EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

• Main Authors: HIROTA SHINYA, OBATA KIYOSHI, KATO KENJI, ARAKI YASUSHI, IGUCHI SATORU, KIHARA TETSUO, ASANUMA TAKAMITSU
• Format: Patent
• Language: English
• Published: 27.06.1995
• Edition: 6
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; 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; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

PURPOSE:To efficiently purify exhaust by operating an NOx absorbent properly regenerated in accordance with change in its absorbing ability, preventing an exhaust nature from worsening due to decrease in the absorbing ability of the NOx absorbent, and also effectively applying the absorbing ability of the NOx absorbent. CONSTITUTION:A NOx sensor 20 is arranged in the downstream of an NOx absorbent 18 ion an exhaust passage 17 of an internal combustion engine, and based on detected concentration of an NOx component, when decided worsening NOx absorbing ability of the NOx absorbent 18, the NOx absorbent is regenerated.