摘要:
To provide a simple on-board refueling vapor recovery (ORVR) system without separate check valves and the like, a multi-path valve, typically a 6/2 valve (5) is provided, and formed with a discrete switching path (13) which is inserted in a pressure equalization line (12). Upon valve operation between a fuel filling mode position and an operating mode position, respectively, the valve switches the discrete switching path of the pressure equalization line (12) to connect the equalization line (12) to a fuel vapor receptor through a valve outlet when the valve (5) is in operating mode position, while blocking the equalization line (12) when the valve (6) is in filling mode position. A roll-over valve (14) can be integrated into the system, preferably coupled to a small-diameter pressure equalization duct (15) with a fill vent line (3) which, by operation of the valve, is open when a nozzle (9) is introduced into a filling stub (2) for the fuel tank, but closed when the nozzle is removed, leaving only an operating vent line (4), the pressure equalization line (12) and the small-diameter pressure equalization duct (15) in communication with the outlet from the valve leading to vapor receptor.
摘要:
A filler pipe for the fuel tank of a motor vehicle having an internally located closure flap which closes a filling aperture at the end region of an internally located housing part made from plastic and can be brought into its open position by insertion of a fuel-pump nozzle in order to fill the fuel tank. An elastomeric seal is arranged on the housing part acting between the housing part and the closure flap. The seal is applied to a seal support which is connected to the plastic housing to provide a seal both relative to the closure flap and relative to the housing part.
摘要:
A fuel tank with ventilation system and activated carbon filter which, on the one hand, is connected by a first line (22) to the fuel tank and by a second line (25) to an internal combustion engine, and, on the other hand, by a third line (26) to the atmosphere, should have as simple and compact a ventilation system as possible, which fulfills all functions in full measure. To this end, a controlled two-way valve unit (23) is provided, whereof the first path connects the first line (22) to the third line (26) and the second path connects the second line (25) to the third line (26), and an electronic control unit (28) is provided, which on the input side is connected to a refueling sensor (7) and to a liquid level sensor (13) and on the output side is connected to the controlled two-way valve unit (23). The controlled two-way valve unit (23) comprises two valves (45, 46) accommodated in a common housing (40) and having closing bodies (47, 48), whereof the first (47) closes off or opens up the first path and the second (48) closes off or controllably opens up the second path.
摘要:
A cap-free filler neck for a motor vehicle tank comprises a tubular part, which is connected to the tank, and an insert, which insert comprises a funnel part with a throat and a partition part adjoining the throat at the bottom. The upper edge zone of the funnel part and the partition part adjoin the tubular part in a sealing manner. The partition part has a throughflow opening which is closed in a sealing manner by a flap, which can be locked in a closed position, and can be pivoted into an open position counter to the force of a spring by a fuel nozzle. So that, despite the tight closure, rainwater which has penetrated can flow away, the space delimited by the tubular part, the funnel part and the partition part can be brought into connection with the environment via an opening in the tubular part, which opening can be closed by a valve, which is accommodated in said space, by the introduction of the fuel nozzle.
摘要:
The present invention is a capless refueling assembly for a motor vehicle fuel tank. The capless refueling assembly has a housing assembly having a nozzle-receiving opening in fluid communication with the fuel tank such that a fuel nozzle can be inserted in the nozzle-receiving opening and supply liquid fuel to the fuel tank. A primary seal is mounted within the housing assembly for pivotal movement between a sealed position wherein the primary seal sealingly closes the nozzle-receiving opening and an open position. The pivotal movement is responsive to a fuel nozzle being inserted into and removed from the nozzle-receiving opening. A closure is pivotally mounted to the housing assembly for movement between a covering position wherein the closure covers a mouth of the nozzle-receiving opening and an access position wherein a fuel nozzle can be inserted into the nozzle-receiving opening. A vapor venting valve engages the primary seal for cooperative movement therewith. The vapor valve includes a first biasing element for biasing the primary seal to the sealed position. The venting valve is movable between a venting position wherein fuel vapor in the fuel tank is permitted to vent from the fuel tank through a vapor flow path and a valve closed position wherein fuel vapor in the fuel tank is prevented from venting through said vapor flow path. The venting valve includes a second biasing element for biasing the venting valve to the valve closed position. The movement of the venting valve is responsive to a fuel nozzle being inserted into and removed from the fuel nozzle-receiving opening and responsive to a pressure condition in the fuel tank. The primary seal is movable from the sealed position overcoming the first biasing element in response to a vacuum condition in the fuel tank.
摘要:
A fuel tank with an opening, on which a lid is mounted in a removable manner by means of thread or bayonet, is intended to provide a sustained and sealed closure under all conditions. For this purpose, two sealing rings are arranged between the sealing surfaces, the inner one being liquid-tight and the outer one being made of an elastomer with high permeation resistance. The sealing surfaces within the outer sealing ring have a narrow gap leading as far as the outer sealing ring, and the fuel tank has a reinforcement surrounding the opening.
摘要:
A tank cap has a cap part, a filler neck for receiving a refueling nozzle wherein the neck can be closed by the cap part via a rotary closure having at least two seals arranged on the cap part and active between the cap part and the neck. The sealing surfaces on the neck are provided behind a raised region of a protuberance and below at least one projection.
摘要:
A metal fuel tank (1) with two tank shells (1a, 1b) which are welded together, an electrically driven fuel supply unit (2) inside the tank, and also with lead-in ducts for at least one metal fuel line (3) and for a connection device for supplying electricity to the fuel supply unit (2). The tank (1) is produced in such a way as to mount the fuel supply unit (2) from inside the tank (1) before the tank shells (1a, 1b) are welded together, and to have the lead-in ducts running through at respectively separated points through the tank shells (1a, 1b) which are created using gas-tight means of connection.