ENGINE CONTROL DEVICE

• Main Authors: NAKAZAWA, SATOSHI, KONDO, KOJI, KANAYAMA, KUNIKI
• Format: Patent
• Language: English; French; German
• Published: 21.10.2015
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; 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; INTERNAL-COMBUSTION PISTON ENGINES; 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

A first recirculation system (40) includes a first adjuster (45,14) to adjust the exhaust-gas flow rate in a first path (41) connecting an upstream position of a turbine (32) of a VG turbocharger (30) to a downstream position of a compressor (31). A second recirculation system (50) includes a second adjuster (55,13) to adjust the exhaust-gas flow rate in a second path (51) connecting a downstream position of the turbine (32) to an upstream position of the compressor (31). A recirculation controller (63) switches between a single use activating the first or second recirculation system (40,50) and a combination use activating both systems (40,50) by controlling the adjusters (45,14,55,13). A pressure controller (64) executes feedback control of an intake-system pressure through adjusting the opening of vanes (33), and executes feedforward control without the feedback control during a predetermined period from the switching from the single use to the combination use.