公开(公告)号：US09541046B2

公开(公告)日：2017-01-10

申请号：US14763029

申请日：2014-01-10

申请人： Hitachi Automotive Systems, Ltd.

发明人： Yoshihito Yasukawa ,  Hideharu Ehara ,  Tohru Ishikawa ,  Motoyuki Abe ,  Ryo Kusakabe

IPC分类号： B05B1/30 ,  F02M51/06 ,  F02M61/04 ,  F02M45/00 ,  F02M45/08 ,  F02D41/20

CPC分类号： F02M51/0657 ,  F02D41/20 ,  F02M45/00 ,  F02M45/08 ,  F02M51/061 ,  F02M51/0625 ,  F02M51/066 ,  F02M61/04 ,  F02M61/10 ,  F02M61/20 ,  F02M2200/08

摘要： A fuel injection valve having a variable stroke mechanism is constructed. A valve body provided to be slidable; a first movable element for cooperating with the valve body; an inner fixed iron core provided at a position to oppose a second movable element; an outer fixed iron core; and a coil are included. A lift amount of the second movable element is set larger than a lift amount of the first movable element, and a portion of the second movable element is projected into the first movable element. In this way, large and small lifts are constituted by using a difference between magnetic attractive forces that are generated in the first movable element and the second movable element by a current supplied to the coil.

摘要翻译： 具有可变冲程机构的燃料喷射阀构成。 设置为可滑动的阀体; 用于与阀体配合的第一可移动元件; 内固定铁芯，设置在与第二可移动元件相对的位置; 外固定铁芯; 并包括线圈。 第二可移动元件的提升量被设定为大于第一可移动元件的提升量，并且第二可移动元件的一部分突出到第一可移动元件中。 以这种方式，通过使用通过提供给线圈的电流在第一可移动元件和第二可移动元件中产生的吸引力之间的差异来构成大而小的电梯。

公开(公告)号：US09347410B2

公开(公告)日：2016-05-24

申请号：US13913274

申请日：2013-06-07

申请人： Mazda Motor Corporation

发明人： Masami Nishida ,  Yuki Shimogawa

IPC分类号： F02D1/00 ,  F02M51/06 ,  B05B1/30 ,  F02M45/08 ,  F02D41/30 ,  F02M61/18 ,  F02D41/20

CPC分类号： F02M51/06 ,  F02D41/20 ,  F02D41/3029 ,  F02D2041/2079 ,  F02M45/08 ,  F02M51/0617 ,  F02M61/1833

摘要： A fuel injection device of a direct injection engine is provided. The device includes an engine body, a fuel injection valve, and a controller for controlling a fuel injection by the fuel injection valve. The fuel injection valve has a nozzle hole, a valve body for opening and closing the nozzle hole, and first and solenoid coils for stroking the valve body by first and second stroke amounts, respectively. The controller performs the fuel injection by the first solenoid coil in an intake stroke period within an engine operating range with an engine load below a predetermined load. The controller performs the fuel injection with a fuel pressure of 40 MPa or above by the second solenoid coil in a period between a compression stroke late stage and an expansion stroke early stage within a low-engine-speed range with an engine speed below a predetermined speed within a high-engine-load range.

摘要翻译： 提供了直喷式发动机的燃料喷射装置。 该装置包括发动机主体，燃料喷射阀和用于控制燃料喷射阀的燃料喷射的控制器。 燃料喷射阀具有喷嘴孔，用于打开和关闭喷嘴孔的阀体，以及分别通过第一和第二冲程量对阀体进行冲程的第一和电磁线圈。 控制器在发动机工作范围内的发动机工作范围内，在发动机负荷低于预定负荷的情况下，通过第一螺线管线圈进行燃料喷射。 控制器在发动机转速低于预定值的低发动机转速范围内，在压缩冲程后期阶段与膨胀冲程早期阶段之间，通过第二螺线管线圈以40MPa以上的燃料压力进行燃料喷射。 在高发动机负载范围内的速度。

公开(公告)号：US09140223B2

公开(公告)日：2015-09-22

申请号：US12624200

申请日：2009-11-23

申请人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Chiara Altamura ,  Domenico Lepore

发明人： Mario Ricco ,  Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Chiara Altamura ,  Domenico Lepore

IPC分类号： F02M45/08 ,  F02M47/02 ,  F02M63/00 ,  F02D41/20 ,  F02D41/40

CPC分类号： F02M47/027 ,  F02D41/20 ,  F02D41/403 ,  F02M45/08 ,  F02M63/0024 ,  F02M63/004 ,  F02M63/007 ,  F02M63/0075 ,  F02M63/008 ,  F02M2200/306 ,  F02M2547/003

摘要： The fuel injection system comprises a fuel injector controlled by commands of a control unit. The fuel injector comprises a metering servo valve having a control chamber provided with an outlet passage that is opened/closed by an open/close element that is axially movable. The open/close element is carried by an axial guide element that is separate from an armature of an electromagnet. The open/close element is held in the closing position by a spring acting through an intermediate body. In some instances, the strokes of the open/close element and of the armature are chosen so as to eliminate, upon closing of the servo valve, the rebounds of the open/close element subsequent to the first rebound. The control unit controls a fuel injection comprising a pilot fuel injection and a main fuel injection, via two distinct electrical commands, which are spaced apart by a dwell time such as to occur in an area of reduced variation of the amount of injected fuel. Therefore, the stability of operation of the fuel injection system increases as the dwell time varies.

摘要翻译： 燃料喷射系统包括由控制单元的命令控制的燃料喷射器。 燃料喷射器包括计量伺服阀，其具有控制室，该控制室设置有通过可轴向移动的打开/关闭元件打开/关闭的出口通道。 开/关元件由与电磁体的电枢分离的轴向引导元件承载。 打开/关闭元件通过作用在中间体上的弹簧保持在关闭位置。 在某些情况下，选择打开/关闭元件和电枢的行程，以便在关闭伺服阀时消除在第一次回弹之后的打开/关闭元件的反弹。 控制单元经由两个不同的电气指令来控制包括先导燃料喷射和主燃料喷射的燃料喷射，其间隔开停留时间，以便发生在喷射燃料量的变化量减小的区域中。 因此，燃料喷射系统的运行稳定性随着停留时间的变化而增加。

公开(公告)号：US09068544B2

公开(公告)日：2015-06-30

申请号：US13805629

申请日：2011-07-07

申请人： Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Marcello Gargano

发明人： Sergio Stucchi ,  Raffaele Ricco ,  Onofrio De Michele ,  Marcello Gargano

IPC分类号： F02D41/20 ,  F02M69/04 ,  F02D41/40 ,  F02M45/08 ,  F02M47/02 ,  F02M63/00 ,  F02D41/38

CPC分类号： F02M69/04 ,  F02D41/20 ,  F02D41/2096 ,  F02D41/402 ,  F02D2041/389 ,  F02M45/08 ,  F02M47/027 ,  F02M63/0015 ,  F02M63/0078 ,  Y02T10/44

摘要： A fuel-injection system for an internal-combustion engine has at least one fuel injector with a fuel-metering servo valve provided with an open/close element, which is movable in response to the action of an electric actuator; and an electronic control unit which issues to the electric actuator two electrical commands, one for carrying out a pilot injection and one for carrying out a main injection; the two electrical commands being separated by an electrical dwell time such that the main injection starts, without solution of continuity with the pilot injection, when an open/close needle for carrying out fuel injections into a cylinder of the internal-combustion engine remains at a lift value in which the fuel flow rate is negligible; in particular, the second electrical command is issued during a rebound of the open/close element on the valve seat.

摘要翻译： 用于内燃机的燃料喷射系统具有至少一个具有燃料计量伺服阀的燃料喷射器，所述燃料计量伺服阀具有打开/关闭元件，所述打开/关闭元件可响应于电致动器的动作而移动; 以及电子控制单元，其向电动致动器发出两个电气指令，一个用于执行引燃喷射，一个用于执行主喷射; 两个电气指令通过电停留时间分离，使得当用于执行燃料喷射到内燃机的气缸中的打开/关闭针头保持在 燃油流量可忽略不计的升程值; 特别地，在阀座上的打开/关闭元件的回弹期间发出第二电命令。

公开(公告)号：US20140000568A1

公开(公告)日：2014-01-02

申请号：US13913274

申请日：2013-06-07

申请人： Mazda Motor Corporation

发明人： Masami Nishida ,  Yuki Shimogawa

IPC分类号： F02M51/06

CPC分类号： F02M51/06 ,  F02D41/20 ,  F02D41/3029 ,  F02D2041/2079 ,  F02M45/08 ,  F02M51/0617 ,  F02M61/1833

摘要： A fuel injection device of a direct injection engine is provided. The device includes an engine body, a fuel injection valve, and a controller for controlling a fuel injection by the fuel injection valve. The fuel injection valve has a nozzle hole, a valve body for opening and closing the nozzle hole, and first and solenoid coils for stroking the valve body by first and second stroke amounts, respectively. The controller performs the fuel injection by the first solenoid coil in an intake stroke period within an engine operating range with an engine load below a predetermined load. The controller performs the fuel injection with a fuel pressure of 40 MPa or above by the second solenoid coil in a period between a compression stroke late stage and an expansion stroke early stage within a low-engine-speed range with an engine speed below a predetermined speed within a high-engine-load range.

摘要翻译： 提供直喷式发动机的燃料喷射装置。 该装置包括发动机主体，燃料喷射阀和用于控制燃料喷射阀的燃料喷射的控制器。 燃料喷射阀具有喷嘴孔，用于打开和关闭喷嘴孔的阀体，以及分别通过第一和第二冲程量对阀体进行冲程的第一和电磁线圈。 控制器在发动机工作范围内的发动机工作范围内，在发动机负荷低于预定负荷的情况下，通过第一螺线管线圈进行燃料喷射。 控制器在发动机转速低于预定值的低发动机转速范围内，在压缩冲程后期阶段与膨胀冲程早期阶段之间，通过第二螺线管线圈以40MPa以上的燃料压力进行燃料喷射。 在高发动机负载范围内的速度。

公开(公告)号：US20130068200A1

公开(公告)日：2013-03-21

申请号：US13233576

申请日：2011-09-15

申请人： Paul Reynolds ,  Robert Andrew Banks

发明人： Paul Reynolds ,  Robert Andrew Banks

IPC分类号： F02M51/00 ,  F16K31/02

CPC分类号： F02M51/0603 ,  F02D41/2096 ,  F02M45/08 ,  F02M45/12 ,  F02M61/166 ,  F02M61/188 ,  F02M2200/70 ,  F02M2200/9015 ,  F16K1/34 ,  F16K31/007

摘要： An injector comprising one or more piezoelectric driving stacks wherein a flow control member of the injector is driven directly by the one or more piezoelectric stacks without additional amplification means or interposing elements while a flow area of the nozzle is variably adjustable to deliver controlled flow rates in a desired flow profile to improve engine performance and reduce emissions. The injector is configured to support required flow rates with minimal linear movement of the flow control member. The injector and drive electronics are configured to deliver higher frequency operation and response with increased operational stability due to minimal response lag.

公开(公告)号：US20120000990A1

公开(公告)日：2012-01-05

申请号：US13168876

申请日：2011-06-24

申请人： Paul Reynolds ,  Robert Andrew Banks

发明人： Paul Reynolds ,  Robert Andrew Banks

IPC分类号： F02M63/00

CPC分类号： F02M51/0603 ,  F02D41/2096 ,  F02M45/08 ,  F02M45/12 ,  F02M61/166 ,  F02M61/168 ,  F02M61/18 ,  F02M61/1873 ,  F02M61/188 ,  F02M61/1886 ,  F02M2200/70 ,  F02M2200/8076 ,  F02M2200/9015

摘要： A fuel injector apparatus comprising a piezoelectric driving stack and injector assembly wherein a flow control member of the fuel injector apparatus is driven directly by the piezoelectric stack without additional amplification means or interposing elements while the flow area of the nozzle portion is variably adjustable to deliver controlled flow rates in a desired flow profile to improve engine performance and reduce emissions. The injector configuration is adapted to support required flow rates with minimal linear movement of the flow control member.

摘要翻译： 一种燃料喷射器装置，包括压电驱动叠层和喷射器组件，其中燃料喷射器装置的流量控制构件直接由压电叠层驱动，而无需额外的放大装置或插入元件，同时喷嘴部分的流动面积可变地可调节， 所需流量分布中的流速以改善发动机性能并减少排放。 喷射器配置适于以最小的流动控制构件的线性移动来支撑所需流量。

公开(公告)号：US20100187329A1

公开(公告)日：2010-07-29

申请号：US12666312

申请日：2008-06-25

申请人： Andre Agneray ,  Nadim Malek ,  Laurent Levin ,  Marc Pariente

发明人： Andre Agneray ,  Nadim Malek ,  Laurent Levin ,  Marc Pariente

IPC分类号： B05B1/08

CPC分类号： F02M45/10 ,  F02M45/08 ,  F02M61/08 ,  F02M69/041 ,  F02M2200/21

摘要： A fluid injection device having a main injection axis and including at least: a housing; an actuator axially mounted in the housing and including a stack with two axially opposed front faces and including at least one electro-active portion with an electro-active material; and a pre-stressing mechanism adapted for at least partially pre-stressing the stack. The pre-stressing mechanism includes at least a tightening clamp outside the stack and provided between the stack and the housing.

摘要翻译： 一种具有主注射轴线并且至少包括：壳体的流体注射装置; 轴向安装在壳体中并包括具有两个轴向相对的前表面并且包括至少一个具有电活性材料的电活性部分的叠层的致动器; 以及适于至少部分预应力堆叠的预应力机构。 预应力机构至少包括在堆叠之外的紧固夹具，并且设置在堆和壳体之间。

公开(公告)号：US20090314860A1

公开(公告)日：2009-12-24

申请号：US12214623

申请日：2008-06-20

申请人： Lifeng Wang ,  Koti R. Padarthy ,  Gengxun K. Gurley ,  Kyle E. Enzinger

发明人： Lifeng Wang ,  Koti R. Padarthy ,  Gengxun K. Gurley ,  Kyle E. Enzinger

IPC分类号： B05B1/30

CPC分类号： F02M47/027 ,  F02M45/08

摘要： A mechanically actuated electronically controlled fuel injector (MEUI) includes a first electrical actuator that controls the position of a spill valve, and a second electrical actuator to control pressure on a closing hydraulic surface associated with a directly operated nozzle check valve. The fuel injector is actuated via rotation of a cam to move a plunger to displace fuel from a fuel pumping chamber either to a spill passage, or at high pressure out of a nozzle outlet of the fuel injector for an injection event. The minimum controllable fuel injection quantity, especially as it relates to small closely coupled post injections following a large main injection, is accomplished by the inclusion of a Z orifice passage that maintains a fluid connection between a needle control chamber and the nozzle supply passage. The inclusion of the Z orifice passage slows the rate at which pressure drops in the needle control chamber to commence an injection event, but also hastens the rate at which pressure builds in the needle control chamber to end an injection event. The result is a smaller post injection quantity and, if desired, a longer, shorter or same dwell time between injection events.

摘要翻译： 机械致动的电控燃料喷射器（MEUI）包括控制溢流阀的位置的第一电致动器和用于控制与直接操作的喷嘴止回阀相关联的关闭液压表面上的压力的第二电致动器。 燃料喷射器通过凸轮的旋转被致动以移动柱塞以将燃料从燃料泵送室移动到溢流通道，或者在高压下从用于喷射事件的燃料喷射器的喷嘴出口移出。 最小可控燃料喷射量，特别是与大型主喷射之后的小的紧密连接的后喷射相关的是通过包括保持针控制室和喷嘴供应通道之间的流体连接的Z孔通道来实现的。 Z孔通道的包含减慢了针控制室中的压力下降的速度，以开始注射事件，而且加快了针控制室中的压力建立以终止注射事件的速率。 结果是较小的后喷射量，并且如果需要，喷射事件之间的更长，更短或相同的停留时间。

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）。