VARIABLE COMPRESSION RATIO DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To surely control a rotation position of an eccentric sleeve in a desired rotation position.SOLUTION: An eccentric sleeve 11 is rotated by an actuator 12 supplying and delivering hydraulic pressure to a hydraulic chamber 13 through a vane 17, positions of a supporting hole of a large end 6 and a crank pin 5 are made eccentric from each other, and a movement state of a piston is switched to a high compression ratio state or a low compression ratio state.