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公开(公告)号：EP0882180B1
公开(公告)日：2002-10-23
申请号：EP97931698.1
申请日：1997-07-02
申请人： ROBERT BOSCH GMBH
CPC分类号： F02M45/063 , F02M41/125 , F02M45/083 , F02M59/366 , F04B49/225 , F04B2203/0209
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公开(公告)号：EP0859148A3
公开(公告)日：1999-07-21
申请号：EP98102430.0
申请日：1998-02-12
申请人： ZEXEL CORPORATION
发明人： Ohishi, Takashi, c/o Zexel Corporation , Noda, Toshihumi, c/o Zexel Corporation , Yokota, Tohru, c/o Zexel Corporation , Kitahara, Nobuhiro, c/o Zexel Corporation
IPC分类号： F02M45/06
CPC分类号： F02M45/02 , F02M45/063 , F02M59/102 , F02M59/24 , F02M59/38
摘要： An objective of the present invention is to provide a fuel injection pump wherewith, in addition to main injection, pre-injection is made possible in the vicinity of top dead center in the exhaust stroke, and wherewith, by regulating the pre-stroke, defined as the stroke from bottom dead center of a plunger 2 to the commencement of fuel line pressurization, it is possible to freely control both the pre-injection volume and the pre-injection timing relative to the main injection. Attention having been given to the combining of a pre-stroke varying mechanism together with a two-stage injection mechanism, the present invention is a fuel injection pump that is made so that a pre-stroke is regulated by changing the relative positions, in the axial direction, of a plunger 2 that sends fuel under pressure and a control sleeve 3 that fits around the outside of the plunger 2 so as to slide freely thereon. The cam 4 that drives the plunger 2 comprises a main cam nose 20 for main injection use and a pre cam nose 21 for pre-injection use.
摘要翻译： 本发明的目的是提供一种燃料喷射泵，其除了主喷射之外还可以在排气冲程中的上止点附近进行预喷射，并且通过调节预冲程来限定 作为从柱塞2的下止点开始到燃料管线加压开始的行程，能够自由地控制相对于主喷射的预喷射量和预喷射时间。 已经注意到预行程变化机构与两级喷射机构的组合，本发明是一种燃料喷射泵，其被制成为通过改变相对位置来调节预行程，在 在压力下输送燃料的柱塞2的轴向方向，以及配合在柱塞2的外侧以便在其上自由滑动的控制套筒3。 驱动柱塞2的凸轮4包括用于主喷射用的主凸轮头20和用于预喷射用的预凸轮头21。
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公开(公告)号：EP0910739A1
公开(公告)日：1999-04-28
申请号：EP98912246.0
申请日：1998-02-17
申请人： ROBERT BOSCH GMBH
CPC分类号： F02M59/366 , F02M41/125 , F02M45/06 , F02M45/063
摘要： The invention relates to a fuel injection system having a fuel injection pump, the high-pressure delivery of which is determined by an electrically operated valve (24) which controls a discharge channel (21). The high-pressure delivery phase is determined by closing this valve (24). In order to carry out an injection, sub-divided into a pre-injection and a main injection, and in order to simplify control of the electrically operated valve (24), the cam (5) driving the pump piston (1) is so designed as to create an area in which the pump piston (1), in order to interrupt injection between pre-injection and main injection, maintains the position attained, moves backward, or moves forward more slowly, and the valve (24) is controlled in such a way that, at low rotational speed, the pump working area (10) is closed when the pump piston (1) is in front of the beginning of the cam area (V) preceding the area (P), and open when the pump piston (1) is in the cam area (V), and is closed again at the beginning of the cam area (H) following the area (P), before being opened again in order to complete injection; whereas at high rotational speed the first closing of the valve (24) per delivery stroke takes place in the area (P) without prior pre-injection.
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公开(公告)号：EP0882180A1
公开(公告)日：1998-12-09
申请号：EP97931698.0
申请日：1997-07-02
申请人： ROBERT BOSCH GMBH
CPC分类号： F02M45/063 , F02M41/125 , F02M45/083 , F02M59/366 , F04B49/225 , F04B2203/0209
摘要： Disclosed is a fuel injection system, comprising an injection pump which is fed under high pressure by an electrically operated valve working in a discharge channel (30), the phase being determined by the valve closing. In order to achieve a two step injection, i.e. a preliminary injection and a main injection, and to simplify the stimulation of the electrically-operated valve (24), the came driving the pump piston (1) is so featured as to offer an area (P) where the pump piston stops in its tracks or withdraws, thereby interrupting the injection between the preliminary and the main injection.
摘要翻译： 本发明公开了一种燃料喷射系统，其包括喷射泵，所述喷射泵通过在排放通道（30）中工作的电动阀在高压下供给，所述相由所述阀关闭确定。 为了实现两步喷射，即初步喷射和主喷射，并且为了简化对电动阀（24）的刺激，来自泵驱动泵活塞（1）的特征在于提供面积 （P），泵活塞停在其轨道上或退出，从而中断了初喷和主喷射之间的喷射。
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公开(公告)号：EP0185308B1
公开(公告)日：1989-01-25
申请号：EP85115792.5
申请日：1985-12-11
发明人： Küpper, Heinz
CPC分类号： F02M45/063 , F02B3/06 , F02B2275/14 , F02M45/04 , F02M45/12 , Y02T10/123
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公开(公告)号：EP2243951A3
公开(公告)日：2010-12-08
申请号：EP10007797.3
申请日：2003-09-26
CPC分类号： F04B49/18 , F02M45/063 , F02M59/16 , F02M59/26
摘要： A high pressure fuel pump having a variable fuel injection rate, including a pump body, a pump cylinder formed in the pump body and a piston reciprocable within the pump cylinder, which defmes a pressurization chamber (120). The pump piston (106) has a reduced diameter portion which provides a primary piston (112). A piston annulus is slidably mounted thereon and provides a secondary piston (116). An annular actuation chamber (122) adjoins the secondary piston (116) opposite the pressurization chamber (120). An actuation passage is provided between a return fuel drain and the actuation chamber (122), which is selectively open or closed passively by pump piston (106) movement and/or dynamically by operation of an actuation solenoid valve (128). If the actuation chamber passage (124) is open, then during the pressurization stroke the secondary piston (116) will remain stationary relative to the pump body, but if it is closed then the secondary piston (116) must stroke in unison with the primary piston (112).
摘要翻译： 一种具有可变燃料喷射速率的高压燃料泵，其包括泵体，形成在泵体中的泵缸和可在泵缸内往复运动的活塞，其限定加压室（120）。 泵活塞（106）具有减小直径的部分，其提供主活塞（112）。 活塞环可滑动地安装在其上并提供第二活塞（116）。 环形致动室（122）与加压室（120）相对地邻接次级活塞（116）。 在返回燃料排出口和致动室（122）之间提供致动通道，该致动通道被泵活塞（106）移动和/或通过操作致动电磁阀（128）动态地选择性地打开或关闭。 如果致动室通道（124）打开，则在增压冲程期间，次活塞（116）将相对于泵体保持静止，但是如果其关闭，则次活塞（116）必须与主活塞 活塞（112）。
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公开(公告)号：EP1826397A2
公开(公告)日：2007-08-29
申请号：EP07006298.9
申请日：2003-04-07
CPC分类号： F02M59/462 , F02M45/02 , F02M45/04 , F02M45/063 , F02M47/02 , F02M47/027 , F02M57/023 , F02M59/102 , F02M63/0005 , F02M63/0007 , F02M63/0029 , F02M63/0045 , F02M2200/40
摘要： A shut off valve for use in a fuel injection system including an injector, the shut off valve control valve (462) including a shut off valve member (464, 1464) that is operable between open and closed operating positions to control the supply of fuel to the injector (50), the shut off valve member (464, 1464) having a surface exposed to fuel pressure within a shut off control chamber (157), the shut off valve further comprising a control valve (11) for controlling fuel pressure within the shut off valve control chamber (157), thereby to control movement of the shut off valve member (464, 1464) between the open and closed operating positions.
摘要翻译： 一种用于包括喷射器的燃料喷射系统的截止阀，所述截止阀控制阀（462）包括截止阀构件（464,1464），该截止阀构件可在打开和关闭操作位置之间操作以控制燃料供应 所述关闭阀构件（464,1464）具有暴露于关闭控制室（157）内的燃料压力的截止阀构件（464,1464），所述截止阀还包括用于控制燃料压力的控制阀（11） 在关闭阀控制室（157）内，从而控制截止阀构件（464,1464）在打开和关闭操作位置之间的移动。
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公开(公告)号：EP1359316B1
公开(公告)日：2007-04-18
申请号：EP03252188.2
申请日：2003-04-07
发明人： Harcombe, Anthony T. , Knight, Andrew R. , Draper, David E. , Panesar, Lukhbir S. , Williams, Anthony , Law, David
CPC分类号： F02M59/462 , F02M45/02 , F02M45/04 , F02M45/063 , F02M47/02 , F02M47/027 , F02M57/023 , F02M59/102 , F02M63/0005 , F02M63/0007 , F02M63/0029 , F02M63/0045 , F02M2200/40
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公开(公告)号：EP0910739B1
公开(公告)日：2001-10-04
申请号：EP98912246.0
申请日：1998-02-17
申请人： ROBERT BOSCH GMBH
CPC分类号： F02M59/366 , F02M41/125 , F02M45/06 , F02M45/063
摘要： The invention relates to a fuel injection system having a fuel injection pump, the high-pressure delivery of which is determined by an electrically operated valve (24) which controls a discharge channel (21). The high-pressure delivery phase is determined by closing this valve (24). In order to carry out an injection, sub-divided into a pre-injection and a main injection, and in order to simplify control of the electrically operated valve (24), the cam (5) driving the pump piston (1) is so designed as to create an area in which the pump piston (1), in order to interrupt injection between pre-injection and main injection, maintains the position attained, moves backward, or moves forward more slowly, and the valve (24) is controlled in such a way that, at low rotational speed, the pump working area (10) is closed when the pump piston (1) is in front of the beginning of the cam area (V) preceding the area (P), and open when the pump piston (1) is in the cam area (V), and is closed again at the beginning of the cam area (H) following the area (P), before being opened again in order to complete injection; whereas at high rotational speed the first closing of the valve (24) per delivery stroke takes place in the area (P) without prior pre-injection.
摘要翻译： 本发明涉及一种具有燃料喷射泵的燃料喷射系统，其高压输送由控制排放通道（21）的电动阀（24）确定。 高压输送阶段通过关闭该阀（24）来确定。 为了执行分为预喷射和主喷射的喷射，并且为了简化电动阀（24）的控制，驱动泵活塞（1）的凸轮（5）如此 其被设计成创建一个区域，在该区域中，泵活塞（1）为了中断在预喷射和主喷射之间的喷射而保持获得的位置，向后移动或更慢地向前移动，并且阀门（24）被控制 使得当泵活塞（1）位于区域（P）之前的凸轮区域（V）的开始之前时，在低转速下，泵工作区域（10）关闭，并且当 泵活塞（1）位于凸轮区域（V），并且在区域（P）之后的凸轮区域（H）的开始处再次关闭，然后再次打开以完成喷射; 而在高转速下，在没有预先预注射的情况下，每个输送行程的阀（24）的第一次关闭发生在区域（P）中。
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公开(公告)号：EP0859148A2
公开(公告)日：1998-08-19
申请号：EP98102430.0
申请日：1998-02-12
申请人： ZEXEL CORPORATION
发明人： Ohishi, Takashi, c/o Zexel Corporation , Noda, Toshihumi, c/o Zexel Corporation , Yokota, Tohru, c/o Zexel Corporation , Kitahara, Nobuhiro, c/o Zexel Corporation
IPC分类号： F02M45/06
CPC分类号： F02M45/02 , F02M45/063 , F02M59/102 , F02M59/24 , F02M59/38
摘要： An objective of the present invention is to provide a fuel injection pump wherewith, in addition to main injection, pre-injection is made possible in the vicinity of top dead center in the exhaust stroke, and wherewith, by regulating the pre-stroke, defined as the stroke from bottom dead center of a plunger 2 to the commencement of fuel line pressurization, it is possible to freely control both the pre-injection volume and the pre-injection timing relative to the main injection.
Attention having been given to the combining of a pre-stroke varying mechanism together with a two-stage injection mechanism, the present invention is a fuel injection pump that is made so that a pre-stroke is regulated by changing the relative positions, in the axial direction, of a plunger 2 that sends fuel under pressure and a control sleeve 3 that fits around the outside of the plunger 2 so as to slide freely thereon. The cam 4 that drives the plunger 2 comprises a main cam nose 20 for main injection use and a pre cam nose 21 for pre-injection use.摘要翻译： 本发明的目的是提供一种燃料喷射泵，除了主喷射之外，在排气冲程中的上止点附近也可以进行预喷射，并且通过调节前冲程，定义 作为从柱塞2的下止点到燃料管路加压开始的冲程，可以相对于主喷射自由地控制预喷射量和预喷射正时。 本发明提供了一种将前冲程变更机构与两级注入机构组合在一起的注意事项，其特征在于，是通过改变相对位置来调节前冲程的燃料喷射泵， 在压力下发送燃料的柱塞2以及围绕柱塞2的外部配合以便在其上自由滑动的控制套筒3的轴向方向。 驱动柱塞2的凸轮4包括用于主要注射用途的主凸轮鼻20和用于预注射使用的预凸轮鼻21。
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