| 摘要 |
A fuel injector for the direct injection of fuel into a combustion chamber of an internal combustion engine includes an energizable actuator, a valve needle, which is in operative connection with the actuator and acted upon by a restoring spring in a closing direction to actuate a valve-closure member, which, together with a valve-seat surface formed on a valve-seat body, forms a sealing seat; and includes at least two spray-discharge orifices which are formed in the valve-seat body. At an outer side, facing the combustion chamber of the internal combustion engine, of the valve-seat body, a coating is formed and/or the maximum number of spray-discharge orifices is eight and/or a clearance between the valve-closure member and the valve-seat body is smaller than 20 mum and/or the spray-discharge orifices widen in a spray-discharge direction of the fuel. |
