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发明公开
CN108431400A 燃料喷射阀 无效 - 驳回

燃料喷射阀
摘要：
本发明涉及一种燃料喷射阀，其优点在于阀座体(5)的特别高的结构强度和抗疲劳强度。该燃料喷射阀(1)包括能激励的用于操纵阀关闭体的促动器并且包括喷射开口(7)，所述阀关闭体与构造在阀座体(5)上的阀座面(6)一起构成密封座，所述喷射开口构造在所述阀座面(6)下游，其中，所述喷射开口(7)安置在所述阀座体(5)的沿喷射方向圆顶状向外伸出的中心区域(44)。所述阀座体(5)的圆顶状轴向凸起的所述中心区域(44)在所有喷射开口(7)的汇合区域的径向外部终止在加深的沉入部(47)中，从所述沉入部出发径向向外地衔接有所述阀座体(5)的再次轴向凸起的边缘区域(48)，使得在横截面中构成阀座体(5)的总体上波纹形的圆顶轮廓。所述燃料喷射阀特别适合于将燃料直接喷入到压缩混合气的外源点火内燃机的燃烧室中。
摘要（英）：

A fuel injection valve according to the invention is characterized by a particularly high structural strength and vibration resistance of the valve seat body (5). The fuel injection valve (1) comprises an excitable actuator for actuating a valve closing body, which forms a sealing seat together with a valve seat surface (6) formed on the valve seat body (5), and spraying openings (7) that are formed downstream of the valve seat surface (6), wherein the spraying openings (7) are introduced in a middle region (44) of the valve seat body (5) projecting outwards in a peak-like manner in the spraying direction. The peak-like axially-projecting middle region (44) of the valve seat body (5) ends radially outside the mouth regions of all the spraying openings (7) in a peripheral sunken recess (47), from which an axially projecting edge region (48) of the valve seat (5) connects radially outwards, so that in cross-section a wave-like peak contour of the valve seat body (5) is formed. The fuel injection valve is suitable in particular for the direct injection of fuel into a combustion chamber of a mixture-compressing external spark-ignition combustion engine.

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