IMPROVED HYDRAULIC FLUID HEATING USING REVERSIBLE HYDRAULIC FAN Russian patent published in 2018 - IPC E02F9/22 F01P3/18 

FIELD: machine building.

SUBSTANCE: invention relates to the field of heavy engineering, in particular to the hydraulic system of a work vehicle. In particular, a work vehicle is proposed, comprising a chassis that forms an engine compartment; at least one traction device supporting the chassis on the ground; an engine located in the engine compartment of the chassis and operably coupled to at least one traction device for moving the chassis along the ground; at least one hydraulic actuator that receives hydraulic fluid; and a cooling system. Cooling system comprises a hydraulic cooler in fluid communication with at least one hydraulic actuator for receiving hydraulic fluid; a fan having a first operating mode in which the fan directs air through the hydraulic cooler in a first direction; and a second operating mode in which the fan directs air from the engine compartment through the hydraulic cooler in a second direction opposite to the first direction; and a controller which drives the fan in the second operating mode when the temperature of the hydraulic fluid is below a predetermined temperature.

EFFECT: technical result is an increase in the efficiency of controlling temperature of hydraulic fluid in hydraulic actuators of a work vehicle.

22 cl, 4 dwg