公开(公告)号：EP1397593B1

公开(公告)日：2007-08-15

申请号：EP02742762.4

申请日：2002-05-17

申请人： ROBERT BOSCH GMBH

发明人： BRAUN, Wolfgang ,  MAHR, Bernd ,  KROPP, Martin ,  MAGEL, Hans-Christoph

IPC分类号： F02M57/02 ,  F02M59/10 ,  F02M47/02

CPC分类号： F02M57/026 ,  F02M47/027 ,  F02M55/002 ,  F02M57/025 ,  F02M59/105 ,  F02M59/34

摘要： A fuel injection device comprising a pressure booster. The pressure booster comprises a displaceable piston (24) which can be impinged upon with pressure via a pressure booster chamber on the low pressure side in order to compress the fuel which is to be fed to an injector. The stroke (24) of the piston can be essentially controlled by the pressure in a differential chamber of the pressure booster and is used to influence the pressure of the fuel fed to the injector. Means (24, 25) are provided for enlarging the cross-section of the discharge from the differential chamber of the pressure booster. The fuel pressure can be influenced during injection. An increase in pressure can be obtained using simple means.

摘要翻译： 一种包括增压器的燃料喷射装置。 增压器包括一个可移动的活塞（24），该活塞可以通过低压侧上的增压室在压力作用下被冲击，以便压缩将被供给到喷射器的燃料。 活塞的行程（24）基本上可以通过增压器的差动室中的压力来控制，并且用于影响供给到喷射器的燃料的压力。 提供装置（24,25）用于增大来自增压器的差动室的排出物的横截面。 注射过程中可能会影响燃油压力。 使用简单的手段可以获得压力的增加。

公开(公告)号：EP1520097B1

公开(公告)日：2006-10-04

申请号：EP03732208.8

申请日：2003-04-09

申请人： ROBERT BOSCH GMBH

发明人： KROPP, Martin ,  MAGEL, Hans-Christoph ,  MACK, Manfred ,  GRIMMINGER, Christian

IPC分类号： F02M57/02

CPC分类号： F02M59/105 ,  F02M57/025 ,  F02M61/205 ,  F02M2200/24 ,  F02M2200/304

摘要： The invention relates to a fuel injection device for injecting fuel into the combustion chambers (7) of an internal combustion engine. The fuel injection device comprises a high-pressure accumulator chamber (2), a pressure intensifier (5) and a metering valve (6, 56). The pressure intensifier (5) comprises a working chamber (10) and a control chamber (11), which are separated from one another by an axially displaceable piston (12). A pressure change in the control chamber (11) of the pressure intensifier (5) leads to a pressure change in a compression chamber (15), the latter impinging a nozzle chamber (22) by means of a fuel inlet (28). The nozzle chamber (22) surrounds an injector valve member (29), which can for example be configured as a nozzle needle. A nozzle spring chamber (25) that impinges the injector valve member (29) can be filled on the high pressure side by the compression chamber (15) of the pressure intensifier (5) via a line (23) containing an input throttle (24). On the delivery side, the nozzle spring chamber (28) is connected to a chamber (11) of the pressure intensifier (5) via a line (26, 40) containing a delivery throttle (27).

公开(公告)号：EP1527273A1

公开(公告)日：2005-05-04

申请号：EP03787645.5

申请日：2003-07-10

申请人： ROBERT BOSCH GMBH

发明人： BRENK, Achim ,  KROPP, Martin ,  MACK, Manfred ,  HAMMER, Juergen ,  TAMPE, Reinhard ,  BASTIAN, Heike

IPC分类号： F02M47/02 ,  F02M59/46 ,  F02M45/08 ,  F02M61/10

CPC分类号： F02M45/02 ,  F02M45/08 ,  F02M45/12 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M61/205 ,  F02M63/0015 ,  F02M63/0017 ,  F02M63/0022 ,  F02M63/0026 ,  F02M63/004 ,  F02M63/0043 ,  F02M63/0049 ,  F02M63/0064

摘要： The invention relates to a fuel injector in an injection arrangement for internal combustion engines comprising a valve body (2). Said fuel injector comprises a pressure-relievable control chamber (19) which is impinged by fuel via an inlet throttle (32) and whose pressure can be relieved via an outlet throttle (17). A closing element (43) can be actuated by a first actuator (15). The valve body (2) is connected to a retaining body (5), whereon a nozzle body (9) surrounding an injection valve end (11) is fixed. Another second outlet throttle (18) is provided for relieving the pressure of the control chamber (19), whereby the closing element thereof (49) can be actuated by either another actuator (16) or according to the flow (70, 73, 79) of a doubly-switching actuator (50).

公开(公告)号：EP1123463B1

公开(公告)日：2005-03-30

申请号：EP00958211.5

申请日：2000-08-02

申请人： ROBERT BOSCH GMBH

发明人： MAHR, Bernd ,  KROPP, Martin ,  MAGEL, Hans-Christoph ,  OTTERBACH, Wolfgang

IPC分类号： F02M59/10 ,  F02M57/02 ,  F02M47/02 ,  F02M45/00 ,  F02M41/16 ,  F02M41/02

CPC分类号： F02M57/026 ,  F02M41/06 ,  F02M45/00 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M63/0225

摘要： The invention relates to a fuel injection system (1) for an internal combustion engine. According to the inventive system, the fuel is injected into the combustion chamber of the internal combustion engine via injectors (10; 61) with at least two different fuel pressures. A hydraulic pressure multiplicator (11) that generates the higher fuel pressure is provided in parallel to a by-pass line (19). Said pressure multiplicator (11) can be activated and deactivated via a valve unit (13). The invention provides a fuel injection system with an improved efficiency since the pressure multiplicator is not permanently operated and the losses through friction are reduced.

摘要翻译： 用于内燃机的燃料喷射系统（1）。 根据本发明的系统，燃料经由具有至少两个不同的燃料压力的喷射器（10; 61）喷射到内燃机的燃烧室中。 产生较高燃料压力的液压增压器（11）与旁路管线（19）并联设置。 所述压力倍增器（11）可以通过阀单元（13）启动和停用。 本发明提供了一种燃油喷射系统，其效率得到了提高，因为压力倍增器不是永久运行的，并且通过摩擦损失减少了。

公开(公告)号：EP1123462B1

公开(公告)日：2005-03-30

申请号：EP00958209.9

申请日：2000-08-02

申请人： ROBERT BOSCH GMBH

发明人： MAHR, Bernd ,  KROPP, Martin ,  MAGEL, Hans-Christoph ,  OTTERBACH, Wolfgang

IPC分类号： F02M57/02 ,  F02M59/10 ,  F02M45/00

CPC分类号： F02M57/025 ,  F02M45/00 ,  F02M45/02 ,  F02M45/04 ,  F02M47/027 ,  F02M57/023 ,  F02M59/105 ,  F02M63/0007 ,  F02M63/0225 ,  F02M2200/21

摘要： The invention relates to a fuel injection device (1), comprising one or more pump-nozzle units or pump-line-nozzle systems (6) that correspond to the number of cylinders and that compress the fuel. The fuel injection device is also provided with a hydraulic pressure multiplicator (10). The inventive device facilitates fuel injection over a wide speed range and with high precision using the pump-nozzle unit (6) and the pressure multiplicator (10).

公开(公告)号：EP1125049B1

公开(公告)日：2004-11-03

申请号：EP00958207.3

申请日：2000-08-02

申请人： ROBERT BOSCH GMBH

发明人： MAHR, Bernd ,  KROPP, Martin ,  MAGEL, Hans-Christoph ,  OTTERBACH, Wolfgang

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

CPC分类号： F02M45/00 ,  F02M41/06 ,  F02M41/16 ,  F02M45/02 ,  F02M45/04 ,  F02M47/027 ,  F02M59/105 ,  F02M63/0007 ,  F02M63/0225 ,  F02M2200/21

摘要： The invention relates to a method for injecting fuel with at least two different fuel pressures via injectors (80) into the combustion chamber of an internal combustion engine. According to the inventive method, the fuel with the lower fuel pressure is injected in a stroke-controlled manner and the fuel with the higher fuel pressure is injected in a pressure-controlled manner. For a pre-injection and/or post-injection and/or for an injection in a boat-shaped injection cone of a fuel with the lower fuel pressure the control chamber (24) and the nozzle room (11) via a non-return valve (81) are connected to a low-pressure fuel supply. For a main injection with the higher fuel pressure the nozzle chamber (11) is connected to the high-pressure fuel supply.

公开(公告)号：EP1370762A1

公开(公告)日：2003-12-17

申请号：EP02727209.5

申请日：2002-03-12

申请人： ROBERT BOSCH GMBH

发明人： MAHR, Bernd ,  KROPP, Martin ,  MAGEL, Hans-Christoph

IPC分类号： F02M47/04 ,  F02M57/02 ,  F02M59/10 ,  F02M63/02 ,  F02M47/02

CPC分类号： F02M63/0225 ,  F02M47/027 ,  F02M47/043 ,  F02M57/025 ,  F02M59/105

摘要： The invention relates to a fuel injection device (1) for combustion engines comprising at least one lift-controlled injector (10). A pressure intensifier (9) comprising a displaceable piston (26) is arranged between the at least one injector (10) and a working medium high-pressure source (5). The displaceable piston (26) which separates a primary chamber (13) which can be connected to the working medium high pressure source (5) from a pressure chamber (8) which is connected to at least one injector (10) and filled with fuel. The pressure intensifier (9) generates a first fuel system pressure in the injector (10), which is used for injecting. The fuel injection device (1) comprises means for producing an additional second fuel system pressure, which can be used for injecting without activating the pressure intensifier (9).

公开(公告)号：EP1125046A1

公开(公告)日：2001-08-22

申请号：EP00958196.8

申请日：2000-08-02

申请人： ROBERT BOSCH GMBH

发明人： MAHR, Bernd ,  KROPP, Martin ,  MAGEL, Hans-Christoph ,  OTTERBACH, Wolfgang

IPC分类号： F02M45/00 ,  F02M47/02 ,  F02M63/00 ,  F02M63/02 ,  F02M59/10 ,  F02M41/02 ,  F02M45/12

CPC分类号： F02M63/029 ,  F02M41/16 ,  F02M45/02 ,  F02M45/04 ,  F02M47/027 ,  F02M57/025 ,  F02M59/105 ,  F02M63/0007

摘要： The invention relates to a fuel injection system (1) for an internal combustion engine. The fuel which is supplied by means of a high-pressure pump (5) can be injected into the combustion chamber of the internal combustion engine by means of injectors (9), whereby the fuel is provided with at least two different fuel pressures. At least one central pressure transmission unit (10) for all the injectors (9) is provided between the high-pressure pump (5) and the injectors (9). The pressure transmission unit can be specifically controlled if required, whereby the volume of the fuel that is subjected to a higher pressure can be better controlled and losses due to friction can be reduced accordingly.

公开(公告)号：EP1554489B1

公开(公告)日：2008-09-10

申请号：EP03808664.1

申请日：2003-06-30

申请人： ROBERT BOSCH GMBH

发明人： MAGEL, Hans-Christoph ,  KROPP, Martin

IPC分类号： F02M57/02 ,  F02M59/10 ,  F02M47/02

CPC分类号： F02M59/105 ,  F02M47/027 ,  F02M57/025 ,  F02M61/165 ,  F02M63/0015 ,  F02M63/0043

摘要： The invention relates to a fuel injection device (1) for internal combustion engines comprising a fuel injector (26) that can be impinged upon by a high-pressure fuel source (2, 43). Said fuel injection device (1) is provided with a pressure booster (13) comprising a movable piston-type booster element (14) which separates a working chamber (15) that can be connected to the high-pressure source (2, 43) via a high-pressure conduit (3) from a high-pressure chamber (17) impinging the fuel injector (26). The fuel pressure of a high-pressure chamber (17) can be modified by filling a rear chamber (16) of the pressure booster (13) with fuel and discharging fuel from said rear chamber (16). A filter element (5) is accommodated within a conduit section (4) that branches off the high-pressure conduit (3), and is mounted upstream of flow connections (10, 20, 23; 42, 44) which are used for filling pressure chambers (16, 17) of the pressure booster (13).

公开(公告)号：EP1778967B1

公开(公告)日：2008-02-20

申请号：EP04762760.9

申请日：2004-09-07

申请人： ROBERT BOSCH GMBH

发明人： BRENK, Achim ,  KROPP, Martin ,  BUCHER, Kilian ,  GREULICH, Dietmar ,  SCHNELL, Matthias ,  ZIPPERER, Elmar ,  TUERKER, Oezguer ,  KOCH, Reiner

IPC分类号： F02M45/08

CPC分类号： F02M63/0029 ,  F02M45/086 ,  F02M61/205 ,  F02M63/0005 ,  F02M2200/46

摘要： The invention relates to an injection nozzle (1) for an internal combustion engine, particularly in a motor vehicle. Said injection nozzle (1) comprises a first nozzle needle (2) for controlling at least one first injection port (5) and a second nozzle needle (3) for controlling at least one second injection port (15). A nozzle chamber (11) can be connected to a high pressure source (28) via a fuel supply line (27). The first nozzle needle (2) is provided with a first pressure stage (12) which is disposed in the nozzle chamber (11) and can be impinged upon therein by an injection pressure that applies an opening force acting in the opening direction (13) to the first nozzle needle (2). In order to improve closing of the first nozzle needle (2), a control chamber (38) is provided which can be connected to the high pressure source (28) via a control line (39). The first nozzle needle (2) encompasses a first control surface (41) which is located in the control chamber (38) and can be impinged upon therein by a control pressure that applies a closing force acting in the closing direction (7) to the first nozzle needle (2). The control line (39) is more severely throttled than the fuel supply line (27).