Ignition coil with overvoltage protection connected to the secondary
winding of the ignition coil
    1.
    发明授权
    Ignition coil with overvoltage protection connected to the secondary winding of the ignition coil 失效
    具有过电压保护的点火线圈连接到点火线圈的次级绕组

    公开(公告)号:US4351310A

    公开(公告)日:1982-09-28

    申请号:US193186

    申请日:1980-10-01

    CPC分类号: F02P3/0552

    摘要: An overvoltage protection circuit is galvanically, directly connected across at least part of the secondary winding in the ignition system of an internal combustion engine. The input portion of the overvoltage protection circuit is a voltage divider preferably constituted by RC elements. The voltage at the tap of the voltage divider is applied to a Schmitt trigger. When the voltage across the secondary winding becomes excessively high, the Schmitt trigger output pulse triggers a monostable multivibrator whose output pulse in turn increases the conductivity of a transistor switch located in series with the primary. The increase in primary current tends to oppose further increases in primary and secondary voltages. Alternatively, the output from the multivibrator could be used to shorten the time of current flow in the primary winding in subsequent ignition time intervals or to completely block any subsequent ignition process.

    摘要翻译: 过电压保护电路电连接,直接连接在内燃机的点火系统中的次级绕组的至少一部分上。 过压保护电路的输入部分是优选由RC元件构成的分压器。 分压器抽头上的电压施加到施密特触发器。 当次级绕组两端的电压变得过高时,施密特触发器输出脉冲触发单稳态多谐振荡器,其输出脉冲又增加了与初级绕组串联的晶体管开关的电导率。 初级电流的增加往往反对一次和二次电压的进一步增加。 或者,多谐振荡器的输出可以用于缩短在随后的点火时间间隔中的初级绕组中的电流流动的时间,或者完全阻止任何随后的点火过程。

    Ignition system with improved temperature and voltage compensation
    2.
    发明授权
    Ignition system with improved temperature and voltage compensation 失效
    点火系统具有改善的温度和电压补偿

    公开(公告)号:US4253442A

    公开(公告)日:1981-03-03

    申请号:US60878

    申请日:1979-07-26

    CPC分类号: F02P3/051

    摘要: The voltage across a capacitor is changed in a first direction while the current in the primary winding of the ignition coil increases to a predetermined value less than the value required for ignition and is thereafter changed in a second direction until ignition takes place. The voltage across the capacitor is applied to the inverting input of a difference amplifier constituting a threshold stage controlling the initiation and termination of current flow through the ignition coil. The two changes are symmetrical when the engine speed remains constant. The residual voltage across the capacitor at the end of the second change is maintained until the start of the next subsequent first change, so that the time at which the threshold stage switches in, that is the time at which primary current starts to flow in the ignition coil changes as a function of the residual voltage in the capacitor.

    摘要翻译: 电容器两端的电压在第一方向上变化,同时点火线圈的初级绕组中的电流增加到小于点火所需值的预定值,然后在第二方向上改变直到发生点火。 电容器两端的电压被施加到构成阈值级的差分放大器的反相输入,该阈值级控制通过点火线圈的电流的启动和终止。 当发动机转速保持恒定时,两个变化是对称的。 在第二次变化结束时,电容器两端的剩余电压被维持直到下一个随后的第一次改变开始,使得阈值级切换的时间,即初级电流开始流过的时间 点火线圈根据电容器中的残余电压而变化。

    Ignition system with automatic increase in ignition energy during
acceleration
    3.
    发明授权
    Ignition system with automatic increase in ignition energy during acceleration 失效
    点火系统加速时自动增加点火能量

    公开(公告)号:US4267813A

    公开(公告)日:1981-05-19

    申请号:US16509

    申请日:1979-03-01

    IPC分类号: F02P5/155 F02P3/04

    CPC分类号: F02P5/1553 Y02T10/46

    摘要: When the engine accelerates, the angle over which the ignition switch is closed prior to initiating the spark is automatically increased. Acceleration of the engine is detected by a comparator which compares the value of a speed-dependent signal in sequential cycles and initiate closure of the ignition switch if a predetermined difference is exceeded between the so-compared signals at a predetermined time in the cycle. Under static or decelerating conditions, the speed-dependent signal is compared, in each cycle, to the output of an integrator circuit. The integrator circuit integrates in a first direction at a first rate up to the above-mentioned predetermined time in the cycle and in the opposite direction at a second predetermined rate for the remainder of the cycle. The average value of the integrator output signal corresponds to the engine speed. When the so-compared signals are equal, the second comparator furnishes an output signal which closes the ignition switch. The integrating rates may be varied as a function of operating parameters of the engine.

    摘要翻译: 当发动机加速时,在启动火花之前点火开关关闭的角度自动增加。 通过比较器来检测发动机的加速度,该比较器在顺序循环中比较速度相关信号的值,并且如果在该周期中的预定时间内超过如此比较的信号之间的预定差异,则启动点火开关的闭合。 在静态或减速条件下,速度相关信号在每个周期中与积分器电路的输出进行比较。 积分器电路在第一速率下以第一速率在该周期中以上述预定时间积累第一方向,并且在该周期的其余部分以第二预定速率向相反方向积分。 积分器输出信号的平均值对应于发动机转速。 当比较信号相等时,第二比较器提供关闭点火开关的输出信号。 积分率可以根据发动机的操作参数而变化。

    Supply voltage variation compensated ignition system for an internal
combustion engine
    6.
    发明授权
    Supply voltage variation compensated ignition system for an internal combustion engine 失效
    内燃机电源电压变化补偿点火系统

    公开(公告)号:US4185603A

    公开(公告)日:1980-01-29

    申请号:US865578

    申请日:1977-12-29

    CPC分类号: F02P3/0552 F02P3/0453

    摘要: To operate an ignition control transistor, connected into the primary ignition coil under minimum saturation condition regardless of voltage level of the supply voltage, delivered, for example, from the battery of an automotive vehicle, at least one timing circuit is connected to the voltage supply to have a timing interval which varies as a function of supply voltage, the timing interval controlling the duration of current flow through the transistor as a function of supply voltage so that the transistor will be conductive for the required time to store magnetic energy in the coil, though not for an excessively long period of time regardless of the level of supply voltage within the limits normally experienced in automotive ignition systems.

    摘要翻译: 为了操作点火控制晶体管,在最小饱和条件下连接到初级点火线圈中,而不管例如从汽车的电池输送的电源电压的电压电平,至少一个定时电路连接到电压源 具有作为电源电压的函数而变化的定时间隔,定时间隔控制作为电源电压的函数的电流流过晶体管的电流的持续时间,使得晶体管将导通所需的时间以将磁能存储在线圈中 尽管不是过长的时间段,而不管汽车点火系统中通常经历的极限范围内的电源电压如何。

    Ignition system for internal combustion engines with tapped ignition coil
    7.
    发明授权
    Ignition system for internal combustion engines with tapped ignition coil 失效
    带点火线圈的内燃机点火系统

    公开(公告)号:US4117818A

    公开(公告)日:1978-10-03

    申请号:US704116

    申请日:1976-07-09

    CPC分类号: F02P3/051 F02P3/0838

    摘要: The primary of the ignition coil is tapped to provide two partial primary portions which are serially connected; during an initial current flow, only one partial portion has current flowing therethrough, the other partial portion being short-circuited. When the current through the coil has risen to a predetermined level, as sensed by current flow through a sensing resistor, the short circuit across the second partial portion is removed so that current can continue to flow through the entire primary, causing a substantial drop in current level but maintaining the stored inductive energy. Current can thus rise rapidly initially, so that the coil will store sufficient energy to initiate sparking at high speeds of the connected internal combustion engine while, at low speeds thereof, the overall current flow through the coil is decreased.

    摘要翻译: 点火线圈的主要部分被点燃以提供串联连接的两个部分主要部分; 在初始电流期间,只有一个部分部分具有流过其中的电流,另一部分部分被短路。 当通过线圈的电流已经升高到预定水平时,如通过感测电阻器的电流流动感测到的,跨过第二部分部分的短路被去除,使得电流可以继续流过整个初级,导致实质上的下降 电流水平,但保持存储的感应能量。 因此,电流首先可以迅速上升,使得线圈将储存足够的能量以在连接的内燃机的高速下起动火花,而在低速时,通过线圈的总电流减小。

    Power output stage having a darlington-pair circuit for switching an
inductive load, especially the ignition coil of an internal-combustion
engine
    8.
    发明授权
    Power output stage having a darlington-pair circuit for switching an inductive load, especially the ignition coil of an internal-combustion engine 失效
    功率输出级具有用于切换感应负载,特别是内燃机的点火线圈的达林顿对电路

    公开(公告)号:US5424671A

    公开(公告)日:1995-06-13

    申请号:US030493

    申请日:1993-05-25

    摘要: A power output stage has a Darlington-pair circuit (11, 12) for switching an inductive load, especially the ignition coil of an internalcombustion engine. In order to predetermine the operating mode of the power output stage, a switch (24) is provided which bridges the base-emitter junction of the Darlington-pair circuit (11, 12), is closed in the event of a quick disconnection of the output stage, and is opened in the event of a voltage-limited disconnection of the output stage. A voltage divider, which consists of at least two resistors (16, 18) and bridges the switching junction of the Darlington-pair circuit (11, 12), is connected by means of its pick-off to the junction point between the switch (24) and the base of the Darlington-pair circuit (11, 12), the switch (24) being connected in parallel with a part (18) of the voltage divider. When the switch (24) is open, the Darlington-pair circuit is consequently raised again upon reaching a lower limiting voltage of, for example, 35 volts over the resistor (16), so that, in the case of driving an ignition coil, a spark-free disconnection is achieved. Only a very few, simple and cheap components are required for this purpose.

    摘要翻译: PCT No.PCT / DE91 / 00712 Sec。 371日期:1993年5月25日 102(e)日期1993年5月25日PCT 1991年9月7日PCT PCT。 出版物WO92 / 05364 日期:1992年4月2日。功率输出级具有用于切换感性负载,特别是内燃机的点火线圈的达林顿对电路(11,12)。 为了预先确定功率输出级的工作模式,提供了一个开关(24),其桥接达林顿对电路(11,12)的基极 - 发射极结,在快速断开 输出级,并且在输出级的电压限制断开的情况下被打开。 由至少两个电阻器(16,18)组成的分压器并桥接达林顿对电路(11,12)的开关结,通过其拾取器连接到开关( 24)和达林顿对电路(11,12)的基极,开关(24)与分压器的一部分(18)并联连接。 当开关(24)断开时,达尔顿对电路因此在电阻器(16)上达到例如35伏特的较低限制电压时再次升高,使得在驱动点火线圈的情况下, 实现无火花切断。 为此目的只需要很少的,简单和便宜的部件。

    Monitoring circuit for resetting malfunctioning electronic components,
such as microprocessors
    10.
    发明授权
    Monitoring circuit for resetting malfunctioning electronic components, such as microprocessors 失效
    用于复位故障电子元件(如微处理器)的监控电路

    公开(公告)号:US4512019A

    公开(公告)日:1985-04-16

    申请号:US429221

    申请日:1982-09-30

    CPC分类号: G06F11/0757

    摘要: A capacitor which is charged by recurring square waves of a normally functioning microprocessor discharges at a steady rate, so that if the square waves do not continue, an operational amplifier will switch over and produce a reset pulse for the microprocessor. Repeated transitions of one polarity of the square wave recharge the capacitor during a short interval terminated by a second operational amplifier when the capacitor reaches a fixed level of charge. This second amplifier, which has feedback coupling, also initiates the timing discharge of the capacitor. A diode network at its output prevents charging the capacitor in the static state. This arrangement makes it unnecessary to provide another capacitor for quickly recharging the capacitor to prevent its discharge from switching over the first-mentioned operational amplifier.

    摘要翻译: 由正常功能的微处理器的重复方波充电的电容器以稳定的速率放电,因此如果方波不能继续,则运算放大器将切换并产生微处理器的复位脉冲。 当电容器达到固定电荷水平时,方波的一个极性的重复转换在短时间间隔期间由电容器重新充电,由第二运算放大器终止。 具有反馈耦合的第二放大器也启动电容器的定时放电。 其输出端的二极管网络可防止在静态状态下对电容充电。 这种布置使得不需要提供用于快速再充电电容器的另一个电容器,以防止其放电切换首先提到的运算放大器。