JP6896110B2 - 内燃機関の吸込み路の実際のトリミングを動作時に特定する方法 - Google Patents
内燃機関の吸込み路の実際のトリミングを動作時に特定する方法 Download PDFInfo
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- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
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- F02D41/0002—Controlling intake air
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- F02D—CONTROLLING COMBUSTION ENGINES
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Description
・吸気路において吸い込まれる媒体の温度、
・内燃機関の冷却に使用される冷却剤の温度、および
・内燃機関のエンジン回転数
のうちの少なくとも1つを考慮可能である。
Claims (13)
- 内燃機関の吸込み路の実際の吸入管長を動作時に特定する方法であって、
前記内燃機関の吸込み路または排出路における、前記内燃機関のシリンダに対応付け可能な動的な圧力振動を、通常動作時に所定の動作点において測定し、前記圧力振動から、対応する圧力振動信号を生成し、同時に前記動的な圧力振動の前記測定と時間的に関連させて前記内燃機関のクランクシャフト位相角度信号を特定し、
離散フーリエ変換を用い、前記圧力振動信号から、前記クランクシャフト位相角度信号を基準にして、測定した前記圧力振動の少なくとも1つの選択した信号周波数の少なくとも1つの特性の少なくとも1つの実際値を特定する、
内燃機関の吸込み路の実際の吸入管長を動作時に特定する方法において、
前記吸込み路の種々異なる吸入管長と、それぞれ同じ前記信号周波数のそれぞれ対応する前記特性の基準値との間の関係に基づき、それぞれの前記特性の特定した少なくとも1つの前記実際値に対応する前記内燃機関の前記吸込み路の実際の前記吸入管長を特定する、
ことを特徴とする、方法。 - 少なくとも1つのそれぞれの基準値・特性マップに、前記吸込み路の前記吸入管長に依存して、それぞれの前記特性の前記基準値が用意されているか、または
それぞれ対応する前記特性のそれぞれの前記基準値を計算によって特定し、かつ前記特性と、前記吸込み路の前記吸入管長との間の関係を表す、少なくとも1つのそれぞれの代数モデル関数が設けられている、
ことを特徴とする、請求項1記載の方法。 - 選択した前記信号周波数のそれぞれの前記特性の前記実際値の前記特定と、前記内燃機関の前記吸込み路の実際の前記吸入管長の特定とを、前記内燃機関に対応付けられている電子計算ユニットを用いて行い、
それぞれの前記基準値・特性マップまたはそれぞれの前記代数モデル関数は、前記電子計算ユニットに対応付けられている、少なくとも1つの記憶領域に記憶されている、
ことを特徴とする、請求項2記載の方法。 - 少なくとも1つの選択した信号周波数に対するそれぞれの前記特性の前記基準値を、前以て、基準内燃機関において、前記吸込み路の種々異なる吸入管長に依存して特定しておく、ことを特徴とする、請求項2記載の方法。
- 選択した前記信号周波数のそれぞれの前記特性の前記基準値と、前記吸込み路の対応する前記吸入管長とから、選択した前記信号周波数の前記特性と、前記吸込み路の前記吸入管長との間の関係を表す、それぞれ1つのモデル関数を導出する、ことを特徴とする、請求項4記載の方法。
- 選択したそれぞれの前記信号周波数のそれぞれの前記特性の前記基準値の前以ての前記特定は、前記吸込み路の所定の基準吸入管長をあらかじめ設定して、少なくとも1つの所定の動作点において基準内燃機関を計測することによって特徴付けられており、
それぞれ選択した前記信号周波数のそれぞれの前記特性の前記基準値を特定するために、
前記基準内燃機関のシリンダに対応付け可能な、前記吸込み路または前記排出路における動的な前記圧力振動を動作時に測定し、対応する圧力振動信号を生成し、
同時にクランクシャフト位相角度信号を特定し、
離散フーリエ変換を用いて、前記圧力振動信号から、前記クランクシャフト位相角度信号を基準にして、測定した前記圧力振動のそれぞれ選択した前記信号周波数のそれぞれの前記特性の前記基準値を特定し、
前記吸込み路の対応する前記吸入管長に依存して、基準値・特性マップに、特定した前記基準値を記憶する、
請求項5記載の方法。 - 測定した前記圧力振動の少なくとも1つの前記特性として、少なくとも1つの選択した信号周波数の位相角度もしくは振幅、または位相角度および振幅を考慮する、ことを特徴とする、請求項1から6までのいずれか1項記載の方法。
- 少なくとも1つの可変式吸入管を用いて、または少なくとも1つの位置調整可能なスワールフラップを用いて、または複数の前記構成要素からなる組み合わせを用いて、前記吸込み路の前記吸入管長が調整または設定可能である、ことを特徴とする、請求項1から6までのいずれか1項記載の方法。
- 選択した前記信号周波数は、吸込み周波数、または前記吸込み周波数の逓倍である、ことを特徴とする、請求項1から6までのいずれか1項記載の方法。
- 前記内燃機関(1)の前記吸込み路の実際の前記吸入管長を特定する際に、以下の別の複数の動作パラメータ
前記吸気路において吸い込まれる媒体の温度、
前記内燃機関の冷却に使用される冷却剤の温度、
前記内燃機関のエンジン回転数
のうち少なくとも1つを付加的に考慮する、ことを特徴とする、請求項1から6までのいずれか1項記載の方法。 - 大量生産による圧力センサ(44)を用いて、前記吸込み路における動的な前記圧力振動を測定する、ことを特徴とする、請求項1から6までのいずれか1項記載の方法。
- 歯車およびホールセンサを用いて、クランクシャフト位置フィードバック信号を特定する、ことを特徴とする、請求項1から6までのいずれか1項記載の方法。
- 前記電子計算ユニット(53)は、前記内燃機関(1)を制御するエンジン制御ユニット(50)の構成部分であり、前記エンジン制御ユニット(50)により、前記吸込み路の特定した実際の前記吸入管長に依存して、前記内燃機関(1)を制御するための別の制御量または制御ルーチンの適合化を行う、ことを特徴とする、請求項3から6までのいずれか1項記載の方法。
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DE102017215849B4 (de) | 2017-09-08 | 2019-07-18 | Continental Automotive Gmbh | Verfahren zur Überprüfung der Funktion eines Drucksensors im Luft-Ansaugtrakt oder Abgas-Auslasstrakt eines Verbrennungsmotors im Betrieb und Motor-Steuerungseinheit |
WO2020066548A1 (ja) * | 2018-09-26 | 2020-04-02 | 日立オートモティブシステムズ株式会社 | 内燃機関制御装置 |
US11035307B2 (en) * | 2018-11-13 | 2021-06-15 | Ford Global Technologies, Llc | Systems and methods for reducing vehicle valve degradation |
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US11359563B2 (en) | 2022-06-14 |
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JP2020521909A (ja) | 2020-07-27 |
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WO2018220045A1 (de) | 2018-12-06 |
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