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    • 10. 发明申请
    • FUEL INJECTION DEVICE AND CONTROL METHOD THEREFOR
    • 燃油喷射装置及其控制方法
    • WO2008062292A2
    • 2008-05-29
    • PCT/IB2007/003589
    • 2007-11-22
    • TOYOTA JIDOSHA KABUSHIKI KAISHAOTSUBO, YasuhikoKATAYAMA, Masanobu
    • OTSUBO, YasuhikoKATAYAMA, Masanobu
    • F02D41/40F02D23/02F02D41/18
    • F02D41/405F02D41/0007F02D41/029F02D41/10F02D41/18F02D2200/0402F02D2200/0406Y02T10/144Y02T10/44
    • This device is applied to an internal combustion engine that has a fuel injection valve for injecting fuel directly into the combustion chamber, a supercharger and an exhaust purification device. As a fuel injection from the fuel injection valve, a post-injection is executed separately from the fuel injection for torque generation. The device includes an air amount sensor provided on the intake passageway upstream of the supercharger, and a pressure sensor provided on the intake passageway downstream of the supercharger. A correction term Kg is calculated based on the rate of change ΔP of the air pressure P detected by the pressure sensor (S 103). An upper-limit injection amount Qgd is set based on the engine rotation speed NE, the passageway air amount GAp detected by the air amount sensor, the correction term Kg and a main injection amount Qm (S104, S105). Using the upper-limit injection amount Qgd, a target post-injection amount is restricted (S106, S107).
    • 该装置应用于具有用于将燃料直接喷射到燃烧室中的燃料喷射阀的内燃机,增压器和排气净化装置。 作为来自燃料喷射阀的燃料喷射,与用于转矩产生的燃料喷射分开执行后喷射。 该装置包括设置在增压器上游的进气通道上的空气量传感器和设置在增压器下游的进气通道上的压力传感器。 基于由压力传感器检测的空气压力P的变化率ΔP计算校正项Kg(S103)。 基于发动机转速NE,由空气量传感器检测到的通道空气量GAp,校正项Kg和主喷射量Qm来设定上限喷射量Qgd(S104,S105)。 使用上限喷射量Qgd,限制目标后喷射量(S106,S107)。