JP2006291922A - 車両の制御装置 - Google Patents
車両の制御装置 Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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
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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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- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
【解決手段】 筒内に直接燃料噴射する筒内噴射用インジェクタと、吸気通路および/または吸気ポートに燃料噴射する吸気通路噴射用インジェクタとを有する内燃機関を備えたハイブリッド車両では、低車速走行時のような、車両全体での発生音が小さい運転状態での内燃機関運転時(ステップS100のYES判定時)には、高圧の燃料噴射を行なう筒内噴射用インジェクタを用いずに、吸気通路噴射用インジェクタによって全燃料を噴射するように、インジェクタ間の燃料噴射分担比率(DI比率)を設定する(ステップS130)。
【選択図】 図3
Description
燃焼室内に直接噴射される燃料を十分に霧化するために、吸気通路噴射用インジェクタからの燃料噴射圧力よりも高く設定することが必要である。このため、一般的には、内燃機関の回転に伴って駆動される機関駆動式の高圧燃料ポンプを含む燃料昇圧系によって、吸気通路噴射用インジェクタからの噴射燃料を供給する低圧燃料供給系の燃料をさらに昇圧して、筒内噴射用インジェクタからの噴射燃料を供給する構成が用いられている。
低速走行中または車両駆動力としての内燃機関への出力要求が小さい場合(アイドル運転時)には、内燃機関の運転が積極的に車両駆動力を得るためのものではないため、低圧による第1の燃料噴射手段からの燃料噴射によって内燃機関の出力が低下しても、運転性の悪化を招くことはない。
図1は、この発明の実施の形態による車両の制御装置によって制御されるハイブリッド車両500の全体構成を説明する概略ブロック図である。
吸入燃料を全量昇圧して吐出する全量吐出型の高圧ポンプを用いることも可能である(たとえば、特開平7−293381号公報に開示の燃料供給装置を参照)。なお、このようなタイプの高圧ポンプにおいても、昇圧動作時には、回転駆動時のガタ等による振動に起因して作動音が発生する可能性がある。このような構成では、この昇圧ポンプをバイパスして低圧燃料通路190および高圧燃料通路260を連結するバイパス弁を配置して、燃料昇圧系(高圧ポンプ)の動作停止時にはこのバイパス弁の開弁により、低圧燃料ポンプ180からの吐出燃料により各筒内噴射用インジェクタ110からの燃料噴射を行なう構成とすることができる。
上述のように、図1に示したハイブリッドECU590によるエンジン運転要求は、車両駆動力としてのエンジン出力要求がある場合以外にも発生される。
Claims (7)
- 筒内に直接燃料噴射する第1の燃料噴射手段および吸気通路に燃料噴射する第2の燃料噴射手段を有する内燃機関と電動機とを駆動力源として備えた車両の制御装置であって、
前記内燃機関の運転要求時に車両速度が所定速度以下であるかどうかを判定する車速判定手段と、
前記車速判定手段によって前記車両速度が前記所定速度以下と判定されたときに、前記第2の燃料噴射手段から全燃料を噴射するように、前記内燃機関の全燃料噴射量に対する前記第1および第2の燃料噴射手段間での燃料噴射分担を制御する第1の燃料噴射制御手段とを備える、車両の制御装置。 - 筒内に直接燃料噴射する第1の燃料噴射手段および吸気通路に燃料噴射する第2の燃料噴射手段を有する内燃機関と電動機とを駆動力源として備えた車両の制御装置であって、
前記車両は、前記内燃機関の出力により発電された電力により充電可能であり、かつ、前記電動機の電源として使用可能なバッテリをさらに備え、
前記制御装置は、
前記内燃機関の運転要求時に、前記車両の駆動力としての前記内燃機関への要求出力が所定値以下であるかどうかを判定する運転要求判別手段と、
前記運転要求判別手段によって前記車両の駆動力としての前記内燃機関への要求出力が所定値以下と判定されたときに、前記第2の燃料噴射手段から全燃料を噴射するように、前記内燃機関の全燃料噴射量に対する前記第1および第2の燃料噴射手段間での燃料噴射分担を制御する第1の燃料噴射制御手段とを備える、車両の制御装置。 - 前記第1の燃料噴射制御手段は、前記エンジン運転要求が前記バッテリの充電のために発生されたときに、前記第2の燃料噴射手段から全燃料を噴射するように前記燃料噴射分担を設定する、請求項2記載の車両の制御装置。
- 前記第1の燃料噴射手段の温度が所定温度以上であるかどうかを判定する温度判定手段と、
前記温度判定手段によって前記第1の燃料噴射手段の温度が所定温度以上と判定されたときに、前記第1の燃料噴射制御手段に代わって前記燃料噴射分担を設定する第2の燃料噴射制御手段とをさらに備え、
前記第2の燃料噴射制御手段は、前記全燃料噴射量の少なくとも一部を前記第1の燃料噴射手段から噴射するように前記燃料噴射分担を設定する、請求項1または2記載の車両の制御装置。 - 前記車両は、
燃料を蓄積する燃料タンクと、
前記燃料タンクに蓄積された燃料を吸入して、前記第2の燃料噴射手段からの燃料噴射圧力に対応した所定圧力で吐出する第1の燃料ポンプと、
前記第1の燃料ポンプから吐出された燃料を吸入して、前記所定圧力から昇圧して吐出する第2の燃料ポンプとをさらに備え、
前記第2の燃料噴射制御手段に従った前記第1の燃料噴射手段からの燃料噴射は、前記第2の燃料ポンプを停止させた状態で前記所定圧力により実行される、請求項4記載の車両の制御装置。 - 前記第1の燃料噴射手段の温度が所定温度以上であるかどうかを判定する温度判定手段と、
前記温度判定手段によって前記第1の燃料噴射手段の温度が所定温度以上と判定されたときに、前記第1および第2の燃料噴射手段からの燃料噴射を強制的に停止する燃焼停止手段とをさらに備える、請求項1または2記載の車両の制御装置。 - 前記所定温度は、前記第1の燃料噴射手段へのデポジット堆積の危険性を考慮して設定される、請求項4または6記載の車両の制御装置。
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