Circuit for compensating very fast current fluctuations
    1.
    发明授权
    Circuit for compensating very fast current fluctuations 失效
    用于补偿非常快的电流波动的电路

    公开(公告)号:US5212617A

    公开(公告)日:1993-05-18

    申请号:US879055

    申请日:1992-04-30

    IPC分类号: H02H9/00 H02H9/04

    CPC分类号: H02H9/046 H02H9/001

    摘要: A circuit for neutralizing very fast current fluctuations in a power consumer circuit, such as an integrated circuit having a pair of input or output conductors includes a bipolar transistor 17 whose collector is connected via a parallel connection of a semiconductor diode and a resistor to one of the conductors. The emitter of the transistor is grounded and the base is connected to the other conductor. Another parallel connection of a diode and a resistor is connected between the two conductors to bias the transistor to a preset current when a standard current of a constant magnitude flows through the consumer circuit. If current surges or breaks occur in the standard current, the preset current flowing through the collector resistor undergoes corresponding changes and a compensating current is very fast loaded to the conductors through the capacitance of the barrier layer of the p-n junction of the collector diode to neutralize the changes of the standard current.

    摘要翻译: 用于中和诸如具有一对输入或输出导体的集成电路的功率消耗电路中非常快速的电流波动的电路包括双极晶体管17,其集电极通过半导体二极管和电阻器的并联连接到 导体。 晶体管的发射极接地,基极连接到另一个导体。 二极管和电阻器的另一个并联连接连接在两个导体之间,以便当恒定幅度的标准电流流过消费电路时,将晶体管偏置为预设电流。 如果在标准电流中出现电流浪涌或断流,则流过集电极电阻的预设电流经历相应的变化,并且补偿电流通过集电极二极管的pn结的势垒层的电容非常快速地加载到导体,以中和 标准电流的变化。

    Circuit apparatus for measuring the primary voltage of an ignition coil
    2.
    发明授权
    Circuit apparatus for measuring the primary voltage of an ignition coil 失效
    用于测量点火线圈初级电压的电路设备

    公开(公告)号:US5075627A

    公开(公告)日:1991-12-24

    申请号:US490360

    申请日:1990-03-08

    IPC分类号: F02P17/10 F02P17/12

    CPC分类号: F02P17/10 F02P17/12

    摘要: The voltage developed by a primary winding of an ignition coil is supplied to a voltage divider for furnishing an analog signal of reduced amplitude for evaluation on an analog basis, which reduced amplitude analog signal is averaged by a capacitor connected between the voltage divider tap and ground. The capacitor eliminates the undesired effect of voltage spikes, but is not large enough to interfere with the measurement of voltages exceeding the ignition-initiating primary winding voltage value. The same reduced primary winding voltage is supplied through an input resistor to one input of a differential amplifier connected to operate as a switch having hysteresis and having a reference voltage applied to it such that the output will be the provision of a steady voltage having a duration corresponding to the spark discharge duration, for subsequent digital evaluation. The tap of the voltage divider that provides the analog output voltage for the system is subjected to a clamping action provided by another voltage divider of low ohm value connected across a 5-volt source and having its tap connected to the tap of the first mentioned voltage divider by a diode, so that primary winding voltages above the spark-initiating voltage will be measured on a reduced scale, while the differential amplifier and other integrated circuits are prevented from having overvoltages applied to them. The circuit is therefore suited for economical manufacture in so-called hybrid technology.

    摘要翻译: 由点火线圈的初级绕组产生的电压被提供给分压器,用于提供用于在模拟的基础上进行评估的减小的幅度的模拟信号,该降低幅度的模拟信号由连接在分压器抽头和地之间的电容器平均化 。 电容器消除了电压尖峰的不期望的影响,但不足以干扰超过点火起始初级绕组电压值的电压的测量。 相同的初级绕组电压通过输入电阻器提供给连接到作为具有迟滞的开关的差分放大器的一个输入,并且具有施加到其上的参考电压,使得输出将提供具有持续时间的稳定电压 对应于火花放电持续时间,用于随后的数字评估。 为系统提供模拟输出电压的分压器的抽头受到一个由5欧姆源连接的低欧姆值的另一个分压器提供的钳位动作,并且其抽头连接到第一个提到的电压的抽头 通过二极管分压,使得高于火花启动电压的初级绕组电压将以缩小的尺度被测量,同时防止差分放大器和其它集成电路对其施加过电压。 因此,该电路适合于所谓的混合技术的经济制造。

    Ignition system with overvoltage and excess current protection
    3.
    发明授权
    Ignition system with overvoltage and excess current protection 失效
    点火系统具有过压和过流保护

    公开(公告)号:US4244344A

    公开(公告)日:1981-01-13

    申请号:US040070

    申请日:1979-05-17

    CPC分类号: H03K17/0826 F02P3/0552

    摘要: In a known ignition system, the emitter-collector circuit of the ignition transistor is connected in series with the primary winding of the ignition coil and with a precision resistor. When the voltage across the latter exceeds a predetermined value, an auxiliary transistor is switched to a conductive state. The emitter-collector circuit of the auxiliary transistor is connected to the base of the ignition transistor and, when conductive, prevents further increases of current through the primary winding of the ignition coil. To protect this circuit, a series circuit including two Zener diodes is connected between the base and collector of the ignition transistor. Further, a voltage divider is connected in parallel with the emitter-collector circuit of the ignition transistor and an additional resistor is connected between the base and the emitter thereof. When overvoltages across the primary winding cause breakdown of the Zener diodes, the current through the Zener diodes is blocked from the emitter-collector circuit of the auxiliary transistor either by a diode or by a blocking transistor having an emitter-collector circuit connected in parallel with the base-emitter circuit of the auxiliary transistor. The blocking transistor is maintained in the conductive state blocking the auxiliary transistor throughout the application time of an externally applied blocking signal which is adapted to maintain the ignition transistor in the blocked state.

    摘要翻译: 在已知的点火系统中,点火晶体管的发射极 - 集电极电路与点火线圈的初级绕组和精密电阻串联。 当后者的电压超过预定值时,辅助晶体管被切换到导通状态。 辅助晶体管的发射极 - 集电极电路连接到点火晶体管的基极,并且当导电时,防止通过点火线圈的初级绕组的电流的进一步增加。 为了保护该电路,包括两个齐纳二极管的串联电路连接在点火晶体管的基极和集电极之间。 此外,分压器与点火晶体管的发射极 - 集电极电路并联连接,附加电阻连接在基极和发射极之间。 当初级绕组上的过电压引起齐纳二极管的击穿时,通过齐纳二极管的电流被辅助晶体管的发射极 - 集电极电路阻断,或者由二极管或具有与 辅助晶体管的基极 - 发射极电路。 在外部施加的阻塞信号的施加时间内,阻塞晶体管保持导通状态,阻止辅助晶体管,其适于将点火晶体管保持在阻塞状态。

    Ignition system
    4.
    发明授权
    Ignition system 失效
    点火系统

    公开(公告)号:US4174696A

    公开(公告)日:1979-11-20

    申请号:US869627

    申请日:1978-01-16

    CPC分类号: F02P15/10 F02P3/053

    摘要: A switch connected in series with the ignition coil is "on" and "off," respectively, in the presence and absence of a pulse furnished by a pulse generator operating in synchronism with the crankshaft of the engine. If the pulse width of the pulses is too small for the current in the ignition coil to reach the minimum value required for ignition, the closing time of the series switch is advanced, while if the pulse width is too long, causing excess heat dissipation in the coil, the closing time of the switch is retarded. To accomplish this, a first digital counter counts downwards for a predetermined time and upwards for a time period in which the current in the ignition coil exceeds a predetermined current. Upon interruption of the current in the coil, the then-present value in the first digital counter is transferred to a second digital counter. The second counter then counts down at a predetermined rate until a predetermined count is reached. At this time, the series switch is switched to the conductive state.

    摘要翻译: 在与发动机的曲轴同步运行的脉冲发生器的存在和不存在的情况下,与点火线圈串联的开关分别为“开”和“关”。 如果脉冲的脉冲宽度对于点火线圈中的电流来说太小,达到点火所需的最小值,则串联开关的闭合时间将提前,而如果脉冲宽度太长,则会导致多余的散热 线圈,开关的闭合时间被延迟。 为了实现这一点,第一数字计数器在点火线圈中的电流超过预定电流的时间段向下计数预定时间和向上计数。 在线圈中的电流中断时,第一数字计数器中的当前值被传送到第二数字计数器。 然后第二个计数器以预定的速率递减计数,直到达到预定计数。 此时,串联开关切换到导通状态。

    Low-speed compensated ignition system for an internal combustion engine
    5.
    发明授权
    Low-speed compensated ignition system for an internal combustion engine 失效
    内燃机低速补偿点火系统

    公开(公告)号:US4356808A

    公开(公告)日:1982-11-02

    申请号:US317284

    申请日:1981-11-02

    CPC分类号: F02P3/0453

    摘要: A switching transistor (7, 9) is serially connected with the primary (5) of an ignition coil; current flow therethrough is controlled from an a-c signal generator (16) with respect to an ON threshold level (Ue) to store electromagnetic energy, and an OFF threshold level (Ua) to generate a spark; a variable conductivity circuit (26) controlled from a sensing resistor (8) modifies the response level of the threshold switch (13) with respect to the null or cross-over level of the applied signal. To prevent excessive current flow under idle-speed conditions, in accordance with the invention, the ON threshold level, at least, of the switch is shifted by introducing an auxiliary bias voltage derived from an auxiliary capacitor (36) and connected (37, 38) by the signal source through a diode (38) which prevents application of an auxiliary bias voltage to the threshold switch (13) under extremely low, e.g. starting conditions, permits application of the additional bias voltage providing for shift of the ON response level (Ue) under idling conditions, but again loses control as the speed continues to increase, and control by the variable conductivity circuit takes over.

    摘要翻译: 开关晶体管(7,9)与点火线圈的初级(5)串联连接; 从a-c信号发生器(16)相对于ON阈值电平(Ue)控制电流流动以存储电磁能量和OFF阈值电平(Ua)以产生火花; 从感测电阻器(8)控制的可变电导率电路(26)相对于所施加的信号的零值或交叉电平来修改阈值开关(13)的响应电平。 为了防止在怠速条件下的过大电流,根据本发明,至少开关的导通阈值电平通过引入从辅助电容器(36)导出并连接的辅助偏置电压(37,38 )由信号源通过二极管(38),二极管(38)防止在非常低的范围内向阈值开关(13)施加辅助偏置电压,例如 启动条件允许施加额外的偏置电压,提供空载条件下的ON响应电平(Ue)的移动,但随着速度持续增加而再次失去控制,并且可变电导率电路的控制接管。

    Ignition system for internal combustion engine
    6.
    发明授权
    Ignition system for internal combustion engine 失效
    内燃机点火系统

    公开(公告)号:US4204508A

    公开(公告)日:1980-05-27

    申请号:US868869

    申请日:1978-01-12

    CPC分类号: F02P3/0453

    摘要: A transistor switch connected in series with the primary winding of the ignition coil permits and blocks current flow through the coil when in a conductive and non-conductive state respectively. Normally, the switch is "on" and "off" respectively in the presence and absence of an ignition current pulse furnished in synchronism with the rotation of the crankshaft of the engine. For increasing speeds, the time the switch is "on" prior to the ignition time is increased by switching it to the conductive state when the charge on a control capacitor reaches a predetermined charge. The charge on the control capacitor is changed in a first direction following receipt of each ignition signal. The rate of change of charge depends upon the resistance of the emitter-collector circuit of a first control transistor. The latter is, in turn, determined by the charge on an integrator capacitor which varies with changes in engine speed. When the charge on the control capacitor reaches a predetermined charge, the output transistor switch to the conductive state allowing current flow in the ignition coil.

    摘要翻译: 与点火线圈的初级绕组串联连接的晶体管开关分别在导通状态和非导通状态时允许并阻止电流通过线圈。 通常,在存在和不存在与发动机的曲轴的旋转同步的点火电流脉冲的情况下,开关分别为“开”和“关”。 为了提高速度,在点火时间之前开关“接通”的时间通过在控制电容器上的电荷达到预定电荷时将其切换到导通状态来增加。 在接收到每个点火信号之后,控制电容器上的电荷在第一方向上改变。 电荷变化率取决于第一控制晶体管的发射极 - 集电极电路的电阻。 后者又由积分器电容器的电荷决定,该电容随着发动机转速的变化而变化。 当控制电容器上的电荷达到预定电荷时,输出晶体管切换到允许电流在点火线圈中流动的导通状态。

    Circuit for decreasing oscillatoins in the primary winding of an
ignition coil of an internal combustion engine
    7.
    发明授权
    Circuit for decreasing oscillatoins in the primary winding of an ignition coil of an internal combustion engine 失效
    用于减少内燃机的点火线圈的初级绕组中的振荡的电路

    公开(公告)号:US4382431A

    公开(公告)日:1983-05-10

    申请号:US229122

    申请日:1981-01-28

    IPC分类号: F02P3/04 F02P3/045 F02P3/05

    CPC分类号: F02P3/051

    摘要: Oscillations which would normally occur when the current in the primary winding of an ignition coil is limited to a predetermined value prior to ignition are suppressed by use of a feedback resistor. Specifically, the basic circuit consists of the primary winding of the ignition coil connected in series with a Darlington transistor configuration which, in turn, is connected in series with a measuring resistor, at a common point. The input of the current control system is connected to the common point through an additional resistor, while the output of the control circuit is connected to the input base of the Darlington configuration. Oscillations which might otherwise occur are suppressed by the use of a feedback resistor connected between the input and output lines of the control circuit.

    摘要翻译: 通过使用反馈电阻抑制点火线圈的初级绕组中的电流被限制在点火前的预定值时通常发生的振荡。 具体地,基本电路由点火线圈的初级绕组组成,该点火线圈与达林顿晶体管配置串联,该Darlington晶体管配置又与公共点与测量电阻器串联连接。 当前控制系统的输入通过附加电阻连接到公共点,而控制电路的输出连接到达林顿配置的输入基。 否则可能发生的振荡通过使用连接在控制电路的输入和输出线之间的反馈电阻来抑制。

    Ignition system with improved temperature and voltage compensation
    8.
    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。

    System for decreasing the power consumption in the output transistor of
an ignition system
    9.
    发明授权
    System for decreasing the power consumption in the output transistor of an ignition system 失效
    用于降低点火系统的输出晶体管的功耗的系统

    公开(公告)号:US4246881A

    公开(公告)日:1981-01-27

    申请号:US54288

    申请日:1979-07-02

    申请人: Bernd Bodig

    发明人: Bernd Bodig

    CPC分类号: F02P3/051

    摘要: When the current through the primary winding of an ignition coil of an ignition system in an internal combustion engine has increased to a predetermined value, base current for a power transistor connected in series with the coil is shunted away, causing a rise in voltage across the primary winding. When the voltage rise across the primary winding has reached a maximum allowable value less than the value required to cause the generation of a spark, the transistor is switched back to the fully conductive state. This cycle is repeated during the time the transistor would normally be conductive and terminates at the ignition time, that is at the time the transistor is blocked by the ignition timing circuit of the internal combustion engine to create the spark.

    摘要翻译: 当通过内燃机中的点火系统的点火线圈的初级绕组的电流增加到预定值时,与线圈串联的功率晶体管的基极电流被分流,导致跨越 初级绕组。 当初级绕组上的电压上升达到小于产生火花所需的值的最大允许值时,晶体管切换回到完全导通状态。 在晶体管通常导通并在点火时间终止时,即在内燃机的点火正时电路阻塞晶体管以产生火花的时刻,重复该周期。

    Ignition system dependent upon engine speed
    10.
    再颁专利
    Ignition system dependent upon engine speed 失效
    点火系统取决于发动机转速

    公开(公告)号:USRE29862E

    公开(公告)日:1978-12-19

    申请号:US793953

    申请日:1977-05-05

    IPC分类号: F02P3/045

    CPC分类号: F02P3/0453

    摘要: An internal combustion engine is comprised of at least one engine cylinder, devices for introducing a combustion mixture into the cylinder, and an electrical igniting element operative for igniting the combustion mixture in the cylinder once per ignition cycle. An ignition transformer has a secondary winding connected across the igniting element, and also has a primary winding. A flow of current is established through the primary winding. An electronic switch is connected in the current path of the primary winding to control the flow of current through the primary winding. A triggering unit generates a train of crankshaft-synchronized triggering signals. A monostable control circuit has a trigger input for receipt of such triggering signals, and is operative when triggered into the unstable state for rendering and maintaining the electronic switch nonconductive for the duration of the unstable state, so as to interrupt the flow of current through the primary winding and induce across the secondary winding a voltage surge causing the igniting element to ignite the combustion mixture in the engine cylinder. When the monostable control circuit reverts to its stable state, it renders and maintains the electronic switch conductive for the duration of the stable state, whereby to establish a build-up of current flow in the primary winding in preparation for the next interruption of current flow. The monostable control circuit includes a timing stage operative for automatically .[.increasing.]. .Iadd.decreasing .Iaddend.the ratio of the duration of the unstable state to the duration of the ignition cycle with increasing engine speed within a predetermined range of engine speeds.