The invention provides a hydraulic circuit of a vehicle drive device, which can effectively reduce operation resistance of the vehicle drive device and a power transmission device caused by oil flowing through the hydraulic circuit and a cooling oil passage through a simple structure, thereby improving fuel efficiency of a vehicle. A cooling oil passage (L1) for guiding oil to a section (41) to be cooled of a vehicle (1) is provided with: an axial cooling oil passage (L12) for supplying cooling oil to the axial center of a rotating shaft of an electric motor (11) mounted on the vehicle; and a cooling oil passage shift valve (84) that switches whether or not to supply oil to the axial center cooling oil passage (L12), whereby it is possible to supply cooling oil to the axial center of the rotating shaft of the electric motor (11) only if necessary.
本发明提供一种车辆用驱动装置的油压回路,其可通过简单的结构有效果地降低由在油压回路及冷却油路中流通的油引起的车辆用驱动装置及动力传递装置的动作阻力,从而可实现车辆的燃油效率的提高。用于将油引导至车辆(1)的被冷却部(41)的冷却油路(L1)包括:轴心冷却油路(L12),向搭载于车辆的电动马达(11)的旋转轴的轴心供给冷却用的油;以及冷却油路用换档阀(84),对是否向轴心冷却油路(L12)供给油进行切换,由此,可仅在必要的情况下向电动马达(11)的旋转轴的轴心供给冷却用的油。
Hydraulic circuit for vehicle drive device
车辆用驱动装置的油压回路
2023-04-28
Patent
Electronic Resource
Chinese
IPC: | F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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