To provide a hydraulic control circuit for a vehicle power transmission system in which during a travel mode established by engagement of one engagement device, simultaneous engagement with another engagement device can be avoided, and on the other hand a travel mode can be established by simultaneous engagement.SOLUTION: A hydraulic control circuit for a vehicle power transmission system is given in which with respect to at least any two engagement devices of a clutch CL1, a brake BR1, and a clutch CLc, simultaneous engagement prevention valves 72, 74, 76 prevent, when hydraulic pressure is supplied to one engagement device, supply of hydraulic pressure to the other engagement device not to perform simultaneous engagement. On the other hand, when hydraulic pressure Prel for releasing that enables simultaneous supply is output by an electromagnetic selector valve 78, simultaneous engagement is not avoided by the simultaneous engagement prevention valves 72, 74, 76 even if hydraulic pressure engaging two engagement devices is supplied so as to allow simultaneous engagement of the two engagement devices. Therefore, simultaneous engagement can be avoided during a travel mode is established by one element engagement, and on the other hand a travel mode can be established by simultaneous engagement.SELECTED DRAWING: Figure 2

    【課題】1つの係合装置の係合による走行モードの成立中に別の係合装置との同時係合を回避できると共に、同時係合による走行モードも成立させる。【解決手段】クラッチCL1、ブレーキBR1、及びクラッチCLcのうちの少なくとも何れか2つの係合装置にて、一方の係合装置へ油圧が供給されている状態のときには、他の1つの係合装置に油圧が供給されて同時係合してしまうことが、同時係合防止バルブ72,74,76により回避される。又、電磁切替バルブ78により、同時供給を可能にすることが可能な解除油圧Prelが出力されると、2つの係合装置を係合する油圧が供給されたときでも同時係合防止バルブ72,74,76において同時係合が回避されないので、それら2つの係合装置の同時係合が許容される。よって、1要素係合による走行モードの成立中に同時係合を回避することができると共に、同時係合による走行モードも成立させることができる。【選択図】図2


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    Title :

    HYDRAULIC CONTROL CIRCUIT FOR VEHICLE POWER TRANSMISSION SYSTEM


    Additional title:

    車両用動力伝達装置の油圧制御回路


    Contributors:

    Publication date :

    2019-04-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / F16H Getriebe , GEARING



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