An automobile or other wheeled vehicle includes various hydraulic components, including a hydraulic gearbox, transmission, clutch, and brake energy recovery system. Such hydraulic components supplement or replace traditional mechanical components of the automobile or other wheeled vehicle to improve the overall operational efficiency thereof.

A hydrokinetic torque coupling device comprises a casing, a torque converter, a torsional vibration damper and a lockup clutch disposed within the casing. The torque converter comprises an impeller and a turbine-piston coaxially aligned with the impeller and axially movable toward and away from the casing to position the hydrokinetic torque coupling device into and out of a lockup mode in which the turbine-piston is non-rotatably frictionally coupled to the casing. The torsional vibration damper comprises an input member non-moveably secured to the turbine-piston, a first retainer plate and the elastic members elastically coupling the input member to the first retainer plate. The input member includes an actuating portion configured to actuate the lockup clutch. The lockup clutch is disposed within the casing between the actuating portion of the input member and a cover shell of the casing for frictionally coupling the casing and the turbine-piston.

Methods of repairing a torque converter that enable the continued use of a torque converter and result in a repaired torque converter with a higher-strength and more durable construction. In some examples, a backing ring can be replaced with a replacement backing ring that includes a spline ring for replacing the function of a cover spline ring. In some examples, a method of repairing a torque converter can be improved by providing a replacement backing ring with a radial protrusion for locating the backing ring on the cover, and a method of determining an axial location of the radial protrusion.

A balance module 10 for a clutch comprises a first annular piston part 11, a second annular piston part 12, which is arranged opposite the first piston part 11 in the axial direction and spaced therefrom, at least three spring elements 13 operating in the axial direction, which are arranged axially between the first 11 and the second piston part 12, and a sealing element 14 with at least one radially outwardly directed sealing lip 15, which is attached on the first piston part 11. The spring elements 13, the first 11 and the second piston part 12 are connected to one another in a loss-proof manner, in order to form an integral module 10.

A balance module 10 for a clutch comprises a first annular piston part 11, a second annular piston part 12, which is arranged opposite the first piston part 11 in the axial direction and spaced therefrom, at least three spring elements 13 operating in the axial direction, which are arranged axially between the first 11 and the second piston part 12, and a sealing element 14 with at least one radially outwardly directed sealing lip 15, which is attached on the first piston part 11. The spring elements 13, the first 11 and the second piston part 12 are connected to one another in a loss-proof manner, in order to form an integral module 10.

A lock-up device for a torque converter transmits a torque from a front cover to an input shaft of a transmission. The lock-up device includes a clutch portion, a piston and hydraulic oil leading-out portion. The clutch portion is disposed between the front cover and a turbine, and includes at least one clutch plate. The piston is disposed to be axially movable and presses the at least one clutch plate toward the front cover so as to turn the clutch portion into a torque transmitting state. The hydraulic oil leading-out portion is mounted to a piston-side lateral surface of the front cover, and leads a hydraulic oil residing between the front cover and the piston to an oil discharge channel provided in the input shaft of the transmission by utilizing rotation of the front cover.

A lock-up device for a torque converter transmits a torque from a front cover to an input shaft of a transmission. The lock-up device includes a clutch portion, a piston and hydraulic oil leading-out portion. The clutch portion is disposed between the front cover and a turbine, and includes at least one clutch plate. The piston is disposed to be axially movable and presses the at least one clutch plate toward the front cover so as to turn the clutch portion into a torque transmitting state. The hydraulic oil leading-out portion is mounted to a piston-side lateral surface of the front cover, and leads a hydraulic oil residing between the front cover and the piston to an oil discharge channel provided in the input shaft of the transmission by utilizing rotation of the front cover.

A torque converter includes a front cover, an impeller, an output shaft member, a turbine and a clutch. The turbine includes a turbine shell, a turbine blade, a coupling portion and a piston portion. The turbine shell is supported by the output shaft member. Additionally, the turbine shell slides on the output shaft member in an axial direction. The turbine blade is attached to the turbine shell. The coupling portion extends from the turbine shell toward the front cover. The piston portion extends from the coupling portion in a radial direction. The clutch is disposed between the piston portion and the front cover.

A torque converter includes a front cover, an impeller, an output shaft member, a turbine and a clutch. The turbine includes a turbine shell, a turbine blade, a coupling portion and a piston portion. The turbine shell is supported by the output shaft member. Additionally, the turbine shell slides on the output shaft member in an axial direction. The turbine blade is attached to the turbine shell. The coupling portion extends from the turbine shell toward the front cover. The piston portion extends from the coupling portion in a radial direction. The clutch is disposed between the piston portion and the front cover.

A torque converter includes a front cover, an output shaft member, a piston, a clutch, an impeller, and a turbine. The piston is supported by the output shaft member. The piston slides on the output shaft member in an axial direction. The piston extends in a radial direction. The clutch is disposed between the front cover and the piston. The impeller includes an impeller shell and an impeller blade. The impeller shell is fixed to the front cover. The impeller blade is attached to the impeller shell. The turbine includes a turbine shell, a turbine blade and a connecting portion. The turbine shell is disposed in opposition to the impeller. The turbine blade is attached to the turbine shell. The connecting portion connects the piston and the turbine shell so as to make the piston and the turbine shell unitarily rotatable.