公开(公告)号：EP1654454A1

公开(公告)日：2006-05-10

申请号：EP04738751.9

申请日：2004-06-22

申请人： ROBERT BOSCH GMBH

发明人： BOEHLAND, Peter ,  KANNE, Sebastian ,  NENTWIG, Godehard

IPC分类号： F02M45/08 ,  F02M47/02 ,  F02M63/00

CPC分类号： F02M63/0005 ,  F02M45/086 ,  F02M47/027 ,  F02M63/0007 ,  F02M2200/46

摘要： A fuel injection device (20) for a combustion engine comprises a first valve element (36) with a pressure surface (38) that acts in an opening direction. An impinging device (50) acts in a closing direction. A second valve element (34) comprises a hydraulic control surface (58), which acts in the closing direction and which delimits a hydraulic control space (60). A corresponding impinging device acts in an opening direction. In addition, a high-pressure connection (24) is provided. The invention provides that the fuel injection device (20) has an additional valve device (66) that, in a first final position, connects the pressure space (40) only to the low pressure connection (28) and connects the control space (60) only to the high pressure connection (24). In a second final position, the additional valve device (66) connects the pressure space (40) only to the high pressure connection (24) and separates the control space (60) essentially from the high pressure connection (24). In an intermediate position, the pressure space (40) is connected only to the high pressure connection (24), and the control space (60) is simultaneously connected to the high pressure connection (24) and to the low pressure connection (28).

摘要翻译： 一种用于内燃机的燃料喷射装置（20）包括具有沿打开方向作用的压力表面（38）的第一阀元件（36）。 撞击装置（50）沿关闭方向作用。 第二阀元件（34）包括液压控制表面（58），该液压控制表面（58）在关闭方向上作用并限定液压控制空间（60）。 相应的撞击装置在打开方向上起作用。 另外，提供高压连接（24）。 本发明规定，燃料喷射装置（20）具有附加的阀装置（66），该附加的阀装置在第一最终位置仅将压力空间（40）连接至低压接头（28）并且将控制空间（60 ）仅限于高压连接（24）。 在第二最终位置中，附加阀装置66将压力空间40仅连接到高压连接部24并且将控制空间60基本上与高压连接部24分开。 在中间位置，压力空间（40）仅连接到高压接头（24），并且控制空间（60）同时连接到高压接头（24）和低压接头（28） 。

公开(公告)号：EP1654453A1

公开(公告)日：2006-05-10

申请号：EP04738750.1

申请日：2004-06-22

申请人： ROBERT BOSCH GMBH

发明人： KANNE, Sebastian ,  NENTWIG, Godehard

IPC分类号： F02M45/08 ,  F02M51/06 ,  F02M61/18

CPC分类号： F02M45/086 ,  F02M51/0603 ,  F02M61/18 ,  F02M2200/215 ,  F02M2200/46 ,  F02M2200/704

摘要： An injector for fuel injection systems of combustion engines, particularly direct injection diesel engines, comprises a piezo actuator (16), which is placed inside an injector body (10) and which, via first spring means (35), is held in contact with the injector (10) and with a sleeve-like intensifier plunger (33). In addition, a nozzle body (20) is provided, which is connected to the injector body (10), has at least one nozzle discharge opening (26, 27), and inside of which a graduated (first) nozzle needle (21) is guided in an axially displaceable manner, and (second) spring means (54) are provided, which are placed inside the intensifier plunger (33) and which, together with the injection pressure acting on the rear side on the (first) nozzle needle (21), hold the (first) nozzle needle (21) in the closed position. In addition, the injector comprises an (outer) control space (47), which is formed at the nozzle needle-side end of the intensifier plunger (33), and which is connected, via at least one leakage gap, to a fuel supply (18) that is under injection pressure. The (first) nozzle needle (21) is displaced in the opening direction (36) by the fuel located inside the control space (47).

摘要翻译： 用于内燃机的燃料喷射系统，尤其是直接喷射式柴油机的喷射器包括压电致动器（16），该压电致动器设置在喷射器本体（10）内并且经由第一弹簧装置（35）保持与 注射器（10）和套筒状增强器柱塞（33）。 此外，提供连接到喷射器本体（10）的喷嘴本体（20），其具有至少一个喷嘴排出口（26,27），并且在其内部具有刻度（第一）喷嘴针（21） （第二）弹簧装置（54），其设置在增强器柱塞（33）内部，并且与作用在（第一）喷嘴针的后侧上的喷射压力一起 （21），将（第一）喷嘴针（21）保持在关闭位置。 此外，喷射器包括形成在增压器柱塞（33）的喷嘴针侧端部处并且经由至少一个泄漏间隙连接到燃料供应器（外部）的（外部）控制空间 （18）处于注射压力下。 （第一）喷嘴针21通过位于控制空间47内的燃料沿打开方向36移动。

公开(公告)号：EP1636485A1

公开(公告)日：2006-03-22

申请号：EP04726421.3

申请日：2004-04-08

申请人： ROBERT BOSCH GMBH

发明人： KANNE, Sebastian ,  NENTWIG, Godehard

IPC分类号： F02M51/06 ,  F02M47/06

CPC分类号： F02M51/0603 ,  F02M2200/704

摘要： Disclosed is an injector for fuel injection systems of internal combustion engines, especially direct injection diesel engines. Said injector comprises a piezo actuator (16) that is disposed in an injector body (10) and rests against the injector (10) and a sleeve-type transmission piston (32) via first spring means (34). The inventive injector further comprises a nozzle body (20) which is connected to the injector body (10) and is provided with at least one nozzle outlet (26, 27) and in which a staggered valve needle (21) is guided in an axially movable manner, and second spring means (48) that are arranged inside the transmission piston (32) and maintain the valve needle (21) in the closed position along with the injection pressure that affects the rear end of the valve needle (21). The injector also comprises a control space (42) that is embodied at the end of the transmission piston (32), which faces the valve needle, and is connected to a fuel supply (18) via a leak gap (43, 45, 47), said fuel supply (18) being subjected to injection pressure. The valve needle (21) is impinged upon in the opening direction (35) by the fuel located in the control space (42). An essential characteristic of the invention consists of the fact that the transmission piston (32) actuated by the piezo actuator (16) is spatially directly allocated to the valve needle (21) such that a rearward area (30) of the valve needle (21), which has a larger diameter than an area of the valve needle (21) located at the nozzle outlet end, fits into the interior (31) of the transmission piston (32).

公开(公告)号：EP1360409A2

公开(公告)日：2003-11-12

申请号：EP02712738.0

申请日：2002-02-01

申请人： ROBERT BOSCH GMBH

发明人： EGLER, Walter ,  BOEHLAND, Peter ,  KANNE, Sebastian

IPC分类号： F02M63/00

CPC分类号： F02M63/0225 ,  F02M55/002 ,  F02M55/02 ,  F02M63/0007 ,  F02M2200/315

摘要： The invention relates to a device for injecting fuel into the combustion chambers of an internal combustion engine. Said device comprises a pump (2) which supplies a high-pressure collecting chamber (3) with fuel under high pressure. A high pressure supply line leads from said chamber to an injector (5) containing a metering valve (7) which pressurises an injection nozzle (24) by means of fuel. A damper throttle (26) is associated with the metering valve (7) and is connected to part of the high-pressure region.

公开(公告)号：EP1328726A1

公开(公告)日：2003-07-23

申请号：EP01978151.7

申请日：2001-09-12

申请人： Robert Bosch GmbH

发明人： BOEHLAND, Peter ,  KANNE, Sebastian

IPC分类号： F02M63/00 ,  F02M61/20 ,  F02M55/00

CPC分类号： F02M63/0007 ,  F02M61/205 ,  F02M2200/304

摘要： The invention relates to a fuel injection system comprising a fuel injection valve (1) having a valve body (20) wherein a valve member (60) is arranged in a bore (62) in such a way that it is axially moveable, being hydraulically controlled by the pressure of the fuel in a pressure chamber (64) and displaced longitudinally counter to a closing force, whereby at least one injection opening (68) is controlled.A control valve (30) is arranged inside the fuel injection valve. Said control valve comprises a control valve member (32) which is longitudinally displaceable in a control valve bore (38). In a first position, the control valve member (32) opens the connection between a high-pressure fuel source (10) and the pressure chamber (64). In a second position, said control valve member connects the pressure chamber (64) to the control chamber (50) and interrupts the connection to the high-pressure fuel source (10). The pressure wave occurring when the control valve (30) is closed enters the control chamber (50) which is connected to a discharge chamber (72) via a receiving bore (43). A pressure bolt (45) is guided in said receiving bore (43), moving synchronously with the valve member (60) in a longitudinal direction by means of a rigid connection. As it moves longitudinally, the pressure bolt (45) impinges upon the valve member (60) as a result of the hydraulic forces of the pressure wave in the direction of closure.

摘要翻译： 本发明涉及一种燃料喷射系统，其包括具有阀体（20）的燃料喷射阀（1），其中阀构件（60）以可轴向移动的方式布置在孔（62）中，水力地 由压力室（64）中的燃料压力控制，并纵向逆着闭合力移动，由此控制至少一个喷射开口（68）。控制阀（30）布置在燃料喷射阀内部。 所述控制阀包括可在控制阀孔（38）中纵向移动的控制阀构件（32）。 在第一位置，控制阀元件（32）打开高压燃料源（10）和压力室（64）之间的连接。 在第二位置，所述控制阀构件将压力室（64）连接到控制室（50）并且中断与高压燃料源（10）的连接。 当控制阀（30）关闭时出现的压力波进入经由接收孔（43）连接到排出室（72）的控制室（50）。 压力螺栓（45）在所述容纳孔（43）中被引导，通过刚性连接在纵向方向上与阀构件（60）同步地运动。 当它纵向移动时，由于压力波在关闭方向上的液压力，压力螺栓（45）撞击在阀构件（60）上。