JP6761129B2 - 自動変速機のインターロック判定装置および判定方法 - Google Patents
自動変速機のインターロック判定装置および判定方法 Download PDFInfo
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- JP6761129B2 JP6761129B2 JP2019535057A JP2019535057A JP6761129B2 JP 6761129 B2 JP6761129 B2 JP 6761129B2 JP 2019535057 A JP2019535057 A JP 2019535057A JP 2019535057 A JP2019535057 A JP 2019535057A JP 6761129 B2 JP6761129 B2 JP 6761129B2
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- interlock
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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
- B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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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
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- B60K6/44—Series-parallel type
- B60K6/442—Series-parallel switching type
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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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- 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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- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
- B60W10/115—Stepped gearings with planetary gears
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60W50/0205—Diagnosing or detecting failures; Failure detection models
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
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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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- 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
- B60K6/48—Parallel type
- B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/68—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
- F16H61/684—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive
- F16H61/686—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive with orbital gears
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Description
ここで、「インターロック」とは、自動変速機の複数の摩擦要素のうち、締結指令が出力されていない1つ以上の摩擦要素が締結状態になることをいう。
自動変速機は、複数の摩擦要素を有し、複数の摩擦要素の締結状態又は解放状態を切り換えることで複数の変速段を達成する。
自動変速機コントローラは、自動変速機の非変速時に、車両の減速度、及び指令変速段と実際のギア比との関係に基づいて、インターロックが発生したか否かを判定するインターロック判定部を有する。
この自動変速機のインターロック判定装置において、自動変速機は、駆動源にエンジンとモータが搭載され、駆動モードとして、「EVモード」と「HEVモード」とを有するハイブリッド駆動系の中で、駆動源と駆動輪との間に介在する。
自動変速機コントローラは、インターロック判定部によりインターロックが発生したか否かの判定実行を許可するか禁止するかを決める判定実行判断処理部を備える。
判定実行判断処理部は、「EVモード」から「HEVモード」へのモード遷移要求に基づいてエンジンを始動するために自動変速機に有する摩擦要素をスリップ締結状態にするとき、摩擦要素のスリップ開始からスリップ収束が確認されるまでインターロックの判定実行を禁止する。
この点に着目し、本発明では、摩擦要素のスリップ開始からスリップ収束が確認されるまでインターロックの判定実行を禁止する構成を採用した。
この結果、「EVモード」から「HEVモード」へのモード遷移要求によるエンジン始動のために摩擦要素をスリップ締結状態にしたとき、「EVモード」への逆遷移要求(「EVモード」から「HEVモード」へのモード遷移要求があった後に「EVモード」へ遷移するモード遷移要求がある場合に、「逆遷移要求」という。)があってもインターロックであるとの誤検知を防止することができる。
実施例における自動変速機のインターロック判定装置は、1モータ・2クラッチと呼ばれるハイブリッド駆動系を備えるFRハイブリッド車両(ハイブリッド車両の一例)に適用されている。以下、実施例の構成を、「全体システム構成」、「自動変速機の概略構成」、「インターロック判定制御系構成」に分けて説明する。
図1は、実施例における自動変速機のインターロック判定装置が適用された後輪駆動によるFRハイブリッド車両を示し、図2は、統合コントローラ10のモード選択部に設定されているEV-HEV選択マップの一例を示す。以下、図1及び図2に基づいて、全体システム構成を説明する。
図3は、実施例における自動変速機ATの一例をスケルトン図により示し、図4は、自動変速機ATでの変速段ごとの各摩擦要素の締結状態を示す。以下、図3及び図4に基づいて、自動変速機ATの概略構成を説明する。
図5は、実施例におけるATコントローラ7のインターロック判定制御系の詳細構成を示す。以下、図5に基づいてインターロック判定制御系の全体構成を説明する。
図6は、実施例におけるATコントローラ7の判定実行判断処理部71にて実行されるインターロックの判定実行判断処理の流れを示す。以下、判定実行判断処理部71の構成をあらわす図6の各ステップについて説明する。
図7は、実施例においてATコントローラ7のインターロック判定部72でのインターロック判定処理概要を示す。以下、インターロック判定部72の構成をあらわす図7のインターロック判定処理動作について説明する。
図8は、実施例においてATコントローラ7のリンプホーム制御部73でのインターロック検知後の暫定リンプホーム制御において解放する摩擦要素を変速段毎に示す。以下、図8に基づいてリンプホーム制御部73での暫定リンプホーム制御について説明する。
実施例の作用を、「通常の遷移モードにおける判定禁止作用」、「CL2スリップ待機中→EVにおける判定禁止作用」、「CL2締結中→EVにおける判定禁止作用」、「HEV→EVにおける判定禁止作用」に分けて説明する。
図9は、「HEVモード」→「EVモード」→「HEVモード」への通常の遷移モードにおける各特性を示すタイムチャートである。以下、図9に基づいて通常の遷移モードにおける判定禁止作用を説明する。
図10は、「HEVモード」→「EVモード」→「CL2スリップ待機中/CL1ON中」→「EVモード」への遷移における各特性を示すタイムチャートである。以下、図10に基づいてCL2スリップ待機中→EVにおける判定禁止作用を説明する。
図11は、「HEVモード」→「EVモード」→「CL2締結中」→「EVモード」への遷移における各特性を示すタイムチャートである。以下、図11に基づいてCL2締結中→EVにおける判定禁止作用を説明する。
図12は、「HEVモード」→「EVモード」→「HEVモード」→「EVモード」への遷移における各特性を示すタイムチャートである。以下、図12に基づいてHEV→EVにおける判定禁止作用を説明する。
実施例の自動変速機ATのインターロック判定装置にあっては、下記に列挙する効果を得ることができる。
この自動変速機ATのインターロック判定装置において、自動変速機ATは、駆動源にエンジンEngとモータ(モータ/ジェネレータMG)が搭載され、駆動モードとして「EVモード」と「HEVモード」とを有するハイブリッド駆動系の中で、駆動源と駆動輪(左右後輪RL,RR)との間に位置する。
自動変速機コントローラ(ATコントローラ7)に、インターロック判定部72によりインターロックが発生したか否かの判定実行を許可するか禁止するかを決める判定実行判断処理部71を設ける。
判定実行判断処理部71は、「EVモード」から「HEVモード」へのモード遷移要求に基づいてエンジンEngを始動するために自動変速機ATに有する摩擦要素(第2クラッチCL2)をスリップ締結状態にするとき、摩擦要素(第2クラッチCL2)のスリップ開始からスリップ収束が確認されるまでインターロックの判定実行を禁止する(図5)。
このため、「EVモード」から「HEVモード」へのモード遷移要求によるエンジン始動のために摩擦要素(第2クラッチCL2)をスリップ締結状態にしたとき、「EVモード」への逆遷移要求があってもインターロックであるとの誤検知を防止することができる。この結果、自動変速機ATが正常であるにもかかわらず、インターロックを誤検知し、フェールセーフとしてEV固定となる不具合が発生するのが防止される。
判定実行判断処理部71は、エンジン始動フラグ(ENG始動フラグ)を読み込み、エンジン始動フラグ(ENG始動フラグ)がセットと判断されている間はインターロックの判定実行を禁止し、エンジン始動フラグ(ENG始動フラグ)がリセットと判断されても、摩擦要素(第2クラッチCL2)の差回転によるスリップ状態を監視し、スリップ収束と判断されるまでインターロックの判定実行の禁止を継続する(図6)。
このため、(1)の効果に加え、エンジン始動フラグ(ENG始動フラグ)を入力情報とする判定実行判断処理をベースとすることで、簡単な処理構成により「EVモード」への逆遷移要求があってもインターロックであるとの誤検知を防止することができる。
このため、(2)の効果に加え、エンジン始動フラグ(ENG始動フラグ)のリセットタイミングと、CL2差回転収束タイミングと、が一致するシーンにおいて(図9、図10)、応答良くインターロックの判定実行を許可することができる。
このため、(2)又は(3)の効果に加え、エンジン始動フラグ(ENG始動フラグ)のリセットタイミングと、CL2差回転収束タイミングと、が一致しないEV逆遷移要求があるシーンにおいて(図11、図12)、インターロックであるとの誤検知を確実に防止することができる。
Claims (5)
- 複数の摩擦要素を有し、これらの複数の摩擦要素の締結状態又は解放状態を切り換えることで複数の変速段を達成する自動変速機と、
前記自動変速機の非変速時に、車両の減速度、及び指令変速段と実際のギア比との関係に基づいて、締結状態又は解放状態を切り換えることで複数の変速段を達成する前記複数の摩擦要素のいずれかの誤締結によるインターロックが発生したか否かを判定するインターロック判定部を有する自動変速機コントローラと、
を備える自動変速機のインターロック判定装置において、
前記自動変速機は、駆動源にエンジンとモータが搭載され、駆動モードとして「EVモード」と「HEVモード」とを有するハイブリッド駆動系の中で、前記駆動源と駆動輪との間に位置し、
前記自動変速機コントローラは、前記インターロック判定部によりインターロックが発生したか否かの判定実行を許可するか禁止するかを決める判定実行判断処理部を備え、
前記判定実行判断処理部は、「EVモード」から「HEVモード」へのモード遷移要求に基づいて前記エンジンを始動するために前記自動変速機に有する摩擦要素をスリップ締結状態にするとき、前記摩擦要素のスリップ開始からスリップ収束が確認されるまでインターロックの判定実行を禁止する、
自動変速機のインターロック判定装置。 - 請求項1に記載された自動変速機のインターロック判定装置において、
「EVモード」から「HEVモード」へのモード遷移要求に基づいて前記エンジンを始動するエンジン始動フラグをセットし、「HEVモード」から「EVモード」へのモード遷移要求によりエンジン始動フラグをリセットするハイブリッドコントローラを有し、
前記判定実行判断処理部は、前記エンジン始動フラグを読み込み、エンジン始動フラグがセットと判断されている間はインターロックの判定実行を禁止し、エンジン始動フラグがリセットと判断されても、前記摩擦要素の差回転によるスリップ状態を監視し、スリップ収束と判断されるまでインターロックの判定実行の禁止を継続する、
自動変速機のインターロック判定装置。 - 請求項2に記載された自動変速機のインターロック判定装置において、
前記判定実行判断処理部は、前記エンジン始動フラグがセットからリセットに移行するとき、前記摩擦要素の差回転が、前記摩擦要素をスリップ状態とするスリップイン制御でのスリップ開始判定値を超えていると禁止を継続し、前記摩擦要素の差回転が前記スリップ開始判定値以下であるとインターロックの判定実行を許可する、
自動変速機のインターロック判定装置。 - 請求項2又は3に記載された自動変速機のインターロック判定装置において、
前記判定実行判断処理部は、前記エンジン始動フラグがリセットされているとき、前記摩擦要素の差回転が、インターロックの判定を誤判定しない所定値以内を所定時間継続するまで禁止を継続し、前記摩擦要素の差回転が前記所定値以内を所定時間継続するとインターロックの判定実行を許可する、
自動変速機のインターロック判定装置。 - 複数の摩擦要素を有し、これらの複数の摩擦要素の締結状態又は解放状態を切り換えることで複数の変速段を達成する自動変速機が、駆動源にエンジンとモータが搭載され、駆動モードとして「EVモード」と「HEVモード」とを有するハイブリッド駆動系の中で、前記駆動源と駆動輪との間に位置しており、
前記自動変速機の非変速時に、車両の減速度、及び指令変速段と実際のギア比との関係に基づいて、締結状態又は解放状態を切り換えることで複数の変速段を達成する前記複数の摩擦要素のいずれかの誤締結によるインターロックが発生したか否かを判定する、
自動変速機のインターロック判定方法において、
「EVモード」から「HEVモード」へのモード遷移要求に基づいて前記エンジンを始動するために前記自動変速機に有する摩擦要素をスリップ締結状態にするとき、前記摩擦要素のスリップ開始からスリップ収束が確認されるまでインターロックの判定実行を禁止する、
自動変速機のインターロック判定方法。
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