Flow sensor having improved operational performance
    51.
    发明申请
    Flow sensor having improved operational performance 审中-公开
    流量传感器具有改进的操作性能

    公开(公告)号:US20050000281A1

    公开(公告)日:2005-01-06

    申请号:US10840034

    申请日:2004-05-04

    CPC分类号: G01F1/699 G01F1/6845

    摘要: A flow sensor in which all bridge resistor elements of a bridge circuit are arranged on a chip together with a heating resistor element, so that the drift of the bridge resistor elements will then have only a very slight effect on the output signal of the bridge circuit, which may be picked off at the electrical connections.

    摘要翻译: 一个流量传感器,其中桥式电路的所有桥式电阻元件与加热电阻元件一起布置在芯片上,使得桥式电阻元件的漂移对桥式电路的输出信号将产生非常轻微的影响 ,其可以在电连接处被拾取。

    Fiber-optic pressure sensor
    52.
    发明授权
    Fiber-optic pressure sensor 失效
    光纤压力传感器

    公开(公告)号:US06820488B2

    公开(公告)日:2004-11-23

    申请号:US10459362

    申请日:2003-06-10

    IPC分类号: G01L900

    CPC分类号: G01L9/0077

    摘要: A fiber-optic pressure sensor having a pressure measuring head including a housing which accommodates a diaphragm functioning as a pressure transducer and completing a translational movement under applied pressure and including at least one optical waveguide, the face of which is directed to the inside surface of the diaphragm and via which the light emitted by a light source is introduced into the pressure measuring head, the inside diaphragm surface having a pattern of highly reflective areas and areas of low reflectivity.

    摘要翻译: 一种光纤压力传感器,其具有压力测量头,该压力测量头包括壳体,所述壳体容纳用作压力换能器的膜片,并在施加的压力下完成平移运动,并且包括至少一个光波导,所述至少一个光波导面朝向 由光源发出的光被引入压力测量头,光阑表面具有高反射区域和低反射率区域的图案。

    Vibration pickup with pressure sleeve
    53.
    发明授权
    Vibration pickup with pressure sleeve 失效
    带压力套筒的振动拾取器

    公开(公告)号:US06647760B2

    公开(公告)日:2003-11-18

    申请号:US09788962

    申请日:2001-02-20

    IPC分类号: G01L2322

    CPC分类号: G01L23/222

    摘要: A vibration pickup has a pressure sleeve which is placeable on a component causing vibrations, a sensor element which detects the vibration, a seismic mass which is placeable outside of the sleeve on a support surface of the sensor element with an axial pretensioning, so that the sensor element is held between the seismic mass and a flange-like segment of the pressure sleeve, the seismic mass and the pressure sleeve being formed as a one-piece integral component.

    摘要翻译: 振动拾取器具有压力套筒,其可放置在引起振动的部件上,检测振动的传感器元件,具有轴向预张紧的可在套筒外部放置在传感器元件的支撑表面上的抗震质量, 传感器元件被保持在地震质量块和压力套筒的法兰状段之间,地震质量块和压力套筒形成为一体的整体部件。

    Device for measuring the mass of a flowing medium

    公开(公告)号:US06422070B1

    公开(公告)日:2002-07-23

    申请号:US09866721

    申请日:2001-05-30

    IPC分类号: G01F168

    摘要: Devices for measuring the mass of a flowing medium using a temperature-sensitive measuring element have the disadvantage that considerable measuring errors may occur in the event of a pulsating flow characterized by flow fluctuations. In order to counteract these measuring errors, the device (1) possesses an axially extending measuring duct (33), in which a temperature-sensitive measuring element (20) is accommodated. The measuring duct (33) extends from the inlet mouth (36) to a deflecting duct (34), out of which the flowing medium flows out from an outlet orifice (46) without any axial distance from the inlet mouth (36) and radially underneath the latter. The invention is provided for measuring the mass of a flowing medium, in particular for measuring the intake air mass of internal combustion engines.

    Device for measuring the mass of a flowing medium
    55.
    发明授权
    Device for measuring the mass of a flowing medium 失效
    用于测量流动介质质量的装置

    公开(公告)号:US06272920B1

    公开(公告)日:2001-08-14

    申请号:US09445403

    申请日:1999-12-07

    IPC分类号: G01F1684

    摘要: A device for measuring the mass of a medium flowing in a line, especially the aspirated air mass on an internal combustion engine, comprising a flow tube, which is disposed in the line. A measuring element around which the flowing medium flows is disposed in the flow tube. The medium flows from the line into the flow tube at an inlet opening and out of the flow tube into the line at an outlet opening. An outlet end face of the flow tube surrounding the outlet opening has structural grooves, which extend with a radial directional component with respect to a longitudinal axis of the flow tube.

    摘要翻译: 一种用于测量在一条管线中流动的介质的质量的装置,特别是内燃机上的抽吸空气质量的装置,包括设置在管线中的流动管。 流动介质流动的测量元件设置在流量管中。 介质在入口开口处从管线流入流管,并在流出管中从出口开口流入管线。 围绕出口的流管的出口端面具有结构凹槽,其相对于流管的纵向轴线以径向方向分量延伸。

    Device for measuring the mass of a flowing medium
    56.
    发明授权
    Device for measuring the mass of a flowing medium 失效
    用于测量流动介质质量的装置

    公开(公告)号:US06176131B1

    公开(公告)日:2001-01-23

    申请号:US09169946

    申请日:1998-10-13

    IPC分类号: G01F168

    CPC分类号: G01F1/684 G01F1/6845

    摘要: Known sensor supports have a recess in which a sensor element is glued by means of an adhesive. The device according to the invention has a plate-shaped sensor element that is accommodated in a recess of a sensor support. A sensor region (3) has at least one measurement resistor, which region is exposed to the flowing medium wherein a gap remains between the sensor element and the recess. To protect an evaluation circuit connected to the sensor element against moisture, the provision is made, according to the invention, that at least partial regions of the evaluation circuit and partial regions of the sensor element are covered by a protective coating, wherein the gap has at least one enlargement by means of which the flow of the protective coating can be influenced. The device according to the invention is used for measuring the mass of a flowing medium in the intake air mass of internal combustion engines.

    摘要翻译: 已知的传感器支架具有凹部,传感器元件借助于粘合剂粘合在该凹部中。 根据本发明的装置具有容纳在传感器支撑件的凹部中的板状传感器元件。 传感器区域(3)具有至少一个测量电阻器,该区域暴露于流动介质中,其中间隙保留在传感器元件和凹部之间。 为了保护连接到传感器元件的评估电路免受潮湿的影响,根据本发明,提供评估电路的至少部分区域和传感器元件的部分区域被保护涂层覆盖,其中间隙具有 可以影响保护涂层的流动的至少一个放大图。 根据本发明的装置用于测量内燃机的进气体中的流动介质的质量。

    Device for measuring the mass of a flowing medium
    57.
    发明授权
    Device for measuring the mass of a flowing medium 失效
    用于测量流动介质质量的装置

    公开(公告)号:US5918279A

    公开(公告)日:1999-06-29

    申请号:US964627

    申请日:1997-11-05

    CPC分类号: G01F15/00 G01F1/6842 G01F5/00

    摘要: A device for measuring the mass of a flowing medium, or flow rate meters, having a measuring element accommodated in a measurement support; upstream of the measuring element, a grid with flow openings is provided. To attain a substantially rotational symmetrical velocity distribution even in the case of a severely impeded oncoming flow, the grid has flow openings, which at least regionally have a different flow cross section. The flow cross sections of the flow openings are adapted to the oncoming flow, in order to bring about a flow with substantially even velocity distribution downstream of the grid. The device is intended for measuring the mass of a flowing medium, in particular for measuring the mass of aspirated air in internal combustion engines.

    摘要翻译: 一种用于测量容纳在测量支架中的测量元件的流动介质或流量计的质量的装置; 在测量元件的上游设置有具有流动开口的格栅。 为了即使在严重阻碍的迎面流动的情况下也获得基本上旋转对称的速度分布,网格具有至少在区域上具有不同流动横截面的流动开口。 流动开口的流动横截面适于迎面而来的流动,以便在网格下游带来基本均匀的速度分布的流动。 该装置旨在测量流动介质的质量,特别是用于测量内燃机中吸入空气的质量。

    Arrangement and method for checking the tightness of a vessel
    58.
    发明授权
    Arrangement and method for checking the tightness of a vessel 失效
    用于检查船舶紧密度的布置和方法

    公开(公告)号:US5898103A

    公开(公告)日:1999-04-27

    申请号:US877799

    申请日:1997-06-18

    IPC分类号: G01M3/26 F02M25/08 G01M3/04

    CPC分类号: F02M25/0818

    摘要: The invention is directed to an arrangement for checking the tightness of a vessel such as a tank system of a motor vehicle. The vessel can have a possible leak and this can be viewed as a first flow resistor. The arrangement includes a pressure source for generating a pressure change in the vessel and a pressure divider system is connected between the pressure source and the vessel which is subjected to the pressure change. The pressure divider system is defined by and includes the first flow resistor and a reference branch having a predetermined second flow resistor. A pressure sensor measures the pressure relationships in the pressure divider system. The invention provides a reliable statement as to a possible leak in the tank system of a motor vehicle while providing a simple and therefore cost effective manufacture. The pressure source used to check the tightness can be utilized for other tasks required in a motor vehicle. The invention also relates to a method for checking the tightness of the vessel.

    摘要翻译: 本发明涉及一种用于检查诸如机动车辆的罐系统的容器的紧密度的装置。 容器可能有可能的泄漏,这可以被看作是第一流量电阻器。 该装置包括用于在容器中产生压力变化的压力源,并且压力分配器系统连接在压力源和经受压力变化的容器之间。 压力分配器系统由第一流量电阻器和具有预定的第二流量电阻器的参考支路限定并包括。 压力传感器测量压力分配器系统中的压力关系。 本发明提供了关于机动车辆的罐系统中可能的泄漏的可靠陈述,同时提供简单且因此成本有效的制造。 用于检查紧密度的压力源可用于机动车辆中所需的其他任务。 本发明还涉及一种用于检查容器密封性的方法。

    Heated hot-film air-mass sensor
    60.
    发明授权
    Heated hot-film air-mass sensor 有权
    加热热膜空气传感器

    公开(公告)号:US07966877B2

    公开(公告)日:2011-06-28

    申请号:US11887718

    申请日:2006-02-23

    IPC分类号: G01F1/692

    摘要: To determine air mass flows, especially for controlling internal combustion engines, a hot-film air-mass sensor is provided, which may be used especially for sensing air mass flows in the intake tract of an internal combustion engine. The hot-film air-mass sensor has a sensor chip having a sensor frame and a sensor diaphragm having at least one heating element and at least two temperature sensors. Furthermore, the hot-film air-mass sensor has a chip carrier for mounting the sensor chip, as well as at least one additional heating element. The sensor chip is able to be heated up using the at least one additional heating element, which is inserted into the chip carrier. Compared to the usual devices, the hot-film air-mass sensor has a lower susceptibility to contamination, especially by oil films.

    摘要翻译: 为了确定空气质量流量,特别是用于控制内燃机,提供了一种热膜空气质量传感器,其可以特别用于感测内燃机进气道中的空气质量流量。 热膜空气质量传感器具有传感器芯片,传感器芯片具有至少一个加热元件和至少两个温度传感器的传感器框架和传感器隔膜。 此外,热膜空气质量传感器具有用于安装传感器芯片的芯片载体,以及至少一个附加的加热元件。 传感器芯片能够使用插入到芯片载体中的至少一个附加加热元件来加热。 与常规装置相比,热膜空气质量传感器对污染的敏感性较低,特别是油膜。