| 摘要 |
PROBLEM TO BE SOLVED: To provide an accumulator fuel injection device with a reduced error in injection quantity. SOLUTION: An injection period after correction TQMF' is calculated as a fuel injection period for injecting fuel from a fuel injection valve 2. The injection period after correction TQMF' is such a period that a temperature correction amountΔTQM is added to a correction period TQMF calculated from command injection quantity QFIN and fuel pressure (NPC<SB>n</SB>or NPCM<SB>n</SB>), and the temperature correction amountΔTQM is calculated based on fuel temperature and command common rail pressure PFIN. Therefore, even if propagation time until pressure is propagated from a high pressure pump 7 to a common rail 4 is changed by the fuel temperature, an error between the command injection quantity QFIN and the injection quantity to be actually injected is reduced. COPYRIGHT: (C)2011,JPO&INPIT |
