JP2020159258A - ハイブリッド車両、及びハイブリッド車両のエンジン制御方法 - Google Patents
ハイブリッド車両、及びハイブリッド車両のエンジン制御方法 Download PDFInfo
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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
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
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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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- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
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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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- B60K6/00—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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- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
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- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
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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
- 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]
- F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Hybrid Electric Vehicles (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Supercharger (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
(A−1)エンジン13が第1運転状態であること(たとえば、目標Teが図8に示した線L2よりも小さいこと)。
(A−2)WGV520が全開状態であること。
(A−3)エンジン13の過給圧(たとえば、過給圧センサ72により検出される圧力)がTh1以下であること。
(B−1)エンジン13が第2運転状態であること(たとえば、目標Teが図8に示した線L2よりも大きいこと)。
(B−2)EGRバルブ631が全閉状態であること。
(B−3)EGR率がTh2以下であること。
(A−4)HVECU62が図11のS26においてWGVアクチュエータ530に全開駆動の指令を出してから所定の第1時間が経過したこと。
(B−4)HVECU62が図10のS16においてEGRアクチュエータ632に全閉駆動の指令を出してから所定の第2時間が経過したこと。
Claims (9)
- 駆動輪と、
前記駆動輪と機械的に連結される、エンジン、第1モータジェネレータ、及び第2モータジェネレータと、
前記エンジン、前記第1モータジェネレータ、及び前記第2モータジェネレータを制御する制御装置とを備えるハイブリッド車両であって、
前記エンジンは、燃焼を行なうエンジン本体と、前記エンジン本体に接続された吸気通路及び排気通路と、前記エンジン本体を経由せずに前記吸気通路と前記排気通路とを接続する還流路と、前記還流路に設けられたEGRバルブと、過給機と、前記排気通路に接続されたバイパス路と、前記バイパス路に設けられたウェイストゲートバルブとを含み、
前記EGRバルブは、前記排気通路から前記吸気通路へ還流する排気の量を調整可能に構成され、
前記過給機は、前記吸気通路に設けられたコンプレッサと、前記排気通路に設けられたタービンとを備え、前記コンプレッサと前記タービンとは一体的に回転するように構成され、
前記バイパス路は、前記タービンを迂回して排気を流すように構成され、
前記エンジン及び前記第1モータジェネレータの各々は、プラネタリギヤを介して前記駆動輪に機械的に連結され、
前記プラネタリギヤ及び前記第2モータジェネレータは、前記プラネタリギヤから出力される動力と前記第2モータジェネレータから出力される動力とが合わさって前記駆動輪に伝達されるように構成され、
前記制御装置は、前記EGRバルブの開度が所定の第1開度を超えるときには前記ウェイストゲートバルブの開度を所定の第2開度以上に維持するように構成される、ハイブリッド車両。 - 前記制御装置は、前記EGRバルブが全閉状態であるときにのみ、前記ウェイストゲートバルブが前記第2開度未満に閉じることを許可するように構成される、請求項1に記載のハイブリッド車両。
- 前記制御装置は、前記エンジンが第1運転状態であるときに所定の第1要件が満たされると、前記ウェイストゲートバルブの開度を前記第2開度以上に維持して前記EGRバルブを前記第1開度よりも開き、前記エンジンが第2運転状態であるときに所定の第2要件が満たされると、前記EGRバルブを全閉状態に維持して前記ウェイストゲートバルブを前記第2開度未満の所定開度に閉じるように構成され、
前記第1運転状態と前記第2運転状態とは、同時には成立し得ない運転状態である、請求項1又は2に記載のハイブリッド車両。 - 前記第1運転状態は、前記エンジンに要求されるトルクが所定の閾値よりも小さい状態であり、
前記第2運転状態は、前記エンジンに要求されるトルクが前記閾値よりも大きい状態である、請求項3に記載のハイブリッド車両。 - 前記第2開度未満の前記所定開度は、全閉開度である、請求項3又は4に記載のハイブリッド車両。
- 前記制御装置からの指令に従って前記EGRバルブを駆動する第1アクチュエータと、
前記制御装置からの指令に従って前記ウェイストゲートバルブを駆動する第2アクチュエータとをさらに備え、
前記第1要件は、前記制御装置が前記第2アクチュエータに全開駆動の指令を出してから所定の第1時間が経過したことを含み、
前記第2要件は、前記制御装置が前記第1アクチュエータに全閉駆動の指令を出してから所定の第2時間が経過したことを含む、請求項3〜5のいずれか1項に記載のハイブリッド車両。 - 前記第1要件は、前記ウェイストゲートバルブの開度が前記第2開度以上であることと、前記エンジンの過給圧が所定値以下であることとを含み、
前記第2要件は、前記EGRバルブが全閉状態であることと、前記エンジン本体に供給される吸気のうち前記還流した排気が占める割合であるEGR率が所定値以下であることとを含む、請求項3〜6のいずれか1項に記載のハイブリッド車両。 - 前記第1開度は全閉開度であり、前記第2開度は全開開度である、請求項1〜7のいずれか1項に記載のハイブリッド車両。
- ハイブリッド車両のエンジン制御方法であって、
前記ハイブリッド車両は、
駆動輪と、
前記駆動輪と機械的に連結される、エンジン、第1モータジェネレータ、及び第2モータジェネレータと、
前記エンジン、前記第1モータジェネレータ、及び前記第2モータジェネレータを制御する制御装置とを備え、
前記エンジンは、燃焼を行なうエンジン本体と、前記エンジン本体に接続された吸気通路及び排気通路と、前記エンジン本体を経由せずに前記吸気通路と前記排気通路とを接続する還流路と、前記還流路に設けられたEGRバルブと、過給機と、前記排気通路に接続されたバイパス路と、前記バイパス路に設けられたウェイストゲートバルブとを含み、
前記EGRバルブは、前記排気通路から前記吸気通路へ還流する排気量を調整可能に構成され、
前記過給機は、前記吸気通路に設けられたコンプレッサと、前記排気通路に設けられたタービンとを備え、前記コンプレッサと前記タービンとは一体的に回転するように構成され、
前記バイパス路は、前記タービンを迂回して排気を流すように構成され、
前記エンジン及び前記第1モータジェネレータの各々は、プラネタリギヤを介して前記駆動輪に機械的に連結され、
前記プラネタリギヤ及び前記第2モータジェネレータは、前記プラネタリギヤから出力される動力と前記第2モータジェネレータから出力される動力とが合わさって前記駆動輪に伝達されるように構成され、
前記エンジン制御方法は、
前記EGRバルブを開くことが禁止されていないことと、所定のEGR実行条件が成立することとの両方が満たされるか否かを前記制御装置が判断することと、
前記EGRバルブを開くことが禁止されておらず、かつ、前記EGR実行条件が成立すると前記制御装置が判断した場合に、前記制御装置が、前記ウェイストゲートバルブの開度を所定の第2開度以上にして、前記EGRバルブを所定の第1開度よりも開くとともに、前記ウェイストゲートバルブが前記第2開度未満に閉じることを禁止することと、
前記EGRバルブが前記第1開度よりも開いているときに所定のEGR停止条件が成立すると、前記制御装置は、前記EGRバルブを全閉状態にして、前記ウェイストゲートバルブが前記第2開度未満に閉じることの前記禁止を解除することと、
前記ウェイストゲートバルブを前記第2開度未満に閉じることが禁止されていないことと、所定の過給実行条件が成立することとの両方が満たされるか否かを前記制御装置が判断することと、
前記ウェイストゲートバルブを前記第2開度未満に閉じることが禁止されておらず、かつ、前記過給実行条件が成立すると前記制御装置が判断した場合に、前記制御装置が、前記EGRバルブを全閉状態にして、前記ウェイストゲートバルブを前記第2開度未満に閉じるとともに、前記EGRバルブが開くことを禁止することと、
前記ウェイストゲートバルブが前記第2開度未満に閉じているときに所定の過給停止条件が成立すると、前記制御装置は、前記ウェイストゲートバルブの開度を前記第2開度以上にして、前記EGRバルブが開くことの前記禁止を解除することと、
を含む、ハイブリッド車両のエンジン制御方法。
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