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热词
    • 5. 发明授权
    • Breakerless trigger circuit with variable dwell for ignition systems
    • 用于点火系统的具有可变容量的无断开触发电路
    • US3797471A
    • 1974-03-19
    • US3797471D
    • 1972-04-14
    • MOTOROLA INC
    • SCHUETTE G
    • F02P3/045F02P3/055F02P3/02
    • F02P3/0556F02P3/0453
    • A triggering circuit for an ignition system to develop electric signals which correspond to the closing and opening of breaker points. A transistor which controls the current flow through the primary winding of a standard ignition coil is in a quiescent off condition when the engine is not being cranked or turning. Only upon cranking of the engine will the transistor be rendered conductive for a period of time, corresponding to the dwell angle of the system, to apply given-width pulses to the primary winding of the ignition coil. The termination of the pulses produces spark voltage at the secondary winding of the ignition coil. Means are provided to automatically increase the dwell angle of the system at a predetermined engine speed.
    • 用于点火系统的触发电路,用于产生对应于断路器点的闭合和断开的电信号。 控制通过标准点火线圈的初级绕组的电流的晶体管在发动机未被起动或转动时处于静止状态。 只有在发动机起动时,晶体管将导通一段时间,对应于系统的驻留角度,才能对点火线圈的初级绕组施加给定宽度的脉冲。 脉冲的终止在点火线圈的次级绕组产生火花电压。 提供装置以在预定的发动机转速下自动增加系统的驻留角度。