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    • 4. 发明授权
    • Flow rate meter with temperature dependent resistor
    • 具有温度依赖电阻的流量计
    • US4213335A
    • 1980-07-22
    • US913138
    • 1978-06-06
    • Cornelius PeterBernd Kraus
    • Cornelius PeterBernd Kraus
    • G01F1/68G01F1/692G01F1/696G01P5/12
    • G01F1/696G01F1/692
    • A flow rate meter for measuring the flow rate of a fluid medium, especially that of the air aspirated by an internal combustion engine. A hot wire or film is placed in the air stream and is made part of an electrical circuit powered by the output of a differential amplifier. The voltage drop across the resistor is monitored at the input of the differential amplifier where it is compared with fixed or compensated values. In order to reduce the effect that airborne particles, which are deposited on the hot wire or film, have on the measuring characteristics of the apparatus, the wire or film are shaped so that their leading edge constitutes an area much smaller than the surfaces which are substantially parallel to the stream lines.
    • 一种流量计,用于测量流体介质的流量,特别是由内燃机吸入的空气的流量。 热线或薄膜放置在空气流中,并被制成由差分放大器的输出端供电的电路的一部分。 在差分放大器的输入端监测电阻上的电压降,并将其与固定或补偿值进行比较。 为了减少沉积在热丝或薄膜上的空气中的颗粒对设备的测量特性的影响,导线或薄膜的形状使其前缘构成的面积远小于 基本上平行于流线。
    • 5. 发明授权
    • Flow rate meter with temperature-dependent resistor
    • 带温度依赖电阻的流量计
    • US4210016A
    • 1980-07-01
    • US935056
    • 1978-08-18
    • Cornelius PeterBernd Kraus
    • Cornelius PeterBernd Kraus
    • G01F1/68G01F1/40G01F1/684G01F15/00
    • G01F1/6842G01F1/40G01F15/00
    • A flow rate measuring device, especially for measuring the flow rate of incoming fresh air in the induction tube of an internal combustion engine in which a temperature-dependent sensor, e.g. a resistor, is exposed to the air flow while the current through the sensor is controlled and monitored to obtain a signal related to the air flow rate. In order to prevent damage to the sensor from high-temperature flame fronts due to backfiring and also from inadvertent mechanical contact with tools, etc., there is provided at least one protective element downstream of the sensor and possibly another element upstream. The protective element is a plate-like barrier permitting essentially unimpeded air flow. The pattern of the element may be a grid or sieve, a honeycomb pattern or a plurality of parallel tubes.
    • 一种流量测量装置,特别是用于测量内燃机的感应管中进入的新鲜空气的流量的流量测量装置,其中依赖于温度的传感器,例如, 电阻器暴露于空气流中,同时控制和监测通过传感器的电流以获得与空气流量相关的信号。 为了防止由于背热引起的高温火焰前沿传感器的损坏以及由于与工具等的无意的机械接触而在传感器的下游和可能的另一个元件上游提供至少一个保护元件。 保护性元件是板状屏障,其基本上不受阻碍的空气流动。 元件的图案可以是网格或筛子,蜂窝图案或多个平行管。
    • 7. 发明授权
    • Apparatus for temperature control of a resistor used for measurement
purposes, especially in internal combustion engines
    • 用于测量目的的电阻器的温度控制装置,特别是在内燃机中
    • US4357829A
    • 1982-11-09
    • US97245
    • 1979-11-26
    • Bernd KrausOtto Glockler
    • Bernd KrausOtto Glockler
    • G01F1/68F02D41/18G01F1/698G01F15/12G01P5/12
    • F02D41/187G01F1/698G01F1/6983
    • An apparatus for the temperature control of a resistor used for measurement purposes, in particular, in combination with air flow rate measurement purposes, in particular, in combination with air flow rate measuring devices in internal combustion engines for a vehicle wherein the temperature of the resistor with current flowing through it is regulated during the measurement phase and in particular, operational states of the system provided with the apparatus and/or at particular times, the flow of current through the resistor is increased for the purpose of burning off dirt particles, which would falsify the measurement result, from the surface of the resistor which is formed, for example, as a hot wire. The apparatus includes a memory for picking up a signal such as whether a particular engine temperature is present at the beginning of one operational cycle or not and when this temperature is present, a red-hot heating procedure is omitted when the engine is subsequently turned off. In addition, the increase in current for initiating the red-hot heating procedure may also be controlled in accordance with operational duration and driving distance of the vehicle and in accordance with time.
    • 用于测量目的的电阻器的温度控制装置,特别是结合空气流速测量目的,特别是结合用于车辆的内燃机中的空气流量测量装置,其中电阻器的温度 流过其中的电流在测量阶段被调节,特别是在设备和/或特定时间提供的系统的操作状态下,增加了通过电阻器的电流的流动,以便消除污垢颗粒 将从例如作为热丝形成的电阻器的表面伪造测量结果。 该装置包括用于拾取信号的存储器,例如在一个操作周期的开始是否存在特定发动机温度,并且当存在该温度时,当发动机随后关闭时,省略红热加热过程 。 此外,还可以根据车辆的操作持续时间和驾驶距离并根据时间来控制用于启动红热加热程序的电流的增加。
    • 8. 发明授权
    • Flow rate meter with temperature dependent resistor
    • 具有温度依赖电阻的流量计
    • US4304130A
    • 1981-12-08
    • US141039
    • 1980-04-16
    • Cornelius PeterBernd Kraus
    • Cornelius PeterBernd Kraus
    • G01F1/68G01F1/692G01F1/696G01P5/12
    • G01F1/696G01F1/692
    • A flow rate meter for measuring the flow rate of a fluid medium, especially that of the air aspirated by an internal combustion engine. A hot wire or film is placed in the air stream and is made part of an electrical circuit powered by the output of a differential amplifier. The voltage drop across the resistor is monitored at the input of the differential amplifier where it is compared with fixed or compensated values. In order to reduce the effect that airborne particles, which are deposited on the hot wire or film, have on the measuring characteristics of the apparatus, the wire or film are shaped so that their leading edge constitutes an area much smaller than the surfaces which are substantially parallel to the stream lines.
    • 一种流量计,用于测量流体介质的流量,特别是由内燃机吸入的空气的流量。 热线或薄膜放置在空气流中,并被制成由差分放大器的输出端供电的电路的一部分。 在差分放大器的输入端监测电阻上的电压降,并将其与固定或补偿值进行比较。 为了减少沉积在热丝或薄膜上的空气中的颗粒对设备的测量特性的影响,导线或薄膜的形状使其前缘构成的面积远小于 基本上平行于流线。