Patent ID: 8720394
Filing Date: 2014-05-13
Classification: F02B,F16C

Abstract:
1. A variable compression ratio (VCR) apparatus with dual eccentric links, that is mounted on an engine, receives a combustion power of a fuel-air mixture from a piston to rotate a crank shaft and changes a compression ratio of the fuel-air mixture the VCR apparatus comprising: a connecting rod having a large end portion formed at one end thereof, which is connected to the crank shaft to receive a torque of the engine, and a small end portion formed at the other end thereof, the small end portion having a coupling hole formed therein; a pair of eccentric links having one ends coupled to the coupling hole from both sides facing each other and integrally rotating; and an eccentric rod connected to the other ends of the eccentric links and rotating within a predetermined angle range; wherein one eccentric link comprises an insertion protrusion provided at one end thereof and having a through-hole formed therein such that a piston pin of the piston is eccentrically inserted into the insertion protrusion, and the other eccentric link comprises a plurality of attachment protrusions provided at one end thereof such that the attachment protrusions fit into an outer circumferential surface of the insertion protrusion.