DEVICE FOR REDUCING THE EMISSION OF POLLUTION RESPONSIBLE PRODUCTS BY EXTERNAL CARBURATION ENGINES DURING THE DECELERATION PERIODS

摘要

A device for reducing the amount of noxious products in the exhaust gases of a car engine during de deceleration periods thereof, including in combination means for completely suppressing the supply of carburetted air to the engine during the decelerations and means for introducing into each cylinder, during each deceleration period, a stream of non -carburetted air through a duct separate from the inlet pipe and which opens in the latter in the vicinity of the inlet valve head.