To provide a four-wheel drive vehicle control device that suppresses understeer caused by lack of lateral grip in a turning section when the accelerator of a four-wheel drive vehicle is off.SOLUTION: In a four-wheel drive vehicle that travels by transmitting a drive force to a front wheel by means of an electronic control coupling device, fastening of the electronic control coupling device is released or relaxed when an accelerator is closed from an accelerator opening degree equal to or higher than a threshold. In a braking section before a curve and a turning section at the time of entering the curve, the four-wheel drive vehicle travels as a rear-wheel drive vehicle that excels in turning performance or as a four-wheel drive vehicle in which distribution of drive force to a rear wheel with respect to the front wheel is large. In an accelerating section in which the vehicle exits from the curve, the vehicle fastens the electronic control coupling device by detecting an open state of the accelerator and travels as the original four-wheel drive vehicle.SELECTED DRAWING: Figure 5
【課題】四輪駆動車のアクセルオフ時の旋回区間における横方向のグリップの不足に起因するアンダーステアを抑制する四輪駆動車の制御装置を提供する。【解決手段】電子制御カップリング装置によって駆動力を前輪に伝えて走行する四輪駆動車において、閾値以上のアクセル開度からアクセル閉状態となった場合には、電子制御カップリング装置の締結を解除または緩和する。カーブ手前の制動区間及びカーブ侵入時の旋回区間においては、旋回性の優れる後輪駆動車または前輪に対して後輪の駆動力の配分が大きい四輪駆動車として走行する。カーブから脱出する加速区間においては、アクセルの開状態を検出したことにより電子制御カップリング装置を締結し、元の四輪駆動車として走行する。【選択図】図5
FOUR-WHEEL DRIVE VEHICLE CONTROL METHOD HAVING GOOD TURNING PERFORMANCE
旋回性の良い四輪駆動車制御方法
2021-11-11
Patent
Electronic Resource
Japanese
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 |
Turning control method and device for four-wheel-drive vehicle
European Patent Office | 2022
|TURNING CONTROL METHOD AND DEVICE FOR FOUR-WHEEL DRIVE VEHICLE
European Patent Office | 2024
|European Patent Office | 2018
|European Patent Office | 2018
|European Patent Office | 2019
|