VEHICLE DRIVE APPARATUS

• Main Authors: OKUDA KOICHI, TAKAIRA KOJI, HOMAN AKINORI, USUI KUNIHIKO, TABATA ATSUSHI, AKIYAMA YOSUKE, MAKINO YUKI, IJICHI AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 15.12.2022
• 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 improve energy efficiency in a vehicle drive apparatus as a whole when power is distributed by applying reaction force to a differential device with the electric-power generation torque of a TF rotary machine MGF.SOLUTION: In a torque-split mode to perform electric-power generation control for controlling distribution-time MGF torque TDmgf so that a torque distribution ratio Rx becomes a target distribution ratio Rdis, and to control total torque Tpu1 of a first power source PU1 so that requested drive torque Trdem is obtained irrespective of the distribution-time MGF torque TDmgf, when an operation point of an engine can be brought close to a fuel-economy optimum line Lfl by driving a TM rotary machine MGM through the use of a part or all of distribution-time generated electric power WDgmgf obtained by the electric-power generation control (determination in Step S5 is Yes), a part or all of the distribution-time generated electric power WDgmgf is supplied to the TM rotary machine MGM without intervention of a battery to drive the TM rotary machine MGM.SELECTED DRAWING: Figure 9 【課題】ＴＦ用回転機ＭＧＦの発電トルクで差動装置に反力を加えて動力分配する場合に、車両用駆動装置全体としてのエネルギー効率を向上させる。【解決手段】トルク分配比Ｒx が目標分配比Ｒdis になるように分配時ＭＧＦトルクＴＤmgf を制御する発電制御を行なうとともに、分配時ＭＧＦトルクＴＤmgf に拘らず要求駆動トルクＴrdemが得られるように第１動力源ＰＵ１の総トルクＴpu1 を制御するトルクスプリットモードにおいて、発電制御によって得られた分配時発電電力ＷＤgmgfの一部又は全部を用いてＴＭ用回転機ＭＧＭを駆動することによりエンジンの運転点を燃費最適線Ｌflに近付けることができる場合（ステップＳ５の判断がＹｅｓ）には、分配時発電電力ＷＤgmgfの一部又は全部をバッテリを介することなくＴＭ用回転機ＭＧＭに供給してそのＴＭ用回転機ＭＧＭを駆動する。【選択図】図９