Patent ID: 9745873
Date: 2017-08-29
CPC Classifications: F01L

Claim:
1. A multiple variable valve lift apparatus, comprising: a camshaft rotating to open and close valves; at least two cam portions disposed on an exterior circumference of the camshaft and including a high cam and a normal cam, the at least two cam portions moving in an axial direction of the camshaft and rotating together with the camshaft; a cylinder deactivation device connected to the valves and configured to perform a lever motion by one of the high cam or the normal cam, the cylinder deactivation device being operated by hydraulic pressure to selectively realize zero valve lift; at least two lift operating portions disposed on an exterior circumference of the camshaft, the at least two operating portions moving in the axial direction of the camshaft to move the at least two cam portions in the axial direction of the camshaft; an operation control portion selectively moving the at least two lift operating portions in the axial direction of the camshaft; a pin attached to the operation control portion; and a guide rail formed in a groove of an exterior circumference of each of the operating portions, such that the pin is inserted into the guide rail to guide the pin as the camshaft and the at least two lift operating portions rotate and to move the at least two lift operating portions in the axial direction of the camshaft by the pin, wherein the at least two lift operating portions move according to the pin of the operation control portion, wherein the operation control portion includes a solenoid and a pin operator, and wherein the pin operator includes a housing, a hinge unit, a first pin, a second pin, and a pin fixing unit.