JP2009275521A - 内燃機関の制御装置 - Google Patents
内燃機関の制御装置 Download PDFInfo
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- JP2009275521A JP2009275521A JP2008124762A JP2008124762A JP2009275521A JP 2009275521 A JP2009275521 A JP 2009275521A JP 2008124762 A JP2008124762 A JP 2008124762A JP 2008124762 A JP2008124762 A JP 2008124762A JP 2009275521 A JP2009275521 A JP 2009275521A
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- Prior art keywords
- knock
- frequency
- internal combustion
- combustion engine
- digital signal
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 28
- 238000004458 analytical method Methods 0.000 claims abstract description 41
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 238000004364 calculation method Methods 0.000 claims description 13
- 230000002123 temporal effect Effects 0.000 abstract 1
- 230000006870 function Effects 0.000 description 30
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000001228 spectrum Methods 0.000 description 9
- 238000003672 processing method Methods 0.000 description 6
- 230000014509 gene expression Effects 0.000 description 4
- 238000012935 Averaging Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000003775 Density Functional Theory Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
- F02P5/15—Digital data processing
- F02P5/152—Digital data processing dependent on pinking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
- G01L23/225—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines circuit arrangements therefor
-
- 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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/286—Interface circuits comprising means for signal processing
- F02D2041/288—Interface circuits comprising means for signal processing for performing a transformation into the frequency domain, e.g. Fourier transformation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
【解決手段】ノック検出手段として、ノックセンサまたは筒内圧センサの出力信号の高周波成分をカットするローパスフィルタ14、フィルタ出力信号を所定時間毎にA/D変換するA/D変換部15、A/D変換データをデジタル信号処理して時間−周波数解析を行うDFT処理部16a,16bを含み、DFT処理部によるデジタル信号処理結果に基づきノック検出を行う手段であり、DFT処理部は、A/D変換データを所定のサンプル点数毎に区切ることで観測区間を設定する観測区間設定手段、設定された観測区間毎に離散フーリエ変換により複数の周波数を同時に解析する複数周波数同時解析手段を有し、解析対象周波数に応じて観測区間に含まれるサンプル点数を変更可能とする。
【選択図】図4
Description
・全周波数帯を解析するため演算量と必要メモリ量が多い。
・観測区間内のサンプル点数が2のべき乗に限定されるため解析対象周波数の選択肢が少ない。
・観測区間内のサンプル点数が固定されるため、周波数に対する時間分解能にばらつきが生じる(高周波になるほど振動強度の変化は高速になるが、低周波の低速な変化を捉えるように長めに設定した解析区間であれば、低速な変化は捉えられても、高周波の高速な変化を捉えることができない場合が生じる)
という問題があった。
Claims (5)
- 内燃機関に設けられたノックセンサまたは筒内圧センサの出力信号に基づいてノックの発生を判定するノック検出手段と、
前記ノック検出手段によるノック検出時にノックを回避するためのノック制御を行うノック制御手段と
を備えた内燃機関の制御装置において、
前記ノック検出手段は、
前記ノックセンサまたは筒内圧センサの出力信号の高周波成分をカットするローパスフィルタと、
前記ローパスフィルタの出力信号を所定時間毎にA/D変換するA/D変換手段と、
前記A/D変換手段によりA/D変換されたデータをデジタル信号処理して時間−周波数解析を行うデジタル信号処理手段と
を含み、前記デジタル信号処理手段によるデジタル信号処理結果に基づいてノック検出を行う手段であり、
前記デジタル信号処理手段は、
前記A/D変換手段によりA/D変換されたデータを所定のサンプル点数毎に区切ることで観測区間を設定する観測区間設定手段と、
前記観測区間設定手段により設定された観測区間毎に離散フーリエ変換により複数の周波数を同時に解析する複数周波数同時解析手段と
を有し、
前記観測区間設定手段は、解析対象周波数に応じて観測区間に含まれるサンプル点数を変更する
ことを特徴とする内燃機関の制御装置。 - 請求項1に記載の内燃機関の制御装置において、
前記観測区間設定手段は、観測区間を前の観測区間と一部オーバーラップしながら移動させる
ことを特徴とする内燃機関の制御装置。 - 請求項1または2に記載の内燃機関の制御装置において、
前記観測区間設定手段は、解析対象周波数に応じたサンプル点数を、低周波数側では多く、高周波数側では少なくする
ことを特徴とする内燃機関の制御装置。 - 請求項1から3までのいずれか1項に記載の内燃機関の制御装置において、
前記複数周波数同時解析手段は、離散フーリエ変換により複数周波数を同時に解析する際、演算に用いる定数をテーブルにあらかじめ記憶させておく
ことを特徴とする内燃機関の制御装置。 - 請求項4に記載の内燃機関の制御装置において、
前記テーブルには、基底関数と窓関数から算出された定数が設定されている
ことを特徴とする内燃機関の制御装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008124762A JP4550917B2 (ja) | 2008-05-12 | 2008-05-12 | 内燃機関の制御装置 |
US12/189,466 US7788022B2 (en) | 2008-05-12 | 2008-08-11 | Control apparatus for internal combustion engine |
DE102008053132.4A DE102008053132B4 (de) | 2008-05-12 | 2008-10-24 | Steuerapparat für einen Verbrennungsmotor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008124762A JP4550917B2 (ja) | 2008-05-12 | 2008-05-12 | 内燃機関の制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009275521A true JP2009275521A (ja) | 2009-11-26 |
JP4550917B2 JP4550917B2 (ja) | 2010-09-22 |
Family
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Family Applications (1)
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JP2008124762A Active JP4550917B2 (ja) | 2008-05-12 | 2008-05-12 | 内燃機関の制御装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7788022B2 (ja) |
JP (1) | JP4550917B2 (ja) |
DE (1) | DE102008053132B4 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7788022B2 (en) * | 2008-05-12 | 2010-08-31 | Mitsubishi Electric Corporation | Control apparatus for internal combustion engine |
JP2022115331A (ja) * | 2021-01-28 | 2022-08-09 | 本田技研工業株式会社 | 回転数検出装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9174645B2 (en) * | 2007-05-17 | 2015-11-03 | Fca Us Llc | Systems and methods for detecting and reducing high driveline torsional levels in automobile transmissions |
JP4583477B2 (ja) * | 2008-05-14 | 2010-11-17 | 三菱電機株式会社 | 内燃機関の制御装置 |
DE102009051624B4 (de) * | 2009-07-31 | 2021-04-01 | Vitesco Technologies Germany Gmbh | Verfahren zur Spaktralanalyse eines Signals einer Brennkraftmaschine sowie Steuergerät für eine Brennkraftmaschine zur Durchführung eines derartigen Verfahrens |
US8510016B2 (en) * | 2009-10-30 | 2013-08-13 | GM Global Technology Operations LLC | Method and system for controlling an engine using in-cylinder pressure sensor signals |
JP5645573B2 (ja) * | 2010-09-29 | 2014-12-24 | 三菱電機株式会社 | 内燃機関のノック制御装置 |
FR2976074B1 (fr) * | 2011-06-01 | 2013-05-17 | IFP Energies Nouvelles | Methode d'estimation de l'intensite du cliquetis d'un moteur a combustion interne par inversion d'une equation d'onde |
US8538666B2 (en) * | 2011-06-13 | 2013-09-17 | GM Global Technology Operations LLC | CPS knock detection system |
JP2014080918A (ja) * | 2012-10-16 | 2014-05-08 | Toyota Motor Corp | 内燃機関の筒内圧検出装置 |
US9593631B2 (en) * | 2015-03-24 | 2017-03-14 | General Electric Company | System and method for locating an engine event |
WO2018044294A1 (en) * | 2016-08-31 | 2018-03-08 | General Electric Company | System and method for determining the timing of an engine event |
JP6699480B2 (ja) * | 2016-09-16 | 2020-05-27 | 株式会社デンソー | 信号処理装置 |
JP7352136B2 (ja) * | 2019-06-06 | 2023-09-28 | マツダ株式会社 | エンジンの制御装置 |
Citations (5)
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JPH11303673A (ja) * | 1998-04-21 | 1999-11-02 | Denso Corp | 内燃機関用制御信号処理システム |
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JP3093467B2 (ja) | 1992-08-28 | 2000-10-03 | 株式会社デンソー | エンジンのノック検出装置 |
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JP2002357156A (ja) | 2001-05-30 | 2002-12-13 | Mitsubishi Electric Corp | 内燃機関用ノック制御装置 |
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2008
- 2008-05-12 JP JP2008124762A patent/JP4550917B2/ja active Active
- 2008-08-11 US US12/189,466 patent/US7788022B2/en active Active
- 2008-10-24 DE DE102008053132.4A patent/DE102008053132B4/de active Active
Patent Citations (5)
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JP3098104B2 (ja) * | 1992-06-17 | 2000-10-16 | 富士通テン株式会社 | ノッキング制御装置 |
JPH11303673A (ja) * | 1998-04-21 | 1999-11-02 | Denso Corp | 内燃機関用制御信号処理システム |
JP2004309267A (ja) * | 2003-04-04 | 2004-11-04 | Denso Corp | ノッキング検出装置 |
JP2004340107A (ja) * | 2003-05-19 | 2004-12-02 | Mitsubishi Electric Corp | ノッキング検出装置および検出法 |
JP2004353531A (ja) * | 2003-05-28 | 2004-12-16 | Denso Corp | 内燃機関のノック制御装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7788022B2 (en) * | 2008-05-12 | 2010-08-31 | Mitsubishi Electric Corporation | Control apparatus for internal combustion engine |
JP2022115331A (ja) * | 2021-01-28 | 2022-08-09 | 本田技研工業株式会社 | 回転数検出装置 |
JP7153749B2 (ja) | 2021-01-28 | 2022-10-14 | 本田技研工業株式会社 | 回転数検出装置 |
Also Published As
Publication number | Publication date |
---|---|
US20090277247A1 (en) | 2009-11-12 |
JP4550917B2 (ja) | 2010-09-22 |
US7788022B2 (en) | 2010-08-31 |
DE102008053132A1 (de) | 2009-12-03 |
DE102008053132B4 (de) | 2015-02-12 |
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