LEAK DETECTION METHOD AND ASSOCIATED VALVE AND FUEL SYSTEM

摘要

The present invention comprises an orifice with a controlled section between the fuel tank, and the tank and the air relates to a method of detecting a leak in the fuel system, the method ; a) a control section time (T ₁ ) value (A _{with 1} ) as a set, and the pressure difference between the interior and the atmosphere of the fuel tank for a given fuel flow coming out of the fuel tank ( p ₁ ) the time (T ₁ ) measuring at least after a time interval ( T) from; ; b) value in the control section time (T ₂ ) (A ₂ ) settings, the same air pressure difference between the interior of the fuel tank for a given fuel flow ( p ₂ ) the time (T ₂ ) from the time interval at least equal to ( T) after measuring; ; c) The pressure difference ( p ₁ , p ₂ ) for calculating the ratio, the same fuel system ( However, the ratio of the obtained difference to a reference pressure comprises a calibrated leakage) ( p _L ) and is carried out according to the step of comparing.