| 摘要 |
PURPOSE:To make the wide use of a fuel injection device possible independently of the size of an engine or the like by assembling both an injection time determining mechanism and an injection time adjusting spark advance device in the fuel injection device. CONSTITUTION:A pressure relief valve 19 for determining injection time and a spark advance valve 20 for adjusting injection time are connected in order to the valve closing pressure accumulating chamber 85 of a fuel injector 29 through a fuel injection pump 26 and a cutoff valve 25. A pressure relief valve 19 is composed so that passages 59 for a pressure relief valve body 57 may communicate with the introducing port 24 of a valve box 56 with timing control made on a crankshaft. A spark advance valve 20 is composed so that the passages 59 may be plurally provided along the rotational direction of the valve body 57, and moreover the passage 62 for spark advance of a spark advance valve body 61 may selectively communicate with the plural passages 59. In addition to that, the spark advance valve body 61 is energized by a spark regress energizing means 65 to the side of spark regress, and by fuel pressure in a spark advance pressure chamber 63 communicating with pressure regulating device 12 to the side of spark advance.
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