FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: proposed internal combustion engine has spherical block, heads, and round pistons installed along shaft. Shaft is arranged in center of ball in bearing holes for rotary reciprocation. Each head is secured by its spherical surface on spherical surface of cylinder. Oil is pressure - fed to rings of each head and is removed along channels made in engine and head. EFFECT: increased service life of engine. 9 dwg
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