Abstract: A piston for an internal combustion engine is formed from an upper part connected to a lower part. The upper part has a combustion bowl, a top land, and a ring belt extending circumferentially around the piston upper part. The lower part contains pin bosses and a piston skirt. A circumferential cooling channel is formed by joining the upper and lower parts. There is an oil inlet formed in one piece with the piston lower part. The inlet has a lower extremity and an upper extremity that terminates at the floor of the cooling channel. A bore extends through the oil inlet from the lower extremity up though the floor of the cooling channel. The circumference of the bore increases from the upper extremity to the lower extremity, so the oil inlet forms a funnel shape.

Abstract: A piston for an internal combustion engine is formed from an upper part connected to a lower part. The upper part has a combustion bowl, a top land, and a ring belt extending circumferentially around the piston upper part. The lower part contains pin bosses and a piston skirt. A circumferential cooling channel is formed by joining the upper and lower parts. There is an oil inlet formed in one piece with the piston lower part. The inlet has a lower extremity and an upper extremity that terminates at the floor of the cooling channel. A bore extends through the oil inlet from the lower extremity up though the floor of the cooling channel. The circumference of the bore increases from the upper extremity to the lower extremity, so the oil inlet forms a funnel shape.

Abstract: A piston for an internal combustion engine is disclosed. The piston includes an upper surface configured to at least partly face a cylinder head of the internal combustion engine. The upper surface includes a combustion bowl surface, and a squish face having an internal edge disposed a first distance from the longitudinal axis along a radial direction. The combustion bowl surface includes a planar surface extending radially outward from the longitudinal axis of the piston, a first concave surface disposed outside the planar surface in the radial direction, the first concave surface having a first radius of curvature, and a second concave surface disposed outside the first concave surface in the radial direction, the second concave surface having a second radius of curvature, the second radius of curvature being smaller than the first radius of curvature.

Abstract: A piston for an internal combustion engine is disclosed. The piston includes an upper surface configured to at least partly face a cylinder head of the internal combustion engine. The upper surface includes a combustion bowl surface, and a squish face having an internal edge disposed a first distance from the longitudinal axis along a radial direction. The combustion bowl surface includes a planar surface extending radially outward from the longitudinal axis of the piston, a first concave surface disposed outside the planar surface in the radial direction, the first concave surface having a first radius of curvature, and a second concave surface disposed outside the first concave surface in the radial direction, the second concave surface having a second radius of curvature, the second radius of curvature being smaller than the first radius of curvature.

Abstract: A ball joint for different applications in special car suspension is disclosed. The ball joint includes a pin (1) with a first end for fixing in a counterpart, and a second spherical end (2),that is encased in a bearing (3) of consequently spherical internal profile, that by its turn is mounted in the internal area of a housing (4), whose external area is intended for fixing in a second counterpart. The housing (4) is closed over a retaining ring (5), that by its turn presses the bearing (3) and the pin (1), in such a way as to prevent axial or radial moving between the parts, including the dismounting of the assembly, but allowing rotational and oscillatory movements required for the operation of the assembly. Further, the retaining ring (5) supports the external (6) and the internal (7) sealings, preferably vulcanized, both of the area between the retaining ring (5) and the housing (4) and of the area between the retaining ring (5) and the pin (1).

Abstract: A ball joint for different applications in special car suspension is disclosed. The ball joint includes a pin (1) with a first end for fixing in a counterpart, and a second spherical end (2), that is encased in a bearing (3) of consequently spherical internal profile, that by its turn is mounted in the internal area of a housing (4), whose external area is intended for fixing in a second counterpart. The housing (4) is closed over a retaining ring (5), that by its turn presses the bearing (3) and the pin (1), in such a way as to prevent axial or radial moving between the parts, including the dismounting of the assembly, but allowing rotational and oscillatory movements required for the operation of the assembly. Further, the retaining ring (5) supports the external (6) and the internal (7) sealings, preferably vulcanized, both of the area between the retaining ring (5) and the housing (4) and of the area between the retaining ring (5) and the pin (1).