公开(公告)号：US20110315118A1

公开(公告)日：2011-12-29

申请号：US12825487

申请日：2010-06-29

申请人： Dana R. Coldren ,  Eric L. Rogers ,  Fergal M. O'Shea ,  Lifeng Wang ,  Mandar A. Joshi

发明人： Dana R. Coldren ,  Eric L. Rogers ,  Fergal M. O'Shea ,  Lifeng Wang ,  Mandar A. Joshi

IPC分类号： F02M53/04 ,  B05B1/00

CPC分类号： F02M53/043 ,  F02M57/023 ,  F02M63/0017 ,  F02M63/007

摘要： Various fuel injection systems and fuel injectors are disclosed that provide varying cooling rates for fuel injectors connected in series to fuel supply and drain rail. The local cooling rate for each injector is manipulated to balance the heat flux or heat transfer across the injectors disposed along the rail. The cooling rates may be manipulated by varying sizes of openings or slots in the nozzle case, by varying annular spaces disposed between the nozzle case and the portion of the injector body that houses the actuator and solenoid assembly, and by varying the size of annular spaces disposed between the nozzle case and the cylinder head. Strategic placement of slots in the nozzle case that direct more flow at the portion of the injector body that houses the actuator and solenoid assembly may also be employed. As a result, the operating temperatures of fuel injectors connected in series to a fuel rail can be manipulated and moderated so the downstream injectors are not prone to overheating.

摘要翻译： 公开了各种燃料喷射系统和燃料喷射器，其为与燃料供应和排出轨道串联连接的燃料喷射器提供变化的冷却速率。 操作每个喷射器的局部冷却速率以平衡沿着轨道布置的喷射器之间的热通量或热传递。 可以通过改变设置在喷嘴壳体和容纳致动器和螺线管组件的喷射器主体的部分之间的环形空间以及通过改变环形空间的尺寸来改变喷嘴壳体中的开口或狭槽的大小来控制冷却速度 设置在喷嘴壳体和气缸盖之间。 喷嘴壳体中的槽的策略布置也可以用于在容纳致动器和螺线管组件的喷射器主体的部分处引导更多的流动。 结果，可以操纵和调节与燃料轨串联连接的燃料喷射器的操作温度，使得下游喷射器不容易过热。

公开(公告)号：US08434457B2

公开(公告)日：2013-05-07

申请号：US12825487

申请日：2010-06-29

申请人： Dana R. Coldren ,  Eric L. Rogers ,  Fergal M. O'Shea ,  Lifeng Wang ,  Mandar A. Joshi

发明人： Dana R. Coldren ,  Eric L. Rogers ,  Fergal M. O'Shea ,  Lifeng Wang ,  Mandar A. Joshi

IPC分类号： F02M61/14 ,  B05B1/24 ,  B05B15/00 ,  F01P1/06

CPC分类号： F02M53/043 ,  F02M57/023 ,  F02M63/0017 ,  F02M63/007

摘要： Various fuel injection systems and fuel injectors are disclosed that provide varying cooling rates for fuel injectors connected in series to fuel supply and drain rail. The local cooling rate for each injector is manipulated to balance the heat flux or heat transfer across the injectors disposed along the rail. The cooling rates may be manipulated by varying sizes of openings or slots in the nozzle case, by varying annular spaces disposed between the nozzle case and the portion of the injector body that houses the actuator and solenoid assembly, and by varying the size of annular spaces disposed between the nozzle case and the cylinder head. Strategic placement of slots in the nozzle case that direct more flow at the portion of the injector body that houses the actuator and solenoid assembly may also be employed. As a result, the operating temperatures of fuel injectors connected in series to a fuel rail can be manipulated and moderated so the downstream injectors are not prone to overheating.

摘要翻译： 公开了各种燃料喷射系统和燃料喷射器，其为与燃料供应和排出轨道串联连接的燃料喷射器提供变化的冷却速率。 操作每个喷射器的局部冷却速率以平衡沿着轨道布置的喷射器之间的热通量或热传递。 可以通过改变设置在喷嘴壳体和容纳致动器和螺线管组件的喷射器主体的部分之间的环形空间以及通过改变环形空间的尺寸来改变喷嘴壳体中的开口或狭槽的大小来控制冷却速率 设置在喷嘴壳体和气缸盖之间。 喷嘴壳体中的槽的策略布置也可以用于在容纳致动器和螺线管组件的喷射器主体的部分处引导更多的流动。 结果，可以操纵和调节与燃料轨串联连接的燃料喷射器的操作温度，使得下游喷射器不容易过热。

公开(公告)号：US08316826B2

公开(公告)日：2012-11-27

申请号：US12321065

申请日：2009-01-15

申请人： Dana R. Coldren ,  Fergal M. O'Shea

发明人： Dana R. Coldren ,  Fergal M. O'Shea

IPC分类号： F02M51/06

CPC分类号： F02M47/027 ,  F02M57/023 ,  F02M63/0021 ,  F02M63/0035

摘要： An electrically controlled fuel injector includes an armature that is movable between a first armature position and a second armature position inside an armature cavity containing fuel. By reducing the size of the armature cavity to a squish film drag gap, the armature experiences a squish film drag phenomenon when the armature moves from the first armature position to the second armature position reducing the armature travel speed but also reducing the settling time of the armature after an injection event. By reducing the armature travel speed, the armature experiences a reduction in magnitude of armature bounce allowing the armature to settle down quicker and produce minimum controllable injection events with shorter dwell times than predecessor fuel injectors, especially for close coupled post injection events.

摘要翻译： 电控燃料喷射器包括可在包含燃料的电枢腔内的第一衔铁位置和第二衔铁位置之间移动的电枢。 通过将衔铁腔的尺寸减小到挤压膜阻力间隙，当衔铁从第一衔铁位置移动到第二衔铁位置时，电枢经历挤压膜阻力现象，从而减小电枢移动速度，同时减少了电枢移动速度的稳定时间 注射事件后的衔铁。 通过减小电枢移动速度，电枢经历电枢跳动的幅度减小，允许电枢更快地沉降，并产生比先前的燃料喷射器更短的停留时间的最小可控喷射事件，特别是对于紧密耦合的后喷射事件。

公开(公告)号：US20100175670A1

公开(公告)日：2010-07-15

申请号：US12321065

申请日：2009-01-15

申请人： Dana R. Coldren ,  Fergal M. O'Shea

发明人： Dana R. Coldren ,  Fergal M. O'Shea

IPC分类号： F02M51/06 ,  F02M47/02

CPC分类号： F02M47/027 ,  F02M57/023 ,  F02M63/0021 ,  F02M63/0035

摘要： An electrically controlled fuel injector includes an armature that is movable between a first armature position and a second armature position inside an armature cavity containing fuel. By reducing the size of the armature cavity to a squish film drag gap, the armature experiences a squish film drag phenomenon when the armature moves from the first armature position to the second armature position reducing the armature travel speed but also reducing the settling time of the armature after an injection event. By reducing the armature travel speed; the armature experiences a reduction in magnitude of armature bounce allowing the armature to settle down quicker and produce minimum controllable injection events with shorter dwell times than predecessor fuel injectors, especially for close coupled post injection events.

摘要翻译： 电控燃料喷射器包括可在包含燃料的电枢腔内的第一衔铁位置和第二衔铁位置之间移动的电枢。 通过将衔铁腔的尺寸减小到挤压膜阻力间隙，当衔铁从第一衔铁位置移动到第二衔铁位置时，电枢经历挤压膜阻力现象，从而减小电枢移动速度，同时减少了电枢移动速度的稳定时间 注射事件后的衔铁。 通过减小电枢行进速度; 电枢经历电枢跳动的幅度减小，允许电枢更快地沉降，并产生比先前的燃料喷射器更短的停留时间的最小可控喷射事件，特别是对于紧密耦合的后喷射事件。