| 摘要 |
PURPOSE:To make it possible to generate large output due to combustion of plenty of fuel after ignition by operating an injection starting command mean after fuel is pressed in an accumulator fuel injection device so as to open an ignited fuel injection starting command valve then open a main injection starting command valve. CONSTITUTION:In a device which has a fuel tank 1, a metering unit M and a unit injector U composed of a fuel injection pump 6 and an accumulator fuel injection device 7 and the like, are provided an injection starting command valve for ignition 21 and a decompression chamber for ignited fuel injection 22 which are arranged in the unit injector U, and an injection starting command mean 18 arranged in the metering unit M. Fuel for ignition is injected by means of that the command valve 21 is opened at the defined injection starting time and the inner pressure of an injection-valve closing pressure chamber 12 is depressurized to the decompression chamber 22 so as to open an injection valve 15. In addition, a main injection starting command valve 10 is opened after a defined ignition lag time and controlled so as to perform main fuel injection.
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