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公开(公告)号：US5894991A
公开(公告)日：1999-04-20
申请号：US916267
申请日：1997-08-22
申请人： Steven D. Edwards , Dan K. Vetters , Dan K. Hickey , George L. Muntean , Ray J. Amlung , Jeffrey L. Campbell
发明人： Steven D. Edwards , Dan K. Vetters , Dan K. Hickey , George L. Muntean , Ray J. Amlung , Jeffrey L. Campbell
CPC分类号： F02M57/024 , F02M55/04 , F02M57/021 , F02M59/32 , F02M2200/304
摘要： An improved cam operated, open nozzle, unit injector is disclosed including an injector body formed by a barrel, spring housing, and nozzle and containing a central bore for receiving a variable length plunger assembly mounted for reciprocal movement within the injector body wherein the variable length plunger is formed by an outer plunger and inner plunger combined with a timing plunger, mounted between the inner and outer plungers to form a collapsible timing chamber into which a variable quantity of fuel may be metered and expelled on a cycle by cycle basis to provide a variable effective length to the plunger assembly to cause controlled variation in injection timing based on variation in the timing fluid supplied to the injector and wherein the timing plunger is provided with a radial flange for engaging a stop formed in the injector barrel to hold the timing plunger in a predetermined precise location during metering of timing fluid into the collapsible timing chamber and to render the injector timing insensitive to unpredictable pressure variations. The disclosed injector may include a damping chamber for receiving the radial flange of the plunger to eliminate damaging engagement between the timing plunger and the injector barrel. Improved fuel flow passages, check valves and an improved coupling between the outer plunger and the injector's outer return spring are provided along with means for easily changing the rated injection quantity of the disclosed injector.
摘要翻译： 公开了一种改进的凸轮操作的开口喷嘴单元喷射器，其包括由筒体，弹簧壳体和喷嘴形成的喷射器主体，并且包含用于接收安装成用于在喷射器主体内往复运动的可变长度柱塞组件的中心孔，其中可变长度 活塞由外柱塞和内柱塞组成，内柱塞与定时柱塞组合，安装在内柱塞和外柱塞之间以形成可折叠的定时室，可变量的燃料可以逐周期地计量并排出，以提供一个 可变有效长度到柱塞组件，以根据供应给喷射器的定时流体的变化引起喷射正时的受控变化，并且其中定时柱塞设置有径向凸缘，用于接合形成在喷射器筒中的止动件，以保持定时柱塞 在计量定时流体进入可折叠定时室期间的预定精确位置 呃注射器时间对不可预测的压力变化不敏感。 所公开的喷射器可以包括用于接收柱塞的径向凸缘的阻尼室，以消除定时柱塞和喷射器筒之间的有害接合。 提供了改进的燃料流通道，止回阀以及外部柱塞和喷射器的外部复位弹簧之间的改进的联接以及用于容易地改变所公开的喷射器的额定喷射量的装置。
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2.发明授权Variable volume chamber device for preventing leakage in an open nozzle injector 失效可变容积室装置，用于防止在开口喷嘴中泄漏
公开(公告)号：US5845623A
公开(公告)日：1998-12-08
申请号：US899318
申请日：1997-08-13
申请人： Norman C. Blizard , Raymond J. Amlung , George L. Muntean , Edward D. Smith , Mark Pounder , Dan K. Vetters
发明人： Norman C. Blizard , Raymond J. Amlung , George L. Muntean , Edward D. Smith , Mark Pounder , Dan K. Vetters
CPC分类号： F02M57/021 , F02M55/00 , F02M55/007 , F02M57/024 , F02M59/44 , F02M63/0225
摘要： A leak prevention device including an expandable chamber and control valve for preventing fuel leakage into the combustion chambers of a internal combustion engine equipped with a common rail fule injection system including open nozzle injectors and a shut off valve mounted in the common rail upstream of the fuel injectors to isolate, when closed, the fuel injectors from the source of fuel under pressure. The expandable chamber contains a variable volume held in its collapsed condition during engine operation and expanded upon engine shutdown sufficiently to prevent the flow of fuel from any injector into the corresponding combustion chamber. The control valve may be a three way valve for controlling the expansion of the variable volume of the expandable chamber The leak prevention device includes a housing assembly connected with a fuel drain and contains an outlet passage fluidically connected at one end with the variable volume and at the other end with the fuel drain and an outlet check valve for allowing fuel to flow in only one direction from the variable volume into the fuel drain. A control circuit is provided to energize solenoids for operating the shut off valve and control valve.
摘要翻译： 一种防泄漏装置，包括可膨胀室和控制阀，用于防止燃料泄漏到内燃机的燃烧室中，所述内燃机配备有共同轨道注入系统，该共用注入系统包括开放喷嘴注入器和安装在燃料上游的共轨中的截止阀 注射器在关闭时隔离燃料喷射器，从燃料源在压力下。 可膨胀室包含在发动机运行期间保持在其折叠状态的可变容积，并且在发动机关闭时膨胀，足以防止燃料从任何喷射器流入相应的燃烧室。 控制阀可以是用于控制可膨胀室的可变容积的膨胀的三通阀。防漏装置包括与燃油排放器连接的壳体组件，并且包含一端与可变容积流体连接的出口通道，并且在 另一端具有燃料排放口和出口止回阀，用于允许燃料在一个方向上从可变容积流入燃料排放口。 提供一个控制电路来为螺线管通电以操作截止阀和控制阀。
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公开(公告)号：US5566658A
公开(公告)日：1996-10-22
申请号：US427114
申请日：1995-04-21
申请人： Steven D. Edwards , Daniel K. Hickey , Dave A. Olson , George L. Muntean , Chandresh Shah , David L. Eastman
发明人： Steven D. Edwards , Daniel K. Hickey , Dave A. Olson , George L. Muntean , Chandresh Shah , David L. Eastman
CPC分类号： F02F1/4214 , F02M61/14 , F02B2275/10 , F02B3/06 , F02F2001/247
摘要： A clamping load distributor and top stop disposed and connecting between a fuel injector body and a clamping device. The clamping load distributor functions as an intermediary to transmit the static clamping load from the clamping device to the fuel injector body. The clamping load distributor includes a cylindrically shaped main body having a bore extending therethrough that is disposed adjacent a coupling return spring. A cap is connected to the cylindrically shaped main body and functions as a top stop for limiting the outward axial movement of a mechanical linkage. The restriction on axial movement creates a small gap between the moving mechanical parts to allow a coating of lubrication to be obtained. The main body having a pair of clamp receiving portions formed therein for receiving a clamping load. An annular ring is formed on the bottom side of clamping load distributor radially inward from the clamp receiving portions for contacting the upper deck of the fuel injector body. The geometric relationship of the clamping load distributor functions to transfer the static clamping load radially inward towards the fuel injector units center of mass. The transferring of the clamping load radially inward results in a significant decrease in the occurrence of timing plunger seizure within the fuel injector unit.
摘要翻译： 夹紧负载分配器和顶部止动件，其设置并连接在燃料喷射器主体和夹紧装置之间。 夹紧负载分配器用作将夹紧装置的静态夹紧负载传递到燃料喷射器主体的中间件。 夹紧负载分配器包括圆柱形主体，其具有延伸穿过其中的孔，该孔邻近联接复位弹簧设置。 盖子连接到圆柱形主体上，用作限制机械连杆机构的向外轴向运动的顶部止挡件。 轴向移动的限制在移动的机械部件之间产生小的间隙，以允许获得润滑涂层。 该主体具有形成在其中的用于接收夹紧负载的一对夹持器接收部分。 在夹紧负载分配器的底侧上形成有环形环，其从夹具接收部分径向向内形成用于接触燃料喷射器主体的上甲板。 夹紧负载分配器的几何关系用于将静态夹紧负载径向向内转向燃料喷射器单元质心。 径向向内的夹紧负载的传递导致燃料喷射器单元内的定时柱塞卡塞的发生的显着减少。
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公开(公告)号：US06199533B1
公开(公告)日：2001-03-13
申请号：US09241081
申请日：1999-02-01
IPC分类号： F02B300
CPC分类号： F02M59/46 , F02M59/466 , F02M63/0003 , F02M63/0005 , F02M63/0007 , F02M2200/04 , H01L21/2022 , H01L21/3221 , H01L21/3226 , Y10T137/86919
摘要： A three-way fuel injection control valve assembly is provided which includes a pilot valve for controlling the movement of a drain valve member and a separate supply valve member to minimize valve response time and transition flow losses. The solenoid operated two-way pilot valve controls the flow of fuel from a control volume formed adjacent the ends of the drain valve member and the supply valve member to begin and end an injection event. A transition flow loss limiting feature is provided which causes the drain valve member to close prior to the opening of the supply valve member and subsequently causes the supply valve member to close prior to the opening of the drain valve member during a given injection event thereby minimizing transition flow losses. The transition flow loss limiting feature includes sizing the cross sectional areas of the supply valve member and the drain valve member, sizing a bias plunger for biasing the drain valve member and sizing one or more bias springs so that no opening overlap occurs between the supply valve member and the drain valve member.
摘要翻译： 提供一种三通燃料喷射控制阀组件，其包括用于控制排放阀构件和单独的供应阀构件的运动的先导阀，以最小化阀响应时间和过渡流量损失。 螺线管操作的双向先导阀控制从邻近排水阀构件和供给阀构件的端部形成的控制体积的燃料流开始和结束喷射事件。 提供了一种过渡流量损失限制特征，其使得排放阀构件在供给阀构件打开之前关闭，并且随后在给定的注射事件期间使供给阀构件在排水阀构件的打开之前关闭，从而最小化 过渡流量损失。 过渡流量损失限制特征包括确定供应阀构件和排水阀构件的横截面面积，调整偏压柱塞的尺寸以偏置排水阀构件并调整一个或多个偏压弹簧，使得在供给阀 构件和排水阀构件。
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公开(公告)号：US5159911A
公开(公告)日：1992-11-03
申请号：US718981
申请日：1991-06-21
CPC分类号： F02M57/021 , F02M55/00 , F02M59/38
摘要： A fuel leakage prevention system for preventing undesired leakage of fuel into the combustion chambers of an internal combustion engine equipped with a pressure/time, cam actuated unit fuel injection system. The system includes a main housing containing an evacuatable chamber adapted to be connected by a first fluid conduit to a source of sub-atmospheric pressure by a check valve and manual shut off valve. The evacuatable chamber is also adapted to be fluidically connected to a common rail supplying fuel to the injectors by a solenoid controlled valve which is open during engine shutdown and closed during engine operation whereby fuel is withdrawn from the injectors by the vacuum upon engine shutdown.
摘要翻译： 一种用于防止燃料进入配有压力/时间，凸轮致动单元燃料喷射系统的内燃机的燃烧室的不期望的泄漏的燃料泄漏防止系统。 该系统包括一个包含可排气室的主壳体，其适于通过止回阀和手动截止阀由第一流体导管连接到亚大气压源。 可抽空室还适于流体连接到共轨，通过螺线管控制的阀向喷射器供应燃料，该电磁阀在发动机关闭期间打开并且在发动机操作期间关闭，由此在发动机关闭时通过真空从喷射器中抽出燃料。
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公开(公告)号：US5673853A
公开(公告)日：1997-10-07
申请号：US528220
申请日：1995-09-13
申请人： John D. Crofts , Mustahsen Gull , Edward B. Manring , Hisham K. Mozaffar , Jeffrey J. Sullivan , Kevin L. Vogt , Harry L. Wilson , George L. Muntean , Gary L. Gant , Daniel K. Hickey
发明人： John D. Crofts , Mustahsen Gull , Edward B. Manring , Hisham K. Mozaffar , Jeffrey J. Sullivan , Kevin L. Vogt , Harry L. Wilson , George L. Muntean , Gary L. Gant , Daniel K. Hickey
CPC分类号： F02M59/366 , F02M57/023 , F02M59/466
摘要： An electromagnetic fuel injection control valve positioned inside a fuel injector, i.e. a unit injector, for providing fast response and high pressure capability while minimizing the size and complexity of the injector. The control valve includes a valve housing having a supply inlet and fuel outlet, a center tube having a center passage and an annular valve seat, a control valve sleeve slidably mounted on the center tube and an actuator assembly having a coil spring, a stator and an armature. The control valve sleeve moves between an open position permitting fuel to flow between the supply inlet and the fuel outlet and a closed position which sealingly engages the annular valve seat for blocking the flow of fuel between the supply inlet and the fuel outlet. The coil spring biases the control valve sleeve in an open position and is positioned around the center tube. The stator is also axially positioned around the center tube and includes multiple poles. The armature connects to the control valve sleeve and reciprocates when solenoid is activated to allow for high pressure fuel injection into the combustion chamber of an internal combustion engine.
摘要翻译： 位于燃料喷射器内部的电磁燃料喷射控制阀，即单元喷射器，用于在使喷射器的尺寸和复杂度最小化的同时提供快速响应和高压能力。 控制阀包括具有供应入口和燃料出口的阀壳体，具有中心通道和环形阀座的中心管，可滑动地安装在中心管上的控制阀套管和具有螺旋弹簧，定子和 电枢。 控制阀套筒在允许燃料在供应入口和燃料出口之间流动的打开位置和密封地接合环形阀座的关闭位置之间移动，以阻断供应入口和燃料出口之间的燃料流动。 螺旋弹簧将控制阀套件偏压在打开位置并且围绕中心管定位。 定子也围绕中心管轴向定位并且包括多个极。 电枢连接到控制阀套筒，当螺线管被激活以允许高压燃料喷射到内燃机的燃烧室时往复运动。
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7.发明授权Solenoid operated pump-line-nozzle fuel injection system and inline pump therefor 失效电磁式泵线喷嘴燃油喷射系统及其在线泵
公开(公告)号：US5377636A
公开(公告)日：1995-01-03
申请号：US102830
申请日：1993-08-06
CPC分类号： F02M59/30 , F02M57/024
摘要： A pump-line-nozzle fuel injection system in which a supply pump is coupled to a high pressure pump having a plurality of pumping cylinders, each of which has a cam-driven timing plunger and a floating metering plunger. During the retraction stroke, flow to a timing chamber formed between the pistons is blocked by a solenoid valve while the fuel passes into a metering chamber, at the discharge side of the pump, which is closed relative to the high pressure delivery line by a delivery valve. Once the proper quantity of fuel has been metered, the solenoid valve opens allowing fuel to flow into the metering chamber, balancing the pressure on opposite sides of the metering piston, so as to prevent the metering plunger from retracting further as the timing plunger continues to retract. During the compression stroke, at the appropriate time for commencement of injection, the solenoid valve recloses creating a hydraulic link between the metering and timing plungers, so that the fuel is pressurized. Once the fuel is sufficiently pressurized, the delivery valve opens and the fuel is delivered to the injector via the high pressure delivery line. Each pumping cylinder delivers fuel to a respective associated injector for each cylinder of the engine. Compressibility of the fuel and the length of the high pressure delivery line is compensated for by an electronic control module and by making the timing plunger of a larger diameter than the metering plunger so as to obtain a fast pumping rate.
摘要翻译： 一种泵线喷嘴燃料喷射系统，其中供应泵联接到具有多个泵送缸的高压泵，每个泵缸具有凸轮驱动的定时柱塞和浮动计量柱塞。 在回缩行程期间，形成在活塞之间的定时室的流动被电磁阀阻挡，同时燃料进入计量室，在泵的排放侧，其通过输送相对于高压输送管线封闭 阀。 一旦已经计量了适量的燃料，电磁阀打开，允许燃料流入计量室，平衡计量活塞的相对侧上的压力，从而防止计量柱塞进一步收回，因为定时柱塞继续 缩回 在压缩冲程期间，在适当的开始喷射的时候，电磁阀重新关闭，在计量和定时柱塞之间产生液压连杆，使得燃料被加压。 一旦燃料充分加压，则输送阀打开，并且燃料经由高压输送管线输送到喷射器。 每个泵送缸将燃料输送到发动机的每个气缸的相应的相关联的喷射器。 燃料的压缩性和高压输送管线的长度由电子控制模块补偿，并且使定时柱塞的直径大于计量柱塞，从而获得快速的泵送速率。
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公开(公告)号：US5372114A
公开(公告)日：1994-12-13
申请号：US142983
申请日：1993-10-29
申请人： Gary L. Gant , P. Douglas Free , James R. Katzenmeyer , Donald E. Duckworth , George L. Muntean
发明人： Gary L. Gant , P. Douglas Free , James R. Katzenmeyer , Donald E. Duckworth , George L. Muntean
CPC分类号： F01L1/2411 , F02M57/024 , F02M59/102 , F02B3/06
摘要： A hydraulic tappet for use in the fuel injector drive trains of compression ignition or diesel internal combustion engines are provided which optimize injector timing for improved fuel economy. One embodiment of the hydraulic tappet of the present invention includes a dampened pressure regulating feature which determines blow down pressure. A second embodiment of the hydraulic tappet of the present invention includes a dampening load cell feature which allows the blow down pressure of the load cell to be increased and injection timing to be optimally advanced.
摘要翻译： 提供了一种用于压燃式或柴油内燃机的燃油喷射器驱动系的液压挺杆，其优化喷油器正时以提高燃油经济性。 本发明的液压挺杆的一个实施例包括确定排气压力的阻尼压力调节特征。 本发明的液压挺杆的第二实施例包括阻尼载荷传感器特征，其允许增加测力传感器的排气压力并且最佳地提前喷射正时。
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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：US4280659A
公开(公告)日：1981-07-28
申请号：US59543
申请日：1979-07-23
CPC分类号： F02M57/021
摘要： This disclosure relates to a unit-type fuel injector for an internal combustion engine such as a reciprocating piston internal combustion engine. The injector includes an injector body forming a plunger bore, and a plunger that reciprocates in the bore. A fuel supply passage and a drain passage are formed in the body, and a fuel injection chamber is formed at the lower end of the plunger bore. A feed hole connects the chamber with the supply passage, and a scavenge passage connects the supply and drain passages. During a retracted plunger, or fuel metering, portion of the injector cycle, the plunger opens the feed hole and closes the scavenge passage, and during a down plunger, or scavenging, portion of the injector cycle, the plunger closes the feed hole and opens the scavenge passage. An annular groove is formed between injector parts and surrounds the chamber, and the groove collects leakage. A restricted bleed hole connects the groove with the low pressure drain and removes the leakage. The feed hole is at an end of the supply passage, and the incoming fuel flows in a direct path through the supply passage and feed hole to the injection chamber.
摘要翻译： 本公开涉及一种用于诸如往复活塞式内燃机的内燃机的单元型燃料喷射器。 喷射器包括形成柱塞孔的喷射器主体和在孔中往复运动的柱塞。 燃料供给通道和排放通道形成在主体中，并且燃料喷射室形成在柱塞孔的下端。 进料孔将该腔室与供给通道连接起来，并且一个清流通道连接供排通道。 在缩回柱塞或燃料计量期间，喷射器循环的一部分，柱塞打开进料孔并关闭清除通道，并且在喷射器循环的下降柱塞或清扫部分期间，柱塞关闭进料孔并打开 清扫通道。 在喷射器部件之间形成一个环形槽并围绕该腔室，并且凹槽收集泄漏。 限流排放孔将沟槽与低压排水管连接起来，消除泄漏。 进料孔位于供给通道的一端，进入的燃料直接通过供给通道和进料孔流到喷射室。
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