PURPOSE: To control the amount of the suction system secondary air which is supplied at the engine deceleration corresponding to the engine cooling water temperature or the atmospheric air pressure.

CONSTITUTION: The three openings 15aW15c are arranged in parallel to the air passage 8 and one ends of three levers 16aW16c which are sucked in by the cores 13aW13c are fixed in the inner casing 14 that surrounds the holding body 11. On the other ends of the levers 16aW16c, the valve bodies 17aW17c which open or close the openings 15aW15c and which are made of the elastic material such as rubber are fixed. The controller 40 which receives the signals from the temperature sensor 20 and the air pressure sensor 30 is provided. Being so constituted, the multi number of openings 15aW15c are opened by the changes in the water tmperature or the air pressure, and air is supplied to the suction pipe 102 through the openings 15aW15c while the valve body 6 stays open.