A method of manufacturing a mechanical part of the present invention includes a first process of forming, by performing a folding processing to an end portion of the material, a portion to be processed having a structure, in which a plurality of layers respectively having a thickness corresponding to a plate thickness of a material overlap each other, in the material such that a plate thickness direction of the layer is orthogonal to a plate thickness direction of the material; and a second process of changing, by performing a forging processing to the portion to be processed, a shape of the portion to be processed to a target shape while press-welding the layers of the portion to be processed to each other by plastic deformation.

A core ring for an impeller or turbine of a torque converter is provided. The core ring includes an annular base portion including a convex blade side surface portion and a concave stator side surface portion and a wrapped outer diameter portion including an outwardly extending lip protruding radially outward from the annular base portion. A method of forming a torque core ring for an impeller or turbine of a torque converter is also provided. The method includes forming a wrapped outer diameter portion including an outwardly extending protrusion protruding radially outward from an annular base portion including a convex blade side surface portion and a concave stator side surface portion. A torque converter including the core ring is also provided.

A core ring for an impeller or turbine of a torque converter is provided. The core ring includes an annular base portion including a convex blade side surface portion and a concave stator side surface portion and a wrapped outer diameter portion including an outwardly extending lip protruding radially outward from the annular base portion. A method of forming a torque core ring for an impeller or turbine of a torque converter is also provided. The method includes forming a wrapped outer diameter portion including an outwardly extending protrusion protruding radially outward from an annular base portion including a convex blade side surface portion and a concave stator side surface portion. A torque converter including the core ring is also provided.

A torque converter is provided. The torque converter includes a front cover. The front cover includes a radially extending section and an axially extending section extending axially from an outer radial end of the radially extending section. The torque converter also includes a rear cover. The rear cover includes a rear radially extending section and a rear axially extending section extending axially from an outer radial end of the rear radially extending section. The torque converter also includes a plurality of baffles connected to the front cover. Each of the baffles includes a first tab connected to the axially extending section of the front cover. A method of forming a torque converter is also provided.

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.

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 hydrokinetic torque coupling device comprising an impeller wheel (2) able to hydrokinetically drive a turbine wheel (3) into rotation, with the impeller wheel (2) being rotationally coupled to a cover (5), with the turbine wheel (3) being able to be axially moved between an engaged position and a disengaged position, wherein it comprises an elastically deformable stress overtaking member (25) axially inserted between the turbine wheel (3) and a part (12) of the cover (5), with the stress overtaking member (25) being able to limit the axial displacement of the turbine wheel (3) towards the above-mentioned part (12) of the cover (5), opposite the turbine wheel (3).

A torque converter is provided. The torque converter includes an impeller including an impeller shell, a turbine including a turbine shell and a stator axially between the turbine and the impeller. A first fluid flow is generated between the impeller and the stator and a second fluid flow is generated between the turbine and the stator. The torque converter further includes a thrust bearing axially between the impeller and the stator or axially between the turbine and the stator. The thrust bearing includes a bearing surface arranged for maintaining a hydrodynamic film thereon in a region of the first fluid flow or the second fluid flow during operation of the torque converter. A method of forming a torque converter is also provided.

A tilger for a rotating body includes an annular body movably coupled to a rotatable portion of the rotating body. The tilger includes a spring interposed between the first annular body and the rotatable portion. Rotation of the rotatable portion relative to the annular body is to compress and decompress the spring. The tilger includes a ring positioned on an outer surface of the annular body and configured to expand as a rotational speed of the ring increases to decrease a total inertia of the annular body and the ring applied to the spring.

A tilger for a rotating body includes an annular body movably coupled to a rotatable portion of the rotating body. The tilger includes a spring interposed between the first annular body and the rotatable portion. Rotation of the rotatable portion relative to the annular body is to compress and decompress the spring. The tilger includes a ring positioned on an outer surface of the annular body and configured to expand as a rotational speed of the ring increases to decrease a total inertia of the annular body and the ring applied to the spring.