Electronically-controlled late cycle air injection to achieve simultaneous reduction of NOx and particulates emissions from a diesel engine
    1.
    发明授权
    Electronically-controlled late cycle air injection to achieve simultaneous reduction of NOx and particulates emissions from a diesel engine 有权
    电子控制的后期循环空气喷射,以实现柴油发动机的NOx和颗粒物排放的同时减少

    公开(公告)号:US06752131B2

    公开(公告)日:2004-06-22

    申请号:US10193555

    申请日:2002-07-11

    IPC分类号: F02M2300

    摘要: An electronically-controlled air injection system implemented in three different embodiments with respect to each cylinder. A first embodiment includes a T-adapter, an air solenoid, a fuel injector, and a control unit. The T-adapter receives pressurized fuel and pressurized air from an air solenoid, and outputs these to the fuel injector. The air solenoid controls the flow of air to the fuel injector via the control unit. The second embodiment includes a modified fuel injector, an air solenoid, and a control unit. The fuel injector is modified by forming therein an air passage and a communicating sac, wherein the sac communicates with the fuel valve. Compressed air is supplied through an air solenoid to the air passage. The third embodiment includes a modified cylinder head, an air solenoid, and a control unit. Compressed air is supplied through an air solenoid to at least one combustion chamber cylinder port in the cylinder head.

    摘要翻译: 一种电子控制的空气喷射系统,其在相对于每个气缸的三个不同实施例中实现。 第一实施例包括T型适配器,空气螺线管,燃料喷射器和控制单元。 T型适配器从空气螺线管接收加压燃料和加压空气,并将其输出到燃料喷射器。 空气螺线管通过控制单元控制到燃油喷射器的空气流。 第二实施例包括改进的燃料喷射器,空气螺线管和控制单元。 通过在其中形成空气通道和连通囊来改变燃料喷射器,其中囊与燃料阀连通。 压缩空气通过空气螺线管供给到空气通道。 第三实施例包括改进的气缸盖,空气螺线管和控制单元。 压缩空气通过空气螺线管供给到气缸盖中的至少一个燃烧室气缸端口。

    Variable injection rate high pressure fuel pump
    2.
    发明授权
    Variable injection rate high pressure fuel pump 有权
    可变喷射率高压燃油泵

    公开(公告)号:US06726459B1

    公开(公告)日:2004-04-27

    申请号:US10289892

    申请日:2002-11-07

    IPC分类号: F04B1900

    摘要: A high pressure fuel pump having a variable fuel injection rate, including a pump body, a pump cylinder formed in the pump body and a piston reciprocable within the pump cylinder, which defines a pressurization chamber. The pump piston has a reduced diameter portion which provides a primary piston. A piston annulus is slidably mounted thereon and provides a secondary piston. An annular actuation chamber adjoins the secondary piston opposite the pressurization chamber. An actuation passage is provided between a return fuel drain and the actuation chamber, which is selectively open or closed passively by pump piston movement and/or dynamically by operation of an actuation solenoid valve. If the actuation chamber passage is open, then during the pressurization stroke the secondary piston will remain stationary relative to the pump body, but if it is closed then the secondary piston must stroke in unison with the primary piston.

    摘要翻译: 具有可变燃料喷射速率的高压燃料泵,包括泵体,形成在泵体中的泵筒和在泵缸内往复运动的活塞,其限定加压室。 泵活塞具有减小的直径部分,其提供主活塞。 活塞环可滑动地安装在其上并提供第二活塞。 环形致动室邻接与次级活塞相对的加压室。 致动通道设置在返回燃料排出口和致动室之间,该致动室通过泵活塞运动和/或通过致动电磁阀的动作来动态选择性地打开或关闭。 如果致动室通道打开,则在加压冲程期间,次级活塞将相对于泵体保持静止,但是如果其闭合,则辅助活塞必须与主活塞一致地行进。

    Anti-bounce needle valve for a fuel injector
    3.
    发明授权
    Anti-bounce needle valve for a fuel injector 有权
    用于燃油喷射器的反弹针阀

    公开(公告)号:US06874703B2

    公开(公告)日:2005-04-05

    申请号:US10166885

    申请日:2002-06-11

    摘要: An anti-bounce needle valve for a fuel injector, wherein the needle inherently incorporates the anti-bounce feature. The needle has a conventionally configured exterior for interfacing with a valve seat and a tip body of a conventional fuel injector. The needle is characterized by a needle body having an interior cavity which is filled with small diameter shot, preferably generally spherical tungsten carbide shot. In operation, when the needle impacts upon the valve seat at the conclusion of a fuel injection process, the shot causes the needle collision with the valve seat to be inelastic, thereby eliminating needle bounce.

    摘要翻译: 一种用于燃料喷射器的防反弹针阀,其中针头固有地结合防反弹特征。 针具有常规配置的外部,用于与阀座和常规燃料喷射器的尖端体接口。 针的特征在于具有内腔的针体,其内部填充有小直径的丸粒,优选大致为球形的碳化钨射击。 在操作中,当在燃料喷射过程结束时针头撞击阀座时,镜头导致与阀座的针碰撞不弹性,从而消除针反弹。