HYDRAULIC SYSTEM HAVING FLOW COMBINING CAPABILITIES

摘要

A hydraulic system (56) includes a variable displacement pump (66), and a variable displacement first travel motor (42L) selectively fluidly connected to the pump (66) in a closed- loop manner. The system (56) also includes a first switching valve (76) associated with the first travel motor (42L) and configured to selectively switch a flow direction of fluid passing through the first travel motor (42L) from the pump (66). The system (56) further includes a variable displacement second travel motor (42R) selectively fluidly connected to the pump (66) in a closed-loop manner. The system (56) also includes a second switching valve (76) associated with the second travel motor (42R) and configured to selectively switch a flow direction of fluid passing through the second travel motor (42R) from the pump (66).