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1. 发明申请

US20100001094A1 APPARATUS AND METHOD FOR COOLING A FUEL INJECTOR INCLUDING A PIEZOELECTRIC ELEMENT 审中-公开
标题翻译：用于冷却包含压电元件的燃油喷射器的装置和方法
公开(公告)号：US20100001094A1
公开(公告)日：2010-01-07
申请号：US12167273
申请日：2008-07-03
申请人： Jay Venkataraghavan , Stephen R. Lewis , Amy M. Hess
发明人： Jay Venkataraghavan , Stephen R. Lewis , Amy M. Hess
IPC分类号： F02M51/06
CPC分类号： F02M47/027 , F02M51/0603 , F02M61/166 , F02M61/168 , F02M63/0057 , F02M2200/306
摘要： A fuel injector including a nozzle portion and an electrically actuated valve assembly configured to control a flow of fuel to the nozzle portion. The electrically actuated valve assembly may include a piezoelectric element and a biasing member. The fuel injector also may include a housing with at least a portion of the electrically actuated valve assembly disposed in the housing. The housing may define a cavity between the piezoelectric element and the housing. A thermally conductive material may be disposed at least partially within the cavity and may be configured to transfer heat from the piezoelectric element to the housing.
摘要翻译：一种燃料喷射器，包括喷嘴部分和电动致动的阀组件，其被配置成控制到喷嘴部分的燃料流。电动阀组件可以包括压电元件和偏置构件。燃料喷射器还可以包括壳体，其具有设置在壳体中的电致动阀组件的至少一部分。壳体可以在压电元件和壳体之间限定空腔。导热材料可以至少部分地设置在空腔内，并且可以被配置为将热量从压电元件传递到壳体。

2. 发明授权

US07714483B2 Fuel injector having piezoelectric actuator with preload control element and method 失效
标题翻译：具有预压控制元件和方法的压电致动器的燃油喷射器
公开(公告)号：US07714483B2
公开(公告)日：2010-05-11
申请号：US12077640
申请日：2008-03-20
申请人： Amy M. Hess , Daniel R. Ibrahim , Stephen R. Lewis , Jayaraman Venkataraghavan , Shriprasad Lakhapati
发明人： Amy M. Hess , Daniel R. Ibrahim , Stephen R. Lewis , Jayaraman Venkataraghavan , Shriprasad Lakhapati
IPC分类号： H01L41/053 , H01L41/083
CPC分类号： H01L41/0536 , F02M47/027 , F02M51/0603 , F02M61/167 , H01L41/083
摘要： A fuel injector includes a piezoelectric actuator subassembly having a casing and a piezoelectric element disposed within the casing. The piezoelectric element has an operating temperature range and includes a thermally contractive material having a negative thermal expansion coefficient over a second temperature range overlapping with the operating temperature range. A preload control element is coupled with the piezoelectric element and includes a thermally expansive material having a positive thermal expansion coefficient over the second temperature range. The preload control element maintains a constant preload on the piezoelectric element over a wide temperature range to inhibit temperature induced variability in operation, and can axially lengthen in opposition to axial shortening of the piezoelectric element, responsive to a temperature increase.
摘要翻译：燃料喷射器包括具有壳体和设置在壳体内的压电元件的压电致动器子组件。压电元件具有工作温度范围，并且包括在与工作温度范围重叠的第二温度范围内具有负热膨胀系数的热收缩材料。预压控制元件与压电元件耦合，并且包括在第二温度范围内具有正热膨胀系数的热膨胀材料。预压控制元件在宽的温度范围内在压电元件上保持恒定的预载荷，以防止温度引起的操作变化，并且可以响应于温度升高而轴向地延长与压电元件的轴向缩短相反。

3. 发明申请

US20090236441A1 Fuel injector having piezoelectric actuator with preload control element and method 失效
标题翻译：具有预压控制元件和方法的压电致动器的燃油喷射器
公开(公告)号：US20090236441A1
公开(公告)日：2009-09-24
申请号：US12077640
申请日：2008-03-20
申请人： Amy M. Hess , Daniel R. Ibrahim , Stephen R. Lewis , Jayaraman Venkataraghavan , Shriprasad Lakhapati
发明人： Amy M. Hess , Daniel R. Ibrahim , Stephen R. Lewis , Jayaraman Venkataraghavan , Shriprasad Lakhapati
IPC分类号： B05B1/02
CPC分类号： H01L41/0536 , F02M47/027 , F02M51/0603 , F02M61/167 , H01L41/083
摘要： A fuel injector includes a piezoelectric actuator subassembly having a casing and a piezoelectric element disposed within the casing. The piezoelectric element has an operating temperature range and includes a thermally contractive material having a negative thermal expansion coefficient over a second temperature range overlapping with the operating temperature range. A preload control element is coupled with the piezoelectric element and includes a thermally expansive material having a positive thermal expansion coefficient over the second temperature range. The preload control element maintains a constant preload on the piezoelectric element over a wide temperature range to inhibit temperature induced variability in operation, and can axially lengthen in opposition to axial shortening of the piezoelectric element, responsive to a temperature increase.
摘要翻译：燃料喷射器包括具有壳体和设置在壳体内的压电元件的压电致动器子组件。压电元件具有工作温度范围，并且包括在与工作温度范围重叠的第二温度范围内具有负热膨胀系数的热收缩材料。预压控制元件与压电元件耦合，并且包括在第二温度范围内具有正热膨胀系数的热膨胀材料。预压控制元件在宽的温度范围内在压电元件上保持恒定的预载荷，以防止温度引起的操作变化，并且可以响应于温度升高而轴向地延长与压电元件的轴向缩短相反。

4. 发明授权

US08056537B2 Engine having fuel injector with actuator cooling system and method 有权
标题翻译：具有燃油喷射器的发动机具有致动器冷却系统和方法
公开(公告)号：US08056537B2
公开(公告)日：2011-11-15
申请号：US12286005
申请日：2008-09-26
申请人： Jayaraman K. Venkataraghavan , Michael C. Long , Shriprasad Lakhapati , Stephen R. Lewis , Amy M. Hess
发明人： Jayaraman K. Venkataraghavan , Michael C. Long , Shriprasad Lakhapati , Stephen R. Lewis , Amy M. Hess
IPC分类号： F02M69/46
CPC分类号： F02M47/027 , F02M53/04 , F02M53/043 , F02M2700/077
摘要： An internal combustion engine, such as a direct injection compression ignition diesel engine, includes an engine housing having a plurality of cylinders and a plurality of fuel injectors associated one with each of the cylinders. The fuel injectors each include a first fuel inlet and a second fuel inlet, and an actuator subassembly which is configured to actuate a control valve assembly positioned within the fuel injector. The engine further includes a fuel system having a fuel supply circuit, and a cooling system for the actuator subassembly having a cooling circuit with a segment in common with a segment of the fuel system. The cooling system is configured to pass cooling fuel across a heat exchange interface of the actuator subassembly to exchange heat therewith. The actuator subassembly may include a piezoelectric actuator and a preloading spring, which are each fluidly sealed within a casing of the actuator subassembly.
摘要翻译：诸如直喷式压缩点火柴油发动机的内燃机包括具有多个气缸的发动机壳体和与每个气缸相关联的多个燃料喷射器。燃料喷射器各自包括第一燃料入口和第二燃料入口，以及致动器子组件，其构造成致动位于燃料喷射器内的控制阀组件。发动机还包括具有燃料供给回路的燃料系统和用于致动器子组件的冷却系统，该冷却系统具有冷却回路，该冷却回路具有与燃料系统的一部分共同的段。冷却系统构造成使冷却燃料穿过致动器子组件的热交换界面以与其交换热量。致动器子组件可以包括压电致动器和预加载弹簧，每个流体密封在致动器子组件的壳体内。

5. 发明申请

US20100077971A1 Engine having fuel injector with actuator cooling system and method 有权
标题翻译：具有燃油喷射器的发动机具有致动器冷却系统和方法
公开(公告)号：US20100077971A1
公开(公告)日：2010-04-01
申请号：US12286005
申请日：2008-09-26
申请人： Jayaraman K. Venkataraghavan , Michael C. Long , Shriprasad Lakhapati , Stephen R. Lewis , Amy M. Hess
发明人： Jayaraman K. Venkataraghavan , Michael C. Long , Shriprasad Lakhapati , Stephen R. Lewis , Amy M. Hess
IPC分类号： F02M53/04 , F02M51/06
CPC分类号： F02M47/027 , F02M53/04 , F02M53/043 , F02M2700/077
摘要： An internal combustion engine, such as a direct injection compression ignition diesel engine, includes an engine housing having a plurality of cylinders and a plurality of fuel injectors associated one with each of the cylinders. The fuel injectors each include a first fuel inlet and a second fuel inlet, and an actuator subassembly which is configured to actuate a control valve assembly positioned within the fuel injector. The engine further includes a fuel system having a fuel supply circuit, and a cooling system for the actuator subassembly having a cooling circuit with a segment in common with a segment of the fuel system. The cooling system is configured to pass cooling fuel across a heat exchange interface of the actuator subassembly to exchange heat therewith. The actuator subassembly may include a piezoelectric actuator and a preloading spring, which are each fluidly sealed within a casing of the actuator subassembly.
摘要翻译：诸如直喷式压缩点火柴油发动机的内燃机包括具有多个气缸的发动机壳体和与每个气缸相关联的多个燃料喷射器。燃料喷射器各自包括第一燃料入口和第二燃料入口，以及致动器子组件，其构造成致动位于燃料喷射器内的控制阀组件。发动机还包括具有燃料供给回路的燃料系统和用于致动器子组件的冷却系统，该冷却系统具有冷却回路，该冷却回路具有与燃料系统的一部分共同的段。冷却系统构造成使冷却燃料穿过致动器子组件的热交换界面以与其交换热量。致动器子组件可以包括压电致动器和预加载弹簧，每个流体密封在致动器子组件的壳体内。

6. 发明授权

US08297532B2 Apparatus for cooling a fuel injector 有权
标题翻译：用于冷却燃料喷射器的装置
公开(公告)号：US08297532B2
公开(公告)日：2012-10-30
申请号：US12157268
申请日：2008-06-09
申请人： Jay Venkataraghavan , Stephen R. Lewis
发明人： Jay Venkataraghavan , Stephen R. Lewis
IPC分类号： B05B1/00 , F02M51/06
CPC分类号： F02M53/04 , F02M53/043 , F02M53/08 , F02M2200/8023 , F02M2200/9053 , F02M2200/9076
摘要： A fuel injector including a nozzle portion, a solenoid operated valve assembly configured to control a flow of fuel to the nozzle portion, a housing, at least a portion of the solenoid operated valve assembly disposed in the housing, the housing formed of a first material having a first thermal conductivity value, and a heat transfer element associated with the solenoid operated valve assembly, the heat transfer element attached to the housing, the heat transfer element formed of a second material having a second thermal conductivity value, the second thermal conductivity value being greater than the first thermal conductivity value.
摘要翻译：一种燃料喷射器，包括喷嘴部分，构造成控制到喷嘴部分的燃料流动的电磁阀组件，壳体，设置在壳体中的电磁阀组件的至少一部分，壳体由第一材料具有第一热传导率值和与电磁阀组件相关联的传热元件，传热元件附接到壳体，传热元件由具有第二热导率值的第二材料形成，第二热导率值大于第一热导率值。

7. 发明授权

US08214132B2 Efficient wave form to control fuel system 有权
标题翻译：高效波形控制燃油系统
公开(公告)号：US08214132B2
公开(公告)日：2012-07-03
申请号：US12884798
申请日：2010-09-17
申请人： Nadeem Bunni , Daniel R. Puckett , Jay Venkataraghavan , Stephen R. Lewis , Angela L. Moore
发明人： Nadeem Bunni , Daniel R. Puckett , Jay Venkataraghavan , Stephen R. Lewis , Angela L. Moore
IPC分类号： F02D41/26
CPC分类号： F02D41/20 , F02D2041/2006 , F02D2041/2058
摘要： An efficient control wave form is utilized to actuate the solenoids of a fuel system to reduce boost power/energy consumption. The solenoid is initially energized by applying a boost voltage from an electronic controller across a solenoid coil circuit. The electronic controller monitors the current level in the solenoid coil circuit, and changes to a reduced battery voltage when the current level in the solenoid coil circuit reaches a predetermined trigger current. The controller then maintains a pull-in current based upon battery voltage for a pull-in duration that initiates movement of the solenoid armature from an initial air gap position toward a final air gap position. After the pull-in duration, the current level is dropped to a hold in level for the remaining duration of the actuation event. The solenoid may be used for fuel injector control and/or pump control, such as to control fuel injection and pumping events respectively.
摘要翻译：利用有效的控制波形来驱动燃料系统的螺线管以降低升压功率/能量消耗。螺线管最初通过在电磁线圈电路上施加来自电子控制器的升压电压而被激励。电子控制器监视电磁线圈电路中的当前电平，并且当电磁线圈电路中的电流水平达到预定触发电流时，电流控制器改变为降低的电池电压。然后，控制器基于电池电压维持引入电流，以引起电磁铁衔铁从初始气隙位置向最终气隙位置的移动。在拉入持续时间之后，当前电平在启动事件的剩余持续时间内下降到保持电平。螺线管可以用于燃料喷射器控制和/或泵控制，例如分别控制燃料喷射和泵送事件。

8. 发明申请

US20120067329A1 Efficient Wave Form To Control Fuel System 有权
标题翻译：有效波形控制燃油系统
公开(公告)号：US20120067329A1
公开(公告)日：2012-03-22
申请号：US12884798
申请日：2010-09-17
申请人： Nadeem Bunni , Daniel R. Puckett , Jay Venkataraghavan , Stephen R. Lewis , Angela L. Moore
发明人： Nadeem Bunni , Daniel R. Puckett , Jay Venkataraghavan , Stephen R. Lewis , Angela L. Moore
IPC分类号： F02M51/00
CPC分类号： F02D41/20 , F02D2041/2006 , F02D2041/2058
摘要： An efficient control wave form is utilized to actuate the solenoids of a fuel system to reduce boost power/energy consumption. The solenoid is initially energized by applying a boost voltage from an electronic controller across a solenoid coil circuit. The electronic controller monitors the current level in the solenoid coil circuit, and changes to a reduced battery voltage when the current level in the solenoid coil circuit reaches a predetermined trigger current. The controller then maintains a pull-in current based upon battery voltage for a pull-in duration that initiates movement of the solenoid armature from an initial air gap position toward a final air gap position. After the pull-in duration, the current level is dropped to a hold in level for the remaining duration of the actuation event. The solenoid may be used for fuel injector control and/or pump control, such as to control fuel injection and pumping events respectively.
摘要翻译：利用有效的控制波形来驱动燃料系统的螺线管以降低升压功率/能量消耗。螺线管最初通过在电磁线圈电路上施加来自电子控制器的升压电压而被激励。电子控制器监视电磁线圈电路中的当前电平，并且当电磁线圈电路中的电流水平达到预定触发电流时，电流控制器改变为降低的电池电压。然后，控制器基于电池电压维持引入电流，以引起电磁铁衔铁从初始气隙位置向最终气隙位置的移动。在拉入持续时间之后，当前电平在启动事件的剩余持续时间内下降到保持电平。螺线管可以用于燃料喷射器控制和/或泵控制，例如分别控制燃料喷射和泵送事件。

9. 发明申请

US20090302130A1 Apparatus for cooling a fuel injector 有权
标题翻译：用于冷却燃料喷射器的装置
公开(公告)号：US20090302130A1
公开(公告)日：2009-12-10
申请号：US12157268
申请日：2008-06-09
申请人： Jay Venkataraghavan , Stephen R. Lewis
发明人： Jay Venkataraghavan , Stephen R. Lewis
IPC分类号： B05B1/00
CPC分类号： F02M53/04 , F02M53/043 , F02M53/08 , F02M2200/8023 , F02M2200/9053 , F02M2200/9076
摘要： A fuel injector including a nozzle portion, a solenoid operated valve assembly configured to control a flow of fuel to the nozzle portion, a housing, at least a portion of the solenoid operated valve assembly disposed in the housing, the housing formed of a first material having a first thermal conductivity value, and a heat transfer element associated with the solenoid operated valve assembly, the heat transfer element attached to the housing, the heat transfer element formed of a second material having a second thermal conductivity value, the second thermal conductivity value being greater than the first thermal conductivity value.
摘要翻译：一种燃料喷射器，包括喷嘴部分，构造成控制到喷嘴部分的燃料流动的电磁阀组件，壳体，设置在壳体中的电磁阀组件的至少一部分，壳体由第一材料具有第一热传导率值和与电磁阀组件相关联的传热元件，传热元件附接到壳体，传热元件由具有第二热导率值的第二材料形成，第二热导率值大于第一热导率值。

10. 发明授权

US09135868B2 Direct-view MEMS display devices and methods for generating images thereon 有权
标题翻译：用于在其上产生图像的直视MEMS显示装置和方法
公开(公告)号：US09135868B2
公开(公告)日：2015-09-15
申请号：US13597943
申请日：2012-08-29
申请人： Nesbitt W. Hagood, IV , Jignesh Gandhi , Abraham McAllister , Rainer M. Malzbender , Stephen R. Lewis
发明人： Nesbitt W. Hagood, IV , Jignesh Gandhi , Abraham McAllister , Rainer M. Malzbender , Stephen R. Lewis
IPC分类号： G09G3/34 , G02B26/00 , G02B26/02 , G09G3/20 , G09G5/06 , G09G5/36 , G09G5/393
CPC分类号： G09G3/346 , G02B26/004 , G02B26/02 , G09G3/2003 , G09G3/2022 , G09G3/2081 , G09G3/3413 , G09G5/06 , G09G5/363 , G09G5/393 , G09G2300/0809 , G09G2310/0235 , G09G2310/0251 , G09G2310/08 , G09G2320/0247 , G09G2320/064 , G09G2320/066 , G09G2330/021 , G09G2360/144
摘要： A direct-view display includes an array of MEMS light modulators and a control matrix formed on a transparent substrate, where each light modulator can be driven into at least two states, and a controller for controlling the states of each light modulator in the array. The control matrix transmits data and actuation voltages to the array. The controller includes an input, a processor, a memory, and an output. The input receives image data encoding an image frame for display. The processor derives a plurality of sub-frame data sets from the image data, where each sub-frame data set indicates desired states of light modulators in multiple rows and multiple columns of the array. The memory stores the plurality of sub-frame data sets. The output outputs the plurality of sub-frame data sets according to an output sequence to drive light modulators into the states indicated in the sub-frame data sets.
摘要翻译：直视图显示器包括MEMS光调制器的阵列和形成在透明基板上的控制矩阵，其中每个光调制器可以被驱动至少两种状态;以及控制器，用于控制阵列中每个光调制器的状态。控制矩阵将数据和致动电压传输到阵列。控制器包括输入，处理器，存储器和输出。该输入接收用于显示的图像帧的编码图像数据。处理器从图像数据中导出多个子帧数据集，其中每个子帧数据集指示阵列的多行和多列的光调制器的期望状态。存储器存储多个子帧数据集。输出根据输出序列输出多个子帧数据组，以驱动光调制器进入子帧数据集中指示的状态。

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