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    • 3. 发明授权
    • Alternator load control system
    • 发电机负载控制系统
    • US4629968A
    • 1986-12-16
    • US768677
    • 1985-08-23
    • Kenneth R. ButtsJoseph L. Wanamaker
    • Kenneth R. ButtsJoseph L. Wanamaker
    • H02P9/10
    • H02P9/107H02P2101/45
    • A load control system for controlling the field current of an alternating current generator and the idle speed control system for the engine that drives the generator. A voltage regulator senses the output voltage of the generator and controls field current by causing a semiconductor switch connected in series with the field winding to switch on and off in accordance with the magnitude of the sensed voltage. The voltage regulator is controlled to operate in a conventional manner when engine speed is higher than engine idle speed. When engine speed is in an idle speed range the duty cycle or on time of the semiconductor is controlled such that consecutive occurring on times are gradually increased to gradually increase field current when the output voltage of the generator is below a desired regulated value. The system operates to actuate an engine idle speed control system to increase the amount of fuel-air mixture supplied to the engine when the on times of the semiconductor switch are being gradually increased. In the event that engine speed decreases by a predetermined amount when the engine is operating in the idle speed range the on time or duty cycle of the semiconductor switch is reduced to a minimum to prevent engine stall.
    • 用于控制交流发电机的励磁电流的负载控制系统和用于驱动发电机的发动机的怠速控制系统。 电压调节器感测发电机的输出电压并通过使与场绕组串联连接的半导体开关根据感测电压的大小来导通和关断来控制励磁电流。 当发动机转速高于发动机怠速时,电压调节器被控制为以常规方式操作。 当发动机转速处于怠速转速范围时,控制半导体的占空比或导通时间,使得当发电机的输出电压低于期望的规定值时,连续发生的次数逐渐增加以逐渐增加励磁电流。 该系统用于致动发动机怠速控制系统,以在半导体开关的接通时间逐渐增加时增加供应给发动机的燃料 - 空气混合物的量。 当发动机在怠速转速范围内运转时,发动机转速降低规定量的情况下,将半导体开关的接通时间或占空比降至最小,以防止发动机停转。
    • 6. 发明授权
    • Oxygen sensor signal processing circuit for a closed loop air/fuel
mixture controller
    • 用于闭环空气/燃料混合物控制器的氧传感器信号处理电路
    • US4191151A
    • 1980-03-04
    • US888247
    • 1978-03-20
    • Joseph L. Wanamaker
    • Joseph L. Wanamaker
    • F02D41/14F02B3/00
    • F02D41/1479F02D41/148F02D41/1456
    • A processing circuit for use in an internal combustion engine closed loop air/fuel mixture controller is responsive to the output of an oxygen sensor exposed to the exhaust gas output of the internal combustion engine to provide a signal that indicates the sense of the deviation of the oxidizing/reducing conditions of the engine exhaust gases from a predetermined condition (usually stoichiometry). The processing circuit compares the output signal from the oxygen sensor with a pair of reference levels to provide the signal that indicates the sense of the deviation of the condition of the exhaust gases from the predetermined condition and which is independent of the effects of the absolute levels of the oxygen sensor and independent of the variance between the sensor response to changing air/fuel ratios in one direction and to sensor response to changing air/fuel ratios in the opposite direction.
    • 用于内燃机闭环空气/燃料混合物控制器的处理电路响应于暴露于内燃机的废气输出的氧传感器的输出,以提供一个信号,该信号指示 来自预定条件(通常为化学计量)的发动机废气的氧化/还原条件。 处理电路将来自氧传感器的输出信号与一对参考电平进行比较,以提供指示废气条件与预定条件的偏差感的信号,并且其独立于绝对电平的影响 的氧传感器,并且独立于传感器响应于一个方向上的空气/燃料比的变化的变化以及传感器对相反方向上改变的空气/燃料比的响应。