公开(公告)号：US20080208437A1

公开(公告)日：2008-08-28

申请号：US12019169

申请日：2008-01-24

申请人： Hiroyuki NATSUI ,  Kunihiko Suzuki ,  Kenji Tuchita ,  Sumie Tuchita

发明人： Hiroyuki NATSUI ,  Kunihiko Suzuki ,  Kenji Tuchita ,  Sumie Tuchita

IPC分类号： F02D41/04 ,  F02M51/06

CPC分类号： F02D41/20 ,  F02M45/08 ,  F02M51/0614

摘要： There was a problem that various fuel spray shapes cannot be obtained according to operating conditions of a direct injection engine. There is provided a giant magnetostrictive element type injector which controls the change rate (rising slope) or peak value of a supply current applied to a solenoid for magnetic field generation which displaces a giant magnetostrictive element according to requests of an engine. The steeper the rising slope of the supply current to the solenoid, the higher becomes a lifting speed of a plunger, the higher becomes the initial speed of a fuel spray, and the longer the penetration can be. The gentler the rising slope thereof, the lower becomes the lifting speed of the plunger, the lower becomes the initial speed of the fuel spray, and the shorter the penetration can be. Further, the larger the peak value of the supply current, the larger the lift amount of the plunger can be and the larger becomes the fuel flow rate, allowing an increase in fuel spray density (resulting in a fuel spray that is not easily crushed). The smaller the peak value of the supply current, the smaller becomes the fuel flow rate, allowing a decrease in fuel spray density (resulting in a fuel spray that is easily crushed).

摘要翻译： 存在根据直接喷射发动机的操作条件不能获得各种燃料喷射形状的问题。 提供了一种巨磁致伸缩元件型注射器，其控制施加到用于磁场产生的螺线管的电源电流的变化率（上升斜率）或峰值，其根据发动机的要求移位巨磁致伸缩元件。 电磁线圈的供电电流的上升斜率越高，柱塞的提升速度越高，燃料喷射的初始速度越高，穿透能力越长。 其升高的坡度越平缓，柱塞的提升速度越低，燃料喷射的初始速度越低，穿透能力越短。 此外，供给电流的峰值越大，柱塞的提升量越大，燃料流量越大，燃料喷雾密度的增加（导致不容易被粉碎的燃料喷雾） 。 供电电流峰值越小，燃料流量越小，燃料喷射密度降低（导致容易粉碎的燃料喷雾）。

公开(公告)号：US20080196691A1

公开(公告)日：2008-08-21

申请号：US11960144

申请日：2007-12-19

申请人： Yusuke KIHARA ,  Takuya Shiraishi ,  Kenji Tuchita ,  Sumie Tuchita ,  Hiroyuki Natsui ,  Hiroshi Fujii ,  Atsushi Sekine

发明人： Yusuke KIHARA ,  Takuya Shiraishi ,  Kenji Tuchita ,  Sumie Tuchita ,  Hiroyuki Natsui ,  Hiroshi Fujii ,  Atsushi Sekine

IPC分类号： F02B3/00

CPC分类号： F02M61/1806 ,  F01N3/10 ,  F01N11/00 ,  F02B23/104 ,  F02B23/105 ,  F02B2023/103 ,  F02D41/064 ,  F02D41/3029 ,  F02M61/1826 ,  F02M61/1853 ,  F02M63/0225 ,  Y02T10/125

摘要： It is necessary to attain the combustion stability when performing ignition retarding in order to reduce exhaust gas and raise the exhaust gas temperature under a cold start condition, as well as soot reduction under a fully open throttle valve condition.An injector according to the present invention comprises: a plurality of fuel passages having an axis line inclined with respect to a valve operation axis line at a nozzle end; wherein inclined axis lines of at least three of the fuel passages have a spreading angle, none of them intersecting with each other, and three injection points are formed in a plane perpendicular to a valve operation axis line to form a triangle; and wherein at least one center-oriented fuel passage having an injection point around the center of the triangle is provided.

摘要翻译： 为了减少排气，提高冷启动条件下的排气温度，在完全打开的节流阀状态下进行烟灰还原，需要进行点火延迟时的燃烧稳定性。 根据本发明的喷射器包括：多个燃料通道，其具有在喷嘴端处相对于阀操作轴线倾斜的轴线; 其中至少三个燃料通道的倾斜轴线具有扩展角，它们彼此不相交，并且在垂直于阀操作轴线的平面中形成三个喷射点以形成三角形; 并且其中提供了具有围绕三角形中心的注入点的至少一个中心取向燃料通道。