To provide a driving force transmission control device which adjusts an upper limit value of a driving force capable of being transmitted to a sub-driving wheel while surely preventing damage of components of a driving force transmission path of transmitting a driving force to the sub-driving wheel, and thereby can enhance travel stability of a four-wheel drive vehicle.SOLUTION: A driving force transmission control device 8 includes a driving force transmission device 2 capable of adjusting a driving force of being transmitted to right and left rear wheels 191 and 192, and a control device 7 for controlling the driving force transmission device 2. The control device 7 includes: torque command value calculation means 71 for calculating a torque command value to right and left rear wheels 191 and 192 based on a rotation speed difference between front and rear wheels; command value restriction means 72 for restricting the torque command value to an upper limit value or lower; and current control means 73 for controlling electric current supplied to the driving force transmission device 2 so that a driving force according to the torque command value transmits the right and left rear wheels 191 and 192. The command value restriction means 72 sets an upper limit value to be smaller as a change amount of the rotation speed difference between front and rear wheels per time is greater when the rotation speed difference between front and rear wheels is increased.SELECTED DRAWING: Figure 3
【課題】副駆動輪に駆動力を伝達する駆動力伝達経路の構成部品の破損を確実に防ぎながらも、副駆動輪へ伝達することが可能な駆動力の上限値を調整することで4輪駆動車の走行安定性を高めることが可能な駆動力伝達制御装置を提供する【解決手段】駆動力伝達制御装置8は、左右後輪191,192に伝達される駆動力を調節可能な駆動力伝達装置2と、駆動力伝達装置2を制御する制御装置7とを備える。制御装置7は、前後輪回転速差に基づいて左右後輪191,192へのトルク指令値を演算するトルク指令値演算手段71と、トルク指令値を上限値以下に制限する指令値制限手段72と、トルク指令値に応じた駆動力が左右後輪191,192に伝達されるように駆動力伝達装置2に供給する電流を制御する電流制御手段73とを有する。指令値制限手段72は、前後輪回転速差が増大するとき、前後輪回転速差の時間当たりの変化量が大きいほど上限値を低く設定する。【選択図】図3
DRIVING FORCE TRANSMISSION CONTROL DEVICE
駆動力伝達制御装置
2019-03-28
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 |
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