JP2021031005A - 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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- JP2021031005A JP2021031005A JP2019156340A JP2019156340A JP2021031005A JP 2021031005 A JP2021031005 A JP 2021031005A JP 2019156340 A JP2019156340 A JP 2019156340A JP 2019156340 A JP2019156340 A JP 2019156340A JP 2021031005 A JP2021031005 A JP 2021031005A
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- engine
- start time
- clutch
- time
- hybrid vehicle
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- 230000006870 function Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
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- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
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- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
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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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/02—Clutches
- B60W2710/027—Clutch torque
-
- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
-
- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/083—Torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/18—Propelling the vehicle
- B60Y2300/192—Power-up or power-down of the driveline, e.g. start up of a cold engine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/49—Engine push start or restart by use of vehicle kinetic energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/60—Control of electric machines, e.g. problems related to electric motors or generators
- B60Y2300/64—Drag run or drag torque compensation, e.g. motor to drive engine with drag torque or engine speed is brought to start speed before injection and firing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2300/00—Control related aspects of engine starting
- F02N2300/20—Control related aspects of engine starting characterised by the control method
- F02N2300/2006—Control related aspects of engine starting characterised by the control method using prediction of future conditions
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
エンジンの始動時間は、第1走行モードから第2走行モードへの切り替え前のエンジンの停止時におけるクランク位置(以下では適宜「停止クランク位置」と呼ぶ。)に応じて大きく変わる。これは、停止クランク位置に応じて、エンジンの始動に必要なトルク(損失トルク)が変わるからである。したがって、本発明では、予測始動時間算出手段は、そのような停止クランク位置による始動時間の変化を考慮して、予測始動時間を求める。これにより、停止クランク位置の影響が加味された予測始動時間を適切に求めることができる。よって、予測始動時間を精度良く求めることができる。
このように構成された本発明によれば、ドライバからの加速要求時に、エンジンの速やかな始動を適切に優先させることができる。つまり、エンジンを速やかに始動させて、ドライバからの加速要求を適切に実現することができる。
このように構成された本発明によれば、クラッチ締結圧を効果的に最適化することができる。
このように構成された本発明では、予測始動時間算出手段及び実始動時間取得手段は、それぞれ、エンジン回転数が所定回転数に達したタイミングをエンジンの始動が終了したタイミングとして用いて、予測始動時間の算出及び実始動時間の取得を行う。これにより、予測始動時間及び実始動時間の精度を適切に確保することができる。
図1は、本発明の実施形態によるハイブリッド車両の制御装置が適用されたハイブリッド車両の概略構成図である。
以下では、本発明の実施形態において、コントローラ20が行う制御内容について説明する。本実施形態では、コントローラ20は、ハイブリッド車両1の走行モードを第1走行モードから第2走行モードへと切り替えるためにエンジン2を始動させるときに、第1クラッチCL1に対して所定の締結圧(クラッチ締結圧)を付与する制御を行って、第1クラッチCL1を解放状態から締結状態へと移行させる。特に、本実施形態では、コントローラ20は、第1クラッチCL1に対して最適なクラッチ締結圧を付与すべく、クラッチ締結圧を学習により補正していく。
次に、図11を参照して、本発明の実施形態によるエンジン始動制御(上述したクラッチ締結圧の制御も含む)において行われる具体的な処理について説明する。図11は、本発明の実施形態によるエンジン始動制御処理を示すフローチャートである。このエンジン始動制御処理は、コントローラ20によって所定の周期で繰り返し実行される。
次に、本発明の実施形態によるハイブリッド車の制御装置の作用及び効果について説明する。
2 エンジン
4 モータ
6 変速機
12 駆動輪
20 コントローラ
20a 走行モード判定部
20b エンジン始動制御部
20c 予測始動時間算出部
20d 実始動時間取得部
20e 締結圧補正部
CL1 第1クラッチ
CL2 第2クラッチ
Claims (5)
- エンジンと、モータと、前記エンジンと前記モータとの間におけるトルクの伝達と遮断とを切り替えるクラッチと、を有するハイブリッド車両の制御装置であって、
前記クラッチを解放状態に設定して、前記エンジンのトルクを用いずに前記モータのトルクを用いて前記ハイブリッド車両を走行させる第1走行モードから、前記クラッチを締結状態に設定して、少なくとも前記エンジンのトルクを用いて前記ハイブリッド車両を走行させる第2走行モードへと、前記ハイブリッド車両の走行モードを切り替えるか否かを判定する走行モード判定手段と、
前記走行モード判定手段により前記ハイブリッド車両の走行モードを前記第1走行モードから前記第2走行モードへと切り替えると判定されたときに、前記エンジンを始動させるべく、前記クラッチを解放状態から締結状態へと移行させるように当該クラッチに対して締結圧を付与すると共に、前記モータによって前記エンジンをクランキングするエンジン始動制御手段と、
前記エンジン始動制御手段により前記エンジンの始動が開始されてから前記エンジンの始動が終了するまでの予測始動時間を求める予測始動時間算出手段と、
前記エンジン始動制御手段により前記エンジンの始動が開始されてから前記エンジンの始動が終了するまでの実際の始動時間である実始動時間を取得する実始動時間取得手段と、
前記実始動時間取得手段により取得された前記実始動時間が前記予測始動時間算出手段により求められた前記予測始動時間よりも短い場合に、前記エンジン始動制御手段により前記エンジンを次回始動させるときに前記クラッチに対して付与する前記締結圧を減少させる補正を行う締結圧補正手段と、
を有する、ことを特徴とするハイブリッド車両の制御装置。 - 前記予測始動時間算出手段は、前記エンジン始動制御手段により前記エンジンが始動される前の当該エンジンの停止時におけるクランク位置に基づき、前記予測始動時間を求める、請求項1に記載のハイブリッド車両の制御装置。
- 前記エンジン始動制御手段は、前記走行モード判定手段により前記ハイブリッド車両の走行モードを前記第1走行モードから前記第2走行モードへと切り替えると判定されたときにおいて、ドライバから前記ハイブリッド車両を加速させる要求がある場合には、当該要求がない場合よりも、前記エンジンの始動時間を短縮すべく、前記クラッチに対して付与する締結圧を大きくする、請求項1又は2に記載のハイブリッド車両の制御装置。
- 前記締結圧補正手段は、前記実始動時間と前記予測始動時間との差の絶対値が大きいほど、前記補正により前記締結圧を減少させる量を大きくする、請求項1乃至3のいずれか一項に記載のハイブリッド車両の制御装置。
- 前記予測始動時間算出手段及び前記実始動時間取得手段は、それぞれ、前記エンジンの回転数が所定回転数に達したときに前記エンジンの始動が終了したものと判断して、前記予測始動時間の算出及び前記実始動時間の取得を行う、請求項1乃至4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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US16/933,552 US11518365B2 (en) | 2019-08-29 | 2020-07-20 | Hybrid vehicle control system |
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