公开(公告)号：EP3899284A1

公开(公告)日：2021-10-27

申请号：EP19804681.5

申请日：2019-11-12

申请人： Robert Bosch GmbH

发明人： KURZ, Michael

IPC分类号： F04D23/00 ,  F04D29/40 ,  F04D29/02 ,  F04D25/06

公开(公告)号：EP3394418A1

公开(公告)日：2018-10-31

申请号：EP16793833.1

申请日：2016-11-07

申请人： Robert Bosch GmbH

发明人： KURZ, Michael

IPC分类号： F02M45/08 ,  F02M51/06 ,  F02M43/04

CPC分类号： F02M45/086 ,  F02M43/04 ,  F02M51/0664 ,  F02M51/0671

摘要： The invention relates to a fuel injector for injecting two liquid and/or gaseous fuels with an injector housing (1), comprising a nozzle body (2) and a valve body (3). A first nozzle needle (7), arranged such that it can move in a stroke-like manner, is arranged in said injector housing (1) for opening and closing an injection cross-section (27). The first nozzle needle (7) is thereby designed as a hollow needle in which a second nozzle needle (8), arranged such that it can move in a stroke-like manner, is arranged. Same cooperates with an inner nozzle seat (25) formed in the first nozzle needle (7) to open and close at least one injection opening (35). The first nozzle needle (7) and the second nozzle needle (8) border an injection chamber (20) that can be filled with fuel via a supply throttle (36). In addition, in an upper switch position, the second nozzle needle (8) is in contact with a seal seat (38) and thereby separates a connection between the injection chamber (20) and the supply throttle (36).

公开(公告)号：EP1373713B1

公开(公告)日：2009-07-01

申请号：EP02726070.2

申请日：2002-03-22

申请人： ROBERT BOSCH GMBH

发明人： KURZ, Michael ,  WAHR, Gerd

IPC分类号： F02M61/16 ,  F02M61/10

CPC分类号： F02M61/168 ,  F02M61/16

摘要： The invention relates to a fuel injection device (10), especially an injector, for internal combustion engines. Said device comprises a base (12), an injection housing (14) and a tensioning device (48). Said tensioning device (48) includes at least one adjusting nut (16) with an annular link (32) and an annular collar (40) on the injection housing (14). The tensioning device (48) axially braces the injection housing (14) with the base (12). The injection device further comprises a fuel inlet (24) and at least one valve element (22). In order to improve sealing between the base (12) and the injection housing (14), the tensioning device (48) is provided with at least one annular surface facing the annular link (32) of the adjusting screw (16) and being convex in the manner of a spherical segment surface (41).

公开(公告)号：EP1611344A1

公开(公告)日：2006-01-04

申请号：EP03753328.8

申请日：2003-09-29

申请人： ROBERT BOSCH GMBH

发明人： KURZ, Michael ,  BRENK, Achim

IPC分类号： F02M63/06 ,  F02M63/02 ,  F02M47/02

CPC分类号： F02M47/027 ,  F02M45/12 ,  F02M63/0225 ,  F02M63/06

摘要： The invention relates to a fuel injection arrangement for internal combustion engines, said arrangement comprising an accumulator for storing fuel under pressure, and at least one stroke-controlled injector which is connected to the accumulator by means of a high-pressure line for the fuel, the accumulator and the high-pressure line being part of a high-pressure system. The inventive arrangement is characterised in that a device is provided for removing fuel from the high-pressure system and for deriving fuel in a low-pressure region when the injection valve is closed, so that when fuel is removed, a vibration of the fuel is generated in the high-pressure line (14) associated with the injector (1). This enables the injection to begin only when vibration generated in the hydraulic system, between the accumulator and the injector, creates pressure on the injector which is higher than the pressure dissipated when the valve is opened.

摘要翻译： 用于内燃机的燃料喷射装置技术领域本发明涉及一种用于内燃机的燃料喷射装置，所述装置包括用于储存处于压力下的燃料的储存器，以及至少一个行程控制喷射器，其通过用于燃料的高压管线连接到储存器， 蓄能器和高压管线是高压系统的一部分。 本发明的装置的特征在于，提供一种装置，用于在喷射阀关闭时从高压系统中去除燃料并且在低压区域中得到燃料，从而当燃料被去除时，燃料的振动是 在与喷射器（1）相关联的高压管线（14）中产生。 这使得只有在蓄压器和喷油器之间的液压系统中产生的振动在喷油器上产生的压力高于阀打开时所消耗的压力时才能开始喷油。

公开(公告)号：EP3794236A1

公开(公告)日：2021-03-24

申请号：EP19711317.8

申请日：2019-03-13

申请人： Robert Bosch GmbH

发明人： KURZ, Michael

IPC分类号： F04D23/00 ,  F04D29/059 ,  F04D29/28

公开(公告)号：EP3286424B1

公开(公告)日：2019-06-12

申请号：EP16711260.6

申请日：2016-03-21

申请人： Robert Bosch GmbH

发明人： KURZ, Michael

IPC分类号： F02M21/02

公开(公告)号：EP3126663A1

公开(公告)日：2017-02-08

申请号：EP15712356.3

申请日：2015-03-25

申请人： Robert Bosch GmbH

发明人： KURZ, Michael

IPC分类号： F02M45/08 ,  F02M51/06

CPC分类号： F02M45/086 ,  F02M51/0671 ,  F02M2200/46

摘要： The invention relates to a fuel injector (10; 10a; 10b), having an injector housing (11), in which a high pressure chamber (28) is configured, having an injection element (30) which is arranged in the injector housing (11) and can be raised and lowered, in the form of a nozzle needle (38) for at least indirect opening and closing of at least one injection opening (24) which is configured in the injector housing (11), and having an armature (32) which is arranged in an operative connection with the injection element (30), as a constituent part of a magnetic actuator. It is provided according to the invention that the injection element (30) is arranged radially within a needle guide sleeve (40; 40b), that the needle guide sleeve (40; 40b) is arranged in the injector housing (11) such that it can be raised and lowered, that the needle guide sleeve (40; 40b) forms a sealing seat (58) in the direction of the at least one injection opening (24) in a lowered position and releases a throughflow of fuel in the direction of the at least one injection opening (24) in a raised position, and that the needle guide sleeve (40; 40b) has a blind hole-shaped receptacle (41) for the nozzle needle (38), wherein an outflow bore (42) is provided on the bottom of the receptacle (41), which outflow bore (42) can be closed by means of the nozzle needle (38) by way of a formation of a sealing seat (57) and is connected hydraulically to the at least one injection opening (24).

摘要翻译： 本发明涉及具有喷射器壳体（11）的燃料喷射器（10; 10a; 10b），其中构造有高压腔室（28），该喷射器壳体具有布置在喷射器壳体（30）中的喷射元件（30） 并且可以以用于至少间接地打开和关闭在喷射器壳体（11）中构造的至少一个喷射开口（24）的喷嘴针（38）的形式升高和降低，并且具有电枢 （32），其作为磁性致动器的组成部分布置成与所述注入元件（30）可操作地连接。 根据本发明设置，注射元件（30）径向布置在针引导套筒（40; 40b）内，使得针引导套筒（40; 40b）布置在注射器壳体（11）中，使得它 （40; 40b）在下降位置沿至少一个喷射开口（24）的方向形成密封座（58），并释放燃料的通流方向 所述至少一个注射开口（24）处于升起位置，并且所述针引导套筒（40; 40b）具有用于所述喷嘴针（38）的盲孔形容纳部（41），其中流出孔（42） 设置在容器（41）的底部上，该流出孔（42）可以借助于形成密封座（57）借助于喷嘴针（38）封闭并且液压连接到至少一个 一个注射口（24）。

公开(公告)号：EP1913251A1

公开(公告)日：2008-04-23

申请号：EP06763522.7

申请日：2006-06-06

申请人： ROBERT BOSCH GMBH

发明人： KURZ, Michael

IPC分类号： F02M51/06 ,  F02M47/02 ,  F02M61/20

CPC分类号： F02M47/027 ,  F02M51/0603 ,  F02M61/205 ,  F02M2200/304

摘要： The present invention relates to an injection nozzle (1) for an internal combustion engine, in particular in a motor vehicle, comprising a nozzle body (2) which has at least one spray hole (3), a nozzle needle (5) which is mounted in the nozzle body (2), so as to be adjustable in terms of stroke, for controlling an injection of fuel through the at least one spray hole (3), and a transmitter piston (15) which is drive-coupled to an actuator (13) and has a transmitter face (16) which delimits a transmitter space (17). According to the invention, the nozzle needle (5) has a control face (10) which delimits a control space (11); in order to dampen the movement of the nozzle needle (5) into its needle seat (8) as the nozzle needle (5) closes, a damping piston (18) is arranged in the nozzle body (2) so as to be adjustable in terms of stroke, said damping piston (18) separating the control space (11) from the transmitter space (17); and in addition, a damping path (21) is provided which hydraulically connects the transmitter space (17) to the control space (11) in a throttled manner.

摘要翻译： 本发明涉及一种用于内燃机的喷射喷嘴（1），尤其是在机动车辆中的喷射喷嘴（1），其包括具有至少一个喷射孔（3）的喷嘴体（2），喷嘴针（5） ，其安装在所述喷嘴体（2）中，以便在行程方面可调节，用于控制通过所述至少一个喷射孔（3）的燃料喷射;以及变速器活塞（15），其与驱动器 致动器（13）并具有限定发射器空间（17）的发射器面（16）。 根据本发明，喷嘴针（5）具有界定控制空间（11）的控制面（10）; 为了在喷嘴针阀（5）关闭时抑制喷嘴针（5）进入其针座（8）的运动，在喷嘴体（2）中设置缓冲活塞（18） 所述阻尼活塞（18）将所述控制空间（11）与所述变送器空间（17）分开; 并且另外提供了阻尼路径（21），该阻尼路径（21）以节流的方式将变送器空间（17）液压地连接到控制空间（11）。