Fuel injector with integrated flow restrictor
AssigneeRobert Bosch GmbH
InventorJaroslaw Hlousek
Life of this patent
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Abstract
The invention relates to a fuel injection device for an internal combustion engine, having a common high-pressure collection chamber (common rail) that can be filled via a high-pressure pump. The high-pressure collection chamber communicates with injection valves, each of which includes a control valve embodied as a 3/2-way valve. Control faces are provided on the control part, which connect a high-pressure collection supply line to inflow lines to the injection nozzle or with a relief line, and the control part is actuatable by a controlled outflow line. The control part includes a throttle element, which via a bore communicates with a hollow chamber.
Claims9
In a fuel injection device for an internal combustion engine, having a common high-pressure collection chamber that can be filled via a high-pressure pump and that communicates with injection valves, which contain a control part (2) embodied as a 3/2-way valve which includes control faces (5, 6, 19) that connect a high-pressure collection supply line (18) with an injection line (9, 9′) or with a relief line (4), the control part (2) being actuatable by means of a controlled outflow line (23), the improvement wherein the control part (2) includes a throttle element (10), which communicates with a hollow chamber (7) via a bore (11).
Dependencies are inferred from the claim text.