Catalyst assembly with injection section

• Main Authors: Wolf, Tobias, Kermorvant, Sophie, Többen, Dr., Heike, Cazeneuve, Laurent, Ferront, Hervé, Rilly, Sophie
• Format: Patent
• Language: English; French; German
• Published: 15.05.2019
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; WEAPONS

An injection section (12) of an exhaust system for an internal combustion engine, with a channel (13) for guiding an exhaust gas flow (3), with an injection port (14), laterally on the channel to which a liquid or gas injector (15) can be connected, and with an injection chamber (16), formed in the channel in the area of the injector port. The chamber is defined by a perforated, first flow through partition (17), arranged in the channel upstream of the injector port relative to the exhaust gas flow and, and by a perforated, second flow through partition, arranged in the channel downstream of the injector port relative to the exhaust gas flow. Improved mixing and/or evaporation is achieved with the perforation portion of the first partition generating at least two partial exhaust gas flows (20, 21), which form two mutually opposite flow swirls (22, 23).