PISTON WITH AUTOMATICALLY CONTROLLED COMPRESSION RATIO FOR INTERNAL COMBUSTION ENGINE Russian patent published in 1994 - IPC

FIELD: engine engineering. SUBSTANCE: bosses of a piston are provided with a rectangular groove. Lesser sides of the groove are provided with hollows at their centers. Grooves for stop plates are provided near axis of outer faces. Hollows for projections of detachable plates are provided on grater sides on outer faces at center part. The piston is coupled with pins having four flats in two parallel planes through working (plate-type and provided with springs wound from a wire having rectangular cross- section and positioned within them) and safety springs and movable slides (e.g. made of bronze) having rectangular collar as a lengthening of sliding planes. The planes of the slides and flats of the piston pin engage with piston through detachable plates (e.g. made of still) having bent projection in the middle part. Thickness of the plates exceed depth of the flat of the piston pin. The pin, detachable plates and slides are fixed with stop spring plates. EFFECT: improved design. 3 cl, 3 dwg