PISTON OF AN INTERNAL COMBUSTION ENGINE

摘要

A piston of an internal combustion engine is disclosed. The piston may have a piston sleeve with a centre axis and a piston base with a diameter D delimiting the piston sleeve at a top of the piston sleeve. The piston base may have a piston base rim of width b and a piston bowl with a depth t. The piston bowl may be designed as a pot bowl, which may have a piston bowl base and a piston bowl wall with a maximum diameter d4 adjoining the piston bowl base. The piston bowl may have an opening cross-section aligned symmetrically relative to the centre axis. The opening cross-section may have a minimum diameter da, which is smaller than the diameter d4. A flow cut-off edge designed as a nose may be formed in the opening cross-section and may project in the radial direction inwards over the piston bowl wall.

主权项

1. A piston of an internal combustion engine, comprising:
a piston sleeve with a centre axis; and a piston base with a diameter D delimiting the piston sleeve at the top, wherein the piston base includes a piston base rim of a width b and a piston bowl with a depth t; wherein the piston bowl is designed as a pot bowl and has a piston bowl base and a piston bowl wall with a diameter d4 adjoining the piston bowl base, the piston bowl having an opening cross-section which is aligned symmetrically relative to the centre axis, the cross-section having a diameter da which is smaller than the diameter d4; wherein a flow cut-off edge having the diameter da and designed as a nose is formed in the opening cross-section, wherein the nose projects inwards radially over the piston bowl wall; and wherein a first transition wall between the piston base rim and the flow cut-off edge is formed by has a radius Ro and the flow cut-off edge has a second transition wall in a boundary zone g disposed between the nose and the piston bowl wall, the second transition wall having a radius Ru wherein a tangential transition is provided between the radius Ro and the radius Ru.