Hydraulic Brake Cooling Layout to Protect Machine Efficiency

The cooling circuit is segmented into two distinct flow paths: a first circuit that draws fluid from the hydraulic machine cooling zone and returns it to the hydraulic machine, and a second circuit that draws fluid from the braking system cooling zone and returns it to the braking system. This segmentation prevents heat transfer from the braking system to the hydraulic machine while maintaining structural simplicity through a shared fluid reservoir and pump system.

While the cooling circuits are functionally separate, they are merged at the system level by sharing the fluid reservoir (casing), the fluid circulation pump, and the overall circuit architecture. This merging approach maintains the thermal isolation benefits of separate circuits while avoiding the complexity and bulk of completely independent cooling systems with separate reservoirs and pumps.

The system incorporates preliminary pressure management features including pressure relief valves and temperature-activated expansion chambers that are pre-configured in the circuit. These elements are designed to activate before dangerous pressure levels are reached, preventing pressure buildup while allowing effective cooling of the braking system. The circuit is pre-bled of air pockets and pre-filled with appropriate fluid volumes to prevent pressure issues from the outset.