DEVICE FOR VARYING CRANK RADIUS OF CRANK MECHANISM Russian patent published in 2016 - IPC F02B75/04 F02D15/02 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly to piston machines. Crank mechanism, containing crankshaft consisting of crankshaft necks and crank pins, connected by crankshaft webs, characterized by the fact that crankshaft webs have guide slots, where steady bushes of the crank pins are installed, rings are placed near the crankshaft webs on crank pins, rings are in contact with additional rings, two rings are installed inside the main ring, which is located inside the guide ring, the auxiliary ring is installed between the main and guide rings, guide ring is arranged in the housing guide slots and rests on the assembly of said ring movement and fixation. Crank radius varying from zero to maximum value enables reaching full operation mode of pistons machines with low starting torque.

EFFECT: disconnecting some pistons from the crankshaft, at simultaneous disconnecting the fuel supply, enables using the piston machine with power save mode under various operating conditions; easier engine starting conditions in winter period.

1 cl, 4 dwg