HYDRAULIC SYSTEM FOR OPERATION IN LOW TEMPERATURE CONDITIONS AND MACHINE EQUIPPED WITH IT Russian patent published in 2020 - IPC F15B21/45 

FIELD: machine building.

SUBSTANCE: present invention relates to a hydraulic system for operation in low temperature conditions, comprising: a coarse filter and a fine filter, installed in series between working fluid source and working units; and further comprising: two-way three-way valve, inlet of which is connected to coarse cleaning filter output; first outlet opening and second outlet of which are connected to fine filter inlet and working fluid source, respectively; where two-position three-way valve operates so that its inlet communicates with second outlet when working fluid temperature is below preset value, and the inlet is communicated with the first outlet when working fluid temperature is equal to or greater than a predetermined value. In compliance with this invention, the hydraulic system is capable of preventing damage to the fine filter by the working fluid having an excessively high pressure, and prevent ingress of insufficiently filtered working fluid into working assemblies. Present invention also relates to machine equipped with such hydraulic system, for example, loader.

EFFECT: disclosed are a hydraulic system for operation in low temperature conditions and a machine equipped with it.

9 cl, 3 dwg