JP2016068938A - ハイブリッド車両のクリープトルク制御装置及び方法 - Google Patents
ハイブリッド車両のクリープトルク制御装置及び方法 Download PDFInfo
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- JP2016068938A JP2016068938A JP2015177418A JP2015177418A JP2016068938A JP 2016068938 A JP2016068938 A JP 2016068938A JP 2015177418 A JP2015177418 A JP 2015177418A JP 2015177418 A JP2015177418 A JP 2015177418A JP 2016068938 A JP2016068938 A JP 2016068938A
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- creep torque
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
Abstract
Description
ハイブリッド車両は、エンジンとモータとで構成される二つの動力源で走行する過程で、エンジンとモータとをうまく調和するように動作させることによって、最適の出力トルクが提供される。
図4に示すように、ハイブリッド車両が、停止前の変速をする前にクリープトルクが上昇して0トルクを超えれば、ハイブリッド車両の燃費が悪化する。そして、停止前の変速中はトルク変動が発生するので、変速感が悪化する。
設定されたクリープトルクファクターは、車速が0である場合のクリープトルクファクターに設定される。
変速段及びブレーキ量によるクリープトルクファクターは、実変速区間でクリープトルクを0以下に出力するように設定される。
データは、加速ペダルの位置、ブレーキペダルの位置、車両の速度及び車両の変速段の少なくともいずれか一つに関する情報を含む。
制御器は、現在変速段が3段又は2段から、1段に変速中の場合は、実変速区間でクリープトルクを0以下に出力するようにモータを制御する。
制御器は、現在変速段が1段又はR段であり、ブレーキ量が設定値以上であれば、設定されたクリープトルクファクターを適用してクリープトルクを出力するようにモータを制御する。
データ検出器は、加速ペダル位置センサー、ブレーキペダル位置センサー、車速センサー、及び変速段センサーを含む。
明細書全体において、ある部分がある構成要素を「含む」とすると、これは、特に反対する記載がない限り、他の構成要素を除外するものではなく、他の構成要素を更に含むことができることを意味する。
明細書全体にわたって、同一の参照番号で表示された部分は、同一の構成要素を意味する。
また、幾つかの方法は、少なくとも一つの制御器によって実行されてもよい。制御器という用語は、メモリとアルゴリズム構造で解釈される一つ以上の段階を実行するようになったプロセッサーを含むハードウェア装置を言及する。メモリは、アルゴリズム段階を格納するようになっており、プロセッサーは、以下で記載する一つ以上のプロセッサーを行うために、アルゴリズム段階を特別に実行するようになっている。
図1は、本発明の実施例が適用される一般的なハイブリッド車両のシステムを示すブロック図である。
図1のハイブリッドシステムは、説明の便宜のために実施例に示したものである。従って、本発明の実施例に係るハイブリッド車両のクリープトルク制御方法は、図1のハイブリッドシステムだけでなく、他の全てのハイブリッドシステムにも適用することができる。
HCU10は、他の制御器の駆動制御及びハイブリッド走行モードの設定、そしてハイブリッド車両の全般的な動作を制御する最上位制御器であり、各制御器を高速CAN通信ラインで連結して相互間の情報を交換し、協力制御を実行してエンジン20とモータ24の出力トルクを制御する。
MCU14は、運転者の要求トルク信号とハイブリッド車両の運行モード及びバッテリー28のSOC状態により、モータ24の全般的な動作を制御する。
エンジン20は、動力源として始動オンの状態で動力を出力する。
エンジンクラッチ22は、エンジン20とモータ24との間に配置され、HCU10の制御信号の入力を受けてハイブリッド車両の走行モードにより選択的にエンジン20とモータ24を連結させる。
変速機26は、エンジンクラッチ22の結合及び解除によって決定されるエンジン20の出力トルクとモータ24の出力トルクとの和が入力トルクに供給され、車速と運行条件により任意の変速段が選択されて、駆動力を駆動ホィールに出力することによって走行を維持する。
バッテリー28は、HEVモードでエンジン20の出力を補助するか、EVモードで走行を提供するためにモータ24に電圧を供給し、回生制動エネルギーを回収して充電する。
上述したものを含むハイブリッドシステムは、一般に当業者に広く知られているため、各構成に対する詳しい説明は省略する。
図2に示すように、本発明の実施例に係るハイブリッド車両のクリープトルク制御装置は、データ検出器30、エンジン20、モータ24及び制御器50を含む。
車速センサー36は、車両のホイールに装着される。
変速段センサー38は、変速機26が現在締結されている変速段を検出して、これに対する信号を制御器50に伝達する。
制御器50は、データ検出器30から伝達を受けた信号に基づいてクリープトルクを出力するようにモータ24を制御する。制御器50は、車両の速度が設定速度以上であり、現在変速段が3段又は2段から、1段に変速中の場合、変速段及びブレーキ量によってクリープトルクファクターを適用する。
一方、制御器50は、現在変速段が1段又はR段であり、ブレーキ量が設定値以上であれば、車速が0である時のクリープトルクファクターを適用してクリープトルクを出力するようにモータ24を制御する。
図3は、本発明の実施例に係るハイブリッド車両のクリープトルク制御方法を示すフローチャートである。
つまり、加速ペダル位置センサー32及びブレーキペダル位置センサー34は、加速ペダルの位置値及びブレーキペダルの位置値を検出し、車速センサー36は、ハイブリッド車両の速度を検出し、変速段センサー38は、現在変速段を検出する。
S110段階でハイブリッド車両の速度が設定速度以上であれば、制御器50は、変速段センサー38で検出された信号に基づいて、現在変速段が3段又は2段であるか否かを判断する(S120)。
これとは異なり、S120段階で現在変速段が3段又は2段でなければ、制御器50は、現在変速段が1段又はR段であるかを判断する(S130)。
従って、制御器50は、ハイブリッド車両が低速走行中に運転者の制動要求があるか否かを判断するために、ブレーキ量が設定値以上であるか否かを判断する(S140)。
図5に示すように、ハイブリッド車両が低速走行中に制動をすれば、従来の設定されたマップによるクリープトルク低減ロジックが作動して、クリープトルクが急激に低減した後、クリープトルクが再び上昇する。この時、運転者は、クリープトルクの変動によって不快感を感じ得る。
設定されたクリープトルクファクターは、ハイブリッド車両の速度が0である時のクリープトルクファクターに設定される。
図7に示すように、車速が0である時のクリープトルクファクターが適用されれば、クリープトルクが急激に減少せず、車速減少によるクリープトルク変動が発生しない。従って、運転者は、クリープトルク変動による運転異和感又は不快感を感じることがなく、車両を制動することができる。
ハイブリッド車両が変速前にクリープトルクを発生させれば、バッテリー放電による車両の燃費が悪化し得る。従って、制御器50は、変速前はクリープトルクが上昇しないようにクリープトルクを0以下に制御するクリープトルクファクターを適用する。
前記変速段及びブレーキ量によるクリープトルクファクターは、実変速区間でクリープトルクを0以下に出力し、実変速区間以後に一定のクリープトルクを出力するように設定される。
図4に示すように、ハイブリッド車両が停止前の変速をする前にクリープトルクが上昇して0トルクを超えれば、ハイブリッド車両の燃費が悪化し得る。また、実変速区間ではトルク変動が発生するため、変速感が悪化し得る。
12 ECU
14 MCU
16 TCU
20 エンジン
22 エンジンクラッチ
24 モータ
26 変速機
28 バッテリー
Claims (14)
- クリープトルク制御のためのハイブリッド車両のデータを検出する段階と、
前記データに基づいてハイブリッド車両の車速が設定速度以上であり、ハイブリッド車両の現在変速段が3段又は2段であれば、現在変速段から1段に変速中であるか否かを判断する段階と、
前記ハイブリッド車両が変速段3段又は2段から1段に変速中であれば、変速段及びブレーキ量によるクリープトルクファクターを適用する段階と、
前記クリープトルクファクターを適用したクリープトルクを出力するようにモータを制御する段階と、
を含むことを特徴とするハイブリッド車両のクリープトルク制御方法。 - 前記ハイブリッド車両の現在変速段が1段又はR段であれば、ブレーキ量が設定値以上であるか否かを判断する段階と、
前記ブレーキ量が設定値以上であれば、設定されたクリープトルクファクターを適用する段階と、
を更に含むことを特徴とする請求項1に記載のハイブリッド車両のクリープトルク制御方法。 - 前記設定されたクリープトルクファクターは、車速が0である場合のクリープトルクファクターに設定されることを特徴とする請求項2に記載のハイブリッド車両のクリープトルク制御方法。
- 前記ハイブリッド車両の現在変速段が3段又は2段であり、変速中でなければ、クリープトルクを0以下に出力するようにモータを制御することを特徴とする請求項1に記載のハイブリッド車両のクリープトルク制御方法。
- 前記変速段及びブレーキ量によるクリープトルクファクターは、実変速区間でクリープトルクを0以下に出力するように設定されることを特徴とする請求項1に記載のハイブリッド車両のクリープトルク制御方法。
- 前記変速段及びブレーキ量によるクリープトルクファクターは、実変速区間以後にクリープトルクが増加するように設定されることを特徴とする請求項5に記載のハイブリッド車両のクリープトルク制御方法。
- 前記データは、加速ペダルの位置、ブレーキペダルの位置、車両の速度及び車両の変速段の少なくともいずれか一つに関する情報を含むことを特徴とする請求項1に記載のハイブリッド車両のクリープトルク制御方法。
- ハイブリッド車両のクリープトルクを制御するためのデータを検出するデータ検出器と、
クリープトルクを出力するモータと、
前記モータと連結して変速段を調節する変速機と、
前記データ検出器から伝達を受けた信号に基づいて車両の速度が設定速度以上であり、現在変速段が3段又は2段から、1段に変速中の場合、変速段及びブレーキ量によってクリープトルクファクターを適用してクリープトルクを出力するようにモータを制御する制御器と、
を含むことを特徴とするハイブリッド車両のクリープトルク制御装置。 - 前記制御器は、ハイブリッド車両の現在変速段が3段又は2段であり、変速中でなければ、クリープトルクを0以下に出力するようにモータを制御することを特徴とする請求項8に記載のハイブリッド車両のクリープトルク制御装置。
- 前記制御器は、現在変速段が3段又は2段から、1段に変速中の場合、実変速区間でクリープトルクを0以下に出力するようにモータを制御することを特徴とする請求項8に記載のハイブリッド車両のクリープトルク制御装置。
- 前記制御器は、現在変速段が3段又は2段から、1段に変速中の場合、実変速区間以後にクリープトルクファクターを変速段1段で出力されるクリープトルクまで増加させることを特徴とする請求項10に記載のハイブリッド車両のクリープトルク制御装置。
- 前記制御器は、現在変速段が1段又はR段であり、ブレーキ量が設定値以上であれば、設定されたクリープトルクファクターを適用してクリープトルクを出力するようにモータを制御することを特徴とする請求項8に記載のハイブリッド車両のクリープトルク制御装置。
- 前記設定されたクリープトルクファクターは、車速が0である場合のクリープトルクファクターに設定されることを特徴とする請求項12に記載のハイブリッド車両のクリープトルク制御装置。
- 前記データ検出器は、加速ペダル位置センサー、ブレーキペダル位置センサー、車速センサー及び変速段センサーを含むことを特徴とする請求項8に記載のハイブリッド車両のクリープトルク制御装置。
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- 2015-06-30 US US14/755,139 patent/US9315186B1/en active Active
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Also Published As
Publication number | Publication date |
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KR101610120B1 (ko) | 2016-04-08 |
CN105460004A (zh) | 2016-04-06 |
US9315186B1 (en) | 2016-04-19 |
CN105460004B (zh) | 2020-05-01 |
US20160090073A1 (en) | 2016-03-31 |
EP3002150A1 (en) | 2016-04-06 |
KR20160038484A (ko) | 2016-04-07 |
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