Variable injection rate high pressure fuel pump
    1.
    发明公开
    Variable injection rate high pressure fuel pump 审中-公开
    Einpritzmenggeschwindigkeit Brennstoffhochdruckpumpe

    公开(公告)号:EP2243951A2

    公开(公告)日:2010-10-27

    申请号:EP10007797.3

    申请日:2003-09-26

    IPC分类号: F02M59/16 F02M59/26 F02M45/06

    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,包括泵体,形成在泵体内的泵筒和可在泵缸内往复运动的活塞,其限定加压室(120)。 泵活塞(106)具有减小的直径部分,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)邻接与加压室(120)相对的次级活塞(116)。 致动通道设置在回流燃料排放口和致动室(122)之间,该致动室通过泵活塞(106)的运动和/或动态地通过致动电磁阀(128)的动作而被动地选择性地打开或关闭。 如果致动室通道(124)打开,则在加压行程期间,次级活塞(116)将相对于泵体保持静止,但是如果其被关闭,则第二活塞(116)必须与主要活塞 活塞(112)。

    Variable injection rate high pressure fuel pump
    2.
    发明公开
    Variable injection rate high pressure fuel pump 有权
    可变喷射率高压燃油泵

    公开(公告)号:EP1418335A3

    公开(公告)日:2008-04-16

    申请号:EP03021861.4

    申请日:2003-09-26

    IPC分类号: F02M59/16 F02M59/26 F02M45/06

    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 defines 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 (124) is provided between a return fuel drain and the ctuation 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,活塞限定加压室(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设备室(122)之间提供致动通道(124),其通过泵活塞(106)移动被动地选择性地打开或关闭和/或通过操作致动电磁阀(128)动态地打开或关闭。 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)。

    Fuel injection system
    4.
    发明公开
    Fuel injection system 有权
    燃油喷射系统

    公开(公告)号:EP1359316A3

    公开(公告)日:2003-12-03

    申请号:EP03252188.2

    申请日:2003-04-07

    IPC分类号: F02M47/02 F02M59/36 F02M63/02

    摘要: A fuel injection system for supplying pressurised fuel to a fuel injector (50), the fuel injection system comprising an accumulator volume (59) for supplying fuel at a first injectable pressure level (P1) to the fuel injector (50) through a fuel supply passage (52), pump means (63) for increasing the pressure of fuel supplied to the injector (50) to a second injectable pressure level (P2), and valve means (62, 162, 262, 362) operable between a first position in which fuel at the first injectable pressure level (P1) is supplied to the injector (50) and a second position in which communication between the injector (50) and the accumulator volume (59) is broken so as to permit fuel at the second injectable pressure (P2) to be supplied to the injector. The injection system may include valve means in the form of a three-position valve (262) or may include a shut off valve (464; 1464) for controlling the supply of fuel through the fuel supply passage (52).

    摘要翻译: 1。一种用于将加压燃料供应到燃料喷射器(50)的燃料喷射系统,所述燃料喷射系统包括用于通过燃料供应装置将燃料以第一可注射压力水平(P1)供应到燃料喷射器(50)的蓄积器容积(59) 通道(52),用于将供应到喷射器(50)的燃料压力增加到第二可注射压力水平(P2)的泵装置(63),以及可在第一位置和第二位置之间操作的阀装置(62,162,262,362) 其中在第一可注射压力水平(P1)处的燃料被供应到喷射器(50),在第二位置中,喷射器(50)和蓄压器体积(59)之间的连通被打破,从而允许第二 注射压力(P2)供应给注射器。 注射系统可以包括三位阀(262)形式的阀装置或者可以包括用于控制通过燃料供应通道(52)的燃料供应的截流阀(464; 1464)。

    Fuel injection system
    5.
    发明公开
    Fuel injection system 有权
    Kraftstoffeinspritzeinrichtung

    公开(公告)号:EP1359316A2

    公开(公告)日:2003-11-05

    申请号:EP03252188.2

    申请日:2003-04-07

    IPC分类号: F02M47/02 F02M59/36 F02M63/02

    摘要: A fuel injection system for supplying pressurised fuel to a fuel injector (50), the fuel injection system comprising an accumulator volume (59) for supplying fuel at a first injectable pressure level (P1) to the fuel injector (50) through a fuel supply passage (52), pump means (63) for increasing the pressure of fuel supplied to the injector (50) to a second injectable pressure level (P2), and valve means (62, 162, 262, 362) operable between a first position in which fuel at the first injectable pressure level (P1) is supplied to the injector (50) and a second position in which communication between the injector (50) and the accumulator volume (59) is broken so as to permit fuel at the second injectable pressure (P2) to be supplied to the injector. The injection system may include valve means in the form of a three-position valve (262) or may include a shut off valve (464; 1464) for controlling the supply of fuel through the fuel supply passage (52).

    摘要翻译: 一种用于向燃料喷射器(50)供应加压燃料的燃料喷射系统,所述燃料喷射系统包括用于通过燃料供应器向燃料喷射器(50)供应燃料的第一可注射压力水平(P1)的蓄能器容积(59) 通道(52),用于将供给到喷射器(50)的燃料的压力增加到第二可注射压力水平(P2)的泵装置(63),以及阀装置(62,162,262,362),其可在第一位置 其中在所述第一可注射压力水平(P1)的燃料被供应到所述喷射器(50);以及第二位置,其中所述喷射器(50)和所述储存器容积(59)之间的连通被破坏,以便允许在所述第二喷射器 注射压力(P2)供给喷射器。 注射系统可以包括三位置阀(262)形式的阀装置,或者可以包括用于控制通过燃料供给通道(52)的燃料供应的截止阀(464; 1464)。 一种用于向燃料喷射器(50)供应加压燃料的燃料喷射系统,所述燃料喷射系统包括用于将燃料以第一可注射压力水平(P1)供应到燃料喷射器(50)的蓄能器容积(59) 燃料供给通道(52),用于将供应到喷射器(50)的燃料的压力增加到第二可注射压力水平(P2)的泵装置(63),以及阀装置(62,162,262,362) 第一位置,其中将第一可注射压力水平(P1)的燃料供应到喷射器(50);以及第二位置,其中喷射器(50)和蓄能器容积(59)之间的连通被打破以允许燃料 在第二可注射压力(P2)下被供给到喷射器。 注射系统可以包括三位置阀(262)形式的阀装置,或者可以包括用于控制通过燃料供给通道(52)的燃料供应的截止阀(464; 1464)。

    Fuel injection system
    6.
    发明公开
    Fuel injection system 审中-公开
    燃油喷射系统

    公开(公告)号:EP1826397A3

    公开(公告)日:2009-08-05

    申请号:EP07006298.9

    申请日:2003-04-07

    IPC分类号: F02M59/46 F02M63/00

    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中的截止阀,所述截止阀控制阀(462)包括截止阀构件(464,1464),所述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的供应 所述截止阀构件(464,1464)具有暴露于关闭控制室(157)内的燃料压力的表面,所述截止阀还包括控制阀(11),所述控制阀(11)用于控制燃料压力 在关闭阀控制室(157)内,由此控制关闭阀构件(464,1464)在打开和关闭操作位置之间的运动。

    FUEL INJECTION SYSTEM
    7.
    发明公开
    FUEL INJECTION SYSTEM 审中-公开
    燃油喷射系统

    公开(公告)号:EP1516115A1

    公开(公告)日:2005-03-23

    申请号:EP03722810.3

    申请日:2003-05-01

    摘要: A fuel system for use in an internal combustion engine, particularly of the type provided with an after treatment device for reducing emissions levels, comprises a fuel pump (10) having a pumping cycle during which fuel is pressurized to a high level within a pumping chamber for delivery to an injector (14). The injector (14) is arranged to provide a primary fuel injection event, and a secondary fuel injection event within the same pumping cycle, in use. The injector (14) includes a valve needle (16) which is engageable with a valve needle seating to control fuel delivery through an injector (14) and injection control valve means for controlling movement of the valve needle (16) so as to control the primary and secondary fuel injection events. The primary injection event may be a main injection of fuel, and the secondary injection event may be a late-post injection of fuel for regeneration of the after treatment device. Engine having an after treatment device.

    摘要翻译: 用于内燃机的燃料系统,尤其是设置有用于降低排放水平的后处理装置的内燃机的燃料系统包括具有泵送循环的燃料泵(10),在泵送循环期间,燃料在泵室内被加压至高水平 用于输送到注射器(14)。 喷射器(14)被布置成在使用中提供在相同泵送循环内的主燃料喷射事件和次级燃料喷射事件。 喷射器(14)包括阀针(16),该阀针可与阀针座接合以控制通过喷射器(14)的燃料输送;以及喷射控制阀装置,用于控制阀针(16)的移动以控制 主要和次要燃料喷射事件。 主喷射事件可以是燃料的主喷射,并且次喷射事件可以是后期喷射燃料以用于后处理装置的再生。 发动机有后处理装置。

    Variable injection rate high pressure fuel pump
    8.
    发明公开
    Variable injection rate high pressure fuel pump 有权
    Einstellbarer Einspritzmengengeschwindigkeit Brennstoffhochdruckpumpe

    公开(公告)号:EP1418335A2

    公开(公告)日:2004-05-12

    申请号:EP03021861.4

    申请日:2003-09-26

    IPC分类号: F02M59/16 F02M59/26 F02M45/06

    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 defines 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 (124) is provided between a return fuel drain and the ctuation 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,形成在泵体内的泵筒体和能够在泵缸内往复运动的活塞,其限定了加压室(120)。 泵活塞(106)具有减小的直径部分,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)邻接与加压室(120)相对的次级活塞(116)。 致动通道(124)设置在回流燃料排出口和致动腔室(122)之间,泵通过泵活塞(106)的运动和/或通过致动电磁阀(128)的动作来动态选择性地打开或关闭。 如果致动室通道(124)打开,则在加压行程期间,次级活塞(116)将相对于泵体保持静止,但是如果其被关闭,则第二活塞(116)必须与主要活塞 活塞(112)。