Arrangement in fuel injection apparatus
AssigneeWäRtsilä Finland Oy
InventorsDavid Jay, Daniel Paro
Life of this patent
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Abstract
An arrangement in the fuel injection system for controlling the fuel injection, the arrangement comprising a body part with a space arranged therein, through which space the fuel to be injected flows during operation, the space further having an inlet opening and an outlet opening therein. The arrangement further comprises a piston means, arranged movably in the space and a flow path for creating a flow connection between the fuel inlet and the fuel outlet openings. The flow path comprises at least one throttling portion opening into the space of the body part, the cross-sectional flow area of the throttling portion being defined by the relative positions of the piston means and the body part.
Claims9
1-8. (canceled)
An arrangement in a common rail fuel injection apparatus for controlling the fuel injection, the arrangement comprising a body part into which is arranged a space, through which the fuel to be injected in operation flows, a fuel inlet opening and a fuel outlet opening opening into the space between a movably arranged piston means and flow connection formed by a flow path between the inlet opening and the outlet opening, wherein the flow path comprises at least one throttling portion opening into the space in the body part, the cross-sectional flow area of which throttling portion is arranged to be increasing while the piston means is moving in respect to the body part at the beginning of the injection.
Dependencies are inferred from the claim text.