The invention discloses a novel method for constructing a torsional vibration damper where the spring damper system is aligned axially with the axis of the device, and it is put into compression by axially reducing its width and simultaneously preventing radial expansion. The assembly of the torsional vibration damper occurs in two progressive controlled stages by torquing a set of fasteners, thereby minimizing the shear strain on the elastomer during assembly, enhancing structural robustness, modally stability, and serviceability in the field.

The invention discloses a novel method for constructing a torsional vibration damper where the spring damper system is aligned axially with the axis of the device, and it is put into compression by axially reducing its width and simultaneously preventing radial expansion. The assembly of the torsional vibration damper occurs in two progressive controlled stages by torquing a set of fasteners, thereby minimizing the shear strain on the elastomer during assembly, enhancing structural robustness, modally stability, and serviceability in the field.

Disclosed is an apparatus and method for operating vehicular accessories during an engine stop using a one-way clutch pulley, the apparatus including the one-way clutch pulley configured to drive the vehicular accessories, and including a coupler and a one-way clutch. The one-way clutch pulley includes an engine crank shaft configured to connect to an engine of a vehicle; the coupler configured to couple with the engine crank shaft; the one-way clutch configured to couple with the coupler; and a pulley configured to connect to the one-way clutch, and the one-way clutch is configured to connect to the pulley and to rotate in one direction.

Disclosed is an apparatus and method for operating vehicular accessories during an engine stop using a one-way clutch pulley, the apparatus including the one-way clutch pulley configured to drive the vehicular accessories, and including a coupler and a one-way clutch. The one-way clutch pulley includes an engine crank shaft configured to connect to an engine of a vehicle; the coupler configured to couple with the engine crank shaft; the one-way clutch configured to couple with the coupler; and a pulley configured to connect to the one-way clutch, and the one-way clutch is configured to connect to the pulley and to rotate in one direction.

A pulley block may include an alpha pulley block including an alpha connector, a beta pulley block including a beta connector, wherein the alpha pulley block is coupled to the beta pulley block when the alpha connector is coupled to the beta connector. At least one of the alpha connector and the beta connector may comprise magnets.

A pulley block may include an alpha pulley block including an alpha connector, a beta pulley block including a beta connector, wherein the alpha pulley block is coupled to the beta pulley block when the alpha connector is coupled to the beta connector. At least one of the alpha connector and the beta connector may comprise magnets.

A structure for belt installation of an engine for a vehicle is provided. The structure includes a damper pulley that is mounted to a crankshaft of the engine and a stretch belt that has a first end mounted on the damper pulley and a second end connected to an upper portion of a pulley portion of an accessory. The accessory is mounted on the engine at a position spaced apart from the damper pulley. The pulley portion includes a guide member on a front center thereof which guides installation of the stretch belt to the pulley portion.

A structure for belt installation of an engine for a vehicle is provided. The structure includes a damper pulley that is mounted to a crankshaft of the engine and a stretch belt that has a first end mounted on the damper pulley and a second end connected to an upper portion of a pulley portion of an accessory. The accessory is mounted on the engine at a position spaced apart from the damper pulley. The pulley portion includes a guide member on a front center thereof which guides installation of the stretch belt to the pulley portion.

Provided is a power steering apparatus capable of reducing a maximumly generated stress on an output pulley. An output pulley of a power steering apparatus includes a fastening target portion around a screw insertion hole of a hub portion. When a boundary portion between the hub portion and a winding and hanging portion is defined to be a portion where a minor angle, among relative angles formed between a tangential line of an inner surface of the output pulley and a rotational axis of a nut in an axial cross section of the output pulley that passes through the rotational axis of the nut, gradually reduces from a nut-rotational-axis side toward a radially outer side to then reach 45 degrees, the fastening target portion is a region that is located on an inner side in a radial direction with respect to the boundary portion and overlaps a head portion of a screw in a radial direction of the screw.

Provided is a power steering apparatus capable of reducing a maximumly generated stress on an output pulley. An output pulley of a power steering apparatus includes a fastening target portion around a screw insertion hole of a hub portion. When a boundary portion between the hub portion and a winding and hanging portion is defined to be a portion where a minor angle, among relative angles formed between a tangential line of an inner surface of the output pulley and a rotational axis of a nut in an axial cross section of the output pulley that passes through the rotational axis of the nut, gradually reduces from a nut-rotational-axis side toward a radially outer side to then reach 45 degrees, the fastening target portion is a region that is located on an inner side in a radial direction with respect to the boundary portion and overlaps a head portion of a screw in a radial direction of the screw.