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公开(公告)号：US5713335A
公开(公告)日：1998-02-03
申请号：US659619
申请日：1996-06-06
申请人： Julius P. Perr , Lester L. Peters , Amarjit S. Ghuman , Benjamin M. Yen , Edward D. Smith , David L. Buchanan , Yul J. Tarr , Laszlo D. Tikk , Andrew G. Stiles
发明人： Julius P. Perr , Lester L. Peters , Amarjit S. Ghuman , Benjamin M. Yen , Edward D. Smith , David L. Buchanan , Yul J. Tarr , Laszlo D. Tikk , Andrew G. Stiles
CPC分类号： F02D1/16 , F01L13/0063 , F02D1/183 , F02M57/023 , F02M59/102
摘要： In accordance with preferred embodiments of the invention a timing adjustment device includes a cam follower that is engaged between an overhead cam and an injector rocker arm, and is mounted on a rotatable eccentric shaft. The geometry of the eccentric shaft and cam follower is designed so that, as timing is varied by rotation of the eccentric shaft, no change is produced in the vertical height of the rocker arm when the cam shaft is on the outer base circle and the injector is bottomed, in order to assure that the "mechanical crush" of the PT type injector is constant despite changes in timing. In a first application of the timing arrangement, it is used together with a simple injector, which does not utilize a multi-plunger arrangement to form a hydraulic link, to achieve lower parasitic losses. To obtain independent control over injection pressure and timing, a fuel injector in which a hydraulic link is formed between plungers of a multi-plunger arrangement is used with the timing arrangement in order to allow the injection pressure to be maintained constant over a wide range of engine speeds without interfering with engine timing.
摘要翻译： 根据本发明的优选实施例，定时调节装置包括凸轮从动件，其接合在顶置凸轮和喷射器摇臂之间，并安装在可旋转的偏心轴上。 偏心轴和凸轮从动件的几何形状被设计成使得当定时通过偏心轴的旋转而变化时，当凸轮轴在外基圆上时，在摇臂的垂直高度上不产生变化，并且喷射器 是为了确保PT型喷射器的“机械挤压”在时间上有变化时是恒定的。 在定时装置的第一应用中，它与简单的喷射器一起使用，其不利用多柱塞装置来形成液压连杆，以实现更低的寄生损耗。 为了获得对喷射压力和时间的独立控制，在定时装置中使用其中在多柱塞装置的柱塞之间形成液压连杆的燃料喷射器，以便允许喷射压力在宽范围内保持恒定 发动机转速，而不会干扰发动机定时。
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公开(公告)号：US5611317A
公开(公告)日：1997-03-18
申请号：US513201
申请日：1995-08-09
申请人： Lester L. Peters , Julius P. Perr , Yul J. Tarr
发明人： Lester L. Peters , Julius P. Perr , Yul J. Tarr
CPC分类号： F02M57/024 , F02M57/021 , F02M59/102
摘要： A cam operated open nozzle fuel injector is provided comprising a reciprocating plunger assembly including an outer plunger, an inner plunger and a variable volume timing chamber located between the plungers. A hold down force generating means includes a cam having a hold down cam or ramp portion for maintaining the inner plunger in an innermost position against the inner end of the injector body with a sufficient hold down force during each hold down period throughout injector operation independently of injector train wear. The hold down cam portion operates to move the outer plunger inwardly towards the inner plunger throughout a substantial portion of the hold down period. The hold down cam portion functions to compensate for fuel drainage from the timing chamber so as to maintain a predetermined pressure in the timing chamber corresponding to a desired hold down force. The hold down force generating device is capable of maintaining timing fluid in the timing chamber throughout the hold down period and may include a timing chamber drain regulating valve for controlling the drainage of fluid from the timing chamber.
摘要翻译： 提供了一种凸轮操作的开放喷嘴燃料喷射器，其包括往复式柱塞组件，其包括位于柱塞之间的外柱塞，内柱塞和可变容积定时室。 压紧力产生装置包括具有压紧凸轮或斜面部分的凸轮，用于在每个压紧操作期间以足够的压紧力将内柱塞保持在最靠近喷射器主体的内端的位置，同时具有足够的压紧力， 喷油器列车磨损。 压紧凸轮部分操作以在整个保持期的大部分期间将外柱塞向内移动到内柱塞。 压紧凸轮部分用于补偿来自定时室的燃料排放，以便在对应于期望的压下力的定时室中保持预定的压力。 压紧力产生装置能够在整个压紧时段内保持定时室中的定时流体，并且可以包括用于控制来自定时室的流体排放的定时室排水调节阀。
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公开(公告)号：US5441027A
公开(公告)日：1995-08-15
申请号：US208365
申请日：1994-03-10
CPC分类号： F02M57/026 , F02M57/02 , F02M57/021 , F02M57/024 , F02M57/025 , F02M59/105 , F02M59/366
摘要： A metering system is provided which controls the amount of fuel supplied to the combustion chambers of a multi-cylinder internal combustion engine comprising a fuel pump for supplying fuel at low pressure to a first and a second group of unit fuel injectors, a first solenoid-operated fuel control valve controlling the flow of fuel to the first set of injectors and a second solenoid-operated fuel control valve controlling the flow of fuel to the second set of injectors. The system may also include first and second solenoid-operated timing fluid control valves associated with the first and the second group of injectors, respectively. The injectors are capable of being in the fuel receiving mode, establishing a metering period, and the timing receiving mode, establishing a timing period, at the same time to increase the amount of time available for metering both timing fluid and fuel. By grouping the various injectors based on the order of injection so that the injectors from each group are placed in the injection mode in spaced periods throughout each cycle of the engine, e.g. injectors from other groups injecting in the period of time between each injection mode, the system can be designed to permit longer metering and timing periods.
摘要翻译： 提供一种计量系统，其控制供应到多缸内燃机的燃烧室的燃料的量，该多缸内燃机包括用于将低压燃料供应给第一和第二组单元燃料喷射器的燃料泵，第一螺线管 - 控制燃料流向第一组喷射器的燃料控制阀以及控制燃料流向第二组喷射器的第二电磁操作燃料控制阀。 该系统还可以包括分别与第一组和第二组喷射器相关联的第一和第二电磁操作定时流体控制阀。 喷射器能够处于燃料接收模式，建立计量周期和定时接收模式，同时建立定时周期，以增加可用于计时定时流体和燃料的时间量。 通过基于喷射顺序对各种喷射器进行分组，使得来自每个组的喷射器在发动机的每个循环中以间隔的时间间隔放置在喷射模式中，例如， 在每次注射模式之间的时间段内注入其他组的注射器，该系统可以被设计为允许更长的测量和定时周期。
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公开(公告)号：US5979803A
公开(公告)日：1999-11-09
申请号：US939007
申请日：1997-09-26
申请人： Lester L. Peters , Julius P. Perr , Benjamin M. Yen , George L. Muntean , J. Victor Perr , John D. Crofts
发明人： Lester L. Peters , Julius P. Perr , Benjamin M. Yen , George L. Muntean , J. Victor Perr , John D. Crofts
CPC分类号： F02M47/046 , F02M51/0603 , F02M51/061 , F02M51/0653 , F02M51/0657 , F02M61/042 , F02M2200/702
摘要： An improved fuel injector for providing precise control over injection timing, quantity and rate shape is provided which includes a fuel pressure balancing device for balancing the fuel pressure forces acting on a needle valve element while the element is in both the closed and open positions thereby permitting an actuator to more precisely and predictably control the movement of the needle valve element. The fuel pressure balancing device includes a cavity formed in the needle valve element and pressure balancing surfaces formed on the needle valve element and positioned in the cavity. The actuator may be a piezoelectric actuator for compressing actuating fluid in an actuating fluid circuit which includes a fluid chamber positioned adjacent a needle valve element and fluidically separate from a fuel supply circuit for supplying high pressure fuel for injection. Actuating fluid pressure in the chamber acts on the needle valve element to initiate injection. In another embodiment, the needle valve element is directly controlled by a solenoid actuator.
摘要翻译： 提供了一种用于提供对喷射正时，数量和速率形状的精确控制的改进的燃料喷射器，其包括用于平衡作用在针阀元件上的燃料压力的燃料压力平衡装置，同时元件处于关闭位置和打开位置，从而允许 致动器以更精确和可预测地控制针阀元件的运动。 燃料压力平衡装置包括形成在针阀元件中的空腔和形成在针阀元件上并定位在空腔中的压力平衡表面。 致动器可以是用于压缩致动流体回路中的致动流体的压电致动器，该致动流体回路包括邻近针阀元件定位的流体室，并与用于喷射高压燃料的燃料供应回路流体分离。 腔室中的致动流体压力作用在针阀元件上以开始注射。 在另一个实施例中，针阀元件由螺线管致动器直接控制。
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公开(公告)号：US5518030A
公开(公告)日：1996-05-21
申请号：US354287
申请日：1994-12-12
IPC分类号： F02M59/46 , F15B13/04 , F15B13/044 , F16K11/044 , F16K31/06
CPC分类号： F16K31/0627 , F02M59/466 , F15B13/0405 , F15B13/044 , F16K11/044 , F02M2200/04 , F15B2013/041 , Y10T137/86622 , Y10T137/86678 , Y10T137/86686
摘要： A solenoid valve for use in a fuel system includes a valve body with a central core and three interconnected passageways. A spool is disposed within the central core and by means of enlarged and reduced diameter portions controls the flow through the solenoid valve. Solenoid armatures cooperatively control movement of the valve spool which is sized and shaped so as to provide a fuel flow path from an inlet passageway to an outlet passageway when the solenoid valve is in an opened condition. When the spool is shifted to a closed condition, incoming fuel is blocked and a flow path is created from the output passageway to a drain passageway, The drain passageway allows excess fuel in the injector to drain to relieve fuel pressure on the metering plunger. As the spool moves from a closed condition to an opened condition, some fuel flows to the drain passageway. The amount of fuel "loss" depends on the speed of the spool and the size of the drain passageway. In order to avoid the higher cost associated with drilling a small diameter hole through the valve body, a larger drilled hole is used. The enlarged end of the valve spool is extended so as to block a substantial portion of the drain passageway orifice. The blocked orifice yields a smaller flow through area and this reduced flow orifice area reduces transition loss and cavitation.
摘要翻译： 用于燃料系统的电磁阀包括具有中心芯的阀体和三个相互连接的通道。 阀芯设置在中心芯内，并且通过放大和缩小的直径部分控制通过电磁阀的流量。 螺线管电枢协调地控制阀芯的运动，该阀芯的尺寸和形状被设计成当电磁阀处于打开状态时提供从入口通道到出口通道的燃料流动路径。 当阀芯移动到关闭状态时，进入的燃料被堵塞并且从输出通道到排水通道产生流动通道。排放通道允许喷射器中的过量燃料排出以减轻计量柱塞上的燃料压力。 当阀芯从关闭状态移动到打开状态时，一些燃料流向排放通道。 燃料“损失”的数量取决于阀芯的速度和排水通道的大小。 为了避免与通过阀体钻出小直径孔相关联的较高成本，使用较大的钻孔。 阀芯的扩大端部被延伸以阻塞排水通道孔口的大部分。 堵塞的孔产生较小的流过面积，并且该减小的流动孔面积减小了过渡损失和空化。
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公开(公告)号：US5899389A
公开(公告)日：1999-05-04
申请号：US867356
申请日：1997-06-02
CPC分类号： F02M61/182 , F02M45/086 , F02M2200/46 , F02M47/027
摘要： A fuel injector assembly is provided which operates to effectively creating a low injection flow rate followed by a high injection flow rate during all engine operating conditions, including idle and low engine speed conditions, to produce a high quality fuel spray with proper atomization and thus improved fuel air mixing resulting in improved emissions abatement and fuel economy. The assembly includes two biased valve elements designed to sequentially open and close to initially open a limited number of orifices followed by the opening of a remainder of the orifices thereby effectively varying the available cross sectional flow area from the nozzle cavity into the combustion chamber of the engine during the injection event. The nozzle valve elements may be spring biased or fluid pressure biased and include biasing surfaces sized to cause the sequential opening and closing of the elements.
摘要翻译： 提供了一种燃料喷射器组件，其操作以在所有发动机操作条件（包括空转和低发动机转速条件）下有效地产生低喷射流量，随后是高喷射流量，以产生具有适当雾化的高质量燃料喷雾，从而改善 燃料空气混合，从而改善减排和燃油经济性。 组件包括两个偏压的阀元件，设计成顺序地打开和关闭以初始打开有限数量的孔，随后打开剩余的孔，从而有效地改变从喷嘴腔到燃烧室的可用横截面流动面积 发动机在注射事件期间。 喷嘴阀元件可以是弹簧偏置或流体压力偏置的，并且包括尺寸适于引起元件的顺序打开和关闭的偏置表面。
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公开(公告)号：US5765755A
公开(公告)日：1998-06-16
申请号：US787963
申请日：1997-01-23
申请人： Lester L. Peters , Julius P. Perr , A. S. Ghuman , Benjamin M. Yen , Chad L. Buchanan , Robert Samuel , Kevin L. Vogt , John T. Carroll, III , James E. Denton , David E. Schisler
发明人： Lester L. Peters , Julius P. Perr , A. S. Ghuman , Benjamin M. Yen , Chad L. Buchanan , Robert Samuel , Kevin L. Vogt , John T. Carroll, III , James E. Denton , David E. Schisler
CPC分类号： F02M61/18 , F02M45/10 , F02M61/042 , F02M61/168
摘要： An injection rate shaping nozzle assembly for a fuel injector is provided which includes a closed nozzle valve element and a rate shaping control device including an injection spill circuit for spilling a portion of the fuel to be injected to produce a predetermined time varying change in the flow rate of fuel injected into a combustion chamber. The spill circuit includes a spill passage integrally formed in the nozzle valve element. The rate shaping control device may include a spill accelerating chamber in formed in the nozzle valve element for creating a rapid increase in the spill flow rate. A spill circuit purge device is provided to remove fuel from the spill circuit and accelerating chamber between each of the injection events thereby ensuring an unimpeded, effective spill fuel flow during the next spill event. The purge device includes a purge passage formed of a predetermined size for restricting the flow of purge gas to ensure sufficient fuel removal from the injection spill circuit while avoiding excessive purge gas flow. The purge passage may include an annular clearance gap formed between the nozzle valve element and the nozzle housing wall, or alternatively, may include an orifice passage formed in the inner portion of the nozzle valve element. An improved method for forming a nozzle valve element having an axial center passage is also disclosed.
摘要翻译： 提供了一种用于燃料喷射器的喷射率成形喷嘴组件，其包括封闭的喷嘴阀元件和速率整形控制装置，该速率整形控制装置包括用于溢出待喷射的燃料的一部分以产生流量的预定时变变化的喷射泄漏电路 喷入燃烧室的燃料的速率。 泄漏回路包括一体形成在喷嘴阀元件中的溢流通路。 速率整形控制装置可以包括形成在喷嘴阀元件中的溢流加速室，用于产生溢流量的快速增加。 提供溢流回路吹扫装置以在每次喷射事件之间从泄漏回路和加速室中除去燃料，从而确保在下一个溢出事件期间不受阻碍地有效地溢出燃料流。 净化装置包括由预定尺寸形成的吹扫通道，用于限制净化气体的流动，以确保足够的燃料从喷射泄漏电路中移除，同时避免过多的吹扫气体流动。 净化通道可以包括形成在喷嘴阀元件和喷嘴壳体壁之间的环形间隙，或者可以包括形成在喷嘴阀元件的内部中的孔口通道。 还公开了一种用于形成具有轴向中心通道的喷嘴阀元件的改进方法。
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公开(公告)号：US5619969A
公开(公告)日：1997-04-15
申请号：US563344
申请日：1995-11-28
申请人： Chung Y. Liu , Benjamin M. Yen , Lester L. Peters , Julius P. Perr , Russ P. Durrett , Donald N. Case , Dennis Ashwill , Chris Sorg , John Lane , Mark Cavanagh
发明人： Chung Y. Liu , Benjamin M. Yen , Lester L. Peters , Julius P. Perr , Russ P. Durrett , Donald N. Case , Dennis Ashwill , Chris Sorg , John Lane , Mark Cavanagh
IPC分类号： F02M37/00 , F02M41/16 , F02M45/12 , F02M55/02 , F02M57/02 , F02M59/08 , F02M59/46 , F02M63/00 , F02M7/00 , F02M37/04
CPC分类号： F02M63/0007 , F02M41/16 , F02M45/12 , F02M55/02 , F02M57/025 , F02M59/08 , F02M63/0003 , F02M63/0015 , F02M2200/30
摘要： A fuel injection rate shaping control system is provided which effectively controls the flow rate of fuel injected into the combustion chamber of an engine to improve combustion and reduce emissions by controlling the rate of pressure increase during injection. The injection rate shaping control system includes a rate shaping control device including a rate shaping transfer passage having a predetermined length and diameter specifically designed to create a desired injection pressure rate shape. In other embodiments of the present invention, two or more rate shaping transfer passages capable of producing distinct rate shapes are packaged in various fuel injection systems to selectively provide various rate shapes depending on operating conditions. Switching valves, i.e., solenoid operated three-way valves, may be used to direct the fuel or timing fluid flow to any one of the rate shaping transfer passages. Also, a dampening means in the form of a reverse flow restrictor valve is positioned in the rate shaping transfer passage to dampen reflected pressure waves thereby minimizing the adverse effects thereof.
摘要翻译： 提供一种燃料喷射率成形控制系统，其有效地控制喷射到发动机的燃烧室中的燃料的流量，以通过控制喷射期间的压力增加率来改善燃烧并减少排放。 喷射率成形控制系统包括速率成形控制装置，其包括具有预定长度和直径的速率整形传送通道，其特别设计成产生所需的喷射压力速率形状。 在本发明的其它实施例中，能够产生不同速率形状的两个或更多个速率成形传送通道被包装在各种燃料喷射系统中，以根据操作条件选择性地提供各种速率形状。 切换阀，即电磁操作的三通阀，可用于将燃料或正时流体流引导到速率整形传递通道中的任一个。 此外，反流限流阀形式的阻尼装置位于速率整形传递通道中以阻尼反射压力波，从而使其不利影响最小化。
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公开(公告)号：US06964270B2
公开(公告)日：2005-11-15
申请号：US10637361
申请日：2003-08-08
申请人： John M. Janssen , Bruce A. Watson , Charles R. Schenk , Josh S. Shao , Lester L. Peters , David L. Buchanan , Wayne A. Eckerle , Julius P. Perr
发明人： John M. Janssen , Bruce A. Watson , Charles R. Schenk , Josh S. Shao , Lester L. Peters , David L. Buchanan , Wayne A. Eckerle , Julius P. Perr
IPC分类号： F02M25/07
摘要： A preferred embodiment EGR valve permits exhaust gas to be induced into the intake line downstream of the compressor, while minimizing the need to reduce the size of the turbocharger. The preferred embodiment EGR valve exploits variations around the mean pressure in the EGR passage created by the engine cycle by selectively opening when the pressure in the EGR valve exceeds the pressure in the intake line. Thus, exhaust gas is recirculated even when the engine is running near torque peak. The preferred embodiment EGR valve also exploits the higher mean pressure in the exhaust line relative to the intake line at higher engine speeds by remaining open, in order to minimize the energy consumed in opening and closing the EGR valve.
摘要翻译： 优选的实施方案EGR阀允许排气被吸入到压缩机下游的进气管路中，同时最小化减小涡轮增压器尺寸的需要。 EGR阀利用在发动机循环所产生的EGR通路中的平均压力周围的变化，当EGR阀中的压力超过进气管线中的压力时，选择性地打开EGR阀。 因此，即使当发动机在扭矩峰值附近运行时，废气也被再循环。 在优选实施例中，EGR阀还通过保持打开来利用在较高发动机转速下相对于进气管线的排气管线中较高的平均压力，以便最小化打开和关闭EGR阀时消耗的能量。
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公开(公告)号：US5042445A
公开(公告)日：1991-08-27
申请号：US572212
申请日：1990-08-24
CPC分类号： F02M57/024 , F02D41/40 , F02D7/002 , F02D7/007 , F02M57/021 , F02B1/04 , F02B3/06 , F02D2200/0602 , F02D2250/31 , Y02T10/44
摘要： An electronically controlled fuel supply system is provided for employing a plurality of fuel injectors which maximize SAC pressures under both low speed and high speed operating conditions and are capable of sustaining SAC pressures in excess of 30,000 psi. The fuel supply system of the present invention includes a gear pump which supplies pressure-modulated fuel to a fueling channel and to a timing channel and from there to a plurality of injectors. Fuel pressure regulator means and timing fluid pressure regulator means are provided in the fueling and timing channel, respectively. An electronic control unit receives information relating to engine operating conditions from a plurality of sensors and actuates the fuel pressure regulator means and the timing fluid pressure regulator means to adjust the pressure as required for the specific engine operating conditions. The timing fluid is delivered to the injectors by the present system at a pressure sufficient to sustain a hydraulic link within the injector of the length necessary to maintain high SAC pressures during injection. Several embodiments of a fuel supply system which achieves these objectives are disclosed. A mounting integral with the cylinder head for an electronically controlled injector fuel supply system is also provided.
摘要翻译： 提供了一种电子控制的燃料供应系统，用于使用多个燃料喷射器，其在低速和高速运行条件下使SAC压力最大化，并且能够承受超过30,000psi的SAC压力。 本发明的燃料供给系统包括齿轮泵，其将加压调节燃料供给到加油通道和定时通道，并且从那里到多个喷射器。 燃料压力调节装置和定时流体压力调节装置分别设置在加油和定时通道中。 电子控制单元从多个传感器接收与发动机操作条件相关的信息，并致动燃料压力调节装置和定时流体压力调节装置，以根据特定的发动机运行条件来调节压力。 正时流体由本系统以足以维持注射器内的液压连杆在注射期间维持高SAC压力所需的长度的压力被输送到喷射器。 公开了实现这些目的的燃料供应系统的几个实施例。 还提供了与用于电子控制的喷射器燃料供应系统的气缸盖一体的安装。
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