| 摘要 |
A fuel injector for the direct injection of fuel into the combustion chamber of an internal combustion engine includes a valve needle situated in a nozzle body, in which the valve needle is actuable by an actuator and acted upon by a restoring spring in such a manner that a valve closure member, which is in operative connection to the valve needle and faces the combustion chamber, is kept in sealing contact on a valve seat surface in the non-actuated state of the actuator. The valve needle is hollow at least in a downstream partial region and is sealed off from the combustion chamber at the front-side.
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