Abstract
By adding a small quantity of hydrogen in the cylinder, it is possible to use lean mixtures in order to reduce consumption and emissions. Hydrogen is produced in a device on board of the vehicle. The results of the tests performed have shown that it is necessary a compositional correlation gasoline-hydrogen-air, strictly determined for each running condition of the engine, in order to assure the best connection of the load characteristics.
Keywords: hydrogen, mixture, combustion, engine, dispersion