Air flow rate measuring apparatus
    5.
    发明授权
    Air flow rate measuring apparatus 有权
    空气流量测量仪

    公开(公告)号:US08695409B2

    公开(公告)日:2014-04-15

    申请号:US13596385

    申请日:2012-08-28

    IPC分类号: G01M15/04

    摘要: An air flow rate measuring apparatus includes a heater and a control circuit. The heater heats a part of an intake air sucked into an engine. The control circuit controls an energization of the heater. The heater has a measuring-mode temperature when a flow rate of the intake air is measured. The control circuit has a heat cleaner which temporarily raises a temperature of the heater higher than the measuring-mode temperature when an energization of the air flow rate measuring apparatus is started.

    摘要翻译: 空气流量测量装置包括加热器和控制电路。 加热器加热吸入发动机的进气的一部分。 控制电路控制加热器的通电。 当测量进气的流量时,加热器具有测量模式温度。 控制电路具有在开始空气流量测量装置通电时临时使加热器的温度高于测量模式温度的热清洁器。

    Flow measuring device having resistors arranged in nesting arrangement
    8.
    发明授权
    Flow measuring device having resistors arranged in nesting arrangement 失效
    具有布置成嵌套布置的电阻的流量测量装置

    公开(公告)号:US07703320B2

    公开(公告)日:2010-04-27

    申请号:US12120517

    申请日:2008-05-14

    IPC分类号: G01F1/68

    CPC分类号: G01F1/692

    摘要: According to a flow measuring device, first ranges formed by a first plurality of resistors form a single continuous value range on a flow direction coordinate axis. Thus, the first plurality of resistors is limited from being thermally insulated from one another in the flow direction, and thereby detectivity is improved. Also, second ranges formed by a second plurality of resistors form an other single continuous value range on a longitudinal direction coordinate axis. The other continuous value range includes a position that corresponds to a half length of a heating element in a longitudinal direction. As a result, detection difference is obtained at the position, at which a temperature is most optimally detected, and thereby detectivity is further improved.

    摘要翻译: 根据流量测量装置,由第一多个电阻器形成的第一范围在流动方向坐标轴上形成单个连续值范围。 因此,第一多个电阻器被限制为在流动方向上彼此热绝缘,从而提高了检测性。 此外,由第二多个电阻器形成的第二范围在纵向坐标轴上形成另一个单个连续值范围。 另一连续值范围包括对应于加热元件在纵向上的半长度的位置。 结果,在最佳检测温度的位置处获得检测差异,从而进一步提高检测性。

    Flow meter having airflow sensor
    10.
    发明授权
    Flow meter having airflow sensor 有权
    流量计有气流传感器

    公开(公告)号:US06694811B2

    公开(公告)日:2004-02-24

    申请号:US10379938

    申请日:2003-03-06

    IPC分类号: G01F168

    CPC分类号: G01F1/6842

    摘要: A flow meter is formed with a passage for introducing and carrying air to measure and has a sensing part disposed in the passage for measuring a flow rate of the air. A contraction part is formed on an inner surface of the passage so that the contraction part faces the sensing part. The contraction part narrows the flow of the air flowing near the sensing part. A flat surface of the contraction part is formed in parallel with the surface of the sensing part and at least upstream of the sensing part. Thus, collision of particles against the sensing part and adhesion of contaminants to the sensing pert are inhibited. Meanwhile, the flow rate of the air is measured stably and accurately.

    摘要翻译: 流量计形成有用于引入和携带空气进行测量的通道,并且具有设置在通道中的用于测量空气流量的感测部分。 收缩部分形成在通道的内表面上,使得收缩部分面向感测部分。 收缩部分使感应部分附近的空气流动变窄。 收缩部分的平坦表面形成为与感测部分的表面平行并且至少在感测部分的上游。 因此,抑制了颗粒与传感部分的碰撞以及污染物与传感污染物的粘附。 同时,稳定且准确地测量空气的流量。