To provide a four-wheel drive vehicle which quickly defines a determination that the vehicle is in a stationary traveling state when a possibility that the large transmission of drive force to sub-drive wheels become necessary is low, and can make compatible both fuel economy and traveling stability, and its control method.SOLUTION: A four-wheel drive vehicle 1 comprises: a control device 6 for controlling drive force transmitted to left-and-right rear wheels 191, 192 according to a traveling state; a plurality of sensors 101 to 106 for detecting the traveling state; and a communication device 72 for performing communication with a preceding vehicle 9. The control device 6 comprises: stationary traveling state detection means 611 for determining that an own vehicle is in a stationary traveling state by a prescribed determination condition; drive force control means 612 for calculating command values of the drive force which should be transmitted to the left-and-right rear wheels 191, 192, and reducing the command values when it is determined that the own vehicle is in the stationary traveling state; and determination condition change means 613 for alleviating a determination condition when information which is obtained by a communication device 71 indicates a stationary traveling of the preceding vehicle 9.SELECTED DRAWING: Figure 3
【課題】副駆動輪に駆動力を大きな伝達することが必要となる可能性が低い状況である場合に速やかに定常走行状態であることの判定を確定し、燃費性能と走行安定性の両立を図ることが可能な4輪駆動車及びその制御方法を提供する。【解決手段】4輪駆動車1は、走行状態に応じて左右後輪191,192に伝達される駆動力を制御する制御装置6と、走行状態を検出する複数のセンサ101〜106と、先行車両9との通信を行う通信装置72とを備える。制御装置6は、所定の判定条件により自車両が定常走行状態であると判定する定常走行状態判定手段611と、左右後輪191,192に伝達すべき駆動力の指令値を演算し、自車両が定常走行状態であると判定されたとき、この指令値を低減する駆動力制御手段612と、通信装置71によって得られた情報が先行車両9の定常走行状態を示すとき、判定条件を緩和する判定条件変更手段613とを有する。【選択図】図3
FOUR-WHEEL DRIVE VEHICLE AND CONTROL METHOD FOR FOUR-WHEEL DRIVE VEHICLE
4輪駆動車及び4輪駆動車の制御方法
2019-06-24
Patent
Elektronische Ressource
Japanisch
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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