JP2020152250A - ハイブリッド車両およびハイブリッド車両の制御方法 - Google Patents
ハイブリッド車両およびハイブリッド車両の制御方法 Download PDFInfo
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- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
Description
図1は、ハイブリッド車両(以下、単に車両と記載する)10の駆動システムの構成の一例を示す図である。図1に示すように車両10は、制御部11と、走行用の動力源となる、エンジン13と、第1モータジェネレータ(以下、第1MGと記載する)14と、第2モータジェネレータ(以下、第2MGと記載する)15とを駆動システムとして備えている。エンジン13は、過給機の一例であるターボチャージャ47を含む。第1MG14および第2MG15は、いずれも駆動電力が供給されることによりトルクを出力するモータとしての機能と、トルクが与えられることにより発電電力を発生する発電機としての機能とを備える。第1MG14および第2MG15としては、交流回転電機が用いられる。交流回転電機は、たとえば、永久磁石が埋設されたロータを備える永久磁石型同期電動機を含む。
図2は、ターボチャージャ47を有するエンジン13の構成の一例を示す図である。エンジン13は、たとえば、直列4気筒型の火花点火型の内燃機関である。図2に示すようにエンジン13は、たとえば、4つの気筒40a,40b,40c,40dが一方向に並べられて形成されるエンジン本体40を含む。
図3は、制御部11の構成の一例を示すブロック図である。図3に示すように、制御部11は、HV(Hybrid Vehicle)−ECU(Electronic Control Unit)62と、MG−ECU63と、エンジンECU64とを備える。
以上のような構成を有する車両10は、エンジン13および第2MG15を動力源としたハイブリッド(HV)走行モードやエンジン13を停止状態にするとともに第2MG15をバッテリ18に蓄積した電力で駆動して走行する電気(EV)走行モードなどの走行モードに設定または切り替えが可能である。各モードの設定や切り替えは、HV−ECU62により実行される。HV−ECU62は、設定または切り替えられた走行モードに基づいてエンジン13、第1MG14および第2MG15を制御する。
図6は、第1MG14のトルク指令値の設定方法を説明するためのブロック線図である。HV−ECU62は、図6に示すように、第1MG14のトルク制御におけるフィードフォワード項Tgff(上述の第1トルクに相当)とフィードバック項Tgfb(上述の第2トルクに相当)との和を第1MG14のトルク指令値として設定する。
HV−ECU62は、要求エンジンパワーを目標エンジン回転速度で除算して算出されるエンジントルクに対して、一定の無駄時間と1次遅れの時定数とよって表現される応答遅れを考慮することによって推定エンジントルクを算出する。
以下、図8を参照して、HV−ECU62で実行される第1MGトルク指令の出力処理について説明する。図8は、HV−ECU62で実行される第1MGトルク指令の出力処理の一例を示すフローチャートである。
以上のような構造およびフローチャートに基づく本実施の形態に係るHV−ECU62の動作について図9を参照しつつ説明する。図9は、HV−ECU62の動作の一例を説明するための図である。図9の縦軸は、エンジントルクを示す。図9の横軸は、時間を示す。図9のLN4は、推定エンジントルクの変化を示す。なお、要求エンジンパワーは、説明の便宜上、図7のLN1に示す要求エンジンパワーの変化と同様に、時間t(0)の時点で所定量だけステップ的に増加し、Pe(0)となり、その後、一定の状態が継続する場合を想定する。
以上のようにして、本実施の形態に係るハイブリッド車両によると、過給域である場合の時定数が非過給域である場合の時定数よりも大きくなるように設定されるため、過給域と非過給域との各々において適切な時定数を設定することができる。そのため、過給域と非過給域との各々においてエンジントルクを精度高く推定することができる。これにより、第1MG14のトルク制御の精度を向上させることができる。したがって、過給機の過給状態に応じてエンジントルクを精度高く推定するハイブリッド車両およびハイブリッド車両の制御方法を提供することができる。
以下、変形例について記載する。
今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。
Claims (4)
- 過給機を有するエンジンと、
前記エンジンの動力を用いて発電可能なモータジェネレータと、
前記エンジンから出力される動力を前記モータジェネレータに伝達される動力と駆動輪に伝達される動力とに分割する動力分割装置と、
前記エンジンの出力指令に対する応答性を考慮して推定されたエンジントルクを用いて、前記エンジンの回転速度を目標値にするための前記モータジェネレータのトルク制御を実行する制御装置とを備え、
前記制御装置は、前記応答性を決定する時定数を前記過給機による過給域と非過給域とで変更する、ハイブリッド車両。 - 前記制御装置は、前記過給域である場合の値が前記非過給域である場合の値よりも大きくなるように前記時定数を変更する、請求項1に記載のハイブリッド車両。
- 前記ハイブリッド車両は、大気圧を検出する検出装置をさらに備え、
前記制御装置は、
前記エンジントルクがしきい値を超えると前記過給域であると判定し、
前記エンジントルクが前記しきい値よりも低いと前記非過給域であると判定し、
前記大気圧が低い場合の値が前記大気圧が高い場合の値よりも小さくなるように前記しきい値を設定する、請求項1または2に記載のハイブリッド車両。 - 過給機を有するエンジンと、前記エンジンの動力を用いて発電可能なモータジェネレータと、前記エンジンから出力される動力を前記モータジェネレータに伝達される動力と駆動輪に伝達される動力とに分割する動力分割装置とを備えるハイブリッド車両の制御方法であって、
前記エンジンの出力指令に対する応答性を考慮して推定されたエンジントルクを用いて、前記エンジンの回転速度を目標値にするための前記モータジェネレータのトルク制御を実行するステップと、
前記応答性を決定する時定数を前記過給機による過給域と非過給域とで変更するステップとを含む、ハイブリッド車両の制御方法。
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JP2019053049A JP7163838B2 (ja) | 2019-03-20 | 2019-03-20 | ハイブリッド車両およびハイブリッド車両の制御方法 |
US16/809,672 US20200298854A1 (en) | 2019-03-20 | 2020-03-05 | Hybrid vehicle and method for controlling hybrid vehicle |
CN202010194986.6A CN111720221B (zh) | 2019-03-20 | 2020-03-19 | 混合动力车辆和控制混合动力车辆的方法 |
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JP2009137350A (ja) * | 2007-12-04 | 2009-06-25 | Toyota Motor Corp | 車両の動力出力装置およびその制御方法 |
WO2013098943A1 (ja) * | 2011-12-27 | 2013-07-04 | トヨタ自動車株式会社 | ハイブリッド自動車 |
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WO2013128649A1 (ja) * | 2012-03-02 | 2013-09-06 | トヨタ自動車株式会社 | 車両用駆動装置の制御装置 |
AU2014241859B2 (en) * | 2013-03-14 | 2016-04-21 | Allison Transmission, Inc. | System and method for compensation of turbo lag in hybrid vehicles |
US9126591B2 (en) * | 2013-10-18 | 2015-09-08 | Ford Global Technologies, Llc | Hybrid vehicle powertrain management system and method |
US9340199B1 (en) * | 2014-12-10 | 2016-05-17 | Ford Global Technologies, Llc | Method of braking in hybrid vehicle |
US9796372B2 (en) * | 2015-10-28 | 2017-10-24 | GM Global Technology Operations LLC | Powertrain and control method with selective pursuit of optimal torque targets |
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US10378470B2 (en) * | 2017-06-12 | 2019-08-13 | Ford Global Technologies, Llc | Method and system for diagnosing boost pressure control |
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