Patent ID: 8789557
Filing Date: 2014-07-29
Classification: B60K,F16K,Y10T

Abstract:
1. Ventilation arrangement for the fuel tank of a vehicle with valves allocated to the head space including a maximum pressure valve for producing a maximum pressure, which is not to be exceeded, a minimum pressure valve for producing a minimum pressure below which the pressure must not fall, and a random pressure valve for producing a randomly adjustable pressure intended for the tank filling process, with a housing receiving the maximum pressure valve, the minimum pressure valve, and the random pressure valve, an atmosphere connector intended for connection to the atmosphere and a head space connector intended for connection to the head space, wherein the random pressure valve is formed in an electromagnetically switchable manner and the minimum pressure valve is formed by a sealing plate which, under bias produced by a first spring in the direction towards the atmosphere connector, lies against a sealing surface formed by the edge of an inlet opening of the atmosphere connector, with the sealing plate at the same time being connected to an electromagnetic drive, in this respect fulfilling the function of the random pressure valve, with the sealing plate having a central opening, against the side of which, facing the atmosphere connector lies a sealing head, being under bias produced by a second spring in the direction towards the head space connector and fulfilling the function of the maximum pressure valve with the sealing head being connected to a shaft extending through the central opening and with one end of the second spring being supported on the side of the sealing plate facing away from the head space connector and the other end thereof being supported on a yoke connected to the shaft.