JP2017095030A - 車両制御装置 - Google Patents
車両制御装置 Download PDFInfo
- Publication number
- JP2017095030A JP2017095030A JP2015231393A JP2015231393A JP2017095030A JP 2017095030 A JP2017095030 A JP 2017095030A JP 2015231393 A JP2015231393 A JP 2015231393A JP 2015231393 A JP2015231393 A JP 2015231393A JP 2017095030 A JP2017095030 A JP 2017095030A
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- JP
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- Prior art keywords
- vehicle
- downhill
- control
- regeneration
- acceleration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001133 acceleration Effects 0.000 claims abstract description 114
- 230000008929 regeneration Effects 0.000 claims abstract description 75
- 238000011069 regeneration method Methods 0.000 claims abstract description 75
- 230000005540 biological transmission Effects 0.000 claims description 14
- 239000000284 extract Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 25
- 230000007423 decrease Effects 0.000 description 23
- 230000008569 process Effects 0.000 description 23
- 238000010586 diagram Methods 0.000 description 15
- 238000005381 potential energy Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000009467 reduction Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
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- 230000001172 regenerating effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Abstract
Description
本発明に係る実施形態について図を参照しながら説明する。以下の説明では、エンジン及び走行用のモータから車両走行用の駆動力を得るハイブリッド車両に、本実施形態の車両制御装置を適用している。以下、ハイブリッド車両を単に車両とも記載する。なお、以下の実施形態相互において、互いに同一もしくは均等である部分には、図中、同一符号を付しており、同一符号の部分についてはその説明を援用する。
この第2実施形態では、下り坂において回生を実施する構成は第1実施形態と同じであるが、回生を実施する下り坂の一部の区間において車両100を加速させる下り坂加速制御を実施する構成が第1実施形態と異なる。
減速開始位置Dcを目標車速V1に基づいて設定することは一例に過ぎない。例えば、充電率SOCの低下目標値に基づいて設定してもよい。図16は、第3実施形態において、減速開始位置Dcの設定を示すフローチャートである。図16に示すフローチャートは、例えば、図3のステップS14で用いられる処理である。また、図17は、充電率SOCの低下目標値(SOC低下目標値)と、下り坂の勾配開始位置Ddから減速開始位置Dcまでの距離(2点間距離)Lとの関係を示す図である。
上述した第1〜第3実施形態において、下り坂を走行する前に減速制御を1回だけ行うことは一例に過ぎず、下り坂を走行する前に減速制御を複数回繰り返すものであってもよい。また、減速制御の実施前に加速制御を行う場合、下り坂の手前で加速制御と減速制御を複数回繰り返すものであってもよい。
車両100の構成として、駆動軸においてエンジンとモータとを1つのクラッチで繋ぐ構成としたことは一例に過ぎない。車両100の構成としては、駆動軸においてエンジンとモータとを2つのクラッチで繋ぐ構成としてもよい。また、駆動力伝達機構として、クラッチではなく遊星ギアを用いた動力分割機構を用いるものであってもよい。この場合、車両100の構成は、駆動軸においてエンジンと2つのモータとを用い、動力分割機構により、それぞれエンジン出力とモータ出力とを取り出す構成としてもよい。さらに、車両100の構成として、エンジンとモータとを繋ぐ駆動力伝達機構を備えず、エンジンとモータとが出力軸を介して直結されている構成や、エンジンを前輪側の出力軸に繋ぎ、モータを後輪側の出力軸に繋ぐ構成であってもよい。
Claims (8)
- エンジン(31)と、蓄電池(40)から供給される電力により駆動するモータ(32)とを備え、少なくともエンジン出力及びモータ出力のいずれかを駆動力として使用する車両(100)を制御する車両制御装置(50)であって、
下り坂において前記モータに回生を実施させる回生制御部(S44)と、
前記回生が実施される前記下り坂の一部の区間において、前記車両に前記エンジン出力を駆動出力として使用させず、且つ前記モータの回生を伴わない加速走行をさせる下り坂加速制御を実施する下り坂加速制御部(S43)と、
を有する車両制御装置。 - 前記車両は、前記エンジン出力の前記駆動力への伝達を切り替える伝達切替え部(33)を有し、
前記下り坂加速制御部は、前記下り坂加速制御において、前記伝達切替え部に前記エンジン出力の伝達を切り離させる、請求項1に記載の車両制御装置。 - 前記下り坂加速制御部は、前記下り坂加速制御において、前記エンジンの駆動を停止させる、請求項1又は請求項2に記載の車両制御装置。
- 前記下り坂加速制御部は、前記下り坂加速制御において、前記車両の加速度が閾値以上と成る場合、前記モータに負のトルクを生じさせる、請求項1から請求項3のいずれか一項に記載の車両制御装置。
- ナビゲーション装置(60)から供給される地理情報に基づいて、前記下り坂の曲率を取得する曲率取得部(S33)を有し、
前記下り坂加速制御部は、前記曲率が閾値以上である場合、前記下り坂加速制御を実施しない、請求項1から請求項4のいずれか一項に記載の車両制御装置。 - 前記下り坂加速制御を実施する前に、車速を減少させて前記蓄電池の充電率を低下させる減速制御を実施する充電率制御部(S47)を有する請求項1から請求項5のいずれか一項に記載の車両制御装置。
- 前記充電率制御部は、
前記回生が実施される位置よりも手前の位置で、前記減速制御を行い、
前記減速制御において、前記車両の駆動力を前記モータのみの出力を取り出す駆動力まで低下させて、車両を減速走行させる、請求項6に記載の車両制御装置。 - 前記下り坂加速制御部は、前記車両が車速を設定速度に制御する定速走行状態である場合に、前記下り坂加速制御を実施する、請求項1から請求項7のいずれか一項に記載の車両制御装置。
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