EXHAUST GAS RECIRCULATION CONTROL DEVICE FOR LEAN BURN ENGINE

• Main Author: ITOYAMA HIROYUKI
• Format: Patent
• Language: English
• Published: 02.04.1996
• Edition: 6
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; 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; MECHANICAL ENGINEERING; 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; WEAPONS

PURPOSE: To reduce an influence exercised on combustion stability by humidity of the atmosphere on a lean operation condition, in a lean burn engine. CONSTITUTION: In a lean burn engine, an exhaust gas recirculation control device for the lean burn engine comprises a target exhaust gas recirculation rate setting means (f) on the lean side to set a target exhaust gas recirculation rate on the lean operation condition to a range where an influence exercised on lean combustion by humidity is removed; and an exhaust gas recirculation means (g) to effect recirculation of exhaust gas to an engine so that an exhaust gas recirculation rate attains a set target value.