JP2019167009A - ハイブリッド車両の制御装置 - Google Patents
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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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- F02D13/0261—Controlling the valve overlap
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- F02D41/021—Introducing corrections for particular conditions exterior to the engine
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- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
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- F02N11/00—Starting of engines by means of electric motors
- F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
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- B60W2510/00—Input parameters relating to a particular sub-units
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- B60W2510/00—Input parameters relating to a particular sub-units
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- B60W2710/00—Output or target parameters relating to a particular sub-units
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- B60Y2200/92—Hybrid vehicles
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- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
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- F02D41/006—Controlling exhaust gas recirculation [EGR] using internal EGR
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- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M2026/001—Arrangements; Control features; Details
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- F02N11/0825—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to prevention of engine restart failure, e.g. disabling automatic stop at low battery state
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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Abstract
Description
図1は、第1実施形態におけるハイブリッド車両の概略構成を示す説明図である。ハイブリッド車両(以下単に「車両」という)1はシリーズハイブリッドシステムを搭載した車両である。図1に示すように、車両1は、発電用のエンジン2と、発電機3と、インバータ4と、バッテリ5と、走行用のモータ6と、駆動輪7とを備える。また、車両1は、種々の制御を実施する電子制御装置(ECU)8を備える。
第2実施形態では、車両要求パワーPvを満たすために、過渡運転時よりもエンジン2の運転領域を拡大した出力運転を実施するように構成されている。第2実施形態の電子制御装置8は、車両要求パワーPvが、定点運転時のエンジン出力Pecとバッテリ5の出力可能電力Woutとの和よりも大きい時には、エンジン2の運転領域を拡大するエンジン制御を実施する。なお、第2実施形態の説明では、第1実施形態と同様の構成については説明を省略し、その参照符号を引用する。
第3実施形態では、複数の動作点にてエンジン2の定点運転を実施するように構成されている。なお、第3実施形態の説明では、上述した第1実施形態および第2実施形態と同様の構成については説明を省略し、その参照符号を引用する。
上述した各実施形態の変形例として、電子制御装置8は、バッテリ5の劣化や故障状態を検出し、その検出結果に基づいて、エンジン2の過渡運転を実施するように構成されてもよい。図15は、劣化や故障時のバッテリ使用可能範囲を説明するための説明図である。図15に示すように、劣化や故障時には、通常時に比べて、充電可能電力Winおよび出力可能電力Woutの範囲が縮小する。そのため、電子制御装置8は、バッテリ5の劣化や故障を検出した場合には出力可能電力Woutおよび充電可能電力Winを小さくすることで、定常運転、過渡運転モードの選択を実施、最適な燃焼状態で運転できるようになる。例えば、上述した図5のステップS1では、劣化や故障を検出した場合に、通常時よりも出力可能電力Woutおよび充電可能電力Winを小さく算出することで、よりロバスト性の高い運転状態が実現できる。
2 エンジン
3 発電機
5 バッテリ
6 モータ
8 電子制御装置(ECU)
Claims (6)
- エンジンと、走行用動力源の電動機と、前記電動機に供給するための電力を充電するバッテリとを備えたハイブリッド車両の制御装置であって、
前記エンジンの過渡運転時に、前記バッテリの出力可能電力、及び、充電可能電力の絶対値が小さい場合には、前記エンジンの動作点を定常運転時よりも熱効率の低い位置かつ低出力から高出力の広い範囲で制御するとともに、定常運転時よりも燃焼限界までの余裕代が大きい燃焼状態に前記エンジンを制御する過渡運転を実施する過渡運転制御手段を備える
ことを特徴とするハイブリッド車両の制御装置。 - 前記ハイブリッド車両は、シリーズハイブリッド車両であり、
前記定常運転時に、前記エンジンの動作点を熱効率が良い動作点に固定した定点運転を実施する定点運転制御手段と、
車両要求パワーが、所定値以上である場合には、前記エンジンの動作点を過渡運転時よりも高出力側の位置に制御するとともに、過渡運転時よりも燃焼限界までの余裕代が大きい燃焼状態に前記エンジンを制御する出力運転を実施する出力運転制御手段と、をさらに備える
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制御装置。 - 前記定点運転制御手段は、
前記エンジンの熱効率が最良となる第1動作点にて定点運転を実施する第1定点運転を実施する第1定点運転制御手段と、
前記第1動作点よりも熱効率の低い位置かつ高出力側の第2動作点にて定点運転を実施する第2定点運転を実施する第2定点運転制御手段と、を有し、
前記第1定点運転制御手段は、車両要求パワーが、定点運転状態でのエンジン出力と前記バッテリの出力可能電力との和よりも小さい場合に、前記第1定点運転を実施し、
前記車両要求パワーが、定点運転状態でのエンジン出力と前記バッテリの出力可能電力との和以上である場合、前記第2定点運転を実施する
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制御装置。 - 前記エンジンは、リーンバーン運転を実施可能に構成されており、
前記過渡運転制御手段は、過渡運転時の空燃比を、定常運転時に安定した燃焼が得られる空燃比の範囲におけるリーン側の限界値よりもリッチ側の空燃比に制御する
ことを特徴とする請求項1から3のうちのいずれか一項に記載のハイブリッド車両の制御装置。 - 前記エンジンは、排気の一部をEGRガスとして排気通路からEGR弁を通じて吸気通路に戻すように構成された排気ガス再循環装置を備え、
前記過渡運転制御手段は、過渡運転時のEGR率を、定常運転時に安定した燃焼が得られるEGR率の範囲におけるEGRガス多量側の限界値よりもEGRガス少量側のEGR率に制御する
ことを特徴とする請求項1から3のうちのいずれか一項に記載のハイブリッド車両の制御装置。 - 前記エンジンは、吸気弁と排気弁とのバルブオーバーラップ量を変更可能な可変バルブタイミング機構を備え、
前記過渡運転制御手段は、過渡運転時のバルブオーバーラップ量を、定常運転時に安定した燃焼が得られるバルブオーバーラップ量の範囲におけるラップ量が大きい側の限界値よりもラップ量が小さい側のバルブオーバーラップ量に制御する
ことを特徴とする請求項1から3のうちのいずれか一項に記載のハイブリッド車両の制御装置。
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