COMPRESSION IGNITION INTERNAL COMBUSTION ENGINE

• Main Authors: YANAGIHARA HIROMICHI, OBATA KIYOSHI
• Format: Patent
• Language: English
• Published: 31.03.1997
• Edition: 6
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; 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; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To prevent a large quantity of soot from being generated when NOx is discharged from an NOx absorbent and keep the average air-fuel ratio in a combustion chamber rich. SOLUTION: An NOx absorbent 17 absorbing NOx when the air-fuel ratio of the flowing-in exhaust gas is lean and discharging the absorbed NOx when the air-fuel ratio of the flowing-in exhaust gas is rich is arranged in an engine exhaust passage. When NOx is to be discharged from the NOx absorbent 17, the average air-fuel ratio in a combustion chamber 3 is switched from lean to rich, and the injection fuel containing oxygen is used at least at this time.