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：EP1073836B1

公开(公告)日：2004-10-20

申请号：EP00907430.3

申请日：2000-01-14

申请人： ROBERT BOSCH GMBH

发明人： BOECKING, Friedrich

IPC分类号： F02M61/10 ,  F02M45/00 ,  F02M61/04

CPC分类号： F02M61/042 ,  F02M45/00 ,  F02M47/027 ,  F02M61/10 ,  F02M61/1806 ,  F02M2200/21

摘要： The invention relates to a nozzle element (2) for dosing liquids or gases. Said nozzle element comprises a nozzle body (4) and a nozzle needle (6) which is mounted in a guide bore (5) of the nozzle body (4) and can be displaced between an open and a closed position. Said nozzle needle (6) controls at least one metering opening (9) which communicates with the guide bore (5). Said nozzle needle rests against a sealing seat (8) of the nozzle body (4) in the closed position. The invention relates to a nozzle element (2) the nozzle needle (6) of which opens into the interior and has a dead stroke (hT). Said inventive nozzle element (2) is preferably configured as an injector for a common-rail injection system of an internal combustion engine.

公开(公告)号：EP1437505A1

公开(公告)日：2004-07-14

申请号：EP02777860.4

申请日：2002-10-16

申请人： Mitsubishi Heavy Industries, Ltd.

发明人： ISHIDA, Hiroyuki, Mitsubishi Heavy Ind., Ltd. ,  HAYASHI, Toshikazu, Mitsubishi Heavy Ind., Ltd. ,  ARAI, Takeshi, Mitsubishi Heavy Ind., Ltd. ,  NAMEKAWA, Syoji, Mitsubishi Heavy Ind., Ltd. ,  YOSHIZUMI, Hiroshi, Mitsubishi Heavy Ind., Ltd. ,  IDA, Noriaki, Mitsubishi Heavy Ind., Ltd. ,  KUNIMOTO, Etsuo, Choryo Engineering Co., Ltd.

IPC分类号： F02M47/00 ,  F02M45/00

CPC分类号： F02M45/12 ,  F02M45/00 ,  F02M45/02 ,  F02M45/04 ,  F02M63/0005 ,  F02M63/0007 ,  F02M63/0029 ,  F02M63/0064 ,  F02M63/0225

摘要： The present invention takes as its objective to provide a fuel injection device, and a diesel engine equipped therewith, which can reduce the amount of NOx in the exhaust gas while maintaining the rate of fuel consumption satisfactory. This fuel injection device includes a pressure accumulator which accumulates fuel whose pressure has been elevated, a fuel injection valve which opens by the supply of the fuel from the pressure accumulator and injects the fuel, a supply conduit which supplies fuel from the pressure accumulator to the fuel injection valve, and two valve apparatuses which are connected in the supply conduit in parallel and each of which interrupts fuel supply to the fuel injection valve. And the fuel flow amount when one of the electromagnetic valves is open is set to be smaller than the fuel flow amount when the other electromagnetic valve is open; and, during fuel supply to the fuel injection valve, an electromagnetic valve opens first, and next an electromagnetic valve opens.

摘要翻译： 并联连接到一个柴油进料路径中的电磁阀，允许或停止柴油的燃料喷射阀供给。 该电磁阀在不同的时间间隔打开，就会有不同的燃料的流速，分别。 因此独立权利要求中包括了以下内容：（1）的柴油发动机; 和（2）的燃料喷射装置的控制方法。

公开(公告)号：EP1417407A1

公开(公告)日：2004-05-12

申请号：EP02760949.4

申请日：2002-08-15

申请人： Volvo Teknisk Utveckling AB

发明人： HÖGLUND, Anders ,  LARSSON, Bengt

IPC分类号： F02M47/02 ,  F02M59/36 ,  F02M45/00

CPC分类号： F02M59/102 ,  F02M47/027 ,  F02M57/023

摘要： The invention relates to a method of controlling the fuel injection to a combustion chamber (4), comprising the steps of: supplying fuel to a pump (2), which has a piston (7) reciprocating in the a cylinder (6), pressurizing the fuel by applying a force onto the piston (7) by means of an actuator (8), so that the piston (7) is displaced from a first end position (9) towards a second end position (10), injection of fuel corresponding to a partial volume of the fuel pressurized in the cylinder (6), into the combustion chamber (4), and returning the piston (7) towards the first end position (9) by means of the pressurized fuel, so that the piston (7) acts with a driving force on the actuator (8). The invention also relates to a fuel injection device for carrying out the method

公开(公告)号：EP1159525A4

公开(公告)日：2004-03-31

申请号：EP00908760

申请日：2000-02-22

申请人： DIESEL TECH CO

发明人： JETT BRYAN THOMAS ,  SPOOLSTRA GREGG R

IPC分类号： F02M59/34 ,  F02M45/00 ,  F02M51/00 ,  F02M57/02 ,  F02M59/36 ,  F02M59/46 ,  F02M37/04

CPC分类号： F02M59/366 ,  F02M57/02 ,  F02M59/466

摘要： Pumps (6) and injectors (4) utilize a control valve (46) having a valve body (48) with a valve stem (88) having a step (94) adjacent to the seating surface (92). The step extends a limited distance away from the seating surface to provide limited pressure relief when the valve body is at an intermediate position that is between the opened and closed positions. Step cross-section and axial length may be configured based on desired hydraulic behavior. In a preferred embodiment, the control valve step is configured for injection rate shaping.

公开(公告)号：EP1395745A1

公开(公告)日：2004-03-10

申请号：EP02745091.5

申请日：2002-05-25

申请人： ROBERT BOSCH GMBH

发明人： GREIF, Hubert

IPC分类号： F02M47/02 ,  F02M45/00

CPC分类号： F02M47/027 ,  F02M45/00 ,  F02M61/042

摘要： The invention relates to an injector for injecting fuel into the combustion chambers of an internal combustion engine. An injector body (20) is provided with a control chamber (4) which accommodates a spring element (45). An injector needle (6) is enclosed in a nozzle chamber (25) that is impinged upon by pressurized fuel via a high-pressure conduit (21). Control edges (28) are formed in the head zone (34, 38) of the injector needle (6), said control edges determining a leakage gap (33) when the injector needle (6) travels (29, 31) into the control chamber (4).

公开(公告)号：EP1080306B1

公开(公告)日：2003-06-25

申请号：EP99921548.6

申请日：1999-04-30

申请人： CATERPILLAR INC.

发明人： CHOCKLEY, Scott A., Millhouse Rose Hill

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

CPC分类号： F02M57/025 ,  F02M45/00 ,  F02M59/105

摘要： A hydraulically-actuated fuel injector (10) includes an injector body (11) that defines an actuation fluid inlet (13), a first actuation fluid cavity (34), a second actuation fluid cavity (38) and a nozzle outlet (16). A piston (35) is positioned in the injector body (11) and is moveable between a retracted position and an advanced position. The piston (35) has a primary hydraulic surface (37) exposed to fluid in the first actuation fluid cavity (34), and an opposing hydraulic surface (39) exposed to fluid in the second actuation fluid cavtiy (38). A control valve (12) includes a spool valve member (60) that is moveable a distance between a first position and a second position. The first actuation fluid cavity (34) is closed to the actuation fluid inlet (13) when the spool valve member (60) is in its first position. The first actuation fluid cavity (34) is open, but the second actuation fluid cavity (38) is closed, to the actuation fluid inlet (13) when the spool valve member (60) is moving through a first portion of the distance. The first actuation fluid cavity (34) and the second actuation fluid cavity (38) are open to the actuation fluid inlet (13) when the spool valve member (60) is moving through a second portion of the distance. The first actuation fluid cavity (34) is open to the actuation fluid inlet (13) when the spool valve member (60) is in its second position.

公开(公告)号：EP1072785A3

公开(公告)日：2002-05-08

申请号：EP00306423.5

申请日：2000-07-27

申请人： Delphi Technologies, Inc.

发明人： Williams, Anthony John

IPC分类号： F02M45/00 ,  F02M57/02 ,  F02M59/10 ,  F02M59/30 ,  F02M45/12

CPC分类号： F02M59/102 ,  F02M45/12 ,  F02M57/024

摘要： A fuel pump comprising a pumping plunger (20) reciprocable within a bore (19), and a drive arrangement (25) for driving the pumping plunger (20). The drive arrangement (25) includes a compressible load transmission arrangement (29) for transmitting movement of the drive arrangement (25) to the pumping plunger (20). The load transmission arrangement (29) comprises first and second surfaces (43, 44) which define, therebetween, a chamber (37) for fluid. The fuel pump also comprises supply means (27, 35) for permitting the chamber (37) to be supplied with fluid, in use, and control means (36, 38, 39) for controlling the flow of fluid from the chamber (37).

摘要翻译： 一种燃料泵，包括在孔（19）内往复运动的泵送活塞（20）和用于驱动泵送活塞（20）的驱动装置（25）。 驱动装置（25）包括用于将驱动装置（25）的运动传递到泵送柱塞（20）的可压缩载荷传递装置（29）。 载荷传递装置（29）包括第一和第二表面（43,44），它们之间限定了用于流体的腔室（37）。 燃料泵还包括供应装置（27,35），用于在使用中向腔室（37）供应流体，以及用于控制来自腔室（37）的流体流动的控制装置（36,38,39） 。

公开(公告)号：EP1136692A3

公开(公告)日：2002-03-27

申请号：EP01106965.5

申请日：2001-03-20

申请人： C.R.F. Società Consortile per Azioni

发明人： Ricco Mario

IPC分类号： F02M47/02 ,  F02M45/00

CPC分类号： F02M47/027 ,  F02M45/00 ,  F02M2547/003

摘要： The injector (7) has a control rod (17) controlled by the fuel pressure in a control chamber (52), and a nozzle (13) having an injection chamber (31) supplied with pressurized fuel for injection. The nozzle (13) has at least one injection orifice (16) normally closed by a pin (19) connected to the rod (17) and activated by the fuel pressure in the injection chamber (31). The control chamber (52) has a pressurized-fuel intake conduit (57), and a fuel discharge conduit (59) which is normally closed and is opened for a variable length of time depending on the amount of fuel to be injected. The pin (19) and the rod (17), and/or the intake conduit (57) and the discharge conduit (59), are so sized as to keep the pin (19) and the rod (17) hydraulically balanced in the maximum-lift position to open the orifice (16).

公开(公告)号：EP0770174B1

公开(公告)日：2001-11-28

申请号：EP96908791.5

申请日：1996-03-14

申请人： CATERPILLAR INC.

发明人： CAMPLIN, Fred, A. ,  FLINN, Michael, A. ,  ZUO, Lianghe

IPC分类号： F02M45/00 ,  F02M59/08 ,  F02M63/02 ,  F02M57/02 ,  F02M59/10

CPC分类号： F02M57/026 ,  F02M45/00 ,  F02M57/025 ,  F02M59/08 ,  F02M59/105 ,  F02M63/02

摘要： A multipiece fuel pump plunger assembly for controlling the fuel injection rate and delivery during the initial injection portion of a fuel injection cycle for an internal combustion engine. The injector (2) includes a two piece plunger assembly including a plunger (60) and a plunger sleeve (58). The plunger (60) having a small predetermined diameter and being slidably positioned within a plunger sleeve (58) having a diameter greater than the diameter of the plunger (60). The multipiece plunger (60) is advantageous because it allows for shaping of the rate of fuel injected into the combustion process thereby reducing the excess fuel flow in the early portion of the injection cycle. Elimination of the excess fuel flow results in lower oxides of nitrogen and particulate exhaust emission levels and less engine noise.