FOUR-STROKE ICE CRANKSHAFT Russian patent published in 2012 - IPC F16C3/10 F16C3/12 

FIELD: engines and pumps.

SUBSTANCE: invention relates to machine building and may be used in engine production. Proposed crankshaft comprises tip 1, rod and main journals 4, 2, webs 5, 12, counterweights and shank 10. Proposed collapsible shaft has no internal oil channel. Said rod and main journals are made from high-hardness material and shaped to hollow cylinders with antifriction bearings 3, 7 fitted therein. Journal edges has key slots for reliable attachment in webs 5, 12. Webs 5, 12 and counterweights are made from aforesaid high-hardness material and shaped to figured plates with holes provided with key slots. Con-rods are secured to bearings 3, 7 by covers 8 of crank heads 6 and con-rod crank head 6.

EFFECT: reduced friction, longer life, simplified production and assembly.

3 dwg