FUEL SYSTEM FOR A MOTOR VEHICLE

摘要

A fuel system for a motor vehicle includes a fuel tank, a filling tube closable by a tank cover; a pressure sensor for measuring a pressure in the fuel tank; an activated carbon filter, a tank isolation valve arranged between the fuel tank and the activated carbon filter, and a control for opening and closing the tank isolation valve, wherein the control opens the tank isolation valve in response to receiving input indicating an intent to refuel and closes the opened tank isolation valve again when the pressure in the fuel tank measured by the pressure sensor falls below a predetermined first pressure threshold value, wherein the control subsequent to the closing of the tank isolation valve opening the closed tank isolation valve again when the pressure in the fuel tank measured by the pressure sensor exceeds the predetermined first pressure threshold value and/or exceeds a predetermined second pressure threshold value, which is higher than the predetermined first pressure threshold value.

主权项

1. A fuel system for a motor vehicle, said fuel system comprising:
a fuel tank configured as pressure tank, a filling tube closable by a tank cover; a pressure sensor for measuring a pressure in the fuel tank; an activated carbon filter; a tank isolation valve arranged between the fuel tank and the activated carbon filter; and a control for opening and closing the tank isolation valve, said control opening the tank isolation valve in response to receiving input indicating an intent to refuel and closing the opened tank isolation valve again when the pressure in the fuel tank measured by the pressure sensor falls below a predetermined first pressure threshold value, said control subsequent to the closing of the tank isolation valve opening the closed tank isolation valve again when the pressure in the fuel tank measured by the pressure sensor exceeds the predetermined first pressure threshold value and/or exceeds a predetermined second pressure threshold value, said predetermined second pressure threshold value being higher than the predetermined first pressure threshold value.