Device for measuring the level of a liquid in a container
    1.
    发明授权
    Device for measuring the level of a liquid in a container 失效
    用于测量容器中液体水平的装置

    公开(公告)号:US4299126A

    公开(公告)日:1981-11-10

    申请号:US75670

    申请日:1979-09-13

    IPC分类号: G01F23/24

    CPC分类号: G01F23/246

    摘要: A device for measuring the fill level in a container at least partially filled with a liquid, particularly for determining the liquid level in a fuel tank, in which a measuring resistor, comprising a metallic resistance layer having a great temperature coefficient of the specific resistance is carried by a carrier foil. The portion of the resistance layer disposed in the liquid remains cold, while that portion above the liquid is at a higher temperature, whereby the difference between the present resistance and that of an empty tank is proportional to the fill level within the tank. The change of resistance preferably is measured in connection with that of a comparator resistor which is not heated and compensates for temperature influence etc. An influence on the measurement due to convection in the fuel tank is prevented by means of covering sheets which are spaced a small distance from the resistors by means of suitable spacing strips.

    摘要翻译: 一种用于测量至少部分地充满液体的容器中的填充液位的装置,特别是用于确定燃料箱中的液位,其中包括具有大电阻温度系数的金属电阻层的测量电阻器是 由载体箔携带。 设置在液体中的电阻层的部分保持冷,而液体上方的部分处于较高的温度,由此当前电阻与空罐的电阻之间的差与罐内的填充量成比例。 电阻的变化优选与未加热的比较电阻器的电阻值相对应地进行测量,并且补偿温度影响等。由于通过覆盖片材间隔小的方式防止了由于燃料箱中的对流而对测量的影响 通过合适的间隔条与电阻器的距离。

    Electronic magneto ignition for internal combustion engines
    2.
    发明授权
    Electronic magneto ignition for internal combustion engines 失效
    内燃机电子点火

    公开(公告)号:US4173963A

    公开(公告)日:1979-11-13

    申请号:US800742

    申请日:1977-05-26

    摘要: An electronic magneto ignition for internal combustion engines has a permanent magnet mounted on the engine fly wheel and rotating therewith. A magnetic field coil has a primary winding and a secondary winding in which ignition current and ignition voltage, respectively, are produced during the passage of the permanent magnet. A switching transistor is connected in parallel with the primary winding and in parallel with a diode poled opposite to the emitter-collector path of the transistor. An electronic control circuit blocks the switching transistor at the desired ignition time so that the primary circuit is interrupted and the high voltage for the combustion of the fuel is produced in the secondary winding. In the electronic control circuit, a parallel circuit consisting of a first control coil, which has a resistor in series therewith, and a thyristor is connected from the base to the emitter of the switching transistor. Another resistor is connected from the collector of the switching transistor, as a feedback resistor, to the control electrode of the thyristor. A second control coil has a potentiometer connected in parallel, the potentiometer having a movable tap so that a portion of the voltage applied to the resistor is fed to the control electrode of the thyristor. The first control coil is arranged at an angle from the ignition coil and the second control coil is arranged at an angle from the first control coil, as viewed in the direction of rotation of the fly wheel.

    摘要翻译: 用于内燃机的电子点火器具有安装在发动机飞轮上并与其一起旋转的永磁体。 磁场线圈具有初级绕组和次级绕组,其中分别在永磁体通过期间产生点火电流和点火电压。 开关晶体管与初级绕组并联并且与与晶体管的发射极 - 集电极路径相反的极化二极管并联连接。 电子控制电路在期望的点火时间阻断开关晶体管,使得初级电路被中断,并且在次级绕组中产生用于燃料燃烧的高电压。 在电子控制电路中,由开关晶体管的基极与发射极连接由与其串联的电阻器的第一控制线圈和晶闸管构成的并联电路。 另一个电阻器作为反馈电阻器从开关晶体管的集电极连接到晶闸管的控制电极。 第二控制线圈具有并联连接的电位计,电位器具有可移动抽头,使得施加到电阻器的电压的一部分馈送到晶闸管的控制电极。 第一控制线圈与点火线圈成一角度配置,并且第二控制线圈以与飞轮的旋转方向相同的方式与第一控制线圈成一角度配置。

    FET gating circuit for switching electrical loads
    3.
    发明授权
    FET gating circuit for switching electrical loads 失效
    用于切换电气负载的FET门控电路

    公开(公告)号:US4694207A

    公开(公告)日:1987-09-15

    申请号:US827653

    申请日:1986-02-07

    CPC分类号: H03K17/693

    摘要: Method of switching electrical loads having one side thereof at reference potential and being connected in d-c networks with n-channel MOS switching transistors includes applying a control voltage which is at least equal to a sum of voltages of a respective d-c network plus a voltage of the gate-source path of a respective switching transistor to a gate of the respective switching transistor; and device for performing the method.

    摘要翻译: 将具有一侧的电负载切换为参考电位并且在具有n沟道MOS开关晶体管的直流网络中连接的电负载的方法包括施加至少等于相应直流网络的电压和电压相加的控制电压 相应开关晶体管的栅极 - 源极路径到相应开关晶体管的栅极; 以及用于执行该方法的装置。

    Method and device for entering coordinates into an automatic navigation
system for vehicles
    4.
    发明授权
    Method and device for entering coordinates into an automatic navigation system for vehicles 失效
    将坐标输入车辆自动导航系统的方法和装置

    公开(公告)号:US4668858A

    公开(公告)日:1987-05-26

    申请号:US481645

    申请日:1983-04-04

    CPC分类号: G01C21/3623

    摘要: Method for entering coordinates of starting and destination points into a navigation system for vehicles operating according to the principle of dead reckoning navigation, which includes representing the coordinates in a pattern with a bar code, and setting the coordinates into the navigation system with an optical or magnetic code reader, and a device for carrying out the method.

    摘要翻译: 将起点和目的地点的坐标输入到根据航位推算导航原理进行操作的车辆的导航系统的方法,其包括用条形码表示模式中的坐标,以及将坐标设置为导航系统中的光学或 磁代码读取器和用于执行该方法的装置。