FIELD: mechanical engineering; engines operating on liquid and gaseous fuels. SUBSTANCE: proposed system has mixer connected with gas bottle by gaseous fuel supply pipe and liquid fuel carburetor installed between intake manifold and air filter. According to invention, mixer is made in form of spacer with two through holes of similar size and coaxial with holes of carburetor mixing chambers. Spacer is installed between carburetor and intake manifold. Channels in form of tangential grooves connected with ring grooves around through holes are laid to hole edges. Through holes are connected with gaseous fuel control and feed valve through channel inside spacer and feed union connected with channel to which pipeline is connected. Electromagnet core is rigidly secured on housing of gaseous fuel control and feed valve. Core is coupled with feed valve installed inside housing and located square to L-shaped channel inside housing. Feed valve is coupled with adjusting installed for changing section if L- shaped channel. EFFECT: improved quality of mixing, performance and ecological characteristics of engine as to liquid fuel consumption, improved reliability of system. 1 dwg
