Power-splitting transmission
AssigneeZF Friedrichshafen AG
InventorsStefan Prebeck, Michael Walser
Life of this patent
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Abstract
A power-splitting transmission which consists of a hydraulic power branch (7) and a mechanical power branch. Leakage in the hydraulic power branch (7) as well as the activation apparatuses (12) in the mechanical power branch are supplied with a pressurized medium from a common pressure source (1). The common pressure source (1) transports pressure medium to the hydraulic power branch (7), through a damping apparatus (3), and simultaneously transports pressure medium to the activation apparatuses (12) of the shifting elements (13) of the mechanical power branch via a controller (11).
Claims8
A power-splitting transmission having a hydraulic power branch (7) and a mechanical power branch, the mechanical power branch having hydraulically activated shifting elements (13), the hydraulic power branch having a hydraulic motor (9) and a hydraulic pump (6), a delivery opening and an intake opening of the hydraulic motor (9) are connected with a delivering opening and an intake opening of the hydraulic pump (6), and a pressure source (1) compensates for leakage in the hydraulic power branch (7) and also supplies pressure to the mechanical power branch, via a controller (11), for activation of the shifting elements (13);
- wherein a damping apparatus (3) is located between the pressure source (1) and the hydraulic power branch (7), and the damping apparatus (3) exclusively comprises a volume expansion.
A power-splitting transmission having a hydraulic power branch (7) and a mechanical power branch, the mechanical power branch having hydraulically activated shifting elements (13), the hydraulic power branch having a hydraulic motor (9) and a hydraulic pump (6), a delivery opening and an intake opening of the hydraulic motor (9) are connected with a delivering opening and an intake opening of the hydraulic pump (6), and a pressure-source (1) compensates for leakage in the hydraulic power branch (7) and also supplies pressure to the mechanical power branch, via a controller (11), for activation of the shifting elements (13);
- wherein a damping apparatus (3) is located between the pressure source (1) and the hydraulic power branch (7), and the damping apparatus (3) comprises a volume expansion.
Dependencies are inferred from the claim text.