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    • 51. 发明公开
    • 고압 펌프
    • 高压泵
    • KR1020120018316A
    • 2012-03-02
    • KR1020117026859
    • 2010-03-22
    • 로베르트 보쉬 게엠베하
    • 두트안드레아스
    • F02M59/10F02M59/44F02M63/00F02M41/12F02M45/06
    • F02M59/102F02M59/445F02M2200/02F02M41/128F02M45/063F02M63/00
    • 본 발명은 특히 공기 압축식 자동 점화 내연 기관의 연료 분사 시스템용 방사형 또는 직렬형 피스톤 펌프로서 사용되는 고압 펌프(1)에 관한 것이며, 상기 고압 펌프는 펌프 어셈블리(13)와, 상기 펌프 어셈블리(13)에 할당된 하나 이상의 캠(9)을 포함하는 구동 샤프트(6)를 포함한다. 펌프 어셈블리(13)는 롤러 표면(35)으로써 캠(9)의 작동면(10)에서 롤링하는 캠 롤러(25)를 포함한다. 이 경우, 캠 롤러(25)의 롤러 표면(35)에서의 캠 롤러(25)의 롤링 응력과 캠(9)의 작동면(10)에서의 롤링 응력(9)은 동일한 크기로 사전 설정된다. 이로써, 작동 중 캠(9)과 캠 롤러(25)의 응력이 고 다이내믹인 경우, 두 부품들(9, 25)을 위해 중요한 임계 인장력이 형성되는데 이는 상기 두 부품들(9, 25)을 위해 마찬가지로 중요하다.
    • 本发明涉及一种高压泵(1),其特别用作用于空气压缩自点火内燃机的燃料喷射系统的径向或直列活塞泵,包括泵组件(13)和 驱动器(6)包括分配给泵组件(13)的凸轮(9)。 泵组件(13)包括辊(25),辊(25)在其凸轮(9)的运行表面(10)上滚动。 滚子(25)的辊表面(35)上的辊(25)的滚动强度和凸轮(9)的运行表面(10)的滚动强度(9)被规定为相同。 在操作期间在凸轮(9)和辊(25)的高度动态应力下,这导致两个部件(9,25)的临界阈值张力,这对于两个部件(9,25)同样重要。
    • 52. 发明公开
    • 연료분사시스템
    • 燃油喷射系统
    • KR1020000016503A
    • 2000-03-25
    • KR1019980710089
    • 1998-02-17
    • 로베르트 보쉬 게엠베하
    • 니콜스투아르트-윌리암
    • F02M45/06
    • F02M59/366F02M41/125F02M45/06F02M45/063
    • PURPOSE: A fuel injection system is provided to generate structurally an efficient injection stopping for a certain period and to reduce the amount of fuel injection for lowering the pressure rising of a fuel chamber even in case of being not effected from a valve. CONSTITUTION: 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.
    • 目的:提供燃料喷射系统,以在结构上产生一段时间内的有效的喷射停止,并且即使在不受阀门影响的情况下也可减少燃料喷射量以降低燃料室的压力上升。 构成: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。 通过关闭该阀(24)来确定高压输送阶段。 为了进行分割为预喷射和主喷射的喷射,为了简化电动阀(24)的控制,驱动泵活塞(1)的凸轮(5)是如此 被设计为创建一个区域,其中泵活塞(1)为了中止预注射和主喷射之间的喷射,保持所获得的位置,向后移动或向前移动更慢,并且阀(24)被控制 以这样的方式,当泵活塞(1)处于区域(P)之前的凸轮区域(V)的开始的前方时,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)中,并且在再次打开之前在区域(P)之后的凸轮区域(H)的开始处再次关闭以完成喷射; 而在高转速下,每个输送冲程的阀门(24)首先在区域(P)中进行,而无需预先注入。
    • 55. 发明公开
    • Fuel injection pump
    • 燃油喷射泵
    • EP0859148A3
    • 1999-07-21
    • EP98102430.0
    • 1998-02-12
    • ZEXEL CORPORATION
    • Ohishi, Takashi, c/o Zexel CorporationNoda, Toshihumi, c/o Zexel CorporationYokota, Tohru, c/o Zexel CorporationKitahara, Nobuhiro, c/o Zexel Corporation
    • F02M45/06
    • F02M45/02F02M45/063F02M59/102F02M59/24F02M59/38
    • 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.
    • 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。
    • 56. 发明公开
    • KRAFTSTOFFEINSPRITZSYSTEM
    • 燃油喷射
    • EP0910739A1
    • 1999-04-28
    • EP98912246.0
    • 1998-02-17
    • ROBERT BOSCH GMBH
    • NICOL, Stuart-William
    • F02M41F02M45F02M59
    • F02M59/366F02M41/125F02M45/06F02M45/063
    • 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.
    • 59. 发明公开
    • Variable injection rate high pressure fuel pump
    • 可变喷射率高压燃油泵
    • EP2243951A3
    • 2010-12-08
    • EP10007797.3
    • 2003-09-26
    • Electro-Motive Diesel, Inc.
    • Gottemoller, PaulPoola, Ramesh B.Tupek, Richard WayneGoetzke, Michael Barry
    • F02M59/16F02M59/26F02M45/06
    • F04B49/18F02M45/063F02M59/16F02M59/26
    • 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).
    • 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)。