PISTON WITH ELASTICALLY DEFORMABLE BOTTOM Russian patent published in 2016 - IPC F02F3/00 F02B75/04 F02D15/04 

FIELD: engines and pumps.

SUBSTANCE: piston of internal combustion engine includes head (1) with bottom and grooves (2) for installation of piston rings, skirt (3) and lugs (4) with holes (5) for piston pin. Piston bottom is made up of cylindrical barrel (7) with elastically deformable wavy bottom (8) of highly heat-resistant relaxation resistant spring material. At lower zone of sleeve (7) shaped thrust washer (9) is installed and rigidly fixed. Inside cylinder cartridge (7) there is conical spring (11) from heat-resistant relaxation resistant spring material. Spring (11) with its upper end face thrusts against poroelastic wavy bottom (8) of sleeve (7). Spring (11) with its lower end rests on shaped support washer (9). Spring (11) is pressed by shaped thrust washer (9) to poroelastic wavy bottom (8) sleeve (7) on such length, at which deformation of poroelastic wavy bottom (8) sleeve (7) of bottom starts at moment of sharp increase of pressure of combustion products of working mixture in combustion chamber at beginning of second main phase of combustion. Inside piston head (1) there is cylindrical cavity (6) aligned with axis of piston, in which bottom is tightly installed.

EFFECT: higher completeness of fuel combustion due to additional turbulization of fuel charge.

1 cl, 3 dwg