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US 11,802,559 B2Granted
Vane pump
AssigneeZF Friedrichshafen AG
InventorFlorian Pöhnlein
Life of this patent
Estimating the term…
Abstract
A vane pump (101) for an automatic transmission includes a suction-side behind-vane pressure duct (112) and a pressure-side behind-vane pressure duct (111). The suction-side behind-vane pressure duct (112) is connected to the pressure side (116) of the vane pump (1). A valve device (113, 114) is connected to the pressure-side behind-vane pressure duct (111). During operation of the vane pump (101), a pressure-side behind-vane pressure (p DH) can be set in the pressure-side behind-vane pressure duct (111) with the valve device (113, 114).
Claims20
A vane pump (101) for an automatic transmission, comprising:
- a suction-side behind-vane pressure duct (112) connected to a pressure side (116) of the vane pump (101);
- a pressure-side behind-vane pressure duct (111);
- and
- a valve unit (113, 114, 213, 214, 313, 314, 413, 414) connected to the pressure-side behind-vane pressure duct (111),
- wherein, during the operation of the vane pump (101), a level of a pressure-side behind-vane pressure (pDH) in the pressure-side behind-vane pressure duct (111, 211, 311, 411) is adjustable with the valve unit (113, 114, 213, 214, 313, 314, 413, 414),
- wherein the valve unit (113, 114) is arranged between the pressure-side behind-vane pressure duct (111) and the suction-side behind-vane pressure duct (112),
- wherein the valve unit (113, 114) has a variable hydraulic resistance, and
- wherein the hydraulic resistance of the valve unit (113, 114, 213) is adjustable with an electronic transmission control unit (140).
5 more elements
A vane pump (101) for an automatic transmission, comprising:
- a suction-side behind-vane pressure duct (112) connected to a pressure side (116) of the vane pump (101);
- a pressure-side behind-vane pressure duct (111);
- and
- a valve unit (113, 114, 213, 214, 313, 314, 413, 414) connected to the pressure-side behind-vane pressure duct (111),
- wherein, during the operation of the vane pump (101), a level of a pressure-side behind-vane pressure (pDH) in the pressure-side behind-vane pressure duct (111, 211, 311, 411) is adjustable with the valve unit (113, 114, 213, 214, 313, 314, 413, 414),
- wherein the valve unit (113, 114) is arranged between the pressure-side behind-vane pressure duct (111) and the suction-side behind-vane pressure duct (112),
- wherein, at least in a first operating condition, the valve unit (413, 414, 418, 412) is configured for hydraulically disconnecting at least one first behind-vane pressure duct (412) from a pressure region (417) of the pump and for connecting at least one second behind-vane pressure duct (411) to a non-pressurized region (419), and
- wherein, in a second operating condition, the valve unit (413, 414, 418, 412) is configured for connecting the at least one first behind-vane pressure duct (412) to the pressure region (417) of the vane pump.
5 more elements
A vane pump (101) for an automatic transmission, comprising:
- a suction-side behind-vane pressure duct (112) connected to a pressure side (116) of the vane pump (101);
- a pressure-side behind-vane pressure duct (111);
- and
- a valve unit (113, 114, 213, 214, 313, 314, 413, 414) connected to the pressure-side behind-vane pressure duct (111),
- wherein, during the operation of the vane pump (101), a level of a pressure-side behind-vane pressure (pDH) in the pressure-side behind-vane pressure duct (111, 211, 311, 411) is adjustable with the valve unit (113, 114, 213, 214, 313, 314, 413, 414),
- wherein the valve unit (113, 114) is arranged between the pressure-side behind-vane pressure duct (111) and the suction-side behind-vane pressure duct (112), and
- wherein the valve unit comprises a pressure control valve (418) for adjusting the pressure-side behind-vane pressure (pDH) and a shut-off valve (421) for disconnecting and connecting the suction-side behind-vane pressure duct (412) to the pressure side (417) of the vane pump, the shut-off valve (421) being a directional valve.
4 more elements
A vane pump (101) for an automatic transmission, comprising:
- a suction-side behind-vane pressure duct (112) connected to a pressure side (116) of the vane pump (101);
- a pressure-side behind-vane pressure duct (111);
- a check valve (214, 314) arranged between the pressure-side behind-vane pressure duct (211, 311) and the suction-side behind-vane pressure duct (212, 312), the check valve (214, 314) configured to restrict a flow direction to only from the suction-side behind-vane pressure duct (212, 312) to the pressure-side behind-vane pressure duct (211, 311);
- and
- a valve unit (113, 114, 213, 214, 313, 314, 413, 414) connected to the pressure-side behind-vane pressure duct (111),
- wherein, during the operation of the vane pump (101), a level of a pressure-side behind-vane pressure (pDH) in the pressure-side behind-vane pressure duct (111, 211, 311, 411) is adjustable with the valve unit (113, 114, 213, 214, 313, 314, 413, 414),
- wherein the valve unit (113, 114) is arranged between the pressure-side behind-vane pressure duct (111) and the suction-side behind-vane pressure duct (112),
- wherein the valve unit (113, 114) has a variable hydraulic resistance, and
- wherein the valve unit is a pressure limiting valve (213, 513), and the pressure limiting valve (213, 513) is arranged such fluid is flowable through the pressure limiting valve (213, 513) from the pressure-side behind-vane pressure duct (211, 511) to the suction-side behind-vane pressure duct (212, 512).
6 more elements
A vane pump (101) for an automatic transmission, comprising:
- a suction-side behind-vane pressure duct (112) connected to a pressure side (116) of the vane pump (101);
- a pressure-side behind-vane pressure duct (111);
- a check valve (214, 314) arranged between the pressure-side behind-vane pressure duct (211, 311) and the suction-side behind-vane pressure duct (212, 312), the check valve (214, 314) configured to restrict a flow direction to only from the suction-side behind-vane pressure duct (212, 312) to the pressure-side behind-vane pressure duct (211, 311);
- and
- a valve unit (113, 114, 213, 214, 313, 314, 413, 414) connected to the pressure-side behind-vane pressure duct (111),
- wherein, during the operation of the vane pump (101), a level of a pressure-side behind-vane pressure (pDH) in the pressure-side behind-vane pressure duct (111, 211, 311, 411) is adjustable with the valve unit (113, 114, 213, 214, 313, 314, 413, 414),
- wherein the valve unit (113, 114) is arranged between the pressure-side behind-vane pressure duct (111) and the suction-side behind-vane pressure duct (112),
- wherein the valve unit (113, 114) has a variable hydraulic resistance, and
- wherein the valve unit is a pressure control valve (313), and the pressure control valve (313) is arranged such that fluid is flowable through the pressure control valve (313) from the pressure-side behind-vane pressure duct (311) to the suction-side behind-vane pressure duct (312).
6 more elements
Dependencies are inferred from the claim text.