Patent ID: 6895912

Claim:
A variable valve control apparatus for an engine provided with two intake valves and two exhaust valves for each cylinder, comprising: a variable valve mechanism that varies a lift characteristic of one of said two exhaust valves; an operating condition detector that detects an operating condition of said engine; and a control unit that receives a detection signal from said operating condition detector to control said variable valve mechanism, wherein said control unit controls said variable valve mechanism to set a valve overlap period within which only one of said two exhaust valves is opened, by synchronizing opening timings of said two exhaust valves with each other, and differentiating closing timings of said two exhaust valves from each other, and wherein said valve overlap period within which only one of said two exhaust valves is opened, is set by opening said intake valves synchronously with a closing timing of the one exhaust valve, and thereafter closing the other exhaust valve, when the operating condition of the engine is a specific operating condition.