Thermal management system for the feeding of fuel in internal combustion engines

A thermal management system for the feeding of fuel in internal combustion engines of the type comprising:

• an injection system associated to a fuel feed line;
• a cooling system (CS), using at least one cooling fluid which circulates, through hot fluid ducts and cold fluid ducts, through parts of the engine (M) and of a heat exchanger;
• and an exhaust tubing for the exhaust gases, the system wherein the fuel feed line comprises:
• a first segment which is directly connected to the injection system and provided with a first valve, to be automatically closed when the temperature of the fuel supplied to the injection system is below a predetermined maximum value, which is lower than, the vaporization temperature of fuel, and automatically open, when the fuel temperature reaches said maximum value;
• and
• a second segment defining a by-pass to the first segment and located in order to absorb thermal energy from at least one of the heat sources (HS), defined by the hot fluid being taken to the heat exchanger and by the combustion gases being released by the exhaust tubing, said second segment having a first portion intersecting the first segment upstream of the first valve and a second portion intersecting the first segment downstream of the first valve, said second segment being provided with a second valve on the first portion located upstream in relation to the heat source (HS) and with a one-way valve on the second portion located downstream in relation to the heat source (HS), the second valve being automatically open, while the temperature of the fuel is lower than said maximum value and automatically closed when the temperature of the fuel reaches said maximum value, such that the first and second valves are never simultaneously both open or both closed.