JP4358264B2 - ハイブリッド車両 - Google Patents
ハイブリッド車両 Download PDFInfo
- Publication number
- JP4358264B2 JP4358264B2 JP2007206277A JP2007206277A JP4358264B2 JP 4358264 B2 JP4358264 B2 JP 4358264B2 JP 2007206277 A JP2007206277 A JP 2007206277A JP 2007206277 A JP2007206277 A JP 2007206277A JP 4358264 B2 JP4358264 B2 JP 4358264B2
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- internal combustion
- combustion engine
- detection device
- engine
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Classifications
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
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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
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Description
図1は、車両100のパワートレーンを概念的に示すスケルトン図である。
図2を参照して、路面凹凸検出装置17は、車速検出装置17−1と、車輪速検出装置17−2と、スリップ判定部17−3と、周期演算部17−4とを含む。
図3を参照して、横軸にはエンジン出力が、縦軸には共振周波数(Hz)が示されている。図1の入力軸15のねじり共振周波数は、エンジン出力が変化すると非線形に変化することがわかっている。エンジン低出力時と高出力時とでは共振周波数は大きく異なる。図3の例では、エンジン出力が増大すれば、図1の入力軸15のねじり共振周波数が低くなることが示されている。そして、エンジン出力がP1より大きくなると、入力軸15の共振周波数は、バネ下共振域に入ってしまう。
図5を参照して、時刻t1において、車輪下の路面が窪んだ形状となっており、このとき、図1の車輪4は路面から浮き上がった状態となり車輪が空転する。すると、車輪速Vrが車速Vcに対して閾値V0よりも大きくなり、スリップが検出される。また、このときは車輪側が空転する結果、図1の入力軸15のねじりトルクは小さくなっている。
ところで、ハイブリッド車においては、エンジン1と駆動装置との間には流体継ぎ手などが介在せずに連結されている。したがって、急制動や車両走行時のパーキングロック係合、坂道停止時のパーキングロック解放、あるいは路面の摩擦係数の変化、などにより車輪の回転速度が急激に変化した場合、その変化にエンジン1の回転速度が追従せず、エンジン1と、伝達部材16との相対回転速度が変化する。また、いわゆるエンジンのイナーシャトルクにより伝達部材16に過剰なトルクが加わる可能性がある。
図6は、実施の形態2で実行される急減速時における振動抑制制御のフローチャートである。このフローチャートの処理は、所定のメインルーチンから所定時間経過ごとまたは所定条件発生ごとに呼び出されて実行される。
図7を参照して、通常走行状態における伝達部材16(MG2)の回転速度Nm1が急激に回転速度Nm2に低下すると、エンジン1の回転速度Ne1をさらに低下させるような作用が発生する。しかし、エンジン1は慣性モーメントが大きいので、その回転速度を急激に変化させようとすると、その変化率に応じトルクが生じる。
図8を参照して、時刻t1において、第1モータジェネレータ5(MG1)の回転速度の指令値N1が増加され、実回転速度N2が遅れて追従を開始する。そして、時刻t2において、差分ΔN=N1−N2が所定値以上となったため制御遅れがECU50によって検出される。すると、ECU50は、過大トルクが入力軸15または伝達部材16に発生していると判断し、時刻t3においてエンジン出力をON状態からOFF状態に変化させ、出力を低下させる。
実施の形態1、2では、車輪が路面の凹凸を乗り越えた後にそれに応じて発生する車両状態の変化を検出することで路面の凹凸を検出して、エンジン出力を低下させた。しかし、路面の凹凸がバネ下共振を発生させ得るものであることは、他の方法でも検出することが可能である。たとえば、超音波センサ等の非接触センサによって、路面を調べればよい。
図10に示したハイブリッド車両200は、図1で説明したハイブリッド車両100の構成に加えて、車両前方に取付けられた超音波センサ202をさらに含む。
Claims (7)
- 内燃機関と、
車両の走行に前記内燃機関と併用される回転電機と、
駆動輪に動力を伝達する出力軸と、
前記出力軸に連結される伝達部材と、
前記内燃機関の出力を前記回転電機と前記伝達部材とに分配する動力分配機構と、
路面の凹凸を検出する検出装置と、
前記検出装置の検出結果が前記出力軸に周期的なトルク変動を発生させるものである場合に、前記検出結果に基づいて前記内燃機関の出力を低下させる制御部とを備え、
前記内燃機関から前記動力分配機構を介して前記伝達部材に動力を伝達する伝達機構の共振周波数は、前記内燃機関の出力に応じて変化し、
前記制御部は、前記伝達機構の共振周波数がバネ下共振域から外れるまで前記内燃機関の出力を低下させる、ハイブリッド車両。 - 前記検出装置は、
前記車輪のスリップを判定する判定部を備え、
前記判定部は、前記スリップの生じる時間間隔に基づき路面の凹凸を検出する、請求項1に記載のハイブリッド車両。 - 前記検出装置は、
前記回転電機の回転速度を検出するセンサを備え、
前記回転電機に対する回転速度指令値と前記センサの出力から得た実際の回転速度との差に基づいて路面の凹凸を検出する、請求項1に記載のハイブリッド車両。 - 前記検出装置は、
路面に超音波を照射し、前記路面の凹凸を検出する超音波センサを含む、請求項1に記載のハイブリッド車両。 - 内燃機関と、
車両の走行に前記内燃機関と併用される回転電機と、
駆動輪に動力を伝達する出力軸と、
前記出力軸に連結される伝達部材と、
前記内燃機関の出力を前記回転電機と前記伝達部材とに分配する動力分配機構と、
前記出力軸に発生する周期的なトルク変動を検出する検出装置と、
前記検出装置の検出結果に基づいて前記内燃機関の出力を低下させる制御部とを備え、
前記内燃機関から前記動力分配機構を介して前記伝達部材に動力を伝達する伝達機構の共振周波数は、前記内燃機関の出力に応じて変化し、
前記制御部は、前記伝達機構の共振周波数がバネ下共振域から外れるまで前記内燃機関の出力を低下させる、ハイブリッド車両。 - 前記検出装置は、
前記車輪のスリップを判定する判定部を備え、
前記判定部は、前記スリップの生じた時間間隔に基づき前記出力軸にトルク変動が発生した周期を検出する、請求項5に記載のハイブリッド車両。 - 前記検出装置は、
前記回転電機の回転速度を検出するセンサを備え、
前記回転電機に対する回転速度指令値と前記センサの出力から得た実際の回転速度との差に基づいて前記出力軸にトルク変動が生じていることを検出する、請求項5に記載のハイブリッド車両。
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PCT/JP2008/064377 WO2009020218A1 (ja) | 2007-08-08 | 2008-08-04 | ハイブリッド車両 |
US12/451,765 US8392041B2 (en) | 2007-08-08 | 2008-08-04 | Hybrid vehicle |
CN2008800231583A CN101687501B (zh) | 2007-08-08 | 2008-08-04 | 混合动力车辆 |
DE112008001696.8T DE112008001696B4 (de) | 2007-08-08 | 2008-08-04 | Hybridfahrzeug |
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JP5569411B2 (ja) * | 2011-01-26 | 2014-08-13 | トヨタ自動車株式会社 | 車両用駆動装置の制御装置 |
DE112011104804T5 (de) * | 2011-01-31 | 2013-10-31 | Suzuki Motor Corporation | Hybridfahrzeug |
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KR101684500B1 (ko) * | 2011-12-06 | 2016-12-09 | 현대자동차 주식회사 | 하이브리드 차량의 엔진 제어 방법 |
JP5857781B2 (ja) * | 2012-02-15 | 2016-02-10 | 日産自動車株式会社 | 電動モータを用いた車両の制振制御装置 |
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JP6037639B2 (ja) * | 2012-03-30 | 2016-12-07 | 株式会社デンソー | 駆動力制御装置 |
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JP5951787B2 (ja) * | 2012-10-26 | 2016-07-13 | ルネサスエレクトロニクス株式会社 | モータ制御装置及びモータ駆動装置 |
BR112013022228B1 (pt) * | 2013-02-06 | 2021-07-06 | Toyota Jidosha Kabushiki Kaisha | dispositivo de controle de veículo híbrido |
JP6266280B2 (ja) * | 2013-09-18 | 2018-01-24 | Ntn株式会社 | 電気自動車のスリップ制御装置 |
JP6248530B2 (ja) * | 2013-10-11 | 2017-12-20 | 日産自動車株式会社 | 電動車両の変速制御装置 |
DE102014108865A1 (de) | 2014-06-25 | 2015-12-31 | Valeo Schalter Und Sensoren Gmbh | Verfahren zum Betreiben eines Kraftfahrzeugs und Kraftfahrzeug |
JP6252441B2 (ja) * | 2014-11-17 | 2017-12-27 | トヨタ自動車株式会社 | 車両の駆動装置 |
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JP6489509B2 (ja) * | 2017-02-23 | 2019-03-27 | マツダ株式会社 | ハイブリッド車両の動力制御方法及び動力制御装置 |
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US20100185351A1 (en) | 2010-07-22 |
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