Back to results
US 7,028,820 B2Granted
Hydrodynamic clutch arrangement with a clutch device inside the clutch housing
AssigneeZF Friedrichshafen AG
InventorsHerbert Johann, Herbert Schmid, Fritz Leber
Life of this patent
Estimating the term…
Abstract
A hydrodynamic clutch arrangement is provided with at least a pump wheel and a turbine wheel to form a hydrodynamic circuit in a clutch housing, the drive-side wall of the housing being connected on the side facing the drive unit, such as an internal combustion engine, to the drive unit, a clutch device being provided to bring the housing into or out of working connection with the pump wheel. The clutch device is located inside the clutch housing.
Claims31
A hydrodynamic clutch arrangement comprising:
- a clutch housing having a drive-side wall for connecting to a drive unit and a takeoff-side wall for connecting to a gearbox;
- a pump wheel in the housing;
- a turbine wheel in the housing, the turbine wheel and the pump wheel forming a hydrodynamic circuit in the housing;
- and
- a clutch device located inside the housing, the clutch device bringing the housing into and out of working connection with the pump wheel, wherein the clutch device comprises a separating wall having a first side facing the hydrodynamic circuit and a second side facing the takeoff-side wall of the housing, a control chamber between the second side and the takeoff-side wall, and a first control line connected to a pressure supply system, wherein the hydrodynamic circuit has a prevailing pressure and the pressure supply system selectively supplies the control chamber with a control pressure which is essentially the same as the prevailing pressure.
2 more elements
A hydrodynamic clutch arrangement comprising:
- a clutch housing having a drive-side wall for connecting to a drive unit and a takeoff-side wall for connecting to a gearbox;
- a pump wheel in the housing;
- a turbine wheel in the housing, the turbine wheel and the pump wheel forming a hydrodynamic circuit in the housing;
- a clutch device located inside the housing, the clutch device bringing the housing into and out of working connection with the pump wheel, wherein the clutch device comprises a separating wall formed by a clutch piston which is not rotatable with respect to the housing, the separating piston having a first side facing the hydrodynamic circuit and a second side facing the takeoff-side wall of the housing, the clutch device further comprises a control chamber between the second side and the takeoff-side wall, and a first control line connected to a pressure supply system, wherein the clutch piston comprises at least one seal for sealing the hydrodynamic circuit from the control chamber and the seal allows a predetermined residual leakage between the hydrodynamic circuit and the control chamber.
1 more element
A hydrodynamic clutch arrangement comprising:
- a clutch housing having a drive-side wall for connecting to a drive unit and a takeoff-side wall for connecting to a gearbox;
- a pump wheel in the housing;
- a turbine wheel in the housing, the turbine wheel and the pump wheel forming a hydrodynamic circuit in the housing;
- a clutch device located inside the housing, the clutch device bringing the housing into and out of working connection with the pump wheel, wherein the clutch device comprises a separating wall formed by a clutch piston which is not rotatable with respect to the housing and having a first side facing the hydrodynamic circuit and a second side facing the takeoff-side wall of the housing, a control chamber between the second side and the takeoff-side wall, and a first control line connected to a pressure supply system;
- and
- at least one friction surface which can be urged toward the takeoff-side housing wall by the clutch piston, the at least one friction surface acting as a seal between the hydrodynamic circuit and the control chamber.
3 more elements
Dependencies are inferred from the claim text.