Motor vehicle tank

摘要

To diminish the escape of fuel vapors from a fuel tank filling tube during filling of the tank, a valve is provided that is switched by insertion of a fuel pump nozzle into the filling pipe so that fuel vapors escaping upon filling of the fuel tank are transmitted with comparatively low flow resistance to an active carbon receptacle. When the fuel pump nozzle is removed from the filling tube, the valve is returned to its normal operating position in which venting of the tank takes place through an upper portion of the tank filling tube and through a gravity valve and a pressure holding valve.