摘要:
The invention relates to a method for controlling a temperature for regenerating a particle filter for an injection engine supplied with fuel by a turbine consisting in carrying out instructions (Kef, Ktam) and measures (Mef, MTam) for the filter input temperature upstream from the turbine and the variable of an action (VA1) affecting one or several injection parameters in such a way that the divergence between the instruction and the measure is reduced. The inventive method substentially consists in controlling a temperature upstream from the turbine and at the input of the filter in order to develop the action variable.
摘要:
Procédé de dépollution des gaz d'échappement d'un moteur à combustion interne comportant une étape de détection du besoin d'enclencher une régénération d'un système de filtrage des particules et une étape d'activation d'une régénération, caractérisé en ce que l'étape d'activation comporte : - une étape de commande d'un système (10) d'injection de carburant dans les cylindres (8) du moteur (2) pour augmenter la température des gaz d'échappement en amont d'un catalyseur supplémentaire (26), placé en amont d'un système (32) d'injection de carburant dans le circuit d'échappement du moteur, selon un premier mode de fonctionnement ; - une étape de commande du système d'injection (10) de carburant dans les cylindres (8) du moteur pour augmenter la température du catalyseur supplémentaire (26), selon un deuxième mode de fonctionnement , lorsque la valeur (TSDOC1) de température du catalyseur d'oxydation supplémentaire est supérieure à un seuil (TADOC1); - une étape de commande du système (32) d'injection de carburant dans le circuit d'échappement lorsque la valeur (TSDOC2) du catalyseur du système de filtrage est supérieure au seuil (TADOC2).
摘要:
The invention relates to a method for regenerating a particle filter on the exhaust line of an internal combustion engine, in which fuel is injected into the exhaust tube upstream of an oxidation catalyst which is disposed upstream of the particle filter. The invention is characterised in that during regeneration: the injection of fuel into the exhaust tube is interrupted when the operation of the engine enters a critical zone (S2) defined by maximum load and speed limit values; the injection of fuel is re-established when the operation of the engine returns to the non-critical zone (S1); and, during the transient operating phases between the two zones (S1, S2), the volume flow rate of the exhaust gases is measured and, as a function of said measurement, the fuel injection rate is reduced or the fuel injection is deferred.
摘要:
The invention relates to a method for regenerating a particle filter on the exhaust line of an internal combustion engine, in which fuel is injected into the exhaust tube upstream of an oxidation catalyst which is disposed upstream of the particle filter. The invention is characterised in that during regeneration: the injection of fuel into the exhaust tube is interrupted when the operation of the engine enters a critical zone (S2) defined by maximum load and speed limit values; the injection of fuel is re-established when the operation of the engine returns to the non-critical zone (S1); and, during the transient operating phases between the two zones (S1, S2), the volume flow rate of the exhaust gases is measured and, as a function of said measurement, the fuel injection rate is reduced or the fuel injection is deferred.