JP6444488B2 - ハイブリッド車両の制御装置 - Google Patents
ハイブリッド車両の制御装置 Download PDFInfo
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- JP6444488B2 JP6444488B2 JP2017503391A JP2017503391A JP6444488B2 JP 6444488 B2 JP6444488 B2 JP 6444488B2 JP 2017503391 A JP2017503391 A JP 2017503391A JP 2017503391 A JP2017503391 A JP 2017503391A JP 6444488 B2 JP6444488 B2 JP 6444488B2
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- brake
- mode
- clutch
- correction amount
- inertia
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- B60K6/00—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
- 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
- B60K6/42—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 characterised by the architecture of the hybrid electric vehicle
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- B60K6/00—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16H—GEARING
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- F16H59/54—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the brakes, e.g. parking brakes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Transmission Device (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Transmissions By Endless Flexible Members (AREA)
Description
図1は、実施例1の制御装置が適用されたFFハイブリッド車両の全体システムを示す。以下、図1に基づいて、FFハイブリッド車両の全体システム構成を説明する。
図2は、実施例1のCVTコントロールユニット84にて実行されるブレーキ減速時のプーリ圧補正制御処理の流れを示す(プーリ圧補正制御手段)。以下、ブレーキ減速時のプーリ圧補正制御処理構成をあらわす図2の各ステップについて説明する。
図4はWSCモード選択時、図5はEVモード選択時、図6はHEVモード選択時、図7はHEVモードからEVモードへモード遷移時を示すタイムチャートである。図8は一定型ブレーキトルク補正パターン・下降型ブレーキトルク補正パターン・凹凸型ブレーキトルク補正パターンの各特性を示す。以下、図2及び図4〜図8に基づき、ブレーキトルク補正パターンを含みブレーキ減速時のプーリ圧補正制御処理作用を説明する。
図9は、モード遷移を伴ってブレーキ操作からブレーキ解放に移行するときのタイムチャートを示す。以下、図9に基づき、ブレーキ減速時を含むプーリ圧補正制御作用を説明する。図9において、時刻t1はプーリ圧補正制御の開始条件成立時刻である。時刻t2はブレーキトルク補正量の低下時刻である。時刻t3はブレーキトルク補正量の上昇時刻である。時刻t4はプーリ圧補正制御の解除条件成立時刻である。時刻t5はブレーキトルク補正量のゼロ低下時刻である。時刻t6はHEVモードからEVモードへのモード遷移時刻である。時刻t7はEVモードからHEVモードへのモード遷移時刻である。
実施例1では、EVモードが選択されているときのブレーキ減速時のブレーキトルク補正量を、HEVモードが選択されているときのブレーキ減速時のブレーキトルク補正量より小さくする構成とした。即ち、イナーシャトルク補正分であるブレーキトルク補正量を決めるときの考慮すべき駆動系の構成要素はEVモードとHEVモードで異なる。つまり、モータジェネレータ4のみを駆動源とするEVモードの場合、横置きエンジン2とモータジェネレータ4を駆動源とするHEVモードに比べてイナーシャトルクが小さい。このため、横置きエンジン2とベルト式無段変速機6が非直結であるEVモードでのブレーキトルク補正量を、HEVモードでのブレーキトルク補正量から切り分け、EVモードでのイナーシャトルクに合わせ、HEVモードの選択時より小さいブレーキトルク補正量に設定する。この結果、EVモードでのブレーキ減速時、ベルト式無段変速機6でのベルトノイズの悪化が抑制される。この効果については、EVモード(周波数2.5kHz)のとき、HEVイナーシャ量によるセカンダリプーリ圧を与えた比較例と、EVイナーシャ量によるセカンダリプーリ圧を与えた実施例1との比較による確認試験を行った。この確認試験の結果、図10に示すように、比較例での音響パワーがC点であったのに対し、実施例1での音響パワーはD点まで低下したものとなり、ベルトノイズの低減目標値をクリアするという結果が得られ、ベルトノイズの悪化抑制効果の高さが確認された。EVモードでは、エンジンが停止状態になるため、HEVモードでエンジンが駆動している状態に比べ、ベルトノイズが運転者に与える影響が大きくなるが、EVモードでのベルトノイズが低減されることで、エンジンが停止していても運転者へ与えるベルトノイズの影響を低減することができる。なお、ノイズ発生の明確なメカニズム解析はなされていないが、ベルト6cのエレメントがセカンダリプーリ6bのシーブ面に噛み込まれるときに音が発生し、そのときの噛み込み力(プーリ推力)が大きいほど音が大きくなるという現象は確認されている。
Claims (6)
- 駆動系に、エンジンと、モータと、ベルト式無段変速機と、前記エンジンと前記モータとを断接可能な第1クラッチと、前記モータと前記ベルト式無段変速機とを断接可能な第2クラッチと、を備え、
前記ベルト式無段変速機は、プライマリプーリとセカンダリプーリにベルトを掛け渡し、プライマリプーリ圧とセカンダリプーリ圧で前記ベルトをクランプするよう構成され、
駆動モードとして、前記エンジンと前記モータを駆動源とし、前記第1クラッチを締結又はスリップ状態かつ前記第2クラッチを締結状態とするHEVモードと、前記モータのみを駆動源とし、前記第1クラッチを開放状態かつ前記第2クラッチを締結状態とするEVモードと、を有するハイブリッド車両の制御装置において、
ブレーキ減速時、前記ベルト式無段変速機への入力トルク分と、イナーシャトルク補正分であるブレーキトルク補正量とに基づいて、前記プライマリプーリ圧と前記セカンダリプーリ圧を決めるプーリ圧補正制御手段を設け、
前記プーリ圧補正制御手段は、前記EVモードが選択されているときのブレーキ減速時のブレーキトルク補正量を、前記HEVモードが選択されているときのブレーキ減速時のブレーキトルク補正量より小さくするハイブリッド車両の制御装置。 - 請求項1に記載されたハイブリッド車両の制御装置において、
前記プーリ圧補正制御手段は、前記EVモードが選択されているときのブレーキ減速時のブレーキトルク補正量を、前記モータと前記第2クラッチと前記プライマリプーリを合わせたイナーシャトルクに基づくEVイナーシャ量とし、
前記HEVモードが選択されているときのブレーキ減速時のブレーキトルク補正量を、前記EVモードの構成要素に前記エンジンと前記第1クラッチを加えたイナーシャトルクに基づくHEVイナーシャ量とするハイブリッド車両の制御装置。 - 請求項2に記載されたハイブリッド車両の制御装置において、
駆動モードとして、前記HEVモードと前記EVモード以外に、前記第1クラッチを締結し前記第2クラッチをスリップ締結するWSCモードを加え、
前記プーリ圧補正制御手段は、前記WSCモードが選択されているときのブレーキ減速時のブレーキトルク補正量を、前記EVモードでのブレーキ減速時のブレーキトルク補正量より小さくするハイブリッド車両の制御装置。 - 請求項3に記載されたハイブリッド車両の制御装置において、
前記プーリ圧補正制御手段は、前記WSCモードが選択されているときのブレーキ減速時のブレーキトルク補正量を、前記第2クラッチと前記プライマリプーリを合わせたイナーシャトルクに基づくWSCイナーシャ量とするハイブリッド車両の制御装置。 - 請求項1から4までの何れか一項に記載されたハイブリッド車両の制御装置において、
制動系に、ブレーキ操作時、ブレーキ液圧コントロールにより制動輪の制動ロックを抑えるアンチロックブレーキ制御手段を設け、
前記プーリ圧補正制御手段は、ブレーキ減速中にアンチロックブレーキ制御が作動するABS作動時のブレーキトルク補正量を、駆動モードにかかわらずHEVイナーシャ量とするハイブリッド車両の制御装置。 - 請求項1から5までの何れか一項に記載されたハイブリッド車両の制御装置において、
前記プーリ圧補正制御手段は、プーリ圧補正制御の解除条件が成立すると、解除条件成立から規定時間だけブレーキトルク補正量を維持した後、ブレーキトルク補正量を下げるハイブリッド車両の制御装置。
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