Refuelling safety method and device for a vehicle fuelled with gas transportation fuel, such as cng, lpg, hydrogen

摘要

The present invention relates to a refuelling safety method for a vehicle fuelled with gas transportation fuel, such as CNG (Compressed Natural Gas) or LPG (Liquefied Petroleum Gas) or hydrogen, which provides the engine stopping in case of opening of the fuel filler neck closing element on the vehicle tank when the vehicle is stationary. Moreover with vehicle speed below a threshold, if the closing element is open, the engine is stopped; with vehicle speed higher than a threshold, the engine is left on regardless of the open or closed condition of the closing element.