VEHICLE POWER TRANSMISSION DEVICE

• Main Author: OKAJI TOMOYA
• Format: Patent
• Language: English; Japanese
• Published: 27.05.2021
• 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; BRAKES; CLUTCHES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; COUPLINGS FOR TRANSMITTING ROTATION; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; 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

To provide a vehicle power transmission device capable of keeping vibration and noise low through prevention of resonance of a power transmission system and preventing respective components from shortening durability life.SOLUTION: A power transmission device 1 comprises a low clutch 12 and a high clutch 17 which switch power transmission paths from an engine 2 to drive wheels 24 through selectively engaging and disengaging the power transmission paths. The power transmission device also has: a misfire sensor 25; a rotation sensor 26; a resonance determination section 28 which determines whether or not a power transmission system is likely to enter a resonance region on the basis of a misfire state of the engine 2 detected through a misfire sensor 25 and an engine rotation speed detected through the rotation sensor 26; and an ECU (control means) 27 which puts either the low clutch 12 or the high clutch 17 in a disengagement state into an engagement state (half clutch state) when the resonance determination section 28 determines that the power transmission system is likely to enter the resonance region.SELECTED DRAWING: Figure 1 【課題】動力伝達系の共振を防いで振動と騒音を低く抑え、各部品の耐久寿命の低下を防ぐことができる車両の動力伝達装置を提供すること。【解決手段】本発明に係る車両の動力伝達装置１は、エンジン２から駆動輪２４への動力伝達経路を選択的に締結／切断することによって該動力伝達経路を切り替えるロークラッチ１２とハイクラッチ１７を備え、失火センサ２５と回転センサ２６と、失火センサ２５によって検出されるエンジン２の失火状態と回転センサ２６によって検出されるエンジン回転数から動力伝達系が共振域に入る可能性があるか否かを判定する共振判定部２８と、該共振判定部２８によって動力伝達系が共振域に入る可能性があると判定されると、ロークラッチ１２とハイクラッチ１７のうち、切断状態にあるロークラッチ１２またはハイクラッチ１７を係合状態（半クラッチ状態）とするＥＣＵ（制御手段）２７と、を有する。【選択図】図１