FIELD: mechanical engineering; carburetor internal combustion engines of all types. SUBSTANCE: device can be installed in vehicles which are in service and in engines of power plants. Device for preparation of fuel-air mixture in internal combustion engine has net installed under carburetor over inlet hole of engine intake manifold. Device is of convex shape. Net has two or more layers. Summary area of meshes of each layer is either equal to or exceeds area of cross-section of carburetor outlet hole. Edges of device are either soldered over or lined with heat-, gasoline-, and oil-resistant material by press fitting. EFFECT: improved performance and ecological characteristics of engine main units and assemblies at minimum cost. 2 dwg
