Oxygen sensor monitor apparatus
    2.
    发明授权
    Oxygen sensor monitor apparatus 失效
    氧传感器监测仪

    公开(公告)号:US4172432A

    公开(公告)日:1979-10-30

    申请号:US866875

    申请日:1978-01-04

    摘要: For use in association with a fuel mixture preparation system of an internal combustion engine which uses closed-loop control based on exhaust chemistry as determined by an oxygen sensor, there is described a circuit which monitors the operational readiness of the oxygen sensor on the basis of its internal resistance. The measurement takes place in a bridge circuit which is supplied with current whenever the sensor is non-operative but which becomes inactive when the sensor is at normal temperatures. The bridge voltages are fed to a comparator which generates an average output value when the oxygen sensor is not yet ready for operation and this average signal is processed in an integrator for final control of the fuel-air mixture.

    摘要翻译: 与使用由氧传感器确定的基于排气化学的闭环控制的内燃机的燃料混合物制备系统相关联地使用,描述了一种基于氧传感器监测氧传感器的操作准备情况的电路 其内阻。 该测量发生在桥接电路中,只要传感器处于非操作状态,当电流传感器处于常温下时,该电路将被提供电流。 当氧传感器尚未准备好进行操作时,桥电压被馈送到比较器,该比较器产生平均输出值,并且在积分器中处理该平均信号以最终控制燃料 - 空气混合物。

    Protective system for intermittently operating semiconductor switch
    3.
    发明授权
    Protective system for intermittently operating semiconductor switch 失效
    间歇运行半导体开关的保护系统

    公开(公告)号:US4016459A

    公开(公告)日:1977-04-05

    申请号:US604007

    申请日:1975-08-12

    摘要: A cyclical ON-OFF control signal is generated with a predetermined duty cycle to energize a load through a semi-conductor switch; a trouble signal is generated, for example by sensing voltage across the load, across the switch, temperature or the like, and, when the trouble signal exceeds a certain threshold (as determined, for example, by comparing the trouble signal with a reference in a differentially connected operational amplifier), the ON-signal to gate the switch ON is interrupted; and an OFF cycle of the cyclical generating means is started; if the trouble signal disappears, the normal cyclical repetition rate continues. A minimum interruption time is, however, provided determined by the OFF period of the cyclical generator and/or circuit components.

    摘要翻译: 以预定的占空比产生周期性的ON-OFF控制信号,以通过半导体开关给负载供电; 产生故障信号,例如通过感测负载两端的电压,跨开关温度等产生故障信号,并且当故障信号超过某个阈值时(例如,通过将故障信号与参考值相比较来确定 一个差分连接的运算放大器),导通开关导通信号被中断; 并且循环发生装置的OFF周期开始; 如果故障信号消失,则继续正常的循环重复率。 然而,最小中断时间由循环发生器和/或电路部件的关闭周期确定。

    Dynamoelectric machine with reduced armature reaction
    4.
    发明授权
    Dynamoelectric machine with reduced armature reaction 失效
    减少电枢反应的发电机

    公开(公告)号:US4249099A

    公开(公告)日:1981-02-03

    申请号:US949211

    申请日:1978-10-06

    IPC分类号: H02K1/14 H02K1/24 H01J17/04

    摘要: Armature reaction in a dynamo is reduced by constructing the main pole structure and/or the commutating pole structure with a plurality of iron lamina arranged parallel to the axis of rotation of the dynamo. The iron lamina are separated from each other by nonmagnetic or magnetically weak material of a predetermined thickness designed to cause a predetermined minimum but high reluctance to be offered to flux generated in the main or commutating pole structure as a result of armature current. The core of each pole may be split into a first and second core half at the root and in the direction of the axis of rotation. Each core half has a larger portion which extends to the adjacent core half of the neighboring pole, thereby forming a yoke. A smaller portion of each core half extends into the air gap between poles and, together with the corresponding portion of the core half of the neighboring pole which is similarly extended into the same air gap, forms a commutating pole. Each iron lamina may be constructed of a plurality of sublaminas which are glued together.

    摘要翻译: 通过用与发电机的旋转轴线平行设置的多个铁层构造主极结构和/或换向极结构来减少发电机中的电枢反应。 铁层由预定厚度的非磁性或磁性弱的材料彼此分开,其被设计成由于电枢电流而导致在主或整流极结构中产生的磁通量的预定最小值但是较高的磁阻。 每个极的芯可以在根部处和旋转轴线的方向上分裂成第一和第二芯部半部。 每个芯半部具有较大的部分,其延伸到相邻极的相邻芯部半部,从而形成轭。 每个芯半部分的较小部分延伸到磁极之间的空气间隙中,并且与邻近磁极的芯部半部的相应部分一起延伸到相同的气隙中,形成换向磁极。 每个铁层可以由粘合在一起的多个亚层叠体构成。