Rhodia Operations

Filtrauto

Sogefi Filtration France

Filtrauto Sa

Sogefi Filtration

Guy Monsallier

Virginie Harle

Michael Lallemand

Christophe Guillon

Antoine Lacarriere

Jean-Jacques Falc'hon

Thierry Seguelong

Dominique Horbez

The fuel filter () contains a filter element () and an additive tank () in a housing (). The filter element is engaged against the removable cover () of the housing and has a filter medium () extending in an annular manner around an inner space (). An additive release device () extends into this inner space () to distribute liquid additive from the tank () into a fuel circulation circuit for an internal combustion engine. The additive selectively flows into a sealed distribution channel (DC) of the device () depending on an open or closed configuration of an actuator component () associated with the distribution channel. The distribution channel (DC) opens into a fuel channel () of the cover () that has a larger cross-section than the distribution channel (DC).

Fuel filter with additive release device

In a filter cartridge (CC) for a fuel filter, the filter element () and the additive module are connected and typically stacked so as to allow them to be integrally inserted into a filter housing. The substantially annular filter medium () delimits an inner space () into which at least one part () of the attachment end of the additive module can be engaged. The liquid additive is stored in a casing forming a tank () that is placed at a fuel pressure and delimits an internal volume (V) that can be varied so as to maintain an identical pressure between the liquid additive and the fuel at the periphery (V) of the tank (). The additive module has an external connection () with a liquid additive outlet pipe (), said external connection () including sealing means () for automatically closing the outlet pipe in a fluidtight manner when the external connection is in a disengaged state.

Fuel filter and cartridge for such a filter with an onboard additive tank

The invention relates to a device for dispensing a liquid additive into a fuel circulation circuit () for an internal combustion engine, in particular for an engine equipping a vehicle, said device comprising:

Device for dispensing a liquid additive into a fuel circulation circuit for an internal combustion engine, vehicle comprising such a device, and method for using said device

The invention relates to a method for diagnosing the malfunctioning of a device for adding an additive into a fuel for a vehicle comprising an internal combustion engine, said method including: a step of analyzing the fuel in order to determine a variation in the amount of additive in the fuel; a step of comparing the variation in the amount of additive, measured during the previous step, with a theoretical variation in said amount; a step of sending information when the difference between the measured variation and the theoretical variation exceeds a set value. The invention also relates to a system for adding an additive into fuel and for diagnosis for a vehicle comprising an internal combustion engine, which is intended for implementing said method.

Method for diagnosing the malfunctioning of a device for adding an additive into a fuel for a vehicle, and system for implementing said method

The invention relates to a device for dispensing a liquid additive into a fuel circulation circuit for an internal combustion engine, comprising a reservoir () of liquid additive allowing an additive to be distributed into the fuel circulation circuit by means of a distribution line (), characterized in that it comprises an additive chamber () in communication with the fuel circulation circuit and at least one wall () that is mobile and fluidtight between said additive chamber and the additive reservoir which, on the one hand, provides a fluidtight division and, on the other hand, maintains equal pressure between the additive in the additive reservoir and the fuel in the additive chamber.

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Granville, France

Guy Monsallier