Abstract:
The invention relates to a vent valve (1) for controlling the internal tank pressure of a fuel tank, having at least one valve housing (2) having at least one first connection (3) to the fuel tank and at least one second connection (4), which can be connected to a vent line leading to a fuel vapour filter. The vent valve (1) comprises at least one valve element, which is held in a valve seat (8) in a position in which it closes the first connection (3) by the force of gravity and/or by spring loading and, after a given pressure threshold is exceeded, is raised from the valve seat (8) and, when a given pressure threshold is undershot, returns to the initial position. The valve element and/or the valve element guide has/have at least one relief opening (10), which forms a bypass for a gap flow which arises, for example, during a return movement of the valve element.
Abstract:
Die Erfindung betrifft einen Tankdeckel (10) zum temporären Verschließen eines tankstellenseitig befüllbaren Tanks für insbesondere Kraftstoff oder Harnstoff eines Kraftfahrzeuges, welcher Tankdeckel einen Luftdurchlass-Kanal zum Zwecke eines Be- und Entlüftens des Tanks aufweist, wobei ferner in dem Luftdurchlass-Kanal ein Ventil angeordnet ist, das in bestimmten räumlichen Positionen des Deckels den Luftdurchlass-Kanal fluiddicht zu verschließen vermag.
Abstract:
An integrated valve assembly comprises an integrally molded one-piece housing. A platform surrounds a central fuel funnel. A valve receptacle is adjacent the central fuel funnel. A pathway extends from the valve receptacle towards the platform. A roll-over valve cartridge is in the valve receptacle. The roll-over valve cartridge comprises a float, a roll-over sealing member, a float sleeve, and an orifice. The roll-over valve cartridge is configured for fluid exchange through the float sleeve and the orifice in an open condition, and configured for the float to rise in liquid to abut the sealing member against the orifice in a closed condition. The orifice is in fluid communication with the pathway.
Abstract:
A refuelling coupling has an annular fitting (1) having a bore (2), bayonet lugs (3) and slots (4) suiting it for connection to a pressure filling nozzle (50). A dry-break member (5) is provided within the annular fitting, normally sealing to it with the aid of an O-ring seal (6). When the pressure filling nozzle is fitted, the dry-break member is depressed allowing fuel to flow. The dry-break member has a central aperture (11), normally closed by a side pivoted flap (12). The pivot (14) is at a pin (15) carried in lugs (16) on the underside of a central disc (17) having the aperture (11). The flap has a finger (17) projecting between the lugs and having the pin passing through it. A spring (18) is carried on the pin and normally biases the flap into its closed position parallel with the disc. An O-ring (19) is carried on the flap whereby should unusual forces displace fuel against the flap it does not leak. For gravity nozzle fuelling, a gravity fuelling nozzle (52) is placed against the flap and pushed in against its spring. Refuelling can now occur.
Abstract:
It is proposed a method for venting of a liquid tank (100), the tank comprising a valve (200), a primary compartment (102) and a secondary compartment (103) which are connected together in a communicating manner by means of a bridge (104). The valve is such that it comprises: a) a chamber provided with a cover, which extends at least partly into the tank and is connected via an upper venting aperture (203) to a venting circuit; b) first means (206) for monitoring a level of liquid in the primary compartment; c) second means (207) for monitoring a level of liquid in the secondary compartment; The valve is such that it is configured to be closed when: - said first means detect that the level of liquid in the primary compartment is equal to or higher than a first predetermined filling level (L1 ); and - said second means detect that the level of liquid in the secondary compartment is equal to or higher than a second predetermined filling level (L2).
Abstract:
A roll over fuel-vapor valve is provided comprising a housing (52) defining a valve having a valve inlet port extending through a wall of the housing and a valve outlet port (100) and a float member (64) disposed between said inlet port and said outlet port and being displaceable between an open position and a closed position, said housing (52) further comprising a fluid flow channel (86) extending along a top portion thereof and having a first end and a second end, wherein said outlet port (100) is extending into said channel (86) such that in said open position fluid flow is facilitated between said valve inlet port and said channel.
Abstract:
The invention relates to a vent valve (1) for controlling the internal tank pressure of a fuel tank, having at least one valve housing (2) having at least one first connection (3) to the fuel tank and at least one second connection (4), which can be connected to a vent line leading to a fuel vapour filter. The vent valve (1) comprises at least one valve element, which is held in a valve seat (8) in a position in which it closes the first connection (3) by the force of gravity and/or by spring loading and, after a given pressure threshold is exceeded, is raised from the valve seat (8) and, when a given pressure threshold is undershot, returns to the initial position. The valve element and/or the valve element guide has/have at least one relief opening (10), which forms a bypass for a gap flow which arises, for example, during a return movement of the valve element.
Abstract:
Systems and methods for fuel tank tube routing and valve placement to prevent fuel leaks into the evaporative emissions system are disclosed. An embodiment provides a vehicle fuel tank venting system that uses strategically placed valves and a low profile tube routing to prevent the leakage of liquid fuel to an evaporative emission system in the event of a valve failure. In one aspect, a first and second outlet valve may be positioned such that at least one of the valves is above a full fuel level for a desired range of fuel tank tilted positions. Among the desired range, when the first valve is submerged in fuel, at least a portion of the first outlet tube may be above the full fuel level, and when the second valve is submerged, at least a portion of the second outlet tube may be above the full fuel level.
Abstract:
A roll over fuel-vapor valve is provided comprising a housing defining a valve having a valve inlet port extending through a wall of the housing and a valve outlet port and a float member disposed between said inlet port and said outlet port and being displaceable between an open position and a closed position said hosing further comprising a fluid flow channel extending along a top portion thereof and having a first end and a second end, wherein said outlet port extending into said channel such that in said open position fluid flow is facilitated between said valve inlet port and said channel.
Abstract:
A refuelling coupling has an annular fitting (1) having a bore (2), bayonet lugs (3) and slots (4) suiting it for connection to a pressure filling nozzle (50). A dry-break member (5) is provided within the annular fitting, normally sealing to it with the aid of an O-ring seal (6). When the pressure filling nozzle is fitted, the dry-break member is depressed allowing fuel to flow. The dry-break member has a central aperture (11), normally closed by a side pivoted flap (12). The pivot (14) is at a pin (15) carried in lugs (16) on the underside of a central disc (17) having the aperture (11). The flap has a finger (17) projecting between the lugs and having the pin passing through it. A spring (18) is carried on the pin and normally biases the flap into its closed position parallel with the disc. An O-ring (19) is carried on the flap whereby should unusual forces displace fuel against the flap it does not leak. For gravity nozzle fuelling, a gravity fuelling nozzle (52) is placed against the flap and pushed in against its spring. Refuelling can now occur.