FUEL VAPOR CONTROL SYSTEM AND CONTROL METHOD

• Main Author: PARK YONG-JUNG
• Format: Patent
• Language: English
• Published: 19.11.2009
• 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; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDEDFOR; STARTING OF COMBUSTION 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; WEAPONS

PROBLEM TO BE SOLVED: To provide a fuel vapor control system and a control method can improve oxygen preservation capacity of a purifier without increasing fuel consumption at the restart of a vehicle and improve purification capacity for nitrogen oxide of the purifier, in a vehicle adopting an idling stop and go system. SOLUTION: When oxygen preservation capacity of the purifier is an established value or below when restarting an engine from a stopped state, fuel vapor supplied to an intake passage is effectively used by adjusting an amount of fuel (Fr) injected to a combustion chamber at the restart according to a second amount of fuel (Fa) added to purge the purifier and a first amount of fuel (Va) included in fuel vapor supplied to the intake passage by collecting it from a fuel tank, and the purification capacity for the nitrogen oxide of the purifier is improved by reducing fuel consumption. COPYRIGHT: (C)2010,JPO&INPIT