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    • 1. 发明公开
    • EINSPRITZEINRICHTUNG
    • EP3155253A1
    • 2017-04-19
    • EP15726097.7
    • 2015-05-27
    • Robert Bosch GmbH
    • HAEBERER, RainerSTOEBERL, ThorstenWELTING, Dirk
    • F02M61/16F02M61/08F02M61/18B01D53/94F01N3/20
    • F01N3/2066F01N2610/02F01N2610/1453Y02T10/24
    • The invention relates to an injection device (1), in particular for an exhaust aftertreatment system of an internal combustion engine, comprising a pressure-controlled, outward-opening fuel injection valve (2) that includes an axially movable valve piston (6) which penetrates a flow opening (7) in a valve body (5) and one end of which has a valve tip (9), further comprising a valve seat (8) associated with the flow opening (7), and at least one spring element (11) which urges the valve piston (6) comprising the valve tip (9) against the valve seat (8) so that the flow opening (7) is closed; the valve tip (9) is axially movable inside a flow chamber (15) formed by the valve body (5) and by an injection orifice disk (14) that includes a plurality of injection ports (19).
    • 本发明涉及一种特别是用于内燃机排气后处理系统的注射装置(1),其包括压力控制的向外开启的燃料喷射阀(2),其包括可轴向移动的阀活塞(6),该活塞 穿透阀体(5)中的流动开口(7)并且其一端具有阀尖(9),还包括与流动开口(7)相关联的阀座(8),以及至少一个弹簧元件 (11),其将包括阀头(9)的阀活塞(6)压靠在阀座(8)上,使得流动开口(7)关闭; 阀尖(9)可在由阀体(5)形成的流动室(15)和包括多个喷射口(19)的喷射孔盘(14)内轴向移动。