The variable valve device and a valve opening amount adjustment method

It relates variable valve device and valve opening amount adjustment method, a precisely controllable the strength of the air amount and swirl flow in the cylinder. Variable valve apparatus of the present invention, a valve operating mechanism capable of forming a dual valve variable state be continuous or multi-variable first valve and opening of both of the second valve of the same type provided in the same cylinder equipped with a. During the minimum opening amount of the dual valve variable control state, as the amount of opening of the first valve is larger than the amount of opening of the second valve, the difference in the amount of opening of both valves is provided. Further, the amount of opening of the first valve is adjusted so as to be aligned between the cylinders at the time of the minimum opening amount.