公开(公告)号：EP1463882A1

公开(公告)日：2004-10-06

申请号：EP02801120.3

申请日：2002-12-12

申请人： Renault s.a.s.

发明人： GARO, Lanig

IPC分类号： F02D41/38 ,  F02M63/02 ,  F02M55/02

CPC分类号： F02D41/3872 ,  F02D2250/04 ,  F02D2250/31 ,  F02M47/02

摘要： The invention relates to a fuel injection device comprising: a fuel injector; a tube which is used to supply fuel to the injector; a needle which moves and thereby opens or closes the injector; and a valve which controls a fuel leak in order to cause the needle control pressure to drop below a switching pressure threshold, said tube being supplied with fuel at a source pressure (Ps). The invention comprises the following two steps, namely: the valve is opened, outside of the injection phases, for short periods at an excitation frequency in order to create an oscillatory phenomenon in relation to the pressure in the tube around the source pressure (Ps), the opening duration being shorter than a predetermined period which is necessary for the control pressure to reach the switching pressure; and the fuel injection is started at a moment when the pressure in the tube is increasing and greater than the source pressure (Ps).

公开(公告)号：EP1312792A3

公开(公告)日：2004-09-01

申请号：EP02022358.2

申请日：2002-10-08

申请人： ROBERT BOSCH GMBH

发明人： Grabandt, Peter

IPC分类号： F02M59/36 ,  F02M59/44 ,  F02M55/04 ,  F02M47/02

CPC分类号： F02M47/027 ,  F02M47/02 ,  F02M55/04 ,  F02M59/366 ,  F02M59/44 ,  F02M61/205 ,  F02M2200/40

摘要： Die Kraftstoffeinspritzeinrichtung weist eine Kraftstoffhochdruckpumpe (10) und ein mit dieser verbundenes Kraftstoffeinspritzventil (12) für jeden Zylinder der Brennkraftmaschine auf. Die Kraftstoffhochdruckpumpe (10) weist einen durch die Brennkraftmaschine in einer Hubbewegung angetriebenen Pumpenkolben (18) auf, der einen Pumpenarbeitsraum (22) begrenzt, welcher über eine Leitung (14) mit einem Druckraum (40) des getrennt von der Kraftstoffhochdruckpumpe (10) an der Brennkraftmaschine angeordneten Kraftstoffeinspritzventils (12) verbunden ist, das ein Einspritzventilglied (28) aufweist, durch das wenigstens eine Einspritzöffnung (32) gesteuert wird und das durch den im Druckraum (40) herrschenden Druck beaufschlagt gegen eine Schließkraft in Öffnungsrichtung (29) zur Freigabe der wenigstens einen Einspritzöffnung (32) bewegbar ist. Am Kraftstoffeinspritzventil (12) ist ein elektrisch betätigtes Steuerventil (58) vorgesehen, durch das zumindest mittelbar eine Verbindung (54) des Pumpenarbeitsraums (22) mit einem Speicherraum (56) gesteuert wird, in dem bei geöffnetem Steuerventil (58) durch dieses abgesteuerter Kraftstoff unter Druck speicherbar ist.

公开(公告)号：EP1335125A4

公开(公告)日：2004-08-18

申请号：EP00976337

申请日：2000-11-17

申请人： ISUZU MOTORS LTD ,  DELPHI TECH INC

发明人： NISHIMURA T ,  MINATO A ,  TAKASE S ,  FUJITA MAHORO ,  BREITBACH HERMANN

IPC分类号： F02M47/02 ,  F02M55/04 ,  F02M63/00 ,  F02M61/10 ,  F02M61/20

CPC分类号： F02M47/027 ,  F02M47/02 ,  F02M47/022 ,  F02M55/04 ,  F02M2200/304

摘要： An injector (8b) for fuel injection capable of always providing a stable needle lift damping effect by relieving a fuel pressure inside a pressure control chamber (37) so as to lift a needle valve (36), comprising a damper member (62) installed slidably in a needle valve (36), a damping chamber (63) formed between the damper member (62) and the needle valve (36), a leak passage (64) allowing fuel inside the damping chamber (63) to be throttled and leaked, and a stopper member (41) limiting the upper position of the damper member (62), wherein fuel inside the damping chamber (63) is leaked after throttled by the leak passage (64) so as to damp the lift of the needle valve (36), whereby the needle valve (36) performs a damper member (62) guiding function, the damper member (62) is prevented from being wobbled, and a stable needle lift damping effect can be provided at all times.

公开(公告)号：EP1399666A1

公开(公告)日：2004-03-24

申请号：EP02740296.5

申请日：2002-04-27

申请人： ROBERT BOSCH GMBH

发明人： MAGEL, Hans-Christoph

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

CPC分类号： F02M47/027 ,  F02M47/02 ,  F02M57/025 ,  F02M59/105 ,  F02M59/468

摘要： A fuel injection device for internal combustion engines is disclosed, comprising a fuel injector supplied by a high pressure fuel source and a pressure amplification device. Said pressure amplification device comprises a moving pressure amplification piston, which separates a chamber which may be connected to the high pressure fuel source from a high pressure chamber connected to the fuel injector. The fuel pressure in the high pressure chamber may be varied by either filling a return chamber on the pressure amplification device with fuel or emptying the return chamber of fuel. The fuel injector comprises a moving closing piston, for opening and closing injection openings, which extends into a sealing pressure chamber (12; 112) so as to pressurise the sealing piston with fuel pressure, generating a force acting in the closing direction on the closing piston. The closing pressure chamber (12; 112) and the chamber (26; 126) are formed by a common working chamber, whereby all the partial regions (12, 47, 26; 112, 130, 126) of the working chamber are permanently connected to each other (47; 130) for the exchange of fuel.

摘要翻译： 公开了一种用于内燃机的燃料喷射装置，其包括由高压燃料源和压力放大装置供应的燃料喷射器。 所述压力放大装置包括移动压力放大活塞，其将可连接到高压燃料源的腔室与连接到燃料喷射器的高压腔室分隔开。 高压室中的燃料压力可以通过向压力放大装置上的返回室填充燃料或清空燃料返回室来改变。 燃料喷射器包括用于打开和关闭喷射开口的移动闭合活塞，其延伸到密封压力室（12; 112）中以便利用燃料压力对密封活塞加压，从而在闭合方向上产生作用在闭合方向上的力 活塞。 闭合压力室（12; 112）和室（26; 126）由共同的工作室形成，由此工作室的所有部分区域（12,47,26; 112,130,126）永久连接 彼此（47; 130）交换燃料。

公开(公告)号：EP1056946B1

公开(公告)日：2004-03-17

申请号：EP99966843.7

申请日：1999-12-08

申请人： ROBERT BOSCH GMBH

发明人： MENNICKEN, Michael ,  WIRTH, Ralf ,  BOEHLAND, Peter ,  BADOCK, Christoph ,  HENTSCHEL, Ralf

IPC分类号： F02M47/02

CPC分类号： F02M47/02 ,  F02M55/008

摘要： A fuel injection valve for high pressure injection of fuel from a high-pressure central fuel tank (1) into the combustion chambers of an internal combustion engine. The high pressure fuel tank (1) interacts with a control chamber via an inlet throttle hole (10), whereby said control chamber controls the opening and closing of the injector nozzle and the control chamber (20) communicates with a switch valve via an outlet throttle hole (30). The inlet throttle hole (10) is oriented in an eccentric position with respect to the control chamber (20).

摘要翻译： 一种燃料喷射阀，用于从高压中央燃料箱（1）高压喷射燃料进入内燃机的燃烧室。 高压燃料箱（1）通过进口节流孔（10）与控制室相互作用，由此所述控制室控制喷射器喷嘴的打开和关闭，并且控制室（20）经由出口 节流孔（30）。 进口节流孔（10）相对于控制室（20）定位在偏心位置。

公开(公告)号：EP1211411A3

公开(公告)日：2004-01-21

申请号：EP01127102.0

申请日：2001-11-15

申请人： ROBERT BOSCH GMBH

发明人： Potschin, Roger ,  Projahn, Ulrich

IPC分类号： F02M45/06 ,  F02M61/16 ,  F02M59/46 ,  F02M57/02

CPC分类号： F02M63/0061 ,  F02M45/06 ,  F02M47/02 ,  F02M47/025 ,  F02M47/027 ,  F02M57/023 ,  F02M59/365 ,  F02M59/366 ,  F02M59/466 ,  F02M59/468 ,  F02M63/0026 ,  F02M63/0049 ,  F02M2200/703

摘要： Die Erfindung bezieht sich auf einen Injektor zum Einspritzen von Kraftstoff in die Brennräume einer Verbrennungskraftmaschine, wobei der in einer Verdichtungseinheit (7) komprimierte Kraftstoff über eine Druckleitung (5) einem eine Düsennadel (3) des Injektors (1) umgebenden Düsenraum (4) zufügbar ist. Dieser steht mit der in den Brennraum einer Verbrennungskraftmaschine hineinragenden Einspritzdüse (6) in Verbindung, wobei im Injektor eine Fluidsteuerungseinheit enthalten ist. Die Fluidsteuerungseinheit ist als im Gehäuse (2) des Injektors (1) auswechselbar angeordnetes Hydraulikmodul. (14, 31, 36, 42) beschaffen, welches entweder aktor- oder elektromagnetisch betätigbar sein kann.

公开(公告)号：EP1370761A1

公开(公告)日：2003-12-17

申请号：EP02750516.3

申请日：2002-03-09

申请人： ROBERT BOSCH GMBH

发明人： KIENZLER, Dieter ,  MATTES, Patrick ,  STOECKLEIN, Wolfgang ,  BOECKING, Friedrich

IPC分类号： F02M47/02 ,  F02M47/00

CPC分类号： F02M61/20 ,  F02M47/02 ,  F02M47/027 ,  F02M2200/21

摘要： An injection nozzle comprises a nozzle body (12), a nozzle needle (18), which is displaceably mounted inside the nozzle body, a control space (20), which is connected to a fluid inlet (30) and to a fluid outlet (34), and comprises a valve element (40), which can open and close the fluid outlet (34). The control space is laterally delimited by a displaceable ring (24), whereby said ring rests against the nozzle needle and a closing spring (28) presses the ring against the nozzle needle in a fluid-tight manner.

公开(公告)号：EP1299637A1

公开(公告)日：2003-04-09

申请号：EP01943159.2

申请日：2001-05-25

申请人： ROBERT BOSCH GMBH

发明人： BOECKING, Friedrich

IPC分类号： F02M47/02 ,  F02M61/12

CPC分类号： F02M61/12 ,  F02M47/02 ,  F02M47/027 ,  F02M2200/21

摘要： The invention relates to an injector for the injection of fuel into combustion chambers of an internal combustion engine. Said injector (1) comprises an injector housing (2) in which a control chamber (20) is formed, which may be pressurised by a control volume by means of an inlet throttle (21). The control chamber (20) pressure may be released by means of a control element (10), operated by an actuator, whereby a control piece (3) may be displaced in the vertical direction within the injector housing (2). The control piece (3) and the nozzle needle (22) are formed in one piece.

公开(公告)号：EP0898649B1

公开(公告)日：2002-08-14

申请号：EP97924099.1

申请日：1997-05-14

申请人： Melchior, Jean Frédéric

发明人： Melchior, Jean Frédéric

IPC分类号： F02M47/02 ,  F02M61/20 ,  F02M57/02

CPC分类号： F02M57/02 ,  F02M47/02 ,  F02M47/027 ,  F02M47/06 ,  F02M59/102 ,  F02M2200/40

摘要： The invention features a device for injecting high pressure atomised fuel liquid into the combustion chamber of an internal combustion engine comprising means for delivering high pressure liquid fuel (16) such as a pump communicating, via cyclic communication means with an injection chamber (26) of variable volume with a movable element (27) returned by resilient returning means (28) towards a stop (33) and communicating permanently with the nozzle cavity (10), the amount of liquid fuel being delivered to the injection chamber during the cyclic closing phase of the nozzle obturating means (14). This invention is useful for diesel engines.

公开(公告)号：EP1179134A1

公开(公告)日：2002-02-13

申请号：EP01915037.4

申请日：2001-02-24

申请人： ROBERT BOSCH GMBH

发明人： BRENK, Achim ,  KLENK, Wolfgang ,  GORDON, Uwe ,  MACK, Manfred

IPC分类号： F02M45/08 ,  F02M47/02

CPC分类号： F02M47/02 ,  F02M45/086 ,  F02M2200/46

摘要： The invention relates to a fuel injection nozzle, comprising a nozzle body (12) which has a first group and a second group of nozzle holes (14, 16); a first and a second nozzle needle (18, 20) and a separate pressure chamber (24, 34) for each nozzle needle, so that said nozzle needles can be switched between a closed position in which the nozzle holes allocated to the respective nozzle needle are closed, and an injection position in which the respective nozzle holes are open; independently of each other. The aim of the invention is to provide a simple construction and at the same time, enable a free choice of injection cross-sections. To this end, the two nozzle needles are adjacent to each other.

摘要翻译： 本发明涉及一种燃料喷嘴，包括具有第一组喷嘴孔和第二组喷嘴孔的喷嘴体（12）; 第一和第二喷嘴针（18,20）以及用于每个喷嘴针的单独的压力室（24,34），使得所述喷嘴针可以在关闭位置和关闭位置之间切换，在关闭位置中，分配给相应喷嘴针的喷嘴孔 和关闭各喷嘴孔的喷射位置; 彼此独立。 本发明的目的是提供简单的构造并且同时能够自由选择注射横截面。 为此，两个喷嘴针彼此相邻。