Structure of fuel injector adjustable in fuel jet characteristic

    公开(公告)号:US06409094B1

    公开(公告)日:2002-06-25

    申请号:US09801817

    申请日:2001-03-09

    IPC分类号: F02D106

    摘要: A fuel injector is provided which has an improved structure capable of adjusting fuel jet characteristics such as the quantity of fuel to be injected to an engine and a fuel injection time lag after the fuel injector is assembled. The fuel injector includes an air gap adjusting screw and a spring pressure adjusting screw. The air gap adjusting screw serves to change an air gap between a stator and an armature of a solenoid valve to adjust the quantity of fuel to a target one. The spring pressure adjusting screw serves to change a spring pressure urging a valve in a spray hole-closing direction to regulate a spray hole open duration, thereby adjusting the fuel injection time lag or the quantity of fuel.

    Fuel injection device inhibiting abrasion
    5.
    发明申请
    Fuel injection device inhibiting abrasion 有权
    燃油喷射装置抑制磨损

    公开(公告)号:US20050161536A1

    公开(公告)日:2005-07-28

    申请号:US11038226

    申请日:2005-01-21

    摘要: A fuel injection device has a nozzle body formed with an injection hole for injecting fuel and a nozzle needle reciprocating in the nozzle body to open and to close the injection hole. The nozzle needle has a sliding portion capable of moving in the nozzle body in a sliding manner, an insertion portion, of which diameter is smaller than that of the sliding portion, and a pressure receiving portion connecting the sliding portion with the insertion portion. The nozzle body has a guide portion for slidably holding the sliding portion and a fuel sump chamber formed on the injection hole side of the guide portion. The insertion portion is inserted through the fuel sump chamber. A clearance decreasing toward the fuel sump chamber is provided between the guide portion and the sliding portion.

    摘要翻译: 燃料喷射装置具有形成有用于喷射燃料的喷射孔的喷嘴体和在喷嘴体中往复运动的喷嘴针,以打开和关闭喷射孔。 喷嘴针具有能够滑动地在喷嘴体内移动的滑动部,直径小于滑动部的插入部,以及将滑动部与插入部连接的受压部。 喷嘴体具有用于可滑动地保持滑动部分的引导部分和形成在引导部分的喷射孔侧面上的燃料油池室。 插入部分插入通过燃料池室。 在引导部分和滑动部分之间设置朝向燃料池室减小的间隙。

    Solid electrolyte gas sensor
    6.
    发明授权
    Solid electrolyte gas sensor 失效
    固体电解质气体传感器

    公开(公告)号:US6068747A

    公开(公告)日:2000-05-30

    申请号:US22485

    申请日:1998-02-12

    CPC分类号: G01N27/417 G01N33/0037

    摘要: A gas sensor using oxygen-ion-conductive solid electrolyte layers measures a concentration of a constituent gas such as NOx in a gas mixture such as an exhaust gas mixture of an internal combustion engine. The gas sensor includes a pair of oxygen pumping cells and a sensor cell. Before the constituent gas concentration is measured by the sensor cell, oxygen gas contained in the gas mixture has to be purged because the oxygen gas adversely affects the measurement of the constituent gas concentration. Two pumping cells disposed to face a chamber, into which the gas mixture is introduced, pump out the oxygen gas contained in the gas mixture so that the oxygen concentration is reduced substantially zero. Then, the gas mixture is diffused to the sensor cell where the constituent gas concentration is measured without the adverse influence of the oxygen gas. A marginal ion current which is proportional to the constituent gas concentration is measured by the sensor cell with a high accuracy and sensitivity.

    摘要翻译: 使用氧离子传导固体电解质层的气体传感器测量诸如内燃机的排气混合物的气体混合物中的诸如NOx的组成气体的浓度。 气体传感器包括一对氧气泵浦单元和传感器单元。 在通过传感器单元测量构成气体浓度之前,由于氧气不利地影响构成气体浓度的测量,所以必须清除气体混合物中所含的氧气。 设置为面对引入气体混合物的室的两个泵送单元泵出包含在气体混合物中的氧气,使得氧浓度基本上降低为零。 然后,气体混合物扩散到测量组分气体浓度而不受氧气的不利影响的传感器单元。 与组成气体浓度成比例的边际离子电流由传感器单元以高精度和灵敏度测量。

    Electromagnetic load drive apparatus
    7.
    发明授权
    Electromagnetic load drive apparatus 失效
    电磁负载驱动装置

    公开(公告)号:US06900973B2

    公开(公告)日:2005-05-31

    申请号:US10716493

    申请日:2003-11-20

    摘要: A drive apparatus supplies electric power to a solenoid of an inductive load from a battery and a capacitor to improve response of the load. The drive apparatus comprises switches for switching between a first state where a negative side of the battery is connected to a positive side of the battery, and a second state where the negative side of the capacitor is connected to the negative side of the battery. When the load is in operation, the voltage applied to the solenoid is raised by the voltage of the battery as the first state, so that the current flowing into the solenoid rises sharply to improve response of the load. When the operation of the load is to be stopped, the electric power to the solenoid is interrupted, and the energy accumulated in the solenoid is recovered by the capacitor as the second state.

    摘要翻译: 驱动装置从电池和电容器向电感负载的螺线管供电,以改善负载的响应。 驱动装置包括用于在电池的负极连接到电池的正极的第一状态和电容器的负极连接到电池的负极的第二状态之间切换的开关。 当负载运行时,施加到螺线管的电压由于电池的电压而升高为第一状态,使得流入螺线管的电流急剧上升以改善负载的响应。 当停止负载操作时,电磁线圈的电力中断,并且由电容器蓄积在螺线管中的能量作为第二状态恢复。

    Fuel injection device inhibiting abrasion
    9.
    发明授权
    Fuel injection device inhibiting abrasion 有权
    燃油喷射装置抑制磨损

    公开(公告)号:US07635098B2

    公开(公告)日:2009-12-22

    申请号:US12076592

    申请日:2008-03-20

    IPC分类号: F02M61/10

    摘要: A fuel injection device has a nozzle body formed with an injection hole for injecting fuel and a nozzle needle reciprocating in the nozzle body to open and to close the injection hole. The nozzle needle has a sliding portion capable of moving in the nozzle body in a sliding manner, an insertion portion, of which diameter is smaller than that of the sliding portion, and a pressure receiving portion connecting the sliding portion with the insertion portion. The nozzle body has a guide portion for slidably holding the sliding portion and a fuel sump chamber formed on the injection hole side of the guide portion. The insertion portion is inserted through the fuel sump chamber. A clearance decreasing toward the fuel sump chamber is provided between the guide portion and the sliding portion.

    摘要翻译: 燃料喷射装置具有形成有用于喷射燃料的喷射孔的喷嘴体和在喷嘴体中往复运动的喷嘴针,以打开和关闭喷射孔。 喷嘴针具有能够滑动地在喷嘴体内移动的滑动部,直径小于滑动部的插入部,以及将滑动部与插入部连接的受压部。 喷嘴体具有用于可滑动地保持滑动部分的引导部分和形成在引导部分的喷射孔侧面上的燃料油池室。 插入部分插入通过燃料池室。 在引导部分和滑动部分之间设置朝向燃料池室减小的间隙。

    Fuel injection device inhibiting abrasion
    10.
    发明申请
    Fuel injection device inhibiting abrasion 有权
    燃油喷射装置抑制磨损

    公开(公告)号:US20080173734A1

    公开(公告)日:2008-07-24

    申请号:US12076592

    申请日:2008-03-20

    IPC分类号: F02M61/12 F02M47/02

    摘要: A fuel injection device has a nozzle body formed with an injection hole for injecting fuel and a nozzle needle reciprocating in the nozzle body to open and to close the injection hole. The nozzle needle has a sliding portion capable of moving in the nozzle body in a sliding manner, an insertion portion, of which diameter is smaller than that of the sliding portion, and a pressure receiving portion connecting the sliding portion with the insertion portion. The nozzle body has a guide portion for slidably holding the sliding portion and a fuel sump chamber formed on the injection hole side of the guide portion. The insertion portion is inserted through the fuel sump chamber. A clearance decreasing toward the fuel sump chamber is provided between the guide portion and the sliding portion.

    摘要翻译: 燃料喷射装置具有形成有用于喷射燃料的喷射孔的喷嘴体和在喷嘴体中往复运动的喷嘴针,以打开和关闭喷射孔。 喷嘴针具有能够滑动地在喷嘴体内移动的滑动部,直径小于滑动部的插入部,以及将滑动部与插入部连接的受压部。 喷嘴体具有用于可滑动地保持滑动部分的引导部分和形成在引导部分的喷射孔侧面上的燃料油池室。 插入部分插入通过燃料池室。 在引导部分和滑动部分之间设置朝向燃料池室减小的间隙。