JP7410306B2 - ハイブリッド車両クリープ制御 - Google Patents
ハイブリッド車両クリープ制御 Download PDFInfo
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- JP7410306B2 JP7410306B2 JP2022542296A JP2022542296A JP7410306B2 JP 7410306 B2 JP7410306 B2 JP 7410306B2 JP 2022542296 A JP2022542296 A JP 2022542296A JP 2022542296 A JP2022542296 A JP 2022542296A JP 7410306 B2 JP7410306 B2 JP 7410306B2
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- vehicle
- torque
- engine
- creep
- control system
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/18—Propelling the vehicle
- B60Y2300/18008—Propelling the vehicle related to particular drive situations
- B60Y2300/18058—Creeping
-
- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Description
トルク制限=(車両クリープ速度目標/車両速度)^2*トルクコンバータ伝達関数*オートマチックトランスミッション比。
エンジン202と車両ホイールの第1セットとの間のトルク経路220が切断されている間(ブロック701)、第2電気牽引モーター212を制御して、車両10を自動的に動かすために車両ホイールの第2セットに牽引トルクを提供し、電気車両クリープを提供すること、ここで、電気車両クリープは、エンジン202と車両ホイールの第1セットとの間のトルク経路が接続されているときにエンジン202によって提供されるであろうエンジンクリープトルクの数学的モデルによって制御される。
(1)車両クリープ速度目標(設定値)=シミュレートされたエンジンアイドル速度変数*オートマチックトランスミッション比*デファレンシャル比*ホイールサイズ
(2)トルク制限=(車両クリープ速度目標/車両速度)^2*トルクコンバータ伝達関数*オートマチックトランスミッション比
-タービン速度がインペラ速度よりも高い場合に、トルクコンバータ217によってトルク増加が提供されないか、又は
-速度設定値が低すぎる場合に、車両10を減速させようとするために電気機械によって負のトルクが提供される。
Claims (17)
- 車両クリープを提供するために車両の動きを制御するための制御システムであって、前記車両はエンジンと電気牽引モーターとを備え、前記制御システムは1つ又は複数のコントローラを備え、前記制御システムは、
前記エンジンと車両ホイールの第1セットとの間のトルク経路が切断されている間、前記電気牽引モーターを制御して、前記車両を自動的に動かすために車両ホイールの第2セットに牽引トルクを提供し、電気車両クリープを提供するように構成されており、電気車両クリープを提供するための前記トルクは、前記エンジンと前記車両ホイールの第1セットとの間の前記トルク経路が接続されたときに前記エンジンによって提供されるであろうエンジンクリープトルクの数学的モデルに依存して制御され、
前記数学的モデルは、
シミュレートされたエンジンアイドル速度変数に依存し、
前記シミュレートされたエンジンアイドル速度変数と車両速度変数との間の差、及び前記シミュレートされたエンジンアイドル速度変数と車両速度変数との間の比率の一方に依存し、
前記差又は前記比率に依存するシミュレートされたトルクコンバータ特性に依存する、
制御システム。 - 前記1つ又は複数のコントローラは、
情報を受信するための電気入力を有する少なくとも1つの電子プロセッサと、
前記少なくとも1つの電子プロセッサに電気的に結合され、その中に格納された命令を有している少なくとも1つの電子メモリデバイスと、
を集合的に備え、
前記少なくとも1つの電子プロセッサは、前記少なくとも1つのメモリデバイスにアクセスし、その上で前記命令を実行して、前記制御システムに、前記情報に応じて前記電気牽引モーターを制御させるように構成されている、
請求項1に記載の制御システム。 - 前記エンジンが非アクティブ状態にある間に、前記電気牽引モーターを制御して前記電気車両クリープを提供するように構成されている、請求項1又は2に記載の制御システム。
- 前記数学的モデルは、車両速度に依存する、請求項1から3までのいずれか1項に記載の制御システム。
- 前記数学的モデルは、周囲温度、動作温度、周囲圧力、湿度又はエンジンアクセサリーの負荷の少なくとも1つに依存する、請求項1から4までのいずれか1項に記載の制御システム。
- 前記数学的モデルは、トルクコンバータ流体に関連する動作温度、及び異なる前進ギア及び/又は異なる後進ギアで車両クリープを提供するように動作可能なオートマチックトランスミッションのシミュレートされたギア比の一方又は両方に依存する、請求項1から5までのいずれか1項に記載の制御システム。
- 前記車両を自動的に動かすことは、前記電気牽引モーターの前記牽引トルクを制御して、車両速度と、前記数学的モデルによって決定される車両クリープ速度目標との間の差を低減させることを備える、請求項1から6までのいずれか1項に記載の制御システム。
- 前記車両クリープ速度目標は、少なくとも、シミュレートされたエンジンアイドル速度、シミュレートされたオートマチックトランスミッション比、デファレンシャル比、及びホイールサイズの関数である、請求項7に記載の制御システム。
- 前記数学的モデルは、前記モデル化されたエンジンクリープトルクに基づいて、前記電気牽引モーターの前記牽引トルクを制限して、外部環境が前記車両を減速できるように構成されている、請求項7又は8に記載の制御システム。
- 外部環境が前記車両を減速できるように前記牽引トルクを制御することは、前記数学的モデルによって決定されるトルク制限値に前記電気牽引モーターの前記牽引トルクを飽和させることを備え、前記トルク制限値は、前記車両が平地にあるときに前記車両速度を前記車両クリープ速度目標に到達させることができるように構成されているとともに、前記車両が上り坂にあるときに前記車両速度が前記車両クリープ速度目標に到達できないか又は前記車両クリープ速度目標を維持できないように構成されている、請求項9に記載の制御システム。
- 前記トルク制限値は、少なくとも、
(i)前記車両クリープ速度目標、
(ii)車両速度、
(iii)シミュレートされたオートマチックトランスミッション比、並びに
(iv)スリップ比の関数として容量係数、トルク比及びトルクコンバータ効率の少なくとも1つをエミュレートするトルクコンバータ伝達関数
の関数である、請求項10に記載の制御システム。 - 前記トルク制限値は、以下の式に従って定義される:
トルク制限値=(車両クリープ速度目標/車両速度)^2*トルクコンバータ伝達関数*オートマチックトランスミッション比
請求項11に記載の制御システム。 - 電気車両クリープ中にエンジンを第1モードから第2モードに移行する必要があることを示す信号を受信し、ここで、前記第1モードでは、前記エンジンが非アクティブ状態にあり、前記トルク経路が切断され、前記電気牽引モーターが電気車両クリープを提供し、前記第2モードでは、前記エンジンがアクティブ状態にあり、前記トルク経路が接続され、前記エンジンが少なくとも部分的に車両クリープを提供し、
前記信号の受信に応じて、前記トルク経路の接続と前記エンジンのアクティブ化とを引き起こす、
ように構成された、請求項1から12までのいずれか1項に記載の制御システム。 - 前記第1モードは電気車両モードであり、前記第2モードはハイブリッド電気車両モードであり、前記ハイブリッド電気車両モードでは、前記電気牽引モーターは、前記車両ホイールの第2セットに牽引トルクを提供するように動作可能であり、前記制御システムは、車両速度の低下に応答して牽引トルクを増加させ、エンジン速度がエンジンアイドル速度目標を下回るように、前記電気牽引モーターを制御するように構成されている、請求項13に記載の制御システム。
- 請求項1から14までのいずれか1項に記載の前記制御システム、前記エンジン、及び前記電気牽引モーターを備える、車両。
- 車両のエンジン及び電気牽引モーターを制御する方法であって、前記方法は、
前記エンジンと車両ホイールの第1セットとの間のトルク経路が切断されている間、前記電気牽引モーターを制御して、前記車両を自動的に動かすために車両ホイールの第2セットに牽引トルクを提供し、電気車両クリープを提供することを備え、前記電気車両クリープを提供するための前記トルクは、前記エンジンと前記車両ホイールの第1セットとの間の前記トルク経路が接続されているときに前記エンジンによって提供されるであろうエンジンクリープトルクの数学的モデルに依存して制御され、
前記数学的モデルは、
シミュレートされたエンジンアイドル速度変数に依存し、
前記シミュレートされたエンジンアイドル速度変数と車両速度変数との間の差、及び前記シミュレートされたエンジンアイドル速度変数と車両速度変数との間の比率の一方に依存し、
前記差又は前記比率に依存するシミュレートされたトルクコンバータ特性に依存する、
方法。 - 実行されたとき、請求項16に記載の方法を実行するように構成されたコンピュータソフトウェア。
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PCT/EP2021/050321 WO2021140235A1 (en) | 2020-01-09 | 2021-01-10 | Hybrid vehicle creep control |
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JP2010143418A (ja) | 2008-12-19 | 2010-07-01 | Nissan Motor Co Ltd | ハイブリッド車両の発進制御装置 |
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