| 摘要 |
An injection hole inlet is disposed at the upstream side face of the injection hole plate in such a way that, assuming thatαdenotes the angle between respective lines obtained by vertically projecting a straight line that passes through the center of the injection hole inlet and the center of the valve seat and the major axis of the injection hole inlet onto a perpendicular plane that passes through the center of the injection hole inlet and is perpendicular to the center axis of the valve seat and assuming thatβdenotes the angle between respective lines obtained by vertically projecting the straight line that passes through the center of the injection hole inlet and the center of the valve seat and the minor axis of the injection hole inlet onto the perpendicular plane,α<βis satisfied.
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