To provide a hydraulic circuit of a vehicle drive device which enables effective reduction of operation resistance of a vehicle drive device and a power transmission device caused by an oil circulating through a hydraulic circuit and a cooling oil passage with a simple structure and can achieve improvement of fuel consumption of a vehicle.SOLUTION: A cooling oil passage (L1) for guiding an oil to a cooled part (41) of a vehicle (1) includes: an axis cooling oil passage (L12) which supplies a cooling oil to an axis of a rotary shaft of an electric motor (11) mounted on the vehicle; and a shift valve (84) for the cooling oil passage which switches a state of oil supply to the axis cooling oil passage (L12) between a supplied state and a non-supplied state. The structure allows the cooling oil to be supplied to the axis of the rotary shaft of the electric motor (11) only when required.SELECTED DRAWING: Figure 2
【課題】簡単な構成で油圧回路及び冷却油路を流通するオイルによる車両用駆動装置及び動力伝達装置の動作抵抗を効果的に低減させることができ、車両の燃費の向上を図ることができる車両用駆動装置の油圧回路を提供する。【解決手段】車両(1)の被冷却部(41)にオイルを導くための冷却油路(L1)は、車両に搭載された電気モータ(11)の回転軸の軸心に冷却用のオイルを供給する軸心冷却油路(L12)と、軸心冷却油路(L12)へのオイルの供給の有無を切り替える冷却油路用シフトバルブ(84)と、を備えることで、必要な場合にのみ、電気モータ(11)の回転軸の軸心に冷却用のオイルを供給することができる。【選択図】図2
HYDRAULIC CIRCUIT OF VEHICLE DRIVE DEVICE
車両用駆動装置の油圧回路
2023-05-10
Patent
Electronic Resource
Japanese
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 |
Hydraulic drive vehicle control method, control device and hydraulic drive vehicle
European Patent Office | 2024
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