Inergy Automotive Systems Research (societe Anonyme)

Inergy Automotive Systems Research

Nicolas Duret

Jean-Claude Habumuremyi

Frederic Peucat

Stephane Leonard

Guillaume Zeller

Volodia Naydenov

Francois Dougnier

Stéphane Leonard

Claude Mesjasz

Jean-Baptiste Gouriet

Jae Sik Choi

Frédéric Peucat

SCR system for treating the exhaust gases of an internal combustion engine, this system comprising a line for feeding a urea solution into the exhaust gases and a pump capable both of feeding the urea solution into the exhaust gases and of purging at least one part of the line by sucking a gas therethrough by means of a suction device, this system also comprising a control unit capable of activating and/or deactivating the operation of the pump and that of the suction device in a sequential manner in the course of one and the same purge procedure.

SCR system and method for the purging thereof

Process for transferring a liquid from a passive tank () for storing the liquid to an active tank () using a pump intended for pumping the liquid held in the passive tank () and transferring it to the active tank (), according to which the pump is commanded so as to transfer liquid from the passive tank () to the active tank () when said active tank () has a liquid level below a set point level Lsp and when the passive tank () contains liquid at a temperature above the freezing point of the liquid.

Process for transferring a liquid using a pump

Method for controlling an injector intended for injecting a pollution-control liquid additive into the exhaust gases of an internal combustion engine at a flow rate governed by a given frequency and opening time of the injector, the injector having a calibration curve that establishes, at given frequency, pressure, temperature and nature of the liquid, the amount of liquid injected during an opening of the injector as a function of the duration of this opening, this curve comprising at least one linear zone (calibration line) and a non-linear zone, said method being characterized in that in the linear zone the parameters of the calibration line are used and in the non-linear zone use is made of a set opening time and a variable frequency according to at least one calibration point established for this purpose. SCR system to which this method can be applied.

Method and system for injecting a liquid

Method for heating a urea SCR system using at least two resistive heating elements (R, R), one of which (R) is intended for heating one or some (part(s) of) component(s) always in contact with a substantial amount of urea and the other (R) is intended for heating one or some (part(s) of) component(s) which are sometimes not in contact with a substantial amount of urea, and according to which, when starting the system in freezing conditions, the resistive element Ris activated but the resistive element Ris activated only when its component is actually in contact with a substantial amount of urea.

Method for heating an SCR system using resistive heating elements

Method for heating at least one component of an SCR system using several resistive heating elements, according to which these heating elements are fed in parallel by a current source and according to which a current sensor is placed in series with the current source and all the resistors, which are connected in parallel.

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Nancy, France

Nicolas Duret