JP6927133B2 - 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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- JP6927133B2 JP6927133B2 JP2018080857A JP2018080857A JP6927133B2 JP 6927133 B2 JP6927133 B2 JP 6927133B2 JP 2018080857 A JP2018080857 A JP 2018080857A JP 2018080857 A JP2018080857 A JP 2018080857A JP 6927133 B2 JP6927133 B2 JP 6927133B2
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mathematical Physics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
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Description
以下、図1〜図8を参照して本発明の第一実施形態について説明する。
図1は、本発明の第一実施形態に係るハイブリッド車両1の構成を概略的に示す図である。ハイブリッド車両(以下、単に「車両」と称する)1は、内燃機関40、第1電動発電機12、動力分割機構14、第2電動発電機16、パワーコントロールユニット(PCU)18及びバッテリ20を備える。
図2は、本発明の第一実施形態に係るハイブリッド車両の制御装置等の構成を概略的に示すブロック図である。車両1は電子制御ユニット(ECU)60を備える。ECU60は、車両1を制御する電子制御装置である。ECU60は、読み出し専用メモリ(ROM)及びランダムアクセスメモリ(RAM)のようなメモリ、中央演算装置(CPU)、入力ポート、出力ポート、通信モジュール等を備える。本実施形態では、一つのECU60が設けられているが、機能毎に複数のECUが設けられていてもよい。
図3A及び図3Bは、本発明の第一実施形態における走行計画生成処理の制御ルーチンを示すフローチャートである。本制御ルーチンはECU60によって実行される。本制御ルーチンでは、触媒43の暖機回数を考慮しない第1走行計画と、触媒43の暖機回数を考慮する第2走行計画とが生成され、燃焼消費量の合計が少ない走行計画が採用される。図4A〜図4Cは、第1走行計画の生成を説明するための図である。図5A〜図5Gは、第2走行計画の生成を説明するための図である。
DEk≦CE<DEk+1 …(1)
ここで、DEkは、第1ソート区間番号1から第1ソート区間番号kまでの各区間の電力消費量の合計である。DEk+1は、第1ソート区間番号1から第1ソート区間番号k+1までの各区間の電力消費量の合計である。
REk≦CE<REk+1 …(2)
ここで、REkは、ソート経路番号1からソート経路番号kまでの各経路の経路電力消費量の合計である。REk+1は、ソート経路番号1からソート経路番号k+1までの各経路の経路電力消費量の合計である。
EEk≦ΔCE<EEk+1 …(3)
ここで、EEkは、第2ソート区間番号1から第2ソート区間番号kまでの各区間の電力消費量の合計である。EEk+1は、第2ソート区間番号1から第2ソート区間番号k+1までの各区間の電力消費量の合計である。
上述したように生成された走行計画に基づいて車両1を走行させることによって、車両1の燃費を改善することができる。しかしながら、車両1の運転状態、走行ルートの交通状況等によってバッテリ20の実際のSOCが目標SOCからずれることがある。例えば、車両1に設けられたエアコンにおいて消費される電力量が多い場合、走行ルートにおいて渋滞が発生している場合等には、電力消費量が予想よりも大きくなり、実際のSOCが目標SOCよりも低くなる。
図8は、本発明の第一実施形態における走行モード変更処理の制御ルーチンを示すフローチャートである。本制御ルーチンは、ECU60によって所定の実行間隔で繰り返し実行される。
第二実施形態に係るハイブリッド車両の制御装置は、以下に説明する点を除いて、基本的に第一実施形態に係るハイブリッド車両の制御装置の構成及び制御と同様である。このため、以下、本発明の第二実施形態について、第一実施形態と異なる部分を中心に説明する。
図9は、本発明の第二実施形態における走行モード変更処理の制御ルーチンを示すフローチャートである。本制御ルーチンは、ECU60によって所定の実行間隔で繰り返し実行される。
第三実施形態に係るハイブリッド車両の制御装置は、以下に説明する点を除いて、基本的に第一実施形態に係るハイブリッド車両の制御装置の構成及び制御と同様である。このため、以下、本発明の第三実施形態について、第一実施形態と異なる部分を中心に説明する。
図10は、本発明の第三実施形態における走行モード変更処理の制御ルーチンを示すフローチャートである。本制御ルーチンは、ECU60によって所定の実行間隔で繰り返し実行される。
第四実施形態に係るハイブリッド車両の制御装置は、以下に説明する点を除いて、基本的に第一実施形態に係るハイブリッド車両の制御装置の構成及び制御と同様である。このため、以下、本発明の第四実施形態について、第一実施形態と異なる部分を中心に説明する。
以上、本発明に係る好適な実施形態を説明したが、本発明はこれら実施形態に限定されるものではなく、特許請求の範囲の記載内で様々な修正及び変更を施すことができる。
16 第2電動発電機
20 バッテリ
40 内燃機関
41 排気通路
43 触媒
60、60’ 電子制御ユニット(ECU)
61 走行計画生成部
62 出力制御部
63 下限値設定部
Claims (3)
- 排気通路に触媒が設けられた内燃機関と、電動機と、該電動機に電力を供給すると共に該内燃機関の出力によって充電可能なバッテリとを備えるハイブリッド車両を制御する、ハイブリッド車両の制御装置であって、
前記ハイブリッド車両が走行するときの走行モードを予め設定する走行計画生成部と、
前記走行モードに基づいて前記内燃機関及び前記電動機の出力を制御する出力制御部と、
前記バッテリの充電率の下限値を設定する下限値設定部と
を備え、
前記走行計画生成部は、前記ハイブリッド車両が出発地から少なくとも一つの経由地を経由して最終目的地まで走行する場合に、該経由地を始点及び終点の少なくとも一方とする複数の経路を複数の区間に分割し、少なくとも一つの経路の全ての区間の走行モードを、前記内燃機関が停止され且つ前記電動機のみによって走行用の動力が出力されるEVモードに設定し、前記経由地は、前記ハイブリッド車両が停車して前記内燃機関が停止される地点であり、
前記出力制御部は、前記バッテリの実際の充電率が前記下限値よりも低くなった場合には、前記実際の充電率が維持され又は高くなるように、前記走行計画生成部によって設定された走行モードを変更し、
前記下限値設定部は、全ての区間の走行モードが前記EVモードに設定されたEV経路では、該EV経路以外の非EV経路に比べて、前記下限値を低くする、ハイブリッド車両の制御装置。 - 前記下限値設定部は、前記EV経路において走行モードが前記EVモードに維持されたときに前記実際の充電率が基準値に達しない場合にのみ、前記EV経路において前記下限値を低くし、前記基準値は、前記非EV経路における前記下限値よりも低い値として予め定められる、請求項1に記載のハイブリッド車両の制御装置。
- 前記下限値設定部は、前記最終目的地に最も近い前記EV経路においてのみ、前記下限値を低くする、請求項1又は2に記載のハイブリッド車両の制御装置。
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