PURPOSE: To restrain the vibration of the engine and simplify the construction thereof by a method wherein a weight, regulating a combustion fluid by a inertia force corresponding to the vibration of the engine, and a recirculation control valve, adjusting the fluid path of the combustion fluid, are provided in the device.
CONSTITUTION: When the engine 1 is vibrating, the weight 16 is operated into a direction to open a valve body 17 and air is introduced into the vacuum chamber 6d of the recirculation control valve 6 through an air releasing path 15. According to this operation, the recirculation control valve 6 is closed and the amount of recirculated exhaust gas is reduced and regulated, therefore, the vibration of the engine may be restrained. At this time, the operation of the valve body 17 is delayed by a delay device 22 (orifice 21) and is effected slowly, therefore, surging phenomenon will never be caused. Thus, the control to obtain the stable combustion condition of the engine 1 may be effected smoothly and properly.
IIDA KATSUYOSHI
MATSUMOTO TOKUICHI
