Patent ID: 7987825
Filing Date: 2011-08-02
Classification: F01L

Abstract:
1. A variable valve lift apparatus comprising: an outer body connected with a valve for opening and closing the valve; an inner body that is reciprocally disposed within the outer body and contacts a first input cam configured to an input shaft; a lost motion spring disposed between the outer body and the inner body; a connecting portion selectively connecting the outer body and the inner body; a hydraulic pressure supplying portion supplying hydraulic pressure to the connecting portion; and a lubrication circuit supplying lubricant to a contacting portion of the first input cam and the inner body; wherein the connecting portion comprises: wherein the hydraulic pressure supplying portion comprises an oil supplying hole formed to the outer body and fluidly communicating with the guide channel of the connecting portion, and wherein the lubrication circuit comprises a first hydraulic line formed in one of the at least a connecting pin and a second hydraulic line formed in a guide of the inner body.