FIELD: engine engineering. SUBSTANCE: false-webs 6 serves for increasing the coefficient of charge. The false-webs are made up as covers rigidly secured to the faces of webs 4 of crankshaft 4 facing connecting rod 2. The covers enclose the webs over the outer diameter resulting in significant decreasing of the crank chamber volume and increasing compression ratio of the fuel-air mixture. Openings for the crank pin are made in false-webs 6. Dummy hollows are made in webs 4 of crankshaft 3. The hollows and the false-webs define spaces. The contour of the opening for pin 5 of the crank in each of the false- webs and the contour of the hollow are intersect to define the through slot. As a result, the dummy space of each of the webs is in communication with the space of the crank chamber. EFFECT: enhanced longevity and decreased weight. 1 cl, 3 dwg
