JP6421791B2 - 車両の駆動制御装置 - Google Patents
車両の駆動制御装置 Download PDFInfo
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- JP6421791B2 JP6421791B2 JP2016140908A JP2016140908A JP6421791B2 JP 6421791 B2 JP6421791 B2 JP 6421791B2 JP 2016140908 A JP2016140908 A JP 2016140908A JP 2016140908 A JP2016140908 A JP 2016140908A JP 6421791 B2 JP6421791 B2 JP 6421791B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60K6/445—Differential gearing distribution type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- Y10S903/904—Component specially adapted for hev
- Y10S903/906—Motor or generator
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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
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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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
- Y10S903/904—Component specially adapted for hev
- Y10S903/912—Drive line clutch
- Y10S903/913—One way
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
- Y10S903/93—Conjoint control of different elements
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- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Description
図1は、実施形態における車両を示すスケルトン図である。車両Veは、動力源としてエンジン1と、第1モータMG1と、第2モータMG2とを備えている。エンジン1は、周知の内燃機関により構成されている。各モータMG1,MG2は、モータ機能と発電機能とを有する周知のモータ・ジェネレータ(電動機)であって、インバータを介してバッテリ(いずれも図示せず)に電気的に接続されている。
図2(a)は、Hiギヤロック状態を示す共線図である。図2(a)の共線図には、複合遊星歯車機構の回転要素における回転数および回転方向を示す。なお、図2(a)に示す「ENG」はエンジン1、「OUT」は出力部材を表す。また、ENG軸の上向き矢印はエンジントルク、OUT/MG2軸の上向き矢印は駆動トルクを表す。なお、駆動トルクとは、車両Veの動力源から出力された動力が駆動輪2に伝達されたことによって駆動輪2で発生するトルクである。
図3は、SOWC30を説明するための図である。なお、SOWC30の内部構造を説明するために、図3ではポケットプレート31の一部とノッチプレート32の一部とが断面図として示されている。また、図3にはSOWC30の中心軸線Oを一点鎖線で記載する。
図4は、駆動制御装置の構成を説明するための機能ブロック図である。図4に示すように、駆動制御装置100は、電子制御装置(HV−ECU)101を主体に構成されており、その電子制御装置101により制御されるソレノイド駆動回路(以下単に「駆動回路」という)102を含む。
第1制御部113aは、第1モータMG1による第2リングギヤR2の回転数制御を行い、第2リングギヤR2を負回転数領域に維持させる。そのため、第1退避走行モード中、SOWC30の負回転数制御を実施している第1モータMG1において電力を消費する。また、第1退避走行モードには、エンジン1を停止して第2モータMG2を動力源として走行するEV走行モードと、エンジン1を動力源として走行するエンジン走行モードとが含まれる。EV走行モード中、電子制御装置101によってエンジン1のフューエルカット制御(F/C制御)が実施されているので、エンジン1への燃料噴射および点火は中止される。そのため、EV走行モードによる第1退避走行モード中、第1モータMG1での電力消費に加え、動力源として駆動中の第2モータMG2で電力を消費する。一方、エンジン走行モードによる第1退避走行モードでは、エンジン1のみが動力源して機能するので、上述したEV走行モードに比べて電力消費が減り、バッテリの充電状態(SOC)が低下することを抑制できる。
第2制御部113bは、第2故障発生時、ストロークセンサ71から入力された信号とは無関係にSOWC30を非係合状態として車両Veを走行させる。第2退避走行モードはエンジン1を駆動してエンジントルクで走行するHV走行モードである。この場合、エンジン1から出力された動力を用いて駆動輪2を駆動するとともに、エンジン1から第1遊星歯車機構10を介して第1モータMG1側に分割された動力によって第1モータMG1で発電を行うことが可能になる。そのため、第2退避走行モードでは第1退避走行モードとは異なり、第1モータMG1によって発電した電力をバッテリに充電することが可能になる。
図6は、異常原因の切り分け方法を示すフローチャートである。図6に示す制御フローは車両Veが通常走行中に電子制御装置101によって実施される。
ここで、図7,図8を参照して、SOWC30の異常を検出した場合に異常部位を特定する方法について説明する。
また、上述した実施形態の変形例として、第2遊星歯車機構20はシングルピニオン型であってもよい。シングルピニオン型の第2遊星歯車機構20では、第2サンギヤS2が第1サンギヤS1と一体回転するように連結され、第2キャリアC2がSOWC30に連結された反力要素となり、第2リングギヤR2が第1キャリアC1と一体回転するように連結されている。
さらに別の変形例として、SOWC30がMG1ロック機構として機能するように構成されてもよい。なお、この変形例2の説明では、上述した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。
図11(a)は、変形例2における第1退避走行モード中の運転状態を示す共線図である。また、図11(a)にはエンジン走行モードの場合が示されている。さらに、図11(a)に示すMG1軸の下向き矢印はMG1トルク、ENG軸の上向き矢印はエンジントルク、OUT/MG2軸の上向き矢印は駆動トルクを表す。図11(a)に示すように、変形例2における第1退避走行モードでは、反力要素である第1サンギヤS1を負回転領域に維持するために第1モータMG1は負回転し、かつ負方向のMG1トルクを出力する。これにより、図11(a)に破線で示すように、第1サンギヤS1の回転数が零(SOWC回転数NSOが0rpm)よりも正回転側で回転しようとしてSOWC30で係合ショックが発生することを抑制できる。なお、変形例2でも上述した実施形態と同様に、第1退避走行モードにおいてエンジン走行モードとEV走行モードとを切り替えることが可能である。
図11(b)は、変形例2における第2退避走行モード中の運転状態を示す共線図である。また、図11(b)に示すMG1軸の下向き矢印はMG1トルク、ENG軸の上向き矢印はエンジントルク、OUT/MG2軸の上向き矢印は駆動トルクを表す。図11(b)に示すように、変形例2における第2退避走行モードでは、SOWC30が非係合状態であるので第1サンギヤS1は正回転領域で回転可能である。つまり、変形例2においても、第2退避走行モードではエンジン走行中にSOWC30を非係合状態にすることによって、通常走行時の無段変速状態と同様に車両Veを制御して走行することができる。
SOWC30がMG1ロック機構として機能する場合でも、上述した図6に示す異常原因の切り分け方法を適用できる。変形例2では、SOWC回転数NSOが第1サンギヤS1の回転数(第1モータMG1の回転数)である。そのため、ステップS4によって負方向のMG1トルクの出力を停止後、ステップS5においてSOWC回転数NSO(第1モータMG1の回転数)が0rpmに維持されているか否かを判定する。また、ステップS11を実施後、ステップS12においてSOWC回転数NSO(第1モータMG1の回転数)が0rpmに維持されているか否かを判定する。例えば、SOWC30が非係合状態である場合には、ステップS11に応じて第1モータMG1から出力された正方向のMG1トルクは、第1遊星歯車機構10を介してエンジン1のクランクシャフトに正方向のトルクとして伝達(付与)される。
10 第1遊星歯車機構
20 第2遊星歯車機構
30 セレクタブルワンウェイクラッチ(SOWC)
31 ポケットプレート(固定プレート)
32 ノッチプレート(回転プレート)
33 セレクタプレート
34 ストラット(係合片)
60 アクチュエータ
61 ソレノイド
62 プランジャ(移動部材)
71 ストロークセンサ
72 回転数センサ
73 車速センサ
100 駆動制御装置
101 電子制御装置(HV−ECU)
102 ソレノイド駆動回路
110 検出部
111 判定部
112 SOWC制御部
113 退避走行制御部
MG1 第1モータ
MG2 第2モータ
Ve 車両
Claims (6)
- エンジンと、
電動機と、
係合片が取り付けられた環状の固定プレート、前記係合片が係合する環状の回転プレート、および前記固定プレートと前記回転プレートとの間に設けられた環状のセレクタプレートを有し、前記セレクタプレートが開状態であることによって前記係合片が前記回転プレートに係合して前記回転プレートの回転方向を一方向に規制する係合状態と、前記セレクタプレートが閉状態であることによって前記係合片は前記回転プレートに係合できず前記回転プレートが両方向に回転可能な非係合状態とを選択的に切り替えるセレクタブルワンウェイクラッチと、
少なくとも三つの回転要素として、前記エンジンに連結された入力要素、駆動輪に向けて動力を伝達する出力要素、および前記回転プレートと一体回転するとともに前記セレクタブルワンウェイクラッチによって選択的に回転不能に固定される反力要素を有し、前記セレクタブルワンウェイクラッチが非係合状態である場合には前記エンジンから出力された動力を前記電動機側と前記駆動輪側とに分割する遊星歯車機構と、
前記セレクタプレートに連結された移動部材を有し、前記セレクタプレートの開状態と閉状態とを切り替えるアクチュエータと、
前記移動部材の位置を検出し、当該位置に対応する信号を出力するセンサと、
を備えている車両の駆動制御装置において、
前記セレクタブルワンウェイクラッチを非係合状態に制御して前記車両が走行している最中に前記セレクタプレートの開状態が検出される異常が発生した場合、実際に前記セレクタプレートが開状態となっている第1故障であるか、実際は前記セレクタプレートが閉状態であるにもかかわらず前記センサが前記セレクタプレートの開状態を示す前記信号を出力している第2故障であるかを判定する判定手段と、
前記第1故障である場合には前記電動機によって前記反力要素の回転方向を前記一方向に維持して前記車両を走行させる第1退避走行モードを実施し、前記第2故障である場合には前記セレクタブルワンウェイクラッチを非係合状態に維持したまま前記エンジンによって前記駆動輪を駆動するとともに前記遊星歯車機構によって前記電動機側に分割された動力を用いて前記電動機で発電を行う第2退避走行モードを実施する退避走行制御手段と
を備えていることを特徴とする車両の駆動制御装置。 - 前記退避走行制御手段は、前記電動機からトルクが出力されない第1状態に前記車両を制御し、
前記判定手段は、
前記第1状態において前記反力要素の回転数が零に維持される場合には、前記第1故障であると判定し、
前記第1状態において前記反力要素の回転数が零に維持されない場合には、前記第2故障であると判定する
ことを特徴とする請求項1に記載の車両の駆動制御装置。 - 前記退避走行制御手段は、前記車両が停車後に前記エンジンを回転させることが可能なトルクを前記電動機から出力させる第2状態に前記車両を制御し、
前記判定手段は、
前記第2状態において前記反力要素の回転数が零に維持される場合には、前記第1故障であると判定し、
前記第2状態において前記反力要素の回転数が零に維持されない場合には、前記第2故障であると判定する
ことを特徴とする請求項1または2に記載の車両の駆動制御装置。 - 前記退避走行制御手段は、
前記異常が発生した場合、まず前記第1退避走行モードを実施し、その後、前記判定手段によって前記第1故障であると判定された場合には前記第1退避走行モードを継続し、前記判定手段によって前記第2故障であると判定された場合には前記第1退避走行モードから前記第2退避走行モードに移行する
ことを特徴とする請求項1から3のいずれか1項に記載の車両の駆動制御装置。 - 前記遊星歯車機構は、
前記電動機に連結された第1サンギヤ、前記エンジンに連結された第1キャリア、および前記駆動輪側へ動力を伝達する出力部材に連結された第1リングギヤを有する第1遊星歯車機構と、
前記第1サンギヤと一体回転する第2サンギヤ、前記第1キャリアと一体回転する第2キャリア、および第2リングギヤを有する第2遊星歯車機構と、を含み、
前記入力要素は、前記第1キャリアであり、
前記出力要素は、前記第1リングギヤであり、
前記反力要素は、前記第2リングギヤである
ことを特徴とする請求項1から4のいずれか1項に記載の車両の駆動制御装置。 - 前記遊星歯車機構は、前記電動機に連結されたサンギヤ、前記エンジンに連結されたキャリア、および前記駆動輪側へ動力を伝達する出力部材に連結されたリングギヤを有し、
前記入力要素は、前記キャリアであり、
前記出力要素は、前記リングギヤであり、
前記反力要素は、前記サンギヤである
ことを特徴とする請求項1から4のいずれか1項に記載の車両の駆動制御装置。
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2016
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Publication number | Publication date |
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CN107618353B (zh) | 2019-12-10 |
US10308241B2 (en) | 2019-06-04 |
US20180015917A1 (en) | 2018-01-18 |
JP2018008668A (ja) | 2018-01-18 |
CN107618353A (zh) | 2018-01-23 |
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