Method for feeding a combustion engine with a fuel-air mixture and device for performing the method

The method involves forming a fuel-air mixture from a primary air flow and a fuel flow and weakening the mixture with a secondary air flow in a dual action air funnel expansion stage. A fuel-air mixture of less than unity is formed from the primary air flow and the fuel flow. The mixture at the start of the expansion stage at height of the funnel narrow point is brought to a ratio of greater than unity by the induced secondary air flow. The method involves forming a fuel-air mixture from a primary air flow and a fuel flow and weakening the mixture with a secondary air flow in an expansion stage (2c) of a dual action air funnel before the mixture flows through the engine's choke flap (5) opening. A fuel-air mixture of less than unity is formed from the primary air flow and the fuel flow. The mixture at the start of the expansion stage at the same height as the funnel narrow point (2b) is brought to a ratio of greater than unity by the induced secondary air flow. Independent claims are also included for the following: an arrangement for processing a fuel-air mixture for an internal combustion engine.