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    • 1. 发明授权
    • Ignition system with improved temperature and voltage compensation
    • 点火系统具有改善的温度和电压补偿
    • US4253442A
    • 1981-03-03
    • US60878
    • 1979-07-26
    • Werner JundtBernd BodigGerd HohneGeorg PfaffGerhard SohnerBernd Kalkhof
    • Werner JundtBernd BodigGerd HohneGeorg PfaffGerhard SohnerBernd Kalkhof
    • F02P3/04F02P3/045F02P3/05F02P1/00
    • F02P3/051
    • 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.
    • 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。
    • 6. 发明授权
    • Ignition system for internal combustion engine
    • 内燃机点火系统
    • US4105006A
    • 1978-08-08
    • US703780
    • 1976-07-09
    • Werner JundtPeter WernerBernd BodigGerhard SohnerHelmut Roth
    • Werner JundtPeter WernerBernd BodigGerhard SohnerHelmut Roth
    • F02P3/04F02P3/045F02P3/05F02P3/02
    • F02P3/051
    • Current flow to the ignition coil during low-speed operation of the engine, is controlled by an auxiliary control switch which is connected in shunt with the primary of the ignition coil. Serially connected with the primary is a main control switch which is controlled to close until current through the primary has reached a certain value, at which time the main switch opens and the shunt auxiliary switch is closed to permit continued inductive current flow through the coil and thus store ignition energy, the cycle repeating to maintain current flow through the primary at a level to store sufficient energy for the ignition spark which, at the ignition instant, effects opening of the shunt circuit by opening the auxiliary switch while also opening the circuit to the primary, thus providing a high-voltage pulse which provides for sparking of the spark plug. The sensor for current flow through the primary is preferably a resistor which, when the voltage drop thereacross exceeds a predetermined level, controls changeover of a transistor.
    • 在发动机的低速运行期间到点火线圈的电流流量由辅助控制开关控制,辅助控制开关与点火线圈的初级线路分流连接。 与初级系统连接的是主控制开关,其被控制为关闭,直到初级电流达到一定值,此时主开关打开并且分流辅助开关闭合,以允许持续的感应电流流过线圈, 因此存储点火能量,循环重复以维持电流流过初级,以保持点火火花的足够的能量,该点火火花在点火瞬间通过打开辅助开关来实现分流回路的打开,同时打开电路 从而提供高电压脉冲,其提供火花塞的火花。 用于流过初级电流的电流传感器优选是电阻器,当超过预定电平的电压降时,控制晶体管的切换。
    • 8. 发明授权
    • Ignition system for internal combustion engines with tapped ignition coil
    • 带点火线圈的内燃机点火系统
    • US4117818A
    • 1978-10-03
    • US704116
    • 1976-07-09
    • Bernd BodigHelmut SchmiedGerd Hohne
    • Bernd BodigHelmut SchmiedGerd Hohne
    • F02P3/04F02P3/045F02P3/05F02P3/08F02P5/155F02P3/02
    • F02P3/051F02P3/0838
    • 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.
    • 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。
    • 9. 发明授权
    • Ignition system with overvoltage and excess current protection
    • 点火系统具有过压和过流保护
    • US4244344A
    • 1981-01-13
    • US040070
    • 1979-05-17
    • Peter WernerWerner JundtHerman RoozenbeekBernd Bodig
    • Peter WernerWerner JundtHerman RoozenbeekBernd Bodig
    • F02P3/04F02P3/045F02P3/05F02P3/055H03K17/082F02P1/00H05B41/36
    • H03K17/0826F02P3/0552
    • 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.
    • 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。
    • 10. 发明授权
    • Ignition system
    • 点火系统
    • US4174696A
    • 1979-11-20
    • US869627
    • 1978-01-16
    • Werner JundtBernd BodigHeinz DeckerGunther SchmidtBert WurstKarl SeegerHerman Roozenbeek
    • Werner JundtBernd BodigHeinz DeckerGunther SchmidtBert WurstKarl SeegerHerman Roozenbeek
    • F02P3/04F02P3/045F02P3/05F02P15/10F02P5/04
    • F02P15/10F02P3/053
    • 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.
    • 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。