VEHICLE CONTROL DEVICE

• Main Authors: TAKEICHI AKIRA, HATTORI KUNIO, ARAI SHOTARO
• Format: Patent
• Language: English; Japanese
• Published: 20.10.2016
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To suppress the occurrence of hunting of a vehicle speed even if a second driving force control for setting a target input shaft rotational speed of a continuously variable transmission on the basis of an optimum fuel consumption line while a first driving force control is being executed for setting the target input shaft rotational speed of the continuously variable transmission on the basis of a relationship between the vehicle speed and an accelerator opening degree without need to make an engine operating point along the optimum fuel consumption line.SOLUTION: If a first driving force control is switched to a second driving force control during the first driving force control, a driving force control is exerted with a latest target input shaft rotational speed Nintgt set during the first driving force control as the target input shaft rotational speed Nintgt set during the second driving force control. If the first driving force control is executed again even when the second driving force control is executed during the first driving force control, the target input shaft rotational speed Nintgt is not changed. Owing to this, it is possible to suppress hunting of a vehicle speed V due to the re-execution of the first driving force control by the change of the target input shaft rotational speed Nintgt due to the execution of the second driving force control.SELECTED DRAWING: Figure 7 【課題】エンジン動作点を最適燃費線に沿わせることなく、車速とアクセル開度との関係に基づいて無段変速機の目標入力軸回転速度を設定する第一駆動力制御の実行中に、最適燃費線に基づいて無段変速機の目標入力軸回転速度を設定する第二駆動力制御を実行しても、車速のハンチングが発生することを抑制する。【解決手段】第一駆動力制御中に第二駆動力制御へ切り替わる場合、第一駆動力制御中に設定された最新の目標入力軸回転速度Ｎintgtを第二駆動力制御中に設定される目標入力軸回転速度Ｎintgtとして駆動力制御する。第一駆動力制御中に第二駆動力制御を実行しても、再度、第一駆動力制御が実行された場合に、目標入力軸回転速度Ｎintgtが変化させられない為、第二駆動力制御が実行されることにより目標入力軸回転速度Ｎintgtが変化し、再度、第一駆動力制御が実行されることによる車速Ｖのハンチングを、抑制することができる。【選択図】図７