Thermal type flow measuring instrument and temperature-error correcting apparatus thereof
    1.
    发明公开
    Thermal type flow measuring instrument and temperature-error correcting apparatus thereof 失效
    Thermische Vorrichtung zum Messen derStrömungundTemperaturfehlerkorrekturgerätdafür

    公开(公告)号:EP0890827A1

    公开(公告)日:1999-01-13

    申请号:EP98112397.9

    申请日:1998-07-03

    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引起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 type flow measuring instrument and temperature-error correcting apparatus thereof
    2.
    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

    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%。

    Method and apparatus for controlling throttle valve in internal combustion engine
    4.
    发明公开
    Method and apparatus for controlling throttle valve in internal combustion engine 失效
    用于控制内燃机中的节流阀的方法和装置

    公开(公告)号:EP0336340A3

    公开(公告)日:1990-07-04

    申请号:EP89105815.8

    申请日:1989-04-03

    IPC分类号: F02D11/10

    摘要: Disclosed is a method and apparatus for controlling a throttle valve (8) driven by a D.C. motor (3) in an internal combustion engine (1), in which the D.C. motor (3) is driven until a valve position sensor (4) detecting the angular position of the throttle valve generates an output signal which coincides with the output signal of an accelerator pedal sensor (6) detecting the amount of depression of an accelerator pedal of a vehicle. The value (i₁) of motor current required for causing very slight displacement of a return spring (12) provided for returning the throttle valve toward a pre­determined angular position is utilized for automatically compensating various factors of fluctuation attributable to friction, inertia, etc. of means (10, 12) driving the throttle valve. A small-capacity microprocessor is used to control the D.C. motor so that the throttle valve can operate with high accuracy and high-speed response capability without being adversely affected by changes in the operating condition as well as secular variations.

    Air flow measurement apparatus
    5.
    发明公开
    Air flow measurement apparatus 审中-公开
    空气流量计

    公开(公告)号:EP0924495A3

    公开(公告)日:2000-07-26

    申请号:EP98124279.5

    申请日:1998-12-18

    申请人: Hitachi, Ltd.

    摘要: In a heating resistor type air flow measurement apparatus, a flow correction data is read out from a primary memory and stored in a secondary memory, and then an air flow signal is calibrated by the flow correction data stored in the secondary memory, when starting the apparatus up. The apparatus has a diagnosis unit (33) for determining whether or not the flow correction data stored in the primary memory is correct, wherein the determination processing of the flow correction data by the diagnosis unit (33) is performed at during any time at least including the starting-up point of the apparatus. There is no fear that the engine control based on the abnormal flow correction data continues.

    Apparatus and method for diagnosing an internal combustion engine
    6.
    发明公开
    Apparatus and method for diagnosing an internal combustion engine 审中-公开
    Vorrichtung und Verfahren zur Diagnose einer Brennkraftmaschine

    公开(公告)号:EP1020623A2

    公开(公告)日:2000-07-19

    申请号:EP00100148.6

    申请日:2000-01-10

    申请人: Hitachi, Ltd.

    IPC分类号: F02D13/02 F01L9/04 F02D41/22

    摘要: By employing command value signals for controlling the opening timing of an exhaust valve (11) or an intake valve (10) and means (20) for measuring flow rates of an intake air of a flow direction which flows through an intake manifold (19) of an internal combustion engine (1), an air flow rate corresponding to the command value signal is measured. A valve mechanism (40, 41) includes the intake valve (10) and the exhaust valve (11) for each cylinder (1a) of the internal combustion engine (1) and is controlled by a valve control means (30) for controlling the valve mechanism (40, 41). A failure diagnosis of an operating status of the valve mechanism (40, 41) can be performed.

    摘要翻译: 通过采用用于控制排气门(11)或进气门(10)的打开正时的指令值信号和用于测量流过进气歧管(19)的流动方向的进气流量的装置(20) 的内燃机(1),测量与指令值信号对应的空气流量。 阀机构(40,41)包括用于内燃机(1)的每个气缸(1a)的进气门(10)和排气阀(11),并由阀控制装置(30)控制,用于控制 阀机构(40,41)。 可以执行阀机构(40,41)的运行状态的故障诊断。

    Air flow measurement apparatus
    7.
    发明公开
    Air flow measurement apparatus 审中-公开
    LuftDurchflussmessgerät

    公开(公告)号:EP0924495A2

    公开(公告)日:1999-06-23

    申请号:EP98124279.5

    申请日:1998-12-18

    申请人: Hitachi, Ltd.

    IPC分类号: G01F1/69

    摘要: In a heating resistor type air flow measurement apparatus, a flow correction data is read out from a primary memory and stored in a secondary memory, and then an air flow signal is calibrated by the flow correction data stored in the secondary memory, when starting the apparatus up.
    The apparatus has a diagnosis unit (33) for determining whether or not the flow correction data stored in the primary memory is correct, wherein the determination processing of the flow correction data by the diagnosis unit (33) is performed at during any time at least including the starting-up point of the apparatus.
    There is no fear that the engine control based on the abnormal flow correction data continues.

    摘要翻译: 在加热电阻式空气流量测量装置中,从初级存储器读出流量校正数据并存储在辅助存储器中,然后通过存储在辅助存储器中的流量校正数据来校准气流信号,当启动 装置起来。 该设备具有用于确定存储在主存储器中的流量校正数据是否正确的诊断单元(33),其中诊断单元(33)的流量校正数据的确定处理在任何时间至少 包括设备的启动点。 不用担心基于异常流量校正数据的发动机控制继续进行。

    Method and apparatus for controlling throttle valve in internal combustion engine
    8.
    发明公开
    Method and apparatus for controlling throttle valve in internal combustion engine 失效
    用于控制内燃机的节流阀的方法和装置。

    公开(公告)号:EP0336340A2

    公开(公告)日:1989-10-11

    申请号:EP89105815.8

    申请日:1989-04-03

    IPC分类号: F02D11/10

    摘要: Disclosed is a method and apparatus for controlling a throttle valve (8) driven by a D.C. motor (3) in an internal combustion engine (1), in which the D.C. motor (3) is driven until a valve position sensor (4) detecting the angular position of the throttle valve generates an output signal which coincides with the output signal of an accelerator pedal sensor (6) detecting the amount of depression of an accelerator pedal of a vehicle. The value (i₁) of motor current required for causing very slight displacement of a return spring (12) provided for returning the throttle valve toward a pre­determined angular position is utilized for automatically compensating various factors of fluctuation attributable to friction, inertia, etc. of means (10, 12) driving the throttle valve. A small-capacity microprocessor is used to control the D.C. motor so that the throttle valve can operate with high accuracy and high-speed response capability without being adversely affected by changes in the operating condition as well as secular variations.

    摘要翻译: 本发明公开了用于控制由直流驱动的节流阀(8)的方法和装置 上内燃发动机(1),其中直流电动机(3) 电动机(3)被驱动,直到阀位置传感器(4)检测输出信号的节流阀代速率,其与加速踏板传感器的输出信号一致(6)检测的加速器踏板的踏下量的角度位置 车辆。 马达电流的用于使设置用于朝向预定角位置返回节流阀的复位弹簧的非常轻微的位移(12)所要求的值(I1)被用于自动补偿波动的各种因素属性能够摩擦,惯性,等等的 装置(10,12)驱动所述节流阀。 一个小容量的微处理器,用于控制所述直流 马达所以没有节流阀可以在不通过在运转条件的变化以及长期变化的不利影响,精度高,高速响应能力运转。