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公开(公告)号：US07334741B2
公开(公告)日：2008-02-26
申请号：US11044724
申请日：2005-01-28
申请人： Donald J. Benson , David M. Rix , Lester L. Peters , Shankar C. Venkataraman , C. Edward Morris, Jr.
发明人： Donald J. Benson , David M. Rix , Lester L. Peters , Shankar C. Venkataraman , C. Edward Morris, Jr.
IPC分类号： F02D1/06
CPC分类号： F02M47/027 , F02M45/083 , F02M61/042 , F02M63/0017 , F02M63/0022 , F02M2200/315
摘要： A closed nozzle fuel injector is provided which effectively controls the fuel injection flow rate, especially during an initial portion of an injection event, while also permitting accurate control over pilot and/or post injection flow rates at all operating conditions thereby advantageously reducing emissions and combustion noise. The injector includes a rate shaping orifice to restrict fuel flow during an initial portion of an injection event and a rate shaping sleeve mounted for movement to cause a greater flow of injection fuel during a later portion of the injection event. A damping chamber and orifice are also provided to control movement of the rate shaping sleeve.
摘要翻译： 提供了一种封闭的喷嘴燃料喷射器，其特别是在喷射事件的初始部分期间有效地控制燃料喷射流量，同时还允许在所有操作条件下精确控制先导和/或后喷射流量，从而有利地减少排放和燃烧 噪声。 喷射器包括速率成形孔，用于限制喷射事件的初始部分期间的燃料流量，以及安装成用于在喷射事件的稍后部分期间引起更大喷射燃料流量的速率成形套筒。 还提供阻尼室和孔口以控制速率成形套筒的运动。
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公开(公告)号：US07156368B2
公开(公告)日：2007-01-02
申请号：US10823692
申请日：2004-04-14
IPC分类号： F02M47/02
CPC分类号： F02M63/0015 , F02M47/027 , F02M63/0022 , F02M63/004 , F02M63/0043 , F02M63/007 , F02M63/0071 , F02M63/0075 , F02M63/0078 , F02M69/54 , F02M2200/304 , F02M2200/306
摘要： A flow control valve for controlling the flow of fuel in a fuel system including a housing with a fuel passage, a valve device movable to close the fuel passage to block fuel flow through the fuel passage, and to open the fuel passage to permit fuel flow through the fuel passage, a valve plunger engaging the valve device, an actuator for reciprocally moving the valve plunger, an armature overtravel feature for permitting continued movement of the armature relative to the valve plunger from an engaged position into a disengaged position when the valve plunger reaches the extended position, and an armature stop for stopping overtravel of the armature.
摘要翻译： 一种流量控制阀，用于控制燃料系统中的燃料流动，该燃料系统包括具有燃料通道的壳体，阀装置，其可移动以关闭燃料通道以阻止通过燃料通道的燃料流动，并且打开燃料通道以允许燃料流 通过燃料通道，与阀装置接合的阀柱塞，用于往复移动阀柱塞的致动器，衔铁超程特征，用于当电枢柱塞在阀柱塞上时允许衔铁相对于阀柱塞从接合位置继续移动到脱离位置 到达延伸位置，以及用于停止电枢超行程的电枢停止。
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公开(公告)号：US5042721A
公开(公告)日：1991-08-27
申请号：US554429
申请日：1990-07-19
CPC分类号： F02M57/021 , F02M59/30 , F02M61/16 , F02M61/18
摘要： The present invention is directed to open nozzle unit fuel injectors for injecting a metered quantity of fuel into the cylinder of an internal combustion engine, as synchronously controlled by a drive train, wherein the unit fuel injector comprises a body with an axial bore and a plunger assembly movable therein between a retracted position and an advanced position. The plunger includes a major diameter section, slidably movable in the axial bore to open and close a fuel supply orifice and a minor diameter section which extends in a bore of a cup portion of the injector body. The cup portion has an internal surface including plural diameter portions connected by an annular step. In accordance with the present invention, the fuel supply orifice is specifically located within the axial bore and the plunger minor diameter section is designed such that when the plunger is moved from its retracted to its advanced position, a portion of the minor diameter section becomes radially engaged, or almost engaged, with one of the plural cup surface sections before the major diameter plunger section closes the fuel supply orifice. The engagement being between the minor diameter portion and one of the plural cup internal surface sections that will be nearest to one another during the entire range of plunger movement from the retracted to advanced positions.
摘要翻译： 本发明涉及一种用于将计量的燃料喷射到内燃机的气缸中并由传动系统同步控制的开式喷嘴单元燃料喷射器，其中单元燃料喷射器包括具有轴向孔的主体和柱塞 组件可以在缩回位置和前进位置之间移动。 该柱塞包括一个可在轴向孔内滑动移动的大直径部分，以打开和关闭燃料供应孔和在喷射器主体的杯部分的孔中延伸的小直径部分。 杯部具有包括通过环状台阶连接的多个直径部的内表面。 根据本发明，燃料供应孔特别地位于轴向孔内，并且柱塞小直径部分被设计成使得当柱塞从其缩回运动到其前进位置时，小直径部分的一部分变成径向 在大直径柱塞部分关闭燃料供应孔口之前，与多个杯形表面部分中的一个接合或接合。 所述接合位于所述小直径部分和所述多个杯内表面部分中的一个之间，所述多个杯内表面部分在从所述缩回位置到所述前进位置的整个活塞范围期间将彼此最接近。
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公开(公告)号：US5040727A
公开(公告)日：1991-08-20
申请号：US554465
申请日：1990-07-19
申请人： George L. Muntean , Gary L. Gant , C. Edward Morris, Jr. , David Bolis , Kevin L. Vogt , David E. Shultz
发明人： George L. Muntean , Gary L. Gant , C. Edward Morris, Jr. , David Bolis , Kevin L. Vogt , David E. Shultz
IPC分类号： F02M57/02
CPC分类号： F02M57/021
摘要： A unit fuel injector is disclosed to be used in a fuel injection system of an internal combustion engine wherein each unit injector is operated independently from one another and in synchronization with the internal combustion engine. Specifically, the unit injector in accordance with the present invention includes a reciprocating plunger assembly within the unit injector that controls fuel metering as well as fuel injection, and a valve device positioned between a minor diameter plunger section and a cup of the unit injector so as to permit fuel flow in one direction for fuel injection and to restrict flow of gases in the opposite direction. The valve device effectively reduces carbon build-up on the injector surfaces and increases injector longevity while reducing maintenance. Moreover, fuel metering is accurately controlled without substantial carboning flow losses.
摘要翻译： 公开了用于内燃机的燃料喷射系统中的单元燃料喷射器，其中每个单元喷射器彼此独立地并且与内燃机同步地操作。 具体而言，根据本发明的单元喷射器包括在单元喷射器内的往复式柱塞组件，其控制燃料计量以及燃料喷射，以及定位在小直径柱塞部分和单元喷射器杯之间的阀装置，以便 以允许燃料在一个方向上的流动用于燃料喷射并且限制气体沿相反方向的流动。 阀装置有效地减少了喷射器表面的碳积累并且在减少维护的同时增加了喷射器寿命。 此外，燃料计量被精确地控制，而没有实质的碳化流动损失。
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