JP2019206966A - 電磁式燃料噴射器の立ち上がり時間を決定する方法 - Google Patents
電磁式燃料噴射器の立ち上がり時間を決定する方法 Download PDFInfo
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- 239000000446 fuel Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 37
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- 238000001514 detection method Methods 0.000 description 1
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- 230000004907 flux Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
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- 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
- F02D41/3082—Control of electrical fuel pumps
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- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2438—Active learning methods
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- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
- F02D41/2467—Characteristics of actuators for injectors
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- 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
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
-
- 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
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
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- 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
-
- 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
- F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
-
- 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
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
本願は、2018年5月28日に出願された伊国特許出願第102018000005765号の優先権を主張するものであり、参照することによりその開示内容全体は本明細書中に援用される。
2 エンジン
3 シリンダ
4 噴射器
5 共通経路
6 高圧ポンプ
7 低圧ポンプ
8 タンク
9 電子制御ユニット
10 噴射器4の長手軸線
11 噴射ノズル
12 支持本体
13 送給チャネル
14 電磁式アクチュエータ
15 噴射バルブ
16 コイル
17 円環状ケーシング
18 固定磁極
19 可動電機子
20 磁的電機子
21 環状台座
22 磁的ワッシャ
23 プランジャ
24 バルブ・シート
25 中央孔
26 閉じスプリング
27 衝当体
100 端子
101 端子
t1 時点
t2 時点
t3 時点
t4 時点
t5 時点
A 初期領域
B 瞬発領域
C 線形領域
Q 燃料量
TINJ 噴射時間
THYD 油圧時間
TC 閉じ時間
TZ ゼロ化時間
TF 飛翔時間
TO 立ち上がり時間
v1 第1の時間的な電圧進展
v2 第2の時間的な電圧進展
Δv 電圧差
Claims (9)
- 閉じ位置と開き位置との間を移動して噴射バルブ(15)を開閉する可動プランジャ(23)と、コイル(16)を備えると共に、前記可動プランジャ(23)を前記閉じ位置と前記開き位置との間で移動させるべく設計された電磁式アクチュエータ(14)と、を備えて成る電磁式燃料噴射器(4)の立ち上がり時間(TO)を決定する方法であって、
該方法は、
前記電磁式アクチュエータ(14)の一連の漸進的に増大する励起時間(TINJ)を用いて前記電磁式燃料噴射器(4)を制御する段階と、
前記電磁式燃料噴射器(4)の制御毎に、前記噴射バルブ(15)の閉じ動作の存在もしくは不在を決定する段階と、
前記噴射バルブ(15)の閉じ動作の不在が決定された前記電磁式アクチュエータ(14)の最後の励起時間(TINJ)と、前記噴射バルブ(15)の閉じ動作の存在が決定された前記電磁式アクチュエータ(14)の最初の励起時間(TINJ)との間における中間値に等しい立ち上がり時間(TO)を識別すする段階とを備えて成る、方法において、
前記電磁式燃料噴射器(4)の制御毎に、前記噴射バルブ(15)の閉じ動作の存在もしくは不在を決定する前記段階は、
試験の開始時点(t1)において、前記噴射バルブ(15)の開き動作を確かに決定しない試験電流(i)を前記電磁式アクチュエータ(14)の前記コイル(16)に通して流すために、前記コイル(16)に対して正電圧(v)を印加する段階と、
前記試験の終了時点(t3)において、前記試験電流(i)を打ち消すために、前記電磁式アクチュエータ(14)の前記コイル(16)に対して負電圧(v)を印加する段階と、
前記試験電流(i)の打ち消しの後で、前記電磁式アクチュエータ(14)の前記コイル(16)の少なくとも一方の端部において比較用の時間的な電圧進展(v2)を検出する段階と、
前記電磁式アクチュエータ(14)の励起の開始時点(t1)において、前記噴射バルブ(15)の開き動作を決定し得るであろう起動電流(i)を前記電磁式アクチュエータ(14)の前記コイル(16)を通して流すために、前記コイル(16)に対して正電圧(v)を印加する段階と、
前記電磁式アクチュエータ(14)の励起の終了時点(t2)において、前記起動電流(i)を打ち消すために、前記電磁式アクチュエータ(14)の前記コイル(16)に対して負電圧(v)を印加する段階と、
前記起動電流(i)の打ち消しの後で、前記電磁式アクチュエータ(14)の前記コイル(16)の少なくとも一方の端部にて起動用の時間的な電圧進展(v1)を検出する段階と、
前記起動用の時間的な電圧進展(v1)と前記比較用の時間的な電圧進展(v2)との間の電圧差(Δv)を算出する段階と、
前記電圧差(Δv)の一次時間微分値(dΔv/dt)を算出する段階と、
前記電圧差(Δv)の前記一次時間微分値(dΔv/dt)の最大値を算出する段階と、
前記電圧差(Δv)の前記一次時間微分値(dΔv/dt)の前記最大値が、絶対値にて、第1閾値を超過したときにのみ、前記電磁式燃料噴射器(4)の閉じ動作の存在を識別する段階と、
前記電圧差(Δv)の前記一次時間微分値(dΔv/dt)の前記最大値が、絶対値にて、前記第1閾値以下であるときにのみ、前記電磁式燃料噴射器(4)の閉じ動作の不在を識別すする段階とを備えて成ることを特徴とする、方法。 - 前記方法は、
前記立ち上がり時間(TO)の期待値を確立する段階と、
前記電磁式アクチュエータ(14)の前記一連の漸進的に増大する励起時間(TINJ)を、前記立ち上がり時間(TO)の前記期待値に中心合わせする段階とを備えて成る、請求項1に記載の方法。 - 前記方法は、
前記噴射バルブ(15)の閉じ動作の存在又は不在を決定する上で時間分解能を確立する段階と、
前記噴射バルブ(15)の閉じ動作の存在又は不在を決定する上で、前記電磁式アクチュエータ(14)の一連の漸進的に増大する励起時間(TINJ)における該電磁式アクチュエータ(14)の各励起時間(TINJ)を、前記時間分解能に等しい増大分を以て増大する段階とを備えて成る、請求項1又は2に記載の方法。 - 前記方法は、時間的様式で、前記起動電流(i)が打ち消される第1時点(t4)を、前記試験電流(i)が打ち消される第2時点(t4)に整列させることにより、前記起動用の時間的な電圧進展(v1)を前記比較用の時間的な電圧進展(v2)と同期させる更なる段階を備えて成る、請求項1、2又は3に記載の方法。
- 前記方法は、
前記電圧差(Δv)の最大値を算出する段階と、
前記電圧差(Δv)の前記最大値が、絶対値にて、第2閾値を超過したときにのみ、前記電磁式燃料噴射器(4)の閉じ動作の存在を識別する段階と、
前記電圧差(Δv)の前記最大値が、絶対値にて、前記第2閾値以下であれば、前記電磁式燃料噴射器(4)の閉じ動作の不在を識別する段階とを備えて成る、請求項1〜4のいずれか一項に記載の方法。 - 前記方法は、前記電圧差(Δv)に対し、低域通過フィルタ、特に動窓型フィルタを適用する更なる段階を備えて成る、請求項1〜5のいずれか一項に記載の方法。
- 前記方法は、前記起動用の時間的な電圧進展(v1)及び前記比較用の時間的な電圧進展(v2)が検出されるとき、前記正電圧(v)又は前記負電圧(v)に対してアンチエイリアス・フィルタを適用する更なる段階を備えて成る、請求項1〜6のいずれか一項に記載の方法。
- 前記電磁式アクチュエータ(14)の前記コイル(16)は、高電圧端子(100)及び低電圧端子(101)を有し、且つ、
前記正電圧(v)又は前記負電圧(v)は、第1の時間的な電圧進展(v1)及び第2の時間的な電圧進展(v2)が検出されるときに、前記コイル(16)の前記2つの端子(100、101)間で測定される、請求項1〜7のいずれか一項に記載の方法。 - 前記電磁式アクチュエータ(14)の前記コイル(16)は、高電圧端子(100)及び低電圧端子(101)を有し、且つ、
前記正電圧(v)又は前記負電圧(v)は、前記第1の時間的な電圧進展(v1)及び前記第2の時間的な電圧進展(v2)が検出されるときに、前記コイル(16)の前記2つの低電圧端子(101)と、電気的アースとの間で測定される、請求項1〜7のいずれか一項に記載の方法。
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IT102018000005765A IT201800005765A1 (it) | 2018-05-28 | 2018-05-28 | Metodo per determinare un tempo di apertura di un iniettore elettromagnetico di carburante |
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US11371459B2 (en) * | 2018-11-29 | 2022-06-28 | Hitachi Astemo, Ltd. | Control device for internal combustion engine |
IT202000004003A1 (it) | 2020-02-26 | 2021-08-26 | Marelli Europe Spa | Metodo di verifica della ripetibilita' dell'iniezione in un iniettore elettromagnetico di carburante e corrispondente banco di prova |
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IT1399312B1 (it) * | 2010-04-07 | 2013-04-16 | Magneti Marelli Spa | Metodo di controllo di un iniettore elettromagnetico di carburante |
DE102010018290B4 (de) * | 2010-04-26 | 2016-03-31 | Continental Automotive Gmbh | Elektrische Ansteuerung eines Ventils basierend auf einer Kenntnis des Schließzeitpunkts des Ventils |
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IT201800005760A1 (it) * | 2018-05-28 | 2019-11-28 | Metodo per determinare un istante di chiusura di un iniettore elettromagnetico di carburante |
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- 2019-05-28 EP EP19177134.4A patent/EP3575583B1/en active Active
- 2019-05-28 US US16/423,906 patent/US10830172B2/en active Active
- 2019-05-28 CN CN201910453606.3A patent/CN110541770B/zh active Active
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Patent Citations (4)
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JP2006125371A (ja) * | 2004-11-01 | 2006-05-18 | Denso Corp | 蓄圧式燃料噴射装置 |
US20130073188A1 (en) * | 2010-05-31 | 2013-03-21 | Gerd Rösel | Determining the Closing Point in Time of an Injection Valve on the Basis of an Analysis of the Actuation Voltage Using an Adapted Reference Voltage Signal |
WO2016091848A1 (en) * | 2014-12-09 | 2016-06-16 | Delphi International Operations Luxembourg S.À R.L. | Fuel injection control in an internal combustion engine |
JP2016180345A (ja) * | 2015-03-24 | 2016-10-13 | 株式会社ケーヒン | 燃料噴射弁の制御装置 |
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CN110541770B (zh) | 2022-11-08 |
US20190360423A1 (en) | 2019-11-28 |
JP7330759B2 (ja) | 2023-08-22 |
IT201800005765A1 (it) | 2019-11-28 |
US10830172B2 (en) | 2020-11-10 |
EP3575583A1 (en) | 2019-12-04 |
CN110541770A (zh) | 2019-12-06 |
EP3575583B1 (en) | 2021-06-30 |
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