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15 条记录 (耗时 0.031 秒)

    Flow sensor
    3.
    发明授权
    Flow sensor 失效
    流量传感器

    公开(公告)号：US5369994A

    公开(公告)日：1994-12-06

    申请号：US94218

    申请日：1993-07-21

    申请人： Hans Hecht ,  Josef Kleinhans ,  Rudolf Sauer ,  Eckart Reihlen ,  Ulrich Kuhn

    发明人： Hans Hecht ,  Josef Kleinhans ,  Rudolf Sauer ,  Eckart Reihlen ,  Ulrich Kuhn

    IPC分类号： G01F1/68 ,  G01D3/036 ,  G01F1/684 ,  G01F1/688 ,  G01F1/692 ,  G01F1/698 ,  G01F1/699 ,  G01F15/04 ,  G01P1/00

    CPC分类号： G01D3/0365 ,  G01F1/6845 ,  G01F1/698 ,  G01F1/699 ,  G01P1/006

    摘要： The invention is directed to a flow sensor having a heater, two temperature measuring sensors, a heater temperature sensor and a medium temperature sensor. A control circuit is provided which controls the overtemperature of the heater in dependence upon the temperature of the flowing medium. With this arrangement, the influence of the temperature dependency of the following on the sensor characteristic are compensated: viscosity, thermal conductance and thermal capacity of the medium. The relationship between the heater temperature and the temperature of the medium is adjusted in a slightly nonlinear manner by means of special evaluation circuits. In this way, a further improvement of the temperature compensation is obtained.

    摘要翻译： 本发明涉及一种具有加热器，两个温度测量传感器，加热器温度传感器和中等温度传感器的流量传感器。 提供控制电路，其根据流动介质的温度来控制加热器的过热。 通过这种布置，补偿以下的温度依赖性对传感器特性的影响：介质的粘度，热导率和热容量。 加热器温度与介质温度之间的关系通过特殊评估电路以微不足道的方式进行调节。 以这种方式，可以进一步提高温度补偿。

    Method and apparatus for determining the flow rate of a flowing fluid mass
    6.
    发明授权
    Method and apparatus for determining the flow rate of a flowing fluid mass 失效
    用于确定流动流体质量流量的方法和装置

    公开(公告)号：US5193388A

    公开(公告)日：1993-03-16

    申请号：US604756

    申请日：1990-10-26

    申请人： Josef Kleinhans

    发明人： Josef Kleinhans

    IPC分类号： G01F1/68 ,  F02D41/18 ,  F02D45/00 ,  G01F1/698 ,  G01F1/699 ,  G05D23/24

    CPC分类号： F02D41/187 ,  G01F1/6986 ,  G01F1/699 ,  G05D23/1913 ,  G05D23/24

    摘要： A method and apparatus controls the temperature of a precision resistor and, in turn, measures the flow rate of a flowing fluid mass. The precision resistor is a hot wire or hot film of an air mass meter of an internal combustion engine of a motor vehicle. Through timed current flow, the operating temperature of the precision resistor is maintained at a higher temperature than the temperature of the flowing fluid mass. The timing of the electric current for maintaining the operating temperature of the precision resistor is controlled based on the magnitude of the gating voltage supplied to heat the precision resistor.

    摘要翻译： 一种方法和装置控制精密电阻器的温度，并进而测量流动流体质量的流量。 精密电阻是汽车内燃机的空气质量计的热丝或热膜。 通过定时电流，精密电阻器的工作温度保持在比流动的流体质量的温度更高的温度。 用于保持精密电阻器的工作温度的电流的时序是基于提供给加热精密电阻器的选通电压的大小来控制的。

    Circuit arrangement with a flow probe operated in a bridge circuit
    7.
    发明授权
    Circuit arrangement with a flow probe operated in a bridge circuit 失效
    在电路中运行的流量探头的电路布置

    公开(公告)号：US5063352A

    公开(公告)日：1991-11-05

    申请号：US473949

    申请日：1990-02-09

    申请人： Josef Kleinhans

    发明人： Josef Kleinhans

    IPC分类号： G01F1/68 ,  G01F1/698 ,  G01P5/12 ,  G01R17/00

    CPC分类号： G01P5/12 ,  G01F1/6986 ,  G01R17/00

    摘要： In the case of a circuit arrangement with a flow probe operated in a bridge circuit, a device for determining bridge balance, which controls a triggering circuit which can be supplied by an oscillator and controls a switching device for the power supply of the bridge circuit, the oscillator has an operating frequency which is at least approximately inversely proportional to the square of the operating voltage of the power supply.

    摘要翻译： PCT No.PCT / DE88 / 00761 Sec。 371日期1990年2月9日 102（e）1990年2月9日PCT PCT公布1988年12月13日PCT公布。 公开号WO89 / 07242 日本1989年8月10日。在具有在桥接电路中操作的流量探针的电路装置的情况下，用于确定电桥平衡的装置，其控制可由振荡器提供的触发电路并控制开关装置 电桥电路的电源，振荡器的工作频率至少与电源工作电压的平方成反比。

    Device for reducing noise during potentiometer evaluation
    8.
    发明授权
    Device for reducing noise during potentiometer evaluation 失效
    在电位器评估期间减少噪声的装置

    公开(公告)号：US5165272A

    公开(公告)日：1992-11-24

    申请号：US697877

    申请日：1991-05-09

    申请人： Josef Kleinhans ,  Rudolf Sauer ,  Heinrich Steinruecken ,  Armin Witzig

    发明人： Josef Kleinhans ,  Rudolf Sauer ,  Heinrich Steinruecken ,  Armin Witzig

    IPC分类号： F02D11/10 ,  F02D45/00 ,  G01B7/30 ,  H03F1/26 ,  H03H11/24

    CPC分类号： H03H11/24

    摘要： A device for noise peak suppression during a potentiometer evaluation has a potentiometer located between a reference voltage and mass and having a slider with a slider output, a control device adapted to receive a signal from the slider output of the potentiometer, and an amplifying unit located between the potentiometer and the control device so that a signal picked up from the slider output is amplified in the amplfying unit before being supplied to the control device.

    摘要翻译： 在电位计评估期间用于噪声峰值抑制的装置具有位于参考电压和质量之间的电位计，并且具有滑块和滑块输出的滑块，适于接收来自电位计的滑块输出的信号的控制装置和位于 在电位器和控制装置之间，使得从滑块输出拾取的信号在放大单元中被放大到被提供给控制装置之前。

    Inductive position indicator using two oscillators with periodically interchanged inductors
    9.
    发明授权
    Inductive position indicator using two oscillators with periodically interchanged inductors 失效
    使用两个振荡器与周期性交流电感器的电感位置指示器

    公开(公告)号：US5079523A

    公开(公告)日：1992-01-07

    申请号：US647450

    申请日：1991-01-29

    申请人： Josef Kleinhans

    发明人： Josef Kleinhans

    IPC分类号： G01B7/30 ,  G01B7/00 ,  G01D5/22

    CPC分类号： G01D5/2225

    摘要： An inductive position indicator in particular for determining an angular position of a throttle flap of an internal combustion engine comprises an oscillator circuit, reversible oscillating circuit branches, a position detecting element cooperating with the oscillating circuit branches for position-dependent change of their inherent frequencies, and an evaluating circuit which determines the position from the current inherent frequencies, the oscillator circuit having two oscillators which in one reverse position cooperate with an associated first respectively second oscillating circuit branch and in another reverse position oscillating circuit elements of the first and second oscillating circuit branches are exchanged with one another so that each oscillator cooperates with a third respectively a fourth oscillating circuit branch of another inherent frequency.

    摘要翻译： 特别地，用于确定内燃机的节气门瓣的角位置的感应位置指示器包括振荡器电路，可逆振荡电路分支，与振荡电路分支配合的位置检测元件，用于其固有频率的位置相关的改变， 以及评估电路，其从当前固有频率确定位置，所述振荡器电路具有两个振荡器，所述两个振荡器在一个反向位置中与相关联的第一分别第二振荡电路支路配合，并且在另一反向位置中与所述第一和第二振荡电路的振荡电路元件 分支彼此交换，使得每个振荡器与另一固有频率的第三个第四振荡电路分支相配合。

    Method and apparatus for measuring the flow rate of a flowing medium
    10.
    发明授权
    Method and apparatus for measuring the flow rate of a flowing medium 失效
    测量流动介质流量的方法和装置

    公开(公告)号：US4658641A

    公开(公告)日：1987-04-21

    申请号：US771991

    申请日：1985-09-03

    申请人： Ulrich Drews ,  Josef Kleinhans

    发明人： Ulrich Drews ,  Josef Kleinhans

    IPC分类号： G01F1/68 ,  G01F1/698 ,  G01M19/00

    CPC分类号： G01F1/698

    摘要： A method and an apparatus are disclosed for determining the flow rate of a flowing medium such as the amount of air supplied to an internal combustion engine. The apparatus includes at least one temperature-dependent resistor arranged in the flowing medium. For this purpose, an arrangement is provided which applies a quantity dependent on at least the flow rate to the temperature-dependent resistor. The method includes the step of abruptly reducing the flow rate dependent quantity to a value such as approximately zero in the presence of a flow-rate value lying below a predeterminable threshold value. Because the reduction takes place only for a predetermined period of time, normal operation will be resumed automatically when the flow rate rises again. A hot-wire air-flow sensor is arranged in the intake pipe of an internal combustion engine and the output signals thereof are a measure of the amount of air inducted by the internal combustion engine.

    摘要翻译： 公开了一种用于确定流动介质的流量的方法和装置，例如供给内燃机的空气量。 该装置包括布置在流动介质中的至少一个温度依赖电阻器。 为此，提供一种将至少依赖于温度的电阻器的流量施加量的布置。 该方法包括在存在低于可预定阈值的流量值的情况下将流量相关量突然降低到诸如大约为零的值的步骤。 因为减少仅在预定时间段内进行，所以当流量再次升高时，将自动恢复正常操作。 在内燃机的进气管中设置有热线气流传感器，其输出信号是由内燃机引导的空气量的量度。