Patent ID: 7950359

Claim:
A variable valve system for use in an engine comprising a plurality of valves, the system comprising: a variable valve lifter for changing a first lift amount of one or more of the valves at a predetermined engine speed; a variable valve timing portion for controlling opening and closing timing of one or more of the valves; and a cylinder deactivation portion that changes a second lift amount of two or more of the valves in an alternating pattern; wherein the cylinder deactivation portion comprises a first cylinder deactivation portion in a first cylinder group, and a second cylinder deactivation portion in a second cylinder group; wherein the system is configured to alternatively perform a first mode and a second mode; wherein the first mode comprises the first cylinder deactivation portion being operated and the second cylinder deactivation portion not being operated; and wherein the second mode comprises the first cylinder deactivation portion not being operated and the second cylinder deactivation portion being operated; and wherein a first control shaft is provided along the first cylinder group, a second control shaft is provided along the second cylinder group, and the first control shaft and the second control shaft are rotated by control motors.