PISTON UNIT WITH RECIPROCATING MOTION Russian patent published in 2017 - IPC F02B41/04 F02B75/04 

FIELD: engines and pumps.

SUBSTANCE: piston unit (1) with reciprocating motion comprises a crankcase (15) and a crankshaft (2) which has a crank pin (4). The crankshaft (2) rests on the crankcase (15) and rotates about the axis (5). The unit additionally comprises a connecting rod (9) which has a large end (8) and a small end (10), a piston (11) attached for rotation to the small end (10) and a crank-type element (6) mounted for rotation at the crank pin (4). The crank-type element (6) comprises a bearing block (7) containing an outer circumferential wall which holds the large end (8) of the connecting rod (9) so that the connecting rod (9) is mounted for rotation at the bearing block (7) of the crank-type element ( 6) via its large end (8). The crank-type element (6) comprises a gear wheel (12) which is an external gear wheel and is engaged at least with the intermediate gear wheel (13). The intermediate gear wheel (13) is an external gear wheel and is engaged with the auxiliary gear wheel (14). The auxiliary gear wheel (14) is an external gear wheel and is fixed to the auxiliary shaft (16) which passes concentrically through the crankshaft (2). The crankshaft (2) and the auxiliary shaft (16) are positioned for rotation about each other.

EFFECT: simplified design and reduced size of the device.

10 cl, 26 dwg