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1. 发明申请

WO2016071853A1 FUEL ELECTRO-INJECTOR ATOMIZER FOR A FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
标题翻译：用于内燃机燃油喷射系统的燃油电喷射器
公开(公告)号：WO2016071853A1
公开(公告)日：2016-05-12
申请号：PCT/IB2015/058529
申请日：2015-11-04
申请人： C.R.F. SOCIETA' CONSORTILE PER AZIONI
发明人： STUCCHI, Sergio , DE MICHELE, Onofrio , RICCO, Raffaele , GARGANO, Marcello , ALTAMURA, Chiara
IPC分类号： F02M61/08 , F02M61/12
CPC分类号： F02M61/08 , F02M51/0603 , F02M61/12 , F02M61/1873 , F02M61/1893 , F02M2200/16 , F02M2200/703 , F02M2200/705
摘要： An atomizer (10) of a fuel electro-injector (1) for a fuel injection system for an internal combustion engine having a passage (13) that extends along a longitudinal axis (5) and includes a guide hole (46); the atomizer (10) has a sealing seat (21) defined by a chamfer or a fillet, which joins an cylindrical surface (41) inside the passage (13) and an external front surface (40); the atomizer (10) is equipped with a needle (27) having a first slider portion (25) coupled in an axially sliding manner to the guide hole (46), so as to define a dynamic seal and be axially movable under the thrust of an electro-actuator (32) from a closed position, in which a head (20) of the needle (27) is coupled to the sealing seat (21) to close the outlet and define a static seal; the diameter (D) of the guide hole (46) is between 2.5 e 3.3 mm, while the difference between the average diameter of the sealing seat (21) and the diameter of the guide hole (46) is such as to generate a maximum axial imbalance of 50 N, directed in the opening direction, due to the effect of the fuel pressure around the needle (27) when the latter is positioned in the closed position.
摘要翻译：一种用于内燃机的燃料喷射系统的燃料电动喷射器（1）的雾化器（10），具有沿纵向轴线（5）延伸并包括导向孔（46）的通道（13）; 雾化器（10）具有由倒角或圆角限定的密封座（21），其连接通道（13）内部的圆柱形表面（41）和外部前表面（40）; 雾化器（10）配备有具有第一滑动部分（25）的针（27），所述第一滑动部分（25）以轴向滑动的方式联接到引导孔（46），以便限定动态密封件，并且可以在电动致动器（32），其中所述针（27）的头部（20）联接到所述密封座（21）以闭合所述出口并限定静态密封; 引导孔（46）的直径（D）在2.5e 3.3mm之间，而密封座（21）的平均直径与引导孔（46）的直径之间的差异能够产生最大由于在针（27）周围的燃料压力位于关闭位置时，由于燃料压力的影响，导向于打开方向的50N的轴向不平衡。

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