Renault S.a.s.

Nicolas Thouvenel

Laurent Leprieur

Adrien Pillot

Jerome Cruchet

Nicolas Fabre

Baptiste Edeline

Cyril Pradeilles

Aymeric Walrave

Alexandre Martinez

Eric Albin

Steve Kieffer

Julien Millan

Violaine Ploton

A device for controlling the operating state of a catalytic converter in the exhaust line of an internal combustion engine, including a mechanism for determining the temperature upstream and downstream of the converter, a mechanism for injecting fuel in the exhaust line of the engine, a mechanism for calibrating a temperature model on a measured operating temperature of the catalytic converter, and a mechanism for calculating the integral of the difference between the measured temperature and the modeled temperature downstream of the converter.

Method and device for the control of the operating state of the catalytic converter of the exhaust line of an internal combustion engine

A device for monitoring an operating mode of an element used for aftertreatment of exhaust gases from an internal combustion engine and to an associated method. The device includes a controller configured to receive a signal that represents a characteristic magnitude of the exhaust gases downstream of the exhaust gas aftertreatment element. In addition, the controller can receive a signal that represents engine deceleration and is configured to increment a deceleration counter with each deceleration. The controller also includes a failure counter that is incremented when a variation in the above-mentioned measured magnitude is detected during a deceleration, the controller establishing a diagnostic criterion that is a function of the two counters. The controller triggers a fault signal if the diagnostic criterion exceeds programmed limits.

Method and device for monitoring a particle filter in the exhaust line of an internal combustion engine

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Ballancourt sur Essonne, France

Nicolas Thouvenel