value exceeds a preset reference time, the rise time of the injection valve current is a reference.
- the boost voltage output from the DCDC boost voltage generation unit 3 is corrected so that the time becomes the following time, and the rise time of the injection valve current between the vehicle control devices having the same configuration is calibrated, and the subsequent fuel injection valve 4 is used for drive control.
- FIG. 2 shows the procedure for measuring the rise time of the injection valve current
- FIG. 3 shows the procedure for correcting the boost voltage.
- the measurement process of the rise time of the injection valve current can be executed by the vehicle control device, and the vehicle control device is operated by an external device such as a test device that performs an operation test of the vehicle control device during manufacturing. Any one of them can be performed by controlling the operation.
- the so-called software is used so that the measurement process of the rise time of the injection valve current shown in FIG. 2 and the boost voltage correction process shown in FIG. It is installed.
- a relatively high voltage called a boost voltage is applied, the injection valve current is raised to a desired level in a short time, and the injection valve current may be maintained at a level lower than the initial target value. Therefore, a driving method is generally employed in which the voltage applied to the fuel injection valve 4 is switched to a voltage lower than the boost voltage. It is assumed that the driving of the fuel injection valve 4 in the present embodiment is also based on such a conventional driving method.
- a predetermined boost voltage is applied to the fuel injection valve 4 at a predetermined fuel injection time (see step S102 in FIG. 2).
- the predetermined fuel injection is, for example, pilot injection
- a predetermined boost voltage (hereinafter referred to as “reference boost voltage” for convenience of explanation) is an operation of the fuel injection valve 4 connected to the vehicle control device 101.
- the value is set in advance so as to obtain a desired pilot fuel injection amount (predetermined fuel injection) based on characteristics and the like.
- the above-described reference boost voltage is expressed as “V BS-A ” as appropriate.
- the measurement of the time (rise time) until the injection valve current reaches the target boost current I BS-T is started (see step S104 and step S106 in FIG. 2). .
- the injection valve current reaches the target boost current I BS-T .
- the measurement of the rise time is ended and the rise time is determined (see step S108 and step S110 in FIG. 2).
- the rise time measured as described above is appropriately expressed as “t B ” in the following description.
- the rise time t B acquired as described above is stored in an appropriate storage area of the vehicle control apparatus 101, for example, a storage area appropriately secured in the microcomputer 1.
- the injection valve current is fed back to the DCDC control unit 2 via the DCDC boost voltage generation unit 3 as in the prior art, and the DCDC control unit 2 sets the injection valve current to the target boost current I BS-T .
- the DCDC boost voltage generator 3 is instructed to stop boost voltage output.
- the boost voltage output timing from the DCDC boost voltage generation unit 3 via the DCDC control unit 2 and the boost voltage output stop timing of the DCDC boost voltage generation unit 3 by the DCDC control unit 2 are determined. Since it can be recognized, the rise time is acquired by measuring the elapsed time during this period.
- a time difference between the original rise time t A set in advance and the actually measured rise time t B read from the storage area is calculated (see step S204 in FIG. 3), and according to the time difference.
- the target boost voltage which is the target value of the boost voltage to be output from the DCDC boost voltage generation unit 3, is corrected (see step S206 in FIG. 3).
- the rise time t A is obtained when the fuel injection valve 4 is driven by the vehicle control device in which the reference boost voltage V BS-A is set. In the following description, “ This is referred to as “reference rise time”.
- the correction of the target boost voltage is intended to shorten or extend the rise time of the injection valve current. Therefore, basically, the target boost voltage is increased or decreased according to the time difference from the reference rise time. Correction is applied. It should be noted that it is preferable to determine the specific correction based on the test results and simulation results in consideration of the input / output characteristics of the DCDC boost voltage generation unit 3 and the like.
- the target boost voltage correction is performed as described above, and a new target boost voltage V BS-C is determined (see step S208 in FIG. 3).
- This new target boost voltage V BS-C is stored and held in an appropriate storage area of the microcomputer 1, and thereafter, the DCDC boost voltage generation unit 3 outputs it at the time of fuel injection corresponding to this target boost voltage.
- the target boost voltage is set and output.
- the new target boost voltage V BS-C determined as described above is determined to be higher or lower than the reference boost voltage V BS-A according to the rise time t B.
- the rise time t C of the injection valve current at the start of driving becomes the same as the reference rise time t A (FIG. 4 (A ) And FIG. 4 (B)).
- ECU_A represents a vehicle control device in which the reference boost voltage is set to V BS-A
- ECU_B represents boost voltage correction
- V BS target boost voltage
- the fuel injection valve drive characteristic calibration process is executed in the vehicle control device 101.
- the vehicle control is performed in the manufacturing process of the vehicle control device 101.
- the corrected target boost voltage (see S208 of FIG. 3) may be acquired by causing a test apparatus that performs an operation test of the apparatus 101 to store the acquired data when the vehicle control apparatus 101 is shipped.
- the fuel injection valve drive characteristic calibration process described above may be executed using the fuel injection valve 4 and an electrical equivalent circuit.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
なお、立ち上がり時間tAは、先の基準ブースト電圧VBS-Aが設定された車両用制御装置によって燃料噴射弁4を駆動した際に得られるものであり、以後の説明においては、適宜、「基準立ち上がり時間」と称する。
Claims (6)
- 燃料噴射弁の駆動特性を校正する方法であって、
校正対象の車両用制御装置(101)における所定の燃料噴射時のブースト電圧を所定の基準ブースト電圧に変えて前記車両用制御装置(101)に燃料噴射弁(4)を駆動せしめる第1のステップと、
前記燃料噴射弁(4)に流れる電流が所定の目標電流に達するまでの立ち上がり時間を計測する第2のステップと、
前記計測された立ち上がり時間に基づいて、前記校正対象の車両用制御装置(101)における前記所定の燃料噴射に対するブースト電圧を補正する第3のステップと、
前記補正後のブースト電圧を前記所定の燃料噴射に対するブースト電圧とする第4のステップとを備える
ことを特徴とする燃料噴射弁駆動特性校正方法。 - 前記第3のステップにおいて、
前記計測された立ち上がり時間と、所定の基準立ち上がり時間との時間差を算出し、前記時間差に応じてブースト電圧を補正する
ことを特徴とする請求項1に記載の燃料噴射弁駆動特性校正方法。 - 前記基準ブースト電圧及び基準立ち上がり時間は、基準とされた車両用制御装置における所定の燃料噴射に対するブースト電圧と、当該ブースト電圧で燃料噴射弁を駆動した場合の電流の立ち上がり時間である
ことを特徴とする請求項2記載の燃料噴射弁駆動特性校正方法。 - 前記校正対象の車両用制御装置(101)において実行される
ことを特徴とする請求項3記載の燃料噴射弁駆動特性校正方法。 - 前記校正対象の車両用制御装置(101)の動作試験を行う試験装置によって実行される
ことを特徴とする請求項3記載の燃料噴射弁駆動特性校正方法。 - 燃料噴射弁(4)の駆動制御可能に構成された制御ユニット(51)を備えた車両用制御装置(101)であって、
前記制御ユニット(51)は、
当該制御ユニット(51)における所定の燃料噴射時のブースト電圧を所定の基準ブースト電圧に変えて前記燃料噴射弁(4)を駆動し、
前記燃料噴射弁(4)に流れる電流が所定の目標電流に達するまでの立ち上がり時間を計測し、
前記計測された立ち上がり時間に基づいて、前記校正対象の車両用制御装置(101)における前記所定の燃料噴射に対するブースト電圧を補正し、
前記補正後のブースト電圧を前記所定の燃料噴射に対するブースト電圧とする
ことを特徴とする車両用制御装置。
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CN201680075272.5A CN108368806B (zh) | 2015-12-22 | 2016-10-28 | 燃料喷射阀驱动特性校正方法及车辆用控制装置 |
JP2017557762A JP6580163B2 (ja) | 2015-12-22 | 2016-10-28 | 燃料噴射弁駆動特性校正方法及び車両用制御装置 |
DE112016005122.0T DE112016005122B4 (de) | 2015-12-22 | 2016-10-28 | Korrekturverfahren für die Ansteuereigenschaften von Einspritzventilen und Steuervorrichtung für Fahrzeuge |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014005740A (ja) * | 2012-06-21 | 2014-01-16 | Hitachi Automotive Systems Ltd | 内燃機関の制御装置 |
JP2014214837A (ja) * | 2013-04-26 | 2014-11-17 | 日立オートモティブシステムズ株式会社 | 電磁弁の制御装置及びそれを用いた内燃機関の制御装置 |
WO2015004988A1 (ja) * | 2013-07-10 | 2015-01-15 | 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 |
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---|---|---|---|---|
JP3855473B2 (ja) * | 1998-07-08 | 2006-12-13 | いすゞ自動車株式会社 | コモンレール式燃料噴射装置 |
CN101725426B (zh) * | 2006-04-11 | 2013-01-23 | 浙江福爱电子有限公司 | 一种电磁燃油泵喷嘴的驱动控制装置 |
JPWO2009154214A1 (ja) * | 2008-06-19 | 2011-12-01 | ボッシュ株式会社 | 燃料噴射弁の制御装置、制御方法、及び制御プログラム |
JP2010096162A (ja) * | 2008-10-20 | 2010-04-30 | Honda Motor Co Ltd | 内燃機関の燃料噴射制御装置 |
JP5093191B2 (ja) * | 2009-06-09 | 2012-12-05 | 株式会社デンソー | 燃料噴射弁用検出装置 |
DE102010022109B3 (de) * | 2010-05-31 | 2011-09-29 | Continental Automotive Gmbh | Bestimmung des Schließzeitpunkts eines Einspritzventils basierend auf einer Auswertung der Ansteuerspannung unter Verwendung eines adaptierten Referenzspannungssignals |
JP6157889B2 (ja) * | 2013-03-26 | 2017-07-05 | 日立オートモティブシステムズ株式会社 | 燃料噴射弁の制御装置 |
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JP2014005740A (ja) * | 2012-06-21 | 2014-01-16 | Hitachi Automotive Systems Ltd | 内燃機関の制御装置 |
JP2014214837A (ja) * | 2013-04-26 | 2014-11-17 | 日立オートモティブシステムズ株式会社 | 電磁弁の制御装置及びそれを用いた内燃機関の制御装置 |
WO2015004988A1 (ja) * | 2013-07-10 | 2015-01-15 | 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 |
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CN108368806A (zh) | 2018-08-03 |
CN108368806B (zh) | 2020-12-15 |
JP6580163B2 (ja) | 2019-09-25 |
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