摘要:
L'invention porte principalement sur un procédé de contrôle de conformité au montage d'un capteur de pression différentielle (17) comportant un piquage de pression (18) en amont et un piquage de pression(19) en aval d'un filtre à particules (16) de moteur thermique (10), caractérisé en ce que ledit procédé comporte : une étape de réalisation d'au moins une première mesure par le capteur de pression différentielle (17) lors d'une première phase de fonctionnement du moteur thermique (10), une étape de réalisation d'au moins une deuxième mesure par le capteur de pression différentielle (17) lors d'une deuxième phase de fonctionnement du moteur thermique, et une étape de validation ou non du montage du capteur de pression différentielle (17) en fonction des mesures réalisées.
摘要:
Dispositif de recirculation (10) de gaz brulés d'un groupe motopropulseur de véhicule automobile comprenant : - un carter (101) d'un système de dépollution (100) de gaz brulés,5 - un échangeur de chaleur (102) entre un liquide de refroidissement et lesdits gaz brulés et présentant un embout de connexion (11) avec une paroi tubulaire (12) enfoncé dans une ouverture (108) de sortie du carter du système de dépollution, caractérisé en ce que le dispositif (10) comprend une enveloppe (14) apte à 10 entourer la paroi tubulaire (12) de l'embout de connexion.
摘要:
The present disclosure is directed to a system for treating an exhaust gas stream from an engine, which includes a diesel oxidation catalyst (DOC) located downstream of the engine and adapted for oxidation of hydrocarbons and carbon monoxide, an injector adapted for the addition of a reductant to the exhaust gas stream located downstream of the DOC, a catalyzed soot filter (CSF) located downstream of the 5 injector, and a selective catalytic reduction component adapted for the oxidation of nitrogen oxides located downstream of the CSF. The CSF is adapted for oxidizing hydrocarbons and includes a selective oxidation catalyst composition on a filter with high selectivity ratio for hydrocarbon oxidation: ammonia oxidation (e.g., at least 0.6).
摘要:
An exhaust system for an internal combustion engine, the exhaust system comprising, a lean NOx trap, and a wall flow monolithic substrate having a pre-coated porosity of 40% or greater, and comprising an oxidation catalytic zone, the oxidation catalytic zone comprising a platinum group metal loaded on a first support, the first support comprising at least one inorganic oxide and a zinc compound.
摘要:
Die Erfindung betrifft eine Abgasnachbehandlungseinrichtung (24) für eine Verbrennungskraftmaschine (12) eines Kraftwagens, mit wenigstens einem von Abgas der Verbrennungskraftmaschine (12) durchströmbaren ersten Katalysator (32), mit wenigstens einem von dem Abgas durchströmbaren und stromab des ersten Katalysators (32) angeordneten Partikelfilter (30) zum Rückhalten von Rußpartikeln aus dem Abgas, sowie einem mit wenigstens dem Abgas durchströmbaren zweiten Katalysator (28), welcher stromab des Partikelfilters (30) angeordnet und als SCR-Katalysator ausgebildet ist. Erfindungsgemäß ist der erste Katalysator (32) ein Kombinationskatalysator, mit - einem ersten Katalysatorteil (40), welcher als SCR-Katalysator ausgebildet ist; - einem stromab des ersten Katalysatorteils (40) angeordneten zweiten Katalysatorteil (42), welcher als Ammoniak-Schlupfkatalysator ausgebildet ist und eine Edelmetallschicht (44) mit einem ersten Edelmetallgehalt aufweist; - einem stromab des zweiten Katalysatorteils (42) angeordneten dritten Katalysatorteil (46), welcher als Oxidationskatalysator ausgebildet ist und eine Edelmetallschicht (48) mit einem zweiten Edelmetallgehalt aufweist; und - einer SCR-Schicht (50), die auf den Edelmetallschichten (44, 48) des zweiten und dritten Katalysatorteils (42, 46) angeordnet ist und sich über die gesamte Länge (L) des zweiten und dritten Katalysatorteils (42, 46) erstreckt.
摘要:
The invention provides an internal combustion engine system (1) comprising - at least one combustor (3), and - a first expander (4) arranged to receive exhaust gases from at least one of the at least one combustor (3), and to expand and extract energy from the exhaust gases, - characterized in that the system comprises a second expander (5) arranged to receive exhaust gases from the first expander (4), and to expand and extract energy from the exhaust gases.
摘要:
Systems, methods, and apparatus for managing a hydrocarbon (HC) process are disclosed herein. The apparatus includes an oxygen amount module structured to receive data indicative of a first oxygen amount on an upstream side of a catalyst component of an aftertreatment system and a second oxygen amount on a downstream side of the catalyst component, a comparison module structured to compare the first oxygen amount to the second oxygen amount, and a thermal management module communicably coupled to each of the oxygen amount module and the comparison module, wherein the thermal management module is structured to conduct a thermal management process in the aftertreatment system to selectively control hydrocarbon (HC) desorption from the catalyst component responsive to the comparison.
摘要:
An exhaust treatment system arranged for treatment of an exhaust stream, is presented. According to the present invention the exhaust treatment system comprises: - a first oxidation catalyst, arranged to oxidise compounds comprising one or more of nitrogen, carbon, and hydrogen in the exhaust stream; - a first dosage device arranged to supply a first additive into the exhaust stream; - a catalytic filter, consisting of a particulate filter with an at least partly catalytic coating with reduction characteristics, and which is arranged for catching and oxidising soot particles and for a first reduction of an amount of nitrogen oxides NOx in the exhaust stream with the use of the first additive; - a second oxidation catalyst, arranged to oxidise one or more of nitrogen oxide NO and incompletely oxidised carbon compounds in the exhaust stream; - a second dosage device arranged to supply a second additive into the exhaust stream; and - a reduction catalyst device, arranged for a second reduction of nitrogen oxides N0X in the exhaust stream, with the use of at least one of the first and second additives.
摘要:
Invention regards an apparatus (5) at least in part to be arranged in a channel (12) for exhaust gas discharged from a combustion engine (4). The apparatus (5) comprises a particulate filter (15) arranged to collect particulate matter present in the exhaust gas, a first pressure sensor (14A) positioned upstream of the particulate filter (15) and a second pressure sensor (14B) positioned downstream of the particulate filter (15). The pressure sensors (14A, 14B) are configured to provide information on the exhaust gas pressure so that a differential pressure across the particulate filter (15) is determined. The apparatus further comprises a particulate matter sensor (17) positioned downstream of the particulate filter (15) and comprising ionizing means (17A) configured to ionize the particulate matter so that an ion current is created in said channel (12) when the exhaust gas carrying the particulate matter is ionized, and detecting means (17B) located downstream of the ionizing means (17A) in said channel (12). The detecting means (17B) are configured to detect the ion current and, in response to the detected ion current, generate a signal comprising information on the particulate matter carried by the exhaust gas. The invention also regards a thereto related method.
摘要:
Ceramic candle filter and use of the filter in the removal of particulate matter in form of soot, ash, metals and metal compounds, together with hydrocarbons and nitrogen oxides being present in process off-gas or engine exhaust gas, the filter comprises a combined SCR and oxidation catalyst being arranged on the dispersion side and within wall of the filter; and a palladium comprising catalyst arranged on the permeation side and within wall of the filter facing the permeation side.