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公开(公告)号：EP0723076A2
公开(公告)日：1996-07-24
申请号：EP96300271.2
申请日：1996-01-15
发明人： Yen, Benjamin M. , Peters, Lester L. , Perr, Julius P. , Ghuman, Amarjit S. , Ashwill, Dennis M.
CPC分类号： F02M45/12 , F02M45/10 , F02M61/042 , F02M61/10 , F02M2200/40
摘要： An injection rate shaping nozzle assembly (52) for a fuel injector is provided which includes a closed nozzle valve element (66) and a rate shaping control device (82) 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 (88) integrally formed in the nozzle valve element (66). The rate shaping control means (82) may include a spill valve (86) 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 (88) may communicate with the injector nozzle cavity (58) between injection events or alternatively may be blocked to prevent spill flow between injection events. The rate shaping control device (82) may include a spill accelerating device in the form of a spill chamber formed in the nozzle valve element (66) for creating a rapid increase in the spill flow rate.
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公开(公告)号：EP0723076A3
公开(公告)日：1997-10-08
申请号：EP96300271.2
申请日：1996-01-15
发明人： Yen, Benjamin M. , Peters, Lester L. , Perr, Julius P. , Ghuman, Amarjit S. , Ashwill, Dennis M.
CPC分类号： F02M45/12 , F02M45/10 , F02M61/042 , F02M61/10 , F02M2200/40
摘要： An injection rate shaping nozzle assembly (52) for a fuel injector is provided which includes a closed nozzle valve element (66) and a rate shaping control device (82) 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 (88) integrally formed in the nozzle valve element (66). The rate shaping control means (82) may include a spill valve (86) 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 (88) may communicate with the injector nozzle cavity (58) between injection events or alternatively may be blocked to prevent spill flow between injection events. The rate shaping control device (82) may include a spill accelerating device in the form of a spill chamber formed in the nozzle valve element (66) for creating a rapid increase in the spill flow rate.
摘要翻译： 提供了一种用于燃料喷射器的注射速率成形喷嘴组件（52），其包括封闭的喷嘴阀元件（66）和速率整形控制装置（82），该装置包括用于将要注入的燃料的一部分溢出的喷射泄漏电路 产生喷射到燃烧室中的燃料的流量的预定时间变化的变化。 泄漏回路包括一体地形成在喷嘴阀元件（66）中的溢流通道（88）。 速率整形控制装置（82）可以包括溢流阀（86），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（88）可以在喷射事件之间与喷射器喷嘴腔（58）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（82）可以包括形成在喷嘴阀元件（66）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。
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