Plastic Omnium Advanced Innovation and Research

Inergy Automotive Systems Research (societe Anonym)

Inergy Automotive Systems Research

Opmobility C-power Belgium Research

Antoine Chaussinand

David Hill

Bjorn Criel

Paul Daniel Reuther

Mihai Baja

Jules-Joseph Van Schaftingen

Laurent Duez

Dominique Madoux

Scott McCleary

Jurgen Dedeurwaerder

Damien Reveillard

A frame for a plastic tank for a motor vehicle, containing at least one means for attaching an internal reinforcing element of the plastic tank which is intended to connect two opposite walls of said plastic tank. The at least one means for attaching the internal reinforcing element includes at least one first structure configured to snap-fit at least a portion of the internal reinforcing element. The at least one first structure contains at least two bodies that are movable relative to each other. The at least two bodies are provided with a holding means configured to hold the internal reinforcing element in a direction opposite to a snap-fitting direction, and at least one stop element, separate from the at least two bodies, protruding in a direction opposite to the snap-fitting direction in order to provide a stop for the internal reinforcing element when said element is snap-fit into place.

Frame for a motor vehicle tank

The invention relates to a leak detection system on board of a vehicle comprising a fuel tank (), a filler pipe (), a venting line () for recirculating fuel vapors from the tank to the filler pipe, said system having a combination pressure and temperature sensor mounted in the vapor dome of the fuel tank, and a pressure sensor located in the recirculation line above the highest possible liquid level that could be present in the recirculation line and to methods to detect said leak.

Leak detection system

Fuel tank () having: a wall () defining an internal volume () of the tank, and a temperature sensor () located inside the internal volume of the tank and at least partially enveloped with a material () having a thermal diffusivity comprised between 2&#xd7;10and 2&#xd7;10m/s at 20&#xb0; C. The temperature sensor measure an internal tank temperature, such as a vapor dome temperature.

Fuel tank comprising a temperature sensor

A module () for use in a vehicle fuel system, said module comprising a housing () having a first port (), a second port () and a passage () between the first port and the second port; a closure body () that is moveably arranged in said housing; wherein said closure body is configured for closing the passage between the first port and the second port in a first position of the closure body and for allowing access to the passage in a second position of the closure body; and a pump () that is integrated in said housing (), wherein said pump () communicates with the first port () and is configured for pumping fluid into or out of the first port () while the closure body () is in the first position, characterized in that the module () further comprises a motor () and a closure body actuator () configured for positioning the closure body () in at least the first position and the second position, wherein said closure body actuator is driven by said motor (), and said motor is configured for driving the pump () while the closure body is in the first position.

Vehicle fuel system with vapour control

The fuel tank () comprises: an electronical board, a first sensor connected to the electronical board, the first sensor being a pressure sensor, a pressure port () forming a hole through a wall () of the tank, at least one second sensor () extending fully inside the tank, and a connector () connecting the second sensor to the electronical board through the pressure port, a first part () of the connector being connected to the second sensor by at least one first wire () and a second part () of the connector being connected to the electronical board by at least one second wire ().

Tank comprising a pressure sensor and another sensor

Determining the thermodynamic state of fuel includes opening the venting connection to release the tank pressure while monitoring the derivative pressure (dP/dt), closing the venting connection when one of the following conditions is met, the derivative pressure (dP/dt) is lower than a predetermined threshold DP1 or the opening time &#x394;t1 reaches a predetermined value, if the closing of the venting connection occurs when the opening time &#x394;t1 reaches the said predetermined value, determining that the fuel is boiling and aborting the method if the closing of the venting connection occurs when the derivative pressure (dP/dt) is lower than the said threshold DP1, measuring an initial tank pressure at the closing of the venting connection, measuring the final tank pressure after a closure time &#x394;t2, calculating the pressure variation (&#x394;P/&#x394;t2), comparing the pressure variation (&#x394;P/&#x394;t2) with a first threshold PV1, if the pressure is lower then aborting the method.

Method for determining the thermodynamic state of the fuel in a fuel system

A method for controlling a pressure inside a fuel tank system on board a vehicle, the fuel tank system having a fuel tank and a venting circuit having at least one controllable pressure relief valve, the vehicle having a source of energy adapted to activate said at least one pressure relief valve so as to move it from a closed position to a pressure relief position. The method entails: detecting a key off event indicative of the vehicle shut-down; determining an amount of energy available at the source of energy; starting at least one pressure relief operation by verifying whether the amount of energy available is lower than a first predetermined threshold amount and, if the verification is positive, activating the at least one pressure relief valve; and terminating the at least one pressure relief operation.

Method for controlling a pressure inside a fuel tank system

A method for determining the volatility of fuel in a fuel storage system which entails: determining that a refueling event has occurred () and that the fuel storage system has subsequently been sealed (); performing a first pressure measurement () at a first time after the determining; performing a second pressure measurement () at a second time, the second time occurring after the first time; determining a pressure evolution rate () from the first pressure measurement at the first time and the second pressure measurement at the second time; and deriving an estimation () of the volatility of the fuel from the pressure evolution rate.

Method and system for determining the volatility of a fuel

A method for controlling a filling operation of a vehicular liquid storage system including a tank equipped with a filler pipe and a shut-off valve, the method including detecting the start of a refilling event; while the shut-off valve is open, observing whether a measured fill level of the tank has reached a predetermined fill level; if the predetermined fill level has been reached, performing the following steps: closing the shut-off valve to induce a shut-off of a filling nozzle; when a first pressure criterion is met, opening the shut-off valve; and when a second pressure criterion is met, closing the shut-off valve. The second pressure criterion includes a decrease of pressure inside the tank below a predetermined pressure level.

Method and system for controlling a filling operation of a vehicular liquid storage system

It is proposed a method for detecting a leak in a fuel system of a combustion engine comprising a fuel tank. The method is such that it comprises the steps of:

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Brussels, Belgium

Antoine Chaussinand