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33 条记录 (耗时 0.016 秒)

    System with thermal type air flow measuring instrument for internal combustion engine
    1.
    发明公开
    System with thermal type air flow measuring instrument for internal combustion engine 失效
    内置热式空气流量测量仪的系统

    公开(公告)号：EP2006647A1

    公开(公告)日：2008-12-24

    申请号：EP08013754.0

    申请日：1995-05-24

    申请人： Hitachi Ltd. ,  Hitachi Car Engineering Co., Ltd.

    发明人： Takayuki, Saito ,  Nobukatsu, Arai ,  Igarashi, Shinya ,  Kobayashi, Chihiro ,  Hirayama, Hiroshi

    IPC分类号： G01F1/68 ,  G01F5/00

    CPC分类号： G01F1/6842 ,  G01F1/684 ,  G01F5/00

    摘要： The invention relates to a thermal type air flow measuring apparatus comprising a body (6) which provides with a main passage (5) and a module which is integrated combination of an auxiliary passage (3) having a bent portion (303) and an electronic circuit (8) electrically connected to a heating resistor (1) disposed in said auxiliary passage (3), wherein said module is attached on said body (6) which has an insertion hole (14) through which said auxiliary passage (3) of said module is inserted into said main passage, said electric circuit (8) is disposed outside of said main passage (5), and wherein said body (6) has a mounting surface (15) for mounting said module thereon, said mounting surface (15) projects from an outer surface of said body, and an inlet (301) of said auxiliary passage (3) is placed in the main passage such that a position the inlet (301) is in an area shifted from a center of a cross section of the main passage and around the center of the main passage.

    摘要翻译： 本发明涉及一种热式空气流量测量装置，该装置包括具有主通道（5）的主体（6）和具有弯曲部分（303）的辅助通道（3）和电子装置 （3）中的加热电阻器（1）电连接的电路（8），其中所述模块附接在具有插入孔（14）的所述主体（6）上，所述辅助通道（3）通过所述插入孔 所述模块插入所述主通道中，所述电路（8）设置在所述主通道（5）的外部，并且其中所述主体（6）具有用于在其上安装所述模块的安装表面（15），所述安装表面 15）从所述主体的外表面突出，并且所述辅助通道（3）的入口（301）被放置在主通道中，使得入口（301）的位置处于从十字形的中心偏移的区域 主通道的截面以及主通道的中心周围。

    Thermal-type air flow measuring instrument
    3.
    发明公开
    Thermal-type air flow measuring instrument 失效
    Luftströmungsmesservom thermischen Typ

    公开(公告)号：EP1380816A1

    公开(公告)日：2004-01-14

    申请号：EP03021615.4

    申请日：1995-10-17

    申请人： Hitachi, Ltd. ,  Hitachi Car Engineering Co., Ltd.

    发明人： Igarashi, Shinya ,  Kobayashi, Chihiro ,  Mouri, Yasunori ,  Ishikawa, Hitoshi ,  Uchiyama, Kaoru

    IPC分类号： G01F1/684

    CPC分类号： G01F5/00 ,  G01F1/684 ,  G01F1/6842

    摘要： The invention relates to a thermal-type air flow measuring instrument comprising:

    two temperature sensing resistors (1a, 1b) mounted respectively at an upstream side and a downstream side within a fluid passage (5) in close proximity to each other for measuring a flow rate of the fluid in said fluid passage (5);
    an auxiliary passage (3) provided in the fluid passage (5), the auxiliary passage (3) comprising a first passageway (302) in which the two temperature sensing resistors (1a, 1b) are disposed, a second passageway (304) through which most of the fluid which entered the first passageway (302) in a forward direction flows, and a third opening (309) which is arranged downstream of said two temperature sensing resistors (1a, 1b) inside the auxiliary passage (3),
    wherein the fluid passage (5) is an intake air passage of an internal combustion engine and wherein an overall length L of the flow passage through which the fluid flows in the auxiliary passage (3) is longer than the length ℓ between an inlet port (301) and the outlet port (305).

    摘要翻译： 本发明涉及一种热式气流测量仪，包括：两个温度感测电阻（1a，1b）分别安装在彼此靠近的流体通道（5）内的上游侧和下游侧，用于测量流量 所述流体通道（5）中的流体速率; 设置在流体通道（5）中的辅助通道（3），辅助通道（3）包括第一通道（302），其中设置有两个温度感测电阻器（1a，1b），第二通道（304） 其中大部分向前进入第一通道（302）的流体流动，并且在辅助通道（3）内部布置在所述两个温度感测电阻器（1a，1b）的下游的第三开口（309），其中 流体通道（5）是内燃机的进气通道，其中流体在辅助通道（3）中流动的流道的总长度L比入口（301）的长度l长 ）和出口（305）。

    Thermal type flow measuring instrument and temperature-error correcting apparatus thereof
    7.
    发明公开
    Thermal type flow measuring instrument and temperature-error correcting apparatus thereof 失效
    ThermischesDurchflussmessgerätund Temperaturfehlerkorrekturvorrichtungdafür

    公开(公告)号：EP1793209A1

    公开(公告)日：2007-06-06

    申请号：EP07003890.6

    申请日：1998-07-03

    申请人： Hitachi, Ltd. ,  Hitachi Car Engineering Co., Ltd.

    发明人： Igarashi, Shinya ,  Makie, Yasuo ,  Ohta, Kenji ,  Kanke, Atsushi ,  Kadohiro, Takashi ,  Kobayashi, Chihiro

    IPC分类号： G01F1/696 ,  G01F1/69 ,  G01F15/04 ,  F02D41/18

    CPC分类号： F02D41/187 ,  F02D2200/0414 ,  G01F1/6842 ,  G01F1/698

    摘要： In flow detection by a thermal-type flow measuring instrument (1), a flow rate value with reduced measurement error due to temperature variation can be obtained even under environment where a fluid temperature and a circuit temperature are different.
    A measurement error due to temperature variation of the fluid of the thermal-type flow measuring instrument (1) can be corrected on the basis of a temperature of the fluid by adjusting the measurement error to be constant ratio irrespective of the flow rate. On the other hand, a temperature characteristic of the circuit is adjusted to be substantially zero %.

    摘要翻译： 在热式流量测量仪（1）的流量检测中，即使在流体温度和回路温度不同的环境下也可以获得由于温度变化导致的测量误差降低的流量值。 可以根据流量的温度，通过将测量误差调整为恒定比例而不考虑流量，来校正热型流量计（1）的流体温度变化引起的测量误差。 另一方面，将电路的温度特性调整为基本为零％。

    Thermal resistor type air flow measuring apparatus
    8.
    发明公开
    Thermal resistor type air flow measuring apparatus 审中-公开
    阻燃剂thermischer Luftdurchflussmesser

    公开(公告)号：EP0902261A1

    公开(公告)日：1999-03-17

    申请号：EP98117293.5

    申请日：1998-09-11

    申请人： Hitachi, Ltd. ,  Hitachi Car Engineering Co., Ltd.

    发明人： Kobayashi, Chihiro ,  Igarashi, Shinya ,  Kozawa, Masayuki ,  Kanke, Atsushi

    IPC分类号： G01F1/72 ,  G01F1/696 ,  F02D41/18

    CPC分类号： F02D41/187 ,  G01F1/696 ,  G01F1/72

    摘要： The invention relates to a thermal resistor type air flow measuring apparatus for correcting properly the error caused by the pulsation in the intake pipe in detecting the air flow of the internal combustion engine, using a passage (11, 12, 14) in which a thermal resistor (3, 4) is placed inside the auxiliary air passage into which the reverse flow (24) hardly flows directly and preventing the error caused by the reverse flow, the existence of the reverse flow (24) is judged by the ratio of the amplitude to the mean value using the maximum value, the minimum value and the mean value of the forward air flow (23) waveform, as well as the error caused by the increase of the forward air flow (23) is corrected.

    摘要翻译： 本发明涉及一种热敏电阻式空气流量测量装置，用于使用通道（11,12,14）适当地校正在检测内燃机的空气流量时由进气管中的脉动引起的误差，其中热 电阻器（3,4）被放置在辅助空气通道内，逆流（24）几乎不直接流入到辅助空气通道中，并且防止由逆流引起的误差，逆流（24）的存在由 使用最大值，正向气流（23）波形的最小值和平均值以及由前进气流（23）的增加引起的误差来校正平均值的振幅。