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1.发明授权Apparatus and method for averting the effects of seal failure in an I.C. engine fuel supply system 失效用于避免在I.C.中的密封失效的影响的装置和方法 发动机燃油供应系统
公开(公告)号：US4187817A
公开(公告)日：1980-02-12
申请号：US948872
申请日：1978-10-05
CPC分类号： F02M59/205 , F02D1/065 , F02D7/002 , Y10T137/5762
摘要： An air fuel ratio control for an I.C. engine fuel supply system is disclosed including a diaphragm operator for a fuel flow modulating valve responsive to engine intake manifold pressure as sensed through an air line connecting the diaphragm operator with the intake manifold and a drain line for returning to the engine fuel tank all fuel which may leak into the diaphragm operator due to seal rupture. The disclosed system further including a specially designed flow restrictor in the air line to prevent engine fuel tank pressurization and reverse fuel flow into the engine's intake manifold should the diaphragm operator rupture. The flow restrictor includes a control orifice which is sufficiently large to allow proper control by the diaphragm operator but yet not so large as to allow fuel tank pressurization should the diaphram rupture. In one embodiment the flow restrictor includes a check valve designed to close only upon improper fuel flow from the air fuel control to the intake manifold. To avoid manufacturing tolerances, the check valve may be calibrated to close at precisely the proper miminal flow rate.
摘要翻译： 空气燃料比控制 公开了一种发动机燃料供应系统，包括用于燃料流量调节阀的隔膜操作器，其响应于通过将隔膜操作器与进气歧管连接的空气管线和用于将发动机燃料箱返回到发动机燃料箱的所有燃料来检测的发动机进气歧管压力 由于密封破裂，可能会泄漏到隔膜操作器中。 所公开的系统还包括在空气管线中专门设计的限流器，以防止发动机燃料箱加压，并且如果隔膜操作器破裂，则将燃料反向流入发动机的进气歧管。 流量限制器包括一个足够大的控制孔口，以便能够通过隔膜操作器进行适当的控制，但不会如此大，以致允许燃油箱在隔膜破裂时加压。 在一个实施例中，限流器包括止回阀，其设计成仅在从空气燃料控制到进气歧管的不当燃料流动时才闭合。 为了避免制造公差，可以校准止回阀以精确地以适当的模拟流速关闭。
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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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公开(公告)号：US4813600A
公开(公告)日：1989-03-21
申请号：US109048
申请日：1987-10-16
CPC分类号： F02M61/161 , F02M53/04 , F02M55/002 , F02M57/021 , F02M61/168
摘要： An improved, simplified pressure/time dependent fuel injector assembly for injecting fuel intermittently into a combustion chamber of an internal combustion engine. The injector assembly includes a unitary or single-piece injector body which has at least one groove-like channel on the exterior surface thereof. The channel is closed and sealed by a sleeve which is press-fit about that portion of the injector body on which the channel lies. For reciprocation within the injector body, there is provided an injector-plunger assembly which includes a top stop mechanism for adjustably setting the distance traveled by the plunger assembly during the reciprocatory movement thereof.
摘要翻译： 一种用于将燃料间歇地喷射到内燃机的燃烧室中的改进的，简化的压力/时间依赖性燃料喷射器组件。 喷射器组件包括在其外表面上具有至少一个凹槽状通道的整体或单件式喷射器主体。 通道被封闭并被套筒密封，套管围绕通道所在的喷射器主体的该部分压配合。 为了在喷射器主体内往复运动，提供了一种喷射器 - 柱塞组件，其包括顶部止动机构，用于可调节地设定柱塞组件在往复运动期间行进的距离。
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公开(公告)号：US4248188A
公开(公告)日：1981-02-03
申请号：US974563
申请日：1978-12-29
申请人： Harry L. Wilson , David E. Shultz
发明人： Harry L. Wilson , David E. Shultz
摘要： A diaphragm operated, air fuel control system for controlling the rate of fuel flow to an internal combustion engine in response to intake manifold pressure is disclosed wherein the transient response of the diaphragm operator is attenuated by a fuel filled control chamber. An attenuator assembly connected with the control chamber causes fuel to be supplied to the chamber at a rate which is greater than the rate at which fuel may be discharged from the control chamber. In one embodiment the chamber is formed on the side of the diaphragm operator which is opposite to the side to which intake manifold pressure is supplied. In another embodiment the control chamber is formed to receive one end of a plunger valve connected with the diaphragm operator.
摘要翻译： 公开了一种用于响应于进气歧管压力控制到内燃机的燃料流量的隔膜操作的空气燃料控制系统，其中隔膜操作器的瞬态响应被填充燃料的控制室衰减。 与控制室连接的衰减器组件使燃料以比可以从控制室排出燃料的速率大的速率供应到腔室。 在一个实施例中，腔室形成在隔膜操作器的与供应进气歧管压力的一侧相对的侧面上。 在另一个实施例中，控制室形成为接收与隔膜操作器连接的柱塞阀的一端。
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公开(公告)号：US4393825A
公开(公告)日：1983-07-19
申请号：US221768
申请日：1980-12-31
CPC分类号： F02M63/0215 , F02D17/02
摘要： A system is provided for controlling fuel flow within an internal combustion engine having a plurality of cylinders. The system includes a fuel source; a fuel pump responsive to the engine speed; and a multimode adjustable control valve connected to the fuel pump and a predetermined number of first cylinders. The control valve, when in a first mode, substantially shutting off fuel flow to the first cylinders, except for a minimal amount of fuel leakage from the valve to the first cylinders for lubricating purposes. When in a second mode, the control valve allows substantial fuel flow to the first cylinders. The control valve assumes its first mode when the operating temperature is below a predetermined amount and/or the engine is operating under a predetermined load.
摘要翻译： 提供一种用于控制具有多个气缸的内燃机内的燃料流量的系统。 该系统包括燃料源; 响应于发动机转速的燃料泵; 以及连接到燃料泵和预定数量的第一气缸的多模式可调控制阀。 当处于第一模式时，控制阀基本上关闭到第一气缸的燃料流，除了用于润滑目的从阀到第一气缸的最小量的燃料泄漏。 当处于第二模式时，控制阀允许大量燃料流向第一气缸。 当操作温度低于预定量和/或发动机在预定负载下操作时，控制阀呈现其第一模式。
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