Fuel gas system for vehicle

Abstract

A fuel gas system (100) for a vehicle (1) comprises: a filling device (50) having an outlet pipe (56); a first circuit (11) for providing a fuel gas to an engine (8) of the vehicle, and including: a first tank (12); a first supply line (13) connecting the first tank (12) and the engine (8); a first filling pipe (14) connecting the filling device outlet pipe to the first tank (12); a second circuit (21) for providing a fuel gas to a thermic device (9) capable of heating, cooling or refrigerating, the second circuit (21) including: a second tank (22); a second supply line (23) connecting the second tank (22) to the thermic device (9); a second filling pipe (24) connecting the filling device outlet pipe (56) to the second tank (22). The first circuit (11) and the second circuit (21) are configured to be in fluid communication: in a filling phase, in which the fuel gas flows into the first and second filling pipes (14, 24) from the filling device (50) towards the first and second tanks (12, 22); and in a working phase, in which the fuel gas flows into the first and second supply lines (13, 23) from the first and second tanks (12, 22).

Description

technical field [0001] The invention relates to a fuel gas system for a vehicle. [0002] The invention can be applied to light, medium and heavy duty vehicles such as trucks, buses and coaches. Background technique [0003] Some vehicles use fuel gas, which has the advantage of being less polluting, as fuel instead of, for example, diesel or gasoline. [0004] The fuel gas may be used to run the vehicle's engine and to run thermal equipment, such as equipment that provides cooling, heating or freezing the cargo area of ​​the vehicle, and / or for cooling or heating the driver's compartment of the vehicle. In this arrangement, the vehicle is equipped with a circuit for supplying fuel gas to the engine and a circuit for supplying fuel gas to the thermal plant, each circuit comprising its own separate tank for storing fuel gas. [0005] In some countries, the law requires thermal equipment not to interfere with the operation of the engine. In other words, the engine's fuel ga...

AI Technical Summary

Problems solved by technology

The user then has to refuel the empty tank (which also refuels the other tank), so although the fuel gas is still present, all fuel gas cannot be used as the remaining fuel gas is contained in the other tank remaining fuel gas

[0013] With such fuel gas systems of the state of the art, fairly frequent refueling is required, which compromises autonomy

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