Piston for compression ignition internal combustion engine, has boss formed in flange to create aerodynamic turbulence at level of input edge of bowl during preparation of fuel-air mixture and combustion

摘要

The piston (5) has a cavity in the form of a bowl (50) that comprises an input edge (51) that has a flange along its periphery. The cavity is located on the upper surface of the piston. A boss (40), e.g. spigot, formed in the flange creates wake-type aerodynamic turbulence at the level of the input edge during preparation of fuel-air mixture and combustion. The axis of rotation of the turbulence is parallel to the axis of the cylinder. cylinder.