公开(公告)号：US06729554B2

公开(公告)日：2004-05-04

申请号：US09969659

申请日：2001-10-04

申请人： Ryo Katsura ,  Kenji Funai ,  Toshihiko Igashira ,  Satoshi Hayashi

发明人： Ryo Katsura ,  Kenji Funai ,  Toshihiko Igashira ,  Satoshi Hayashi

IPC分类号： F02M4702

CPC分类号： F02M63/0026 ,  F02M47/027 ,  F02M55/002 ,  F02M61/14 ,  F02M2200/304 ,  F02M2200/315 ,  F02M2200/706

摘要： A fuel injector is provided which is designed to suppress unwanted vibrations of a nozzle needle-actuating piston, thereby avoiding the injection of an excess quantity of fuel. The fuel injector comprises an actuator and a displacement amplifying chamber filled with fluid to which a large-diameter piston and a small-diameter piston working as the nozzle needle-actuating piston are exposed. The displacement amplifying chamber works to amplify and transmit displacement of the large-diameter piston by the actuator to the small-diameter piston. The fuel injector also includes a stopper which restricts movement of the small-diameter piston toward the displacement amplifying chamber to a given range, thereby suppressing the unwanted vibrations of the small-diameter piston.

摘要翻译： 提供了一种燃料喷射器，其设计成可以抑制喷嘴针致动活塞的不期望的振动，从而避免喷射过量的燃料。 燃料喷射器包括致动器和填充有流体的位移放大室，大流量活塞和作为喷嘴针致动活塞的小直径活塞暴露在该流体中。 位移放大室用于将大直径活塞的位移放大并传递给小直径活塞。 燃料喷射器还包括限制小容积活塞向位移放大室移动至给定范围的止动件，从而抑制小直径活塞的不希望的振动。

公开(公告)号：US06874475B2

公开(公告)日：2005-04-05

申请号：US09887562

申请日：2001-06-25

申请人： Ryo Katsura ,  Kenji Funai ,  Yutaka Yamada ,  Ken Mizutani

发明人： Ryo Katsura ,  Kenji Funai ,  Yutaka Yamada ,  Ken Mizutani

IPC分类号： F02M47/00 ,  F02M47/02 ,  F02M51/06 ,  F02M59/46 ,  F02M63/00 ,  F02M37/04

CPC分类号： F02M47/027 ,  F02M63/0026

摘要： A fuel injector for an internal combustion engine is provided. The fuel injector has a simple structure so that it is easy to install and remove a piezoelectric valve actuator in and from the fuel injector, and to adjust fuel injection characteristics finely which allows the overall size of the fuel injector to be decreased. The fuel injector includes a housing to be installed in the engine and a structural element serving to install the piezoelectric valve actuator in the housing to be detachable easily. The piezoelectric valve actuator is retained in an actuator casing fitted in the housing so that it can expand or contract to move a needle valve. The actuator casing has an extensible portion in itself or is coupled to a bellows in alignment for enabling the piezoelectric valve actuator to expand, thereby allowing the size of the actuator casing to be minimized.

摘要翻译： 提供一种用于内燃机的燃料喷射器。 燃料喷射器具有简单的结构，使得容易将燃料喷射器中的压电阀致动器安装和移除，并且可以精细地调节燃料喷射特性，从而允许燃料喷射器的总体尺寸减小。 燃料喷射器包括安装在发动机中的壳体和用于将压电阀致动器安装在壳体中以便容易拆卸的结构元件。 压电阀致动器保持在安装在壳体中的致动器壳体中，使得其可以膨胀或收缩以移动针阀。 致动器壳体本身具有可伸长部分，或者连接到对准的波纹管，以使压电阀致动器能够膨胀，从而允许致动器壳体的尺寸最小化。

公开(公告)号：US08050845B2

公开(公告)日：2011-11-01

申请号：US12419780

申请日：2009-04-07

申请人： Ryo Katsura

发明人： Ryo Katsura

IPC分类号： F02D41/30 ,  F16K31/06 ,  F02M51/00

CPC分类号： F02D41/3836 ,  F02D41/221 ,  F02D2041/224 ,  F02M59/34 ,  F02M59/366 ,  F02M59/462 ,  F02M59/466

摘要： An ECU estimates a variation amount of fuel which is actually suctioned by a fuel pump based on a fuel pressure in a common rail. Even though the fuel pressure in the common rail deviates from a target fuel pressure, when the estimated variation amount of fuel is substantially zero, an energization quantity to a solenoid of a flow control valve is compulsorily reduced.

摘要翻译： ECU基于共轨中的燃料压力来估计由燃料泵实际吸引的燃料的变化量。 即使共轨中的燃料压力偏离目标燃料压力，当估计的燃料变化量基本上为零时，强制地减少对流量控制阀的螺线管的通电量。