Patent ID: 6354089
Filing Date: 2002-03-12
Classification: E02F,F15B

Abstract:
A work vehicle comprising:a vehicle structure; a power source supported by the vehicle structure; a plurality of wheels rotatably secured to the structure for supporting the structure upon a surface and rotatably coupled to the power source for moving the vehicle across the surface; a first hydraulic circuit including a first fluid, the first fluid being heated by a first mechanical system of the work vehicle; a second hydraulic circuit including a second fluid, the second fluid being heated by a second mechanical system of the work vehicle, wherein the first and second hydraulic circuits are configured to maintain the second fluid separate from the first fluid; at least one fluid cooler for cooling one of the first and second fluids; and an apparatus for transferring heat from the first fluid to the second fluid when the first fluid is hotter than the second fluid and for transferring heat from the second fluid to the first fluid when the second fluid is hotter than the first fluid.