Provided is a hydrostatic system including a first hydraulic unit, second and third hydraulic units fluidly connected to the first hydraulic unit, and a hydraulic accumulator fluidly connected to the first hydraulic unit and the third hydraulic unit, where the hydrostatic system is selectively coupleable to a prime mover and/or one or more wheels. The hydrostatic system may be operated in a hydrostatic driving mode where the hydraulic accumulator is isolated from the system and the first hydraulic unit drives the second and third hydraulic units, and in a hybrid driving mode where the hydraulic accumulator supplies fluid to the third hydraulic unit and the first hydraulic unit supplies or does not supply fluid to the second hydraulic unit. By selectively coupling the hydrostatic system to the prime mover, the hydrostatic system and the prime mover may be operated independent of one another. By selectively coupling the hydrostatic system to the wheels, the hydrostatic system and the wheels may be operated independent of one another.
HYDROSTATIC-PARALLEL HYDRAULIC HYBRID ARCHITECTURES
2016-04-28
Patent
Electronic Resource
English
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