JP6536595B2 - 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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- JP6536595B2 JP6536595B2 JP2017007656A JP2017007656A JP6536595B2 JP 6536595 B2 JP6536595 B2 JP 6536595B2 JP 2017007656 A JP2017007656 A JP 2017007656A JP 2017007656 A JP2017007656 A JP 2017007656A JP 6536595 B2 JP6536595 B2 JP 6536595B2
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- drive
- temperature
- output
- motor
- pinion
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Classifications
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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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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- B60Y2400/00—Special features of vehicle units
- B60Y2400/70—Gearings
- B60Y2400/73—Planetary gearings
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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
- 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
-
- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y10S903/906—Motor or generator
-
- 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
- Y10S903/909—Gearing
- Y10S903/91—Orbital, e.g. planetary gears
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- General Engineering & Computer Science (AREA)
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- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Description
エンジン1は、ガソリンエンジンやディーゼルエンジンなどの燃料を燃焼させて動力を出力する公知の動力装置であって、例えば、ガソリンエンジンにおいては、吸気通路に設けられたスロットルバルブのスロットル開度(吸気空気量)、燃料噴射量、点火時期などの運転状態を制御できるように構成されている。エンジン1の運転状態はECU100によって制御される。ECU100は、上記した吸入空気量制御、燃料噴射量制御、および、点火時期制御などを含むエンジン1の各種制御を実行する。
ワンウェイクラッチ2は、エンジン1の回転を規制する装置である。ワンウェイクラッチ2は、エンジン1の運転時における出力軸1aの回転方向を正方向とした場合、その出力軸1aの正方向の回転を許容し、負方向の回転(エンジン1の逆回転)を規制する。
第1モータジェネレータMG1は、入力軸3に対して相対回転自在に支持された永久磁石からなるロータMG1Rと、3相巻線が巻回されたステータMG1Sとを備えた交流同期発電機であって、発電機として機能するとともにモータ(走行用の駆動力を発生する駆動力源)としても機能する。また、第2モータジェネレータMG2も同様に、永久磁石からなるロータMG2Rと3相巻線が巻回されたステータMG2Sとを備えた交流同期発電機であって、モータ(走行用の駆動力を発生する駆動力源)として機能するとともに発電機としても機能する。
図1に示すように、遊星歯車機構4は、複数の歯車要素の中心で自転する外歯歯車のサンギヤS4と、サンギヤS4に外接しながらその周辺を自転しつつ公転する外歯歯車のピニオンギヤP4と、ピニオンギヤP4と噛み合うように中空環状に形成された内歯歯車のリングギヤR4と、ピニオンギヤP4を支持するとともに、このピニオンギヤP4の公転を通じて自転するキャリアCA4とを有する。ピニオンギヤP4は、キャリアCA4に保持されたピニオンピン(図示せず)に回転自在に支持されている。
ECU100は、CPU(Central Processing Unit)、ROM(Read Only Memory)、RAM(Random Access Memory)およびバックアップRAMなどを備えている。
本実施形態では、ハイブリッド走行モード(HV走行モード)またはEV走行モードを選択的に実行することが可能である。これらHV走行モードおよびEV走行モードはECU100によって実行される。
次に、ピニオン温度の推定処理について図4のフローチャートを参照して説明する。この図4の処理ルーチンはECU100において所定周期ごとに繰り返して実行される。
次に、両駆動EV走行モードを禁止する両駆動禁止フラグ、および第1モータジェネレータMG1の出力(以下、MG1出力ともいう)の上限を制限するMG1出力制限フラグの各フラグのON/OFFを設定する処理について、図8のフローチャートを参照して説明する。
次に、両駆動EV走行モードの禁止(以下、両駆動禁止ともいう)を解除する解除温度を設定する処理について、図9のフローチャートを参照して説明する。この処理ルーチンはECU100において実行される。
ECU100は、両駆動EV走行モードでの走行中において、第1モータジェネレータMG1を所定時間使用(例えば100時間使用)した場合の、第1モータジェネレータMG1の各出力(最大出力に対する比率[%]、以下、MG1出力[%]ともいう)ごとの頻度を学習・蓄積しており、その第1モータジェネレータMG1の出力頻度(以下、MG1出力頻度分布ともいう)から必要MG1出力P1[%]を算出する。具体的には、例えば、ある運転者によるMG1出力頻度分布が図10に示すような頻度分布であるとすると、この図10において、累積頻度[%]が、100[%]に対してマージンを見込んだ値(例えば、出力頻度のばらつき等を考慮して98%)となる第1モータジェネレータMG1の出力を、必要MG1出力P1[%]としている。
ECU100は、両駆動EV走行モードでの走行継続時間(以下、両駆動継続時間[sec]ともいう)ごとの頻度[%]を学習・蓄積しており、その両駆動継続時間の頻度分布から両駆動必要継続時間Δt[sec]を算出する。具体的には、例えば、ある運転者による両駆動継続時間の頻度分布が図11に示すような頻度分布であるとすると、この図11において、累積頻度[%]が、100[%]に対してマージンを見込んだ値(例えば、継続時間頻度のばらつき等を考慮して98%)となる両駆動継続時間を、両駆動必要継続時間Δt[sec]とする。
次に、ステップST122において、必要MG1出力P1[%]および両駆動必要継続時間Δt[sec]に基づいて両駆動EV走行モードの禁止を解除する解除温度T2を設定する。その解除温度T2の設定方法について図12を参照して説明する。
次に、両駆動EV走行モードの禁止制御を含む走行制御について、図14のフローチャートおよび図15、図16のタイミングチャートを参照して説明する。
以上説明したように、本実施形態によれば、両駆動EV走行モードでの走行中にピニオン推定温度Tが上限温度よりも高くなって両駆動EV走行モードが禁止された後、ピニオン推定温度Tが下限温度以下に低下するまでに、その下限温度よりも高い解除温度T2以下になったときに、両駆動EV走行モードの禁止を解除するので、両駆動EV走行モードが禁止される期間を短くすることができる。これにより、上記従来技術と比較して燃費の向上をはかることができる。
なお、今回開示した実施形態は、すべての点で例示であって、限定的な解釈の根拠となるものではない。したがって、本発明の技術的範囲は、上記した実施形態のみによって解釈されるものではなく、特許請求の範囲の記載に基づいて画定される。また、本発明の技術的範囲には、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。
1 エンジン
1a 出力軸
11 スロットルモータ
12 インジェクタ
13 点火プラグ
2 ワンウェイクラッチ
3 入力軸
4 遊星歯車機構
41 カウンタドライブギヤ(出力部材)
S4 サンギヤ
P4 ピニオンギヤ
R4 リングギヤ
CA4 キャリア
8 機械式オイルポンプ(MOP)
9 電動オイルポンプ(EOP)
100 ECU
101 エンジン回転数センサ
104 油温センサ
105 車速センサ
106 MG1回転数センサ
MG1 第1モータジェネレータ(第1モータ)
MG2 第2モータジェネレータ(第2モータ)
Claims (3)
- エンジンならびに第1モータおよび第2モータを駆動力源とし、サンギヤ、リングギヤ、および前記エンジンの出力トルクが伝達されるキャリアを備えるとともに、ピニオンギヤおよびピニオンピンを備える遊星歯車機構と、前記キャリアの回転を選択的に止めるブレーキ機構とを備え、前記サンギヤおよび前記リングギヤのうち、一方のギヤに前記第1モータが連結され、他方のギヤに駆動軸側へ動力を伝達する出力部材が連結され、前記出力部材に前記第2モータが連結されたハイブリッド車両であって、
要求駆動力に応じて、少なくとも前記エンジンの出力トルクによって前記ハイブリッド車両を走行させるHV走行モードと、前記第2モータの出力トルクによって前記ハイブリッド車両を走行させる単駆動EV走行モードと、前記ブレーキ機構により前記キャリアの回転を止めた状態で前記第1モータおよび前記第2モータの両方の出力トルクによって前記ハイブリッド車両を走行させる両駆動EV走行モードと、のいずれかの走行モードを設定するように構成されたハイブリッド車両の制御装置において、
前記ピニオンギヤまたは前記ピニオンピンの温度であるピニオン温度が上限温度よりも高いときには、前記両駆動EV走行モードを禁止し、前記両駆動EV走行モードに替えて前記HV走行モードを設定する両駆動EV走行モード禁止部と、
前記両駆動EV走行モード禁止部による前記両駆動EV走行モードの禁止状態において、前記ピニオン温度が前記上限温度よりも低い解除温度以下に低下したときには、前記両駆動EV走行モードの禁止を解除し、前記両駆動EV走行モードでの前記第1モータの出力を制限するモータ出力制限部と、
前記モータ出力制限部による前記第1モータの出力制限状態において、前記ピニオン温度が前記解除温度よりも低い下限温度以下に低下したときには、前記第1モータの出力制限を解除するモータ出力制限解除部と、を備えていることを特徴とするハイブリッド車両の制御装置。 - 請求項1に記載のハイブリッド車両の制御装置において、
前記モータ出力制限部は、前記ピニオン温度が高いほど前記第1モータの出力の上限を小さく設定するように構成されていることを特徴とするハイブリッド車両の制御装置。 - 請求項1または2に記載のハイブリッド車両の制御装置において、
運転者の駆動力要求傾向を取得する駆動力要求傾向取得部と、前記駆動力要求傾向取得部により取得された駆動力要求傾向に基づいて前記解除温度を設定する解除温度設定部とを備えていることを特徴とするハイブリッド車両の制御装置。
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