JP5026334B2 - 角速度及び角加速度算出装置、トルク推定装置、燃焼状態推定装置 - Google Patents
角速度及び角加速度算出装置、トルク推定装置、燃焼状態推定装置 Download PDFInfo
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- JP5026334B2 JP5026334B2 JP2008128132A JP2008128132A JP5026334B2 JP 5026334 B2 JP5026334 B2 JP 5026334B2 JP 2008128132 A JP2008128132 A JP 2008128132A JP 2008128132 A JP2008128132 A JP 2008128132A JP 5026334 B2 JP5026334 B2 JP 5026334B2
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- 238000002485 combustion reaction Methods 0.000 title claims description 75
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- 238000002347 injection Methods 0.000 description 4
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- 229910052760 oxygen Inorganic materials 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of the engine
-
- 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
- F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/16—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal
- G01P15/165—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by evaluating the time-derivative of a measured speed signal for measuring angular accelerations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/489—Digital circuits 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1415—Controller structures or design using a state feedback or a state space representation
- F02D2041/1417—Kalman filter
-
- 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
-
- 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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1002—Output torque
- F02D2200/1004—Estimation of the output torque
-
- 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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1012—Engine speed gradient
-
- 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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Description
図1は、本実施の形態に係る燃焼状態推定装置を含む内燃機関の概略図である。図1に示す内燃機関は、4ストローク直列4気筒のエンジンを例として説明する。まず、図1に示すエンジン10は、各気筒内にピストン20を有し、ピストン20の上方に燃焼室23が形成される。
Claims (9)
- 内燃機関におけるクランク角度と、当該前記クランク角度での時刻とを検出するクランク角度検出手段と、
所定のクランク角度間隔に基づき、前記クランク角度検出手段で検出した前記クランク角度と前記時刻とを補正するクランク角度補正手段と、
前記クランク角度補正手段で補正した前記クランク角度に対する前記時刻の関数を周期関数と見なせる形に変換し、当該前記関数に対して周波数空間における代数的微分を利用し、前記クランク角度を引数とするクランクの角速度及び角加速度を算出する角速度及び角加速度算出手段とを備える前記内燃機関における前記クランクの角速度及び角加速度算出装置。 - 請求項1に記載の角速度及び角加速度算出装置であって、
前記角速度及び角加速度算出手段は、窓関数を用いて前記関数を周期関数と見なせる形に変換することを特徴とする角速度及び角加速度算出装置。 - 請求項1又は請求項2に記載の角速度及び角加速度算出装置であって、
前記角速度及び角加速度算出手段は、前記離散フーリエ変換の周波数成分のうち、所定の周波数より高い部分を帯域制限することを特徴とする角速度及び角加速度算出装置。 - 請求項1乃至請求項3のいずれか1つに記載の角速度及び角加速度算出装置と、
前記クランク角度補正手段で補正した前記クランク角度と前記角速度及び角加速度算出装置で算出された前記クランクの前記角速度及び前記角加速度を、前記内燃機関のピストン、コネクティングロッド及び前記クランクを含む系の運動方程式に適用して前記クランクの軸トルクを算出する軸トルク算出手段とを備える前記内燃機関のトルク推定装置。 - 請求項4に記載のトルク推定装置であって、
前記軸トルク算出手段は、前記コネクティングロッドを前記ピストン側と前記クランク側との2質点モデルとした前記運動方程式を用いることを特徴とするトルク推定装置。 - 請求項4又は請求項5に記載のトルク推定装置であって、
前記運動方程式がクランク軸周りの慣性モーメントと角加速度と外力トルクとの関係式と見なすことができる特異クランク角度において、前記運動方程式で算出されるトルクを外力トルクと推定する外力トルク推定手段をさらに備えたことを特徴とするトルク推定装置。 - 請求項6に記載のトルク推定装置であって、
前記外力トルク推定手段で推定した前記外力トルクを、前記軸トルク算出手段で算出した前記軸トルクから減算することでガス圧トルクを算出するガス圧トルク算出手段をさらに備えたことを特徴とするトルク推定装置。 - 請求項7に記載のトルク推定装置であって、
前記ガス圧トルク算出手段で算出した前記ガス圧トルクを、前記クランク角度の所定の範囲で積分することでガス圧仕事量を算出するガス圧仕事量算出手段をさらに備えたことを特徴とするトルク推定装置。 - 請求項1乃至請求項3のいずれか1つに記載の角速度及び角加速度算出装置で算出した前記角加速度、
請求項7に記載のトルク推定装置で算出した前記ガス圧トルク、
及び請求項8に記載のトルク推定装置で算出した前記ガス圧仕事量のうち少なくともいずれか1つを含む値に基づいて前記内燃機関の燃焼状態を推定する燃焼状態推定装置。
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JP2008128132A JP5026334B2 (ja) | 2008-05-15 | 2008-05-15 | 角速度及び角加速度算出装置、トルク推定装置、燃焼状態推定装置 |
US12/434,255 US7958779B2 (en) | 2008-05-15 | 2009-05-01 | Angular velocity/angular acceleration calculator, torque estimator, and combustion state estimator |
DE102009021293.0A DE102009021293B4 (de) | 2008-05-15 | 2009-05-14 | Winkelgeschwindigkeits-/Winkelbeschleunigungsberechnungseinheit, Momentschätzeinheit und Verbrennungszustandsschätzeinheit |
CN2009101390579A CN101581257B (zh) | 2008-05-15 | 2009-05-15 | 角速度和角加速度计算装置、转矩推算装置、燃烧状态推算装置 |
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JP5026334B2 true JP5026334B2 (ja) | 2012-09-12 |
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US (1) | US7958779B2 (ja) |
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DE (1) | DE102009021293B4 (ja) |
Cited By (2)
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JP4417331B2 (ja) * | 2003-09-24 | 2010-02-17 | 株式会社エー・アンド・デイ | 多信号解析装置 |
DE10356133B4 (de) * | 2003-12-02 | 2005-12-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Ermittlung des Brennbeginns von Verbrennungskraftmaschinen |
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DE102006043064A1 (de) * | 2006-09-14 | 2008-03-27 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren und Vorrichtung zur Erkennung von Verbrennungsaussetzern einer Verbrennungskraftmaschine |
DE102006053255B3 (de) * | 2006-11-08 | 2008-01-10 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren zum Bestimmen des Zylinderinnendrucks einer Brennkraftmaschine |
US7530261B2 (en) * | 2007-02-12 | 2009-05-12 | Delphi Technologies, Inc. | Fourier-based misfire detection strategy |
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2008
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- 2009-05-01 US US12/434,255 patent/US7958779B2/en active Active
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5843937B1 (ja) * | 2014-10-02 | 2016-01-13 | 三菱電機株式会社 | 内燃機関の制御装置 |
JP5985021B1 (ja) * | 2015-08-20 | 2016-09-06 | 三菱電機株式会社 | 内燃機関の制御装置 |
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DE102009021293A1 (de) | 2010-01-07 |
JP2009275618A (ja) | 2009-11-26 |
US20090282903A1 (en) | 2009-11-19 |
CN101581257A (zh) | 2009-11-18 |
CN101581257B (zh) | 2012-07-18 |
US7958779B2 (en) | 2011-06-14 |
DE102009021293B4 (de) | 2014-02-06 |
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