Correcting device for the combustion of engines of vehicles during transitional phases of operation

A device for correcting the combustion of internal combustion engines which are subjected to frequent changes in speed of rotation and loads, in particular automobile engines, each internal combustion engine having an intake manifold for directing a mixture of air and fuel to an engine comprising a first sealed chamber directly connected to said intake manifold, a second sealed chamber separated from the first chamber by a diaphragm having a neutral position, said second chamber being connected to the first chamber, through passage means for delaying transmission of pressure variations from the first chamber to the second chamber, control means for reducing the fuel to air ratio of said air and fuel mixture, said control means being coupled to said diaphragm for activation by said diaphragm whenever the differential pressure between the second and first chambers exceeds a first predetermined value and also whenever the differential pressure between the first and second chambers exceeds a second predetermined value, whereby the fuel to air ratio is reduced during acceleration and deceleration transitory phrases of the engine.