Fuel tank isolation valve with intermediate position latching for single operation
AssigneePadmini Vna Mechatronics Ltd.
InventorsKabir Bhandari, Amardip Kumar, Varun Kumar, Sahil Singla
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Abstract
The present invention provides an improved fuel tank isolation valve (10). In particular, the invention is directed to provide an improved fuel tank isolation valve (10) which is normally open for one time delivery condition of the valve to enable refuelling function at the time of vehicle assembly. Said valve (10) comprises of a valve housing (1) and a solenoid housing (2), wherein the solenoid housing (2) includes one latch assembly that locks the moving core (12) in radial or axial direction to provide an intermediate latching position for single operation.
Claims13
An improved fuel tank isolation valve (10) with intermediate position latching for single operation comprising:
- a) a valve housing (1) has a canister port (3), a tank port (4) and is fitted over a solenoid housing (2), the valve housing (1) includes a compression spring (5) fixed inside the valve housing (1) for performing OPR function, a seal sub assembly (6), a flow limiter (8), a sealing surface (9) and a shaft/plunger (7);
- b) solenoid housing (2) includes a solenoid (11), a moving core (12), a compression spring (13) for performing OVR function;
- wherein,
- said shaft (7) is assembled with seal sub-assembly (6) for OPR function for inline guiding of the flow limiter (8);
- said solenoid housing (2) on its top end has at least one latch assembly connected to provide a one-time powerless opening to perform the refueling at the time of vehicle assembly;
- the latch assembly comprises a torsional spring (16), a hinge (17), a compression spring (23), and a cover (24);
- and
- said latch assembly locks the moving core (12) in radial or axial direction to provide an intermediate latching position for single operation.
Dependencies are inferred from the claim text.