CONTROL DEVICE OF FOUR-WHEEL DRIVE VEHICLE

• Main Authors: SUNAOSHI OSAMU, UMEZU DAISUKE, IMAMURA YASUMASA
• Format: Patent
• Language: English; Japanese
• Published: 20.06.2019
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

To inhibit the attitude of a four-wheel drive vehicle from becoming unstable even if control for changing the distribution of driving force and control for the vehicle attitude overlap with each other.SOLUTION: A distribution control part 101 controls a coupling 28 to change a distribution ratio of torque to front wheels 12F and rear wheels 12R. An attitude control part 102 controls vehicle attitude by reducing the driving force generated by an engine 14 to cause the vehicle to generate deceleration when a steering speed increases. An engine control part 103 changes the degree of reduction of the torque reduced by the attitude control part 102 on the basis of the distribution ratio of torque set by the distribution control part 101.SELECTED DRAWING: Figure 8 【課題】駆動力の配分を変更する制御と車両姿勢の制御とが重なったとしても、四輪駆動車の姿勢が不安定になることを抑制する。【解決手段】配分制御部１０１は、前輪１２Ｆと後輪１２Ｒとに対するトルクの配分比を変更するために、カップリング２８を制御する。姿勢制御部１０２は、操舵速度が増大したときに、エンジン１４で生成された駆動力を低下させることにより車両に減速度を発生させて車両姿勢を制御する。エンジン制御部１０３は、配分制御部１０１が設定したトルクの配分比に基づいて、姿勢制御部１０２により低下されるトルクの低下の度合いを変更する。【選択図】図８