Patent ID: 9027590
Filing Date: 2015-05-12
Classification: B60K,F16K,Y10T

Abstract:
1. A ventilation arrangement for the fuel tank of a vehicle with its valves assigned to a head space for realizing a maximum non-exceedable pressure, a minimum, not undershootable pressure, and an arbitrarily adjustable pressure in particular intended for fueling, with a housing receiving at least the valve for realizing a maximum pressure and the valve for realizing a minimum pressure, an atmospheric connection intended for connection to the atmosphere and a head space connection intended for connection to the head space, wherein the valves are electromagnetically switchable for realizing an arbitrarily adjustable pressure and in connection with a drive, wherein, by means of the drive, a switching movement can be generated, which starting out from the closing position of the electromagnetically switchable valves to its opening position through a first path element is equipped for opening a pilot valve, establishing a connection with small cross section between the atmospheric and head space connections and subsequently through a second path element, for freeing an inlet opening of the atmosphere connection, realizing a continuous completely opened connection between the atmospheric and head space connections, wherein the drive consists of a ring coil, in the axial direction of which an armature part is movably guided, in that the armature part is in connection with a blocking element, which with a seat surface molded into a first shaft, forms the pilot valve, in that the blocking element by means of the drive is displaceable within a bore establishing a connection with small cross section between the atmospheric and head space connections and a position closing this connection, and in that on the first shaft, engaging behind a sealing plate, a sealing head is molded on, which is equipped for actuating the valve, which is electromagnetically switchable for realizing an arbitrarily adjustable pressure.