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。

公开(公告)号：US5769319A

公开(公告)日：1998-06-23

申请号：US814998

申请日：1997-03-14

申请人： B. M. Yen ,  Lester L. Peters ,  J. P. Perr ,  A. S. Ghuman ,  Dennis Ashwill

发明人： B. M. Yen ,  Lester L. Peters ,  J. P. Perr ,  A. S. Ghuman ,  Dennis Ashwill

IPC分类号： F02M45/08 ,  F02M45/10 ,  F02M45/12 ,  F02M61/04 ,  F02M61/10 ,  F02M63/00 ,  F02M47/02

CPC分类号： F02M45/12 ,  F02M45/10 ,  F02M61/042 ,  F02M61/10 ,  F02M2200/40

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 may include a spill valve for controlling the spill flow through the spill circuit to create a low injection flow rate followed by a high injection flow rate. The spill passage may communicate with the injector nozzle cavity between injection events or alternatively may be blocked to prevent spill flow between injection events. The rate shaping control device may include a spill accelerating device in the form of a spill chamber formed in the nozzle valve element for creating a rapid increase in the spill flow rate. In another embodiment, the rate shaping device may include a throttling passage integrally formed in the nozzle valve element to vary the rate at which fuel pressure in the nozzle cavity increases so as to vary the flow rate through the injector orifices.

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。 速率成形控制可以包括溢流阀，用于控制通过溢流回路的溢流，以产生低喷射流量，随后是高喷射流量。 溢出通道可以在注射事件之间与喷射器喷嘴腔连通，或者可以被阻塞以防止喷射事件之间的溢出流动。 速率成形控制装置可以包括形成在喷嘴阀元件中的溢出室形式的溢出加速装置，用于产生溢出流量的快速增加。 在另一个实施例中，速率整形装置可以包括一个形成在喷嘴阀元件中的节流通道，以改变喷嘴腔中的燃料压力增加的速率，从而改变通过喷射器孔的流量。

公开(公告)号：US5647536A

公开(公告)日：1997-07-15

申请号：US376417

申请日：1995-01-23

申请人： B. M. Yen ,  Lester L. Peters ,  J. P. Perr ,  A. S. Ghuman ,  Dennis Ashwill

发明人： B. M. Yen ,  Lester L. Peters ,  J. P. Perr ,  A. S. Ghuman ,  Dennis Ashwill

IPC分类号： F02M45/08 ,  F02M45/10 ,  F02M45/12 ,  F02M61/04 ,  F02M61/10 ,  F02M63/00 ,  F02M47/02

CPC分类号： F02M45/12 ,  F02M45/10 ,  F02M61/042 ,  F02M61/10 ,  F02M2200/40

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 may include a spill valve for controlling the spill flow through the spill circuit to create a low injection flow rate followed by a high injection flow rate. The spill passage may communicate with the injector nozzle cavity between injection events or alternatively may be blocked to prevent spill flow between injection events. The rate shaping control device may include a spill accelerating device in the form of a spill chamber formed in the nozzle valve element for creating a rapid increase in the spill flow rate. In another embodiment, the rate shaping device may include a throttling passage integrally formed in the nozzle valve element to vary the rate at which fuel pressure in the nozzle cavity increases so as to vary the flow rate through the injector orifices.

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。 速率成形控制可以包括溢流阀，用于控制通过溢流回路的溢流，以产生低喷射流量，随后是高喷射流量。 溢出通道可以在注射事件之间与喷射器喷嘴腔连通，或者可以被阻塞以防止喷射事件之间的溢出流动。 速率成形控制装置可以包括形成在喷嘴阀元件中的溢出室形式的溢出加速装置，用于产生溢出流量的快速增加。 在另一个实施例中，速率整形装置可以包括一个形成在喷嘴阀元件中的节流通道，以改变喷嘴腔中的燃料压力增加的速率，从而改变通过喷射器孔的流量。