| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel control system for a gaseous fuel internal combustion engine capable of preventing oil consumption and wasetful fuel supply at the time of deceleration even when friction of the gaseous fuel internal combustion engine is large. SOLUTION: When determining that a determined air volume GACRT exceeds a standard air volume EGAUP by fuel control at the time of fuel cut for deceleration, that is, when the friction of the LPG engine 1 is large (S14:YES), an opening degree PMTUP of a volume-raised ISCV is corrected to a corrected value EPMTUP1 smaller than an initial value EPMTUP0 (S15). Then, volume-raised control for an opening degree PMT of the ISCV is performed so that the opening degree PMTUP=EPMTUP1 of the volume-raised ISCV established at the step S15 is added (PMT=PG+EPMTUP1) to the opening degree PMT=PG of the ISCV established at the step S11 (S16). COPYRIGHT: (C)2008,JPO&INPIT
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