Variable compression ratio apparatus

摘要

A variable compression ratio (VCR) apparatus, may include a piston, a connecting rod having one end coupled to the piston through a piston pin so as to transmit a motion of the piston to a crank shaft, a pair of first and second eccentric links having one ends eccentrically connected to the one end of the connecting rod through the piston pin, dual swing links having one ends connected to the other ends of the first and second eccentric links, respectively, so as to pivot the eccentric links with respect to the piston pin, and connecting assembly connecting the one ends of the first and second eccentric links each other.

主权项

1. A variable compression ratio (VCR) apparatus, comprising:
a piston; a connecting rod having one end coupled to the piston through a piston pin to transmit a motion of the piston to a crank shaft; a first eccentric link and a second eccentric link, each having one end eccentrically connected to the one end of the connecting rod through the piston pin; dual swing links, each having one end connected to the other end of the first eccentric link or the other end of the second eccentric link to pivot the eccentric links with respect to the piston pin; and a connecting assembly connecting the one end of the first eccentric link and the one end of the second eccentric link to each other; wherein the connecting rod has an assembling hole formed through the one end thereof, and wherein the connecting assembly includes: a circular boss foamed in the one end of the first eccentric link and protruding to be inserted into the assembling hole; and a plurality of assembling protrusions formed in the one end of the second eccentric link and arranged in a circumferential direction so as to be closely attached to an outer circumference of the boss.