Patent ID: 9074499
Filing Date: 2015-07-07
Classification: F01L

Abstract:
1. A multiple variable valve lift apparatus comprising: a camshaft; a plurality of cams slidably fitted on the camshaft and each having a cam base with a guide groove and a cam lobe; a solenoid valve including an actuating rod capable of being selectively inserted into the guide groove of a cam in the plurality of cams; and a valve opening/closing unit capable of selectively coming in contact with any cam in the plurality of cams, wherein the plurality of cams, the solenoid valve, and the valve opening/closing unit constitute one variable valve unit, and two variable valve units are provided for one or each cylinder, and wherein the guide groove of one or each cam in the variable valve unit is formed at an angle to connect the cam bases of adjacent cams, and the guide groove includes an operation guide groove to move the cam in one direction and a reverse guide groove to move the cam in an opposite direction.