Fuel Injection System for Two-Stroke Internal Combustion Engines

A fuel injection system for a two-stroke internal combustion engine (1) elastically housed in a compartment and comprising a carburettor (30) with which there are associated an induction port (9) for the air/fuel mixture and dispenser means fixed to a fuel accumulation system (25) communicating with a first aperture (14) positioned below the induction port (9) and with a second aperture (15) positioned above the induction port (9), said apertures (14, 15) being alternately opened by the skirt of the piston (3), characterised by the fact of comprising a non heat-conducting elastic intake header (22) positioned between the carburettor (30) fixed to the wall (40) of the compartment housing the engine (1) and the fuel dispenser means connected to the fuel accumulation system (25), said heat-conducting elastic intake header (22) comprising a part of a fuel feed conduit (10) intercepted by said dispenser means, and a channel is (23) in fluid communication with said induction port (9).