JP4596016B2 - 車輌走行制御装置 - Google Patents
車輌走行制御装置 Download PDFInfo
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- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
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- Electric Propulsion And Braking For Vehicles (AREA)
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Description
加減速走行パターンは、上述したように、目標上限車速Vmaxと目標下限車速Vminの間で加速走行と惰性走行を交互に繰り返す走行パターンである。これが為、加減速走行パターンでの走行(以下、「加減速走行」という。)を行う際には、その目標上限車速Vmaxと目標下限車速Vminの設定をメインECU71に実行させる。本実施例のメインECU71は、その目標上限車速Vmaxと目標下限車速Vminをアクセルオフ時における現在の車輌の実際の走行状況に基づいて設定する。換言するならば、その目標上限車速Vmaxと目標下限車速Vminとは、実加減速走行パターンにおける上限側と下限側の目標車速のことである。従って、本実施例においては、その目標上限車速Vmaxと目標下限車速VminをメインECU71の実加減速走行パターン生成手段に設定させるものとする。
以下に、本実施例の補正加減速走行パターンについて説明する。本実施例の補正加減速走行パターンとしては、実加減速走行パターンに対して加速走行時の車輌の加速度を小さく補正することで加減速周期を基準加減速周期T0に近づける補正加減速走行パターン(以下、「第1補正加減速走行パターン」という。)と、実加減速走行パターンに対して惰性走行時の減速度を小さく補正することで加減速周期を基準加減速周期T0に近づける補正加減速走行パターン(以下、「第2補正加減速走行パターン」という。)と、実加減速走行パターンに対して実加減速周期中に定常車速走行を付け加えることで加減速周期を基準加減速周期T0に近づける補正加減速走行パターン(以下、「第3補正加減速走行パターン」という。)と、を例示する。
先ず、第1補正加減速走行パターンについての説明を図5に基づき行う。
次に、第2補正加減速走行パターンについての説明を図7に基づき行う。
次に、第3補正加減速走行パターンについて説明を図8に基づき行う。
11 クランクシャフト
20 動力分割機構
31 第1モータ/ジェネレータ
32 第2モータ/ジェネレータ
41 バッテリ(蓄電池)
42 インバータ
51 動力伝達機構
61 駆動軸
84 アクセル開度センサ
71 メインECU
72 機関ECU
73 モータ/ジェネレータECU
T0 基準加減速周期
T1 実加減速周期
Vmax 目標上限車速
Vmin 目標下限車速
Claims (13)
- 少なくとも熱機関を駆動源にして走行する車輌を目標下限車速到達後に当該駆動源の駆動力を利用して目標上限車速まで加速させる加速走行と、前記目標上限車速到達後に駆動輪への前記熱機関の駆動力の伝達を遮断して前記目標下限車速まで車輌を惰性で走行させる惰性走行と、を交互に繰り返す加減速走行パターンを実行する車輌走行制御装置において、
燃費が良好になる前記加減速走行パターンの目標値としての実加減速走行パターンを現在の実際の車輌の車速や走行中の路面の路面勾配に基づいて生成する実加減速走行パターン生成手段と、
前記実加減速走行パターンにおける前記惰性走行が始まってから当該惰性走行に続く前記加速走行が終わるまでの実加減速周期と、前記惰性走行が始まってから当該惰性走行に続く前記加速走行が終わるまでの加減速周期であり、運転者が好みに応じて変更可能な又は予め燃費の向上及び車速や車輌の加減速の変化に伴う運転者の違和感の解消の両立が図れるよう設定された基準加減速周期と、を比較する加減速周期比較手段と、
前記実加減速周期が前記基準加減速周期よりも短い場合に、前記実加減速走行パターンの実加減速周期を長くした補正加減速走行パターンを生成する補正加減速走行パターン生成手段と、
を設け、
前記補正加減速走行パターンの生成が行われなければ前記実加減速走行パターンをそのまま加減速走行パターンの目標値として設定し、前記補正加減速走行パターンの生成が行われれば当該補正加減速走行パターンを前記実加減速走行パターンに替えて加減速走行パターンの目標値として設定することを特徴とする車輌走行制御装置。 - 前記補正加減速走行パターン生成手段は、前記実加減速周期を長くした補正加減速走行パターンを生成する際、前記実加減速走行パターンにおける加速走行時の加速度を小さく補正するように構成したことを特徴とする請求項1記載の車輌走行制御装置。
- 前記熱機関の動力の一部を利用して発電された電力を蓄電する蓄電池の目標充電量の設定を行う目標充電量設定手段を設け、該目標充電量設定手段は、前記補正加減速走行パターン生成手段によって加速走行時の加速度が小さく補正された場合、該補正後の加速度に対応させた大きな値へと目標充電量を再設定するように構成したことを特徴とする請求項2記載の車輌走行制御装置。
- 車輌が前記熱機関の他に電動機を駆動源として備えている場合、前記補正加減速走行パターン生成手段は、前記実加減速周期を長くした補正加減速走行パターンを生成する際、前記電動機の駆動力を加えることで前記実加減速走行パターンにおける惰性走行時の減速度を小さく補正するように構成したことを特徴とする請求項1記載の車輌走行制御装置。
- 前記補正加減速走行パターン生成手段は、前記実加減速周期を長くした補正加減速走行パターンを生成する際、前記実加減速走行パターンの前記惰性走行から前記加速走行へと移るときに前記目標下限車速での定常車速走行を付け加え又は/及び前記実加減速走行パターンの前記加速走行から前記惰性走行へと移るときに前記目標上限車速での定常車速走行を付け加えるよう構成したことを特徴とする請求項1記載の車輌走行制御装置。
- 前記目標上限車速での定常車速走行は、前記熱機関を作動させることで実行させ、前記目標下限車速での定常車速走行は、車輌が前記熱機関の他に電動機を駆動源として備えているならば当該電動機を作動させることで実行させることを特徴とする請求項5記載の車輌走行制御装置。
- 前記実加減速走行パターン生成手段は、車輌の走行状況たる走行中の路面の路面勾配と車速とに基づいて前記熱機関の熱効率に優れる前記実加減速走行パターンの加速走行時の最良加速度を求めるよう構成したことを特徴とする請求項1から6の内の何れか1つに記載の車輌走行制御装置。
- 前記実加減速走行パターン生成手段は、運転者の要求に従って前記目標上限車速の設定を行うことを特徴とする請求項1から7の内の何れか1つに記載の車輌走行制御装置。
- 前記運転者の要求は当該運転者のアクセルペダル操作に伴うアクセルオフ要求であり、前記実加減速走行パターン生成手段は、アクセルオフとなった時点の車速を前記目標上限車速として設定するように構成したことを特徴とする請求項8記載の車輌走行制御装置。
- 前記実加減速走行パターン生成手段は、車輌の走行状況たる前記目標上限車速と走行中の路面の路面勾配とに基づいて前記目標下限車速の設定を行うことを特徴とする請求項1から9の内の何れか1つに記載の車輌走行制御装置。
- 前記実加減速走行パターン生成手段は、走行中の路面の路面勾配が上り勾配の場合、前記目標上限車速が高いほど当該目標上限車速との間の車速差が小さくなるように前記目標下限車速の設定を行うことを特徴とする請求項1から10の内の何れか1つに記載の車輌走行制御装置。
- 前記実加減速走行パターン生成手段は、走行中の路面の路面勾配が下り勾配の場合、前記目標上限車速が高いほど当該目標上限車速との間の車速差が大きくなるように前記目標下限車速の設定を行うことを特徴とする請求項1から11の内の何れか1つに記載の車輌走行制御装置。
- 前記惰性走行は、前記熱機関の駆動力の前記駆動輪への伝達を遮断させると共に当該熱機関を停止させることで実行する又は前記熱機関のアイドリング状態での燃料消費量が少なければ当該熱機関を停止させずに当該熱機関の駆動力の前記駆動輪への伝達を遮断させるのみで実行することを特徴とする請求項1から12の内の何れか1つに記載の車輌走行制御装置。
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PCT/JP2009/052170 WO2009101920A1 (ja) | 2008-02-12 | 2009-02-09 | 車輌走行制御装置及び車輌走行制御方法 |
EP09709756.2A EP2243675A4 (en) | 2008-02-12 | 2009-02-09 | Vehicle travel control device and vehicle travel control method |
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WO2009101920A1 (ja) | 2009-08-20 |
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US20100324795A1 (en) | 2010-12-23 |
CN101687508B (zh) | 2012-11-14 |
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CN101687508A (zh) | 2010-03-31 |
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