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    • 7. 发明专利
    • Closure bolt for injector
    • 注射器封闭螺栓
    • JP2013234661A
    • 2013-11-21
    • JP2013097363
    • 2013-05-07
    • Robert Bosch Gmbhローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング
    • GRASPEUNTNER CHRISTIANPASEDACH SVEN
    • F02M55/02F02M55/00
    • F02M63/0003F02M55/005F02M55/025F02M61/165F02M63/0054F02M63/0078F02M63/0205F02M2200/18
    • PROBLEM TO BE SOLVED: To easily materialize geometry of a throughflow limiter without impairing pressure resistance properties in a pressure compensation region of a closure bolt.SOLUTION: A closure bolt 5 for an injector of a modular common-rail fuel injection system includes at least one high-pressure connection part 20 for high-pressure fuel and a bolt-like portion 4 which is configured to be inserted into an opening 3 of the injector and which has a first, particularly conical, sealing surface 6 for closing the opening 3 in a high-pressure-tight manner. The bolt-like portion 4 has a high-pressure bore 11 which is hydraulically connected to the high-pressure connection part 20 and which is in communication with the injector. The closure bolt further includes a throughflow limiter 16 configured to limit the flow rate of fuel delivered into the injector. The bolt-like portion 4 has an insert 24 in which the throughflow limiter 16 is formed and which bears the first sealing surface 6.
    • 要解决的问题:容易地实现通流限制器的几何形状,而不会损害闭合螺栓的压力补偿区域中的耐压特性。解决方案:用于模块式共轨燃料喷射系统的喷射器的闭合螺栓5包括至少一个 用于高压燃料的高压连接部分20和螺栓状部分4,其构造成插入到喷射器的开口3中,并且具有第一特别是锥形的密封表面6,用于将开口3封闭在一个 高压紧密的方式。 螺栓状部分4具有液压连接到高压连接部分20并与喷射器连通的高压孔11。 封闭螺栓还包括通流限制器16,其被配置成限制输送到喷射器中的燃料的流速。 螺栓状部分4具有插入物24,其中形成有通流限制器16,并且承载着第一密封表面6。