Patent ID: 7631620

Claim:
The mechanism for controlling compression ratio of internal combustion engine, including engine housing, piston, mounted in cylinder and forming combustion chamber, piston rod connected with crankshaft and comprising: crankshaft rotatably installed in control rings, control ring rotatably installed in engine housing rotatably supported and adjusting crankshaft position, bearing for supporting control ring in engine housing, bearing for supporting crankshaft in control ring, each control ring toothed element, control shaft with pinion elements supported in engine housing, each control shaft pinion meshing with respective control ring toothed element, engine power shaft rotatably supported in engine housing, with toothed part constantly meshing with crankshaft toothed part, bearing for supporting engine power shaft, sealing to prevent oil leaking, and engine contamination a piston rod connected at one end to a piston pin and at the other end to a crankshaft through a crankpin.