Patent ID: 6645372
Filing Date: 2003-11-11
Classification: B01D,F02M,H01H

Abstract:
A unit for automatically bleeding off the water which separates in a fuel filter of a vehicle, the vehicle having an engine and a switch means, said switch means operated by an ignition key and having a first activation position in which the unit is activated but the engine remains switched off, the unit comprising:a disposable container containing a filtering diaphragm; a separated water collection chamber provided in a bottom thereof with a discharge port for said water; a withdrawal device permanently associated with the vehicle for discharging said water when water in said collection chamber reaches a predetermined level; a sensor means permanently associated with the chamber; and a microprocessor connected to said sensor means and to said withdrawal device such as to activate said withdrawal device when the water reaches said predetermined level, wherein said sensor means comprises a differential level reading and monitoring system sensitive to a level between said predetermined level and a bottom of said collection chamber and connected to said microprocessor, said differential level reading and monitoring system comprising a cup-shaped guide member, of which a base part thereof is centrally holed and sealed inside the collection chamber discharge port, and a wall thereof is perforated and positioned to enclose two coaxial floats having a specific gravity between that of the fuel and that of water, and a respective sensor being associated with each individual float such that said microprocessor energizes said withdrawal device in response to a signal emitted by either of said sensors when the ignition key is in said first activation position.