POWER TRANSMISSION DEVICE FOR HYBRID VEHICLE

• Main Authors: OKUDA KOICHI, IMAI KEITA, IMAMURA TATSUYA, TABATA ATSUSHI, YAMAMOTO MASASHI, SATO ISAO, OMURO KEISUKE, KATSUMATA MUNEHIRO
• Format: Patent
• Language: English; Japanese
• Published: 05.02.2015
• 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; BLASTING; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To inhibit generation of rattle noise while suppressing deterioration of fuel economy.SOLUTION: A power transmission device for a hybrid vehicle includes: a transmission 20 having a plurality of gear shift rotating elements enabling differential rotation; a differential 30 having a plurality of differential rotating elements enabling differential rotation; and an HVECU. The transmission 20 includes: a clutch CL1 having a first engaging member and a second engaging member; a brake BK1 that has a first engaging member and a second engaging member and prohibits rotation of the first engaging member during complete engagement; a carrier C1 connected to a rotating shaft 11 of an engine and the second engaging member of the clutch CL1; and a sun gear S1 connected to the first engaging member of the clutch CL1 and the first engaging member of the brake BK1. The differential 30 includes: a carrier C2 connected to a ring gear R1 of the transmission 20; a sun gear S2 connected to a rotating shaft 12 of an MG1; and a ring gear R2 connected to a rotating shaft 13 of an MG2 and a driving wheel W. The HVECU performs slip control of the clutch CL1 and increases torque of the MG2 when a condition for generating rattle noise is satisfied. 【課題】燃費の悪化を抑えつつ、ガラ音の発生を抑えること。【解決手段】第１係合部材及び第２係合部材を有するクラッチＣＬ１と、第１係合部材及び第２係合部材を有し、完全係合時に当該第１係合部材の回転を禁止するブレーキＢＫ１と、エンジン回転軸１１とクラッチＣＬ１の第２係合部材とに連結されたキャリアＣ１と、クラッチＣＬ１の第１係合部材とブレーキＢＫ１の第１係合部材とに連結されたサンギヤＳ１と、を含む差動回転可能な複数の変速回転要素を有する変速装置２０と、変速装置２０のリングギヤＲ１に連結されたキャリアＣ２と、ＭＧ１回転軸１２に連結されたサンギヤＳ２と、ＭＧ２回転軸１３及び駆動輪Ｗに連結されたリングギヤＲ２と、を含む差動回転可能な複数の差動回転要素を有する差動装置３０と、ガラ音の発生条件が成立した場合に、クラッチＣＬ１をスリップ制御し、ＭＧ２トルクを増加させるＨＶＥＣＵと、を備えること。【選択図】図１