Electro-hydraulic system for fan driving and brake charging

Power plants – Pressure fluid source and motor – With control means for structure storing work driving energy

Reexamination Certificate

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Details

C060S456000, C091S516000

Reexamination Certificate

active

11107953

ABSTRACT:
An electro-hydraulic system for a machine may include a brake charging system including at least one accumulator. A fan drive system may include a fan and a fan motor. A fluid source may be in communication with the brake charging system and the fan drive system. The fluid source may be configured to provide pressurized fluid to the brake charging system and the fan drive system to charge at least one accumulator and to drive a fan motor. A priority valve may be configured to provide pressure from the fluid source to the brake charging system, such that the fluid pressure at the accumulator is maintained at a substantially constant level during normal operating conditions.

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