Supply system for a single-fuel motor vehicle fueled with alternative fuel, single-fuel motor vehicle fueled with alternative fuel and adjustment procedure for said supply system

摘要

A single-fuel supply system (4) for an engine (32) fueled with alternative fuel, such as liquefied petroleum gas, methane, hydrogen and the like, comprising - a flow adjusting device (12) having a device body (16) provided with a main intake tube (20), at least one shutter (24) that intercepts and at least partially occludes the main intake tube (20) and a supply tube (28) arranged at the outlet of the tube main inlet (20), - an alternative fuel tank (36), - in which the main intake tube (20) receives a main flow comprising a combustion support and an alternative fuel, coming from said tank (36 ), mixed according to a first title (a1) characterized in that - the system (4) comprises a secondary intake pipe (44), to introduce a secondary flow, different from the main flow, directly into the supply pipe (28 ) avoiding the obt urator (24), and is provided with an alternative fuel enrichment diffuser (48), in fluid connection with said tank (36), so that it enriches the secondary flow with fuel and sends it to the supply tube (28) with a second title (a2) that is richer in fuel than the first title (a1) of the main flow, in which the secondary intake pipe (44) is shaped in such a way that it extracts from the main intake pipe (20) a it starts from the main flow, according to the first title (a1), and mixes it with alternative fuel by means of an enrichment diffuser (48) to obtain the secondary flow that has the second title (a2).