Method of controlling the pressure of a fuel system of a hybrid vehicle
AssigneeInergy Automotive Systems Research (Societe Anonyme)
InventorsBjorn Criel, Jean-Francois Berard
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Abstract
A method of controlling pressure of a fuel system of a hybrid vehicle including an engine fed with fuel stored in a tank made of plastics material, and an electric motor, the method including, when the engine is stopped, relaxing pressure inside the fuel tank in full or in part after a given safety duration and as a function of at least one stress accumulation parameter, each stress accumulation parameter being associated with an element of the fuel system and being defined by information concerning temperature, information concerning exposure duration, and information concerning a level of stress on the element.
Claims7
A method of controlling pressure of a fuel system of a hybrid vehicle including both an engine fed with fuel stored in a tank made of plastics material and an electric motor, the method comprising:
- when the engine is stopped, relaxing pressure inside the fuel tank in full or in part after a given safety duration and as a function of at least one stress accumulation parameter, each of the at least one stress accumulation parameter being associated with an element of the fuel system and being defined by information concerning temperature, information concerning duration of exposure of the plastics material of the tank to the fuel, and information concerning a level of stress on the element.
Dependencies are inferred from the claim text.