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    • 1. 发明申请
    • DEVICE FOR PRODUCING CONTROL SIGNALS IN TIMED RELATION TO THE ROTATION OF A SHAFT
    • 用于生产与轴的旋转有关的控制信号的装置
    • WO1989008186A1
    • 1989-09-08
    • PCT/EP1988000146
    • 1988-02-27
    • ROBERT BOSCH GMBHBORST, Wolfgang
    • ROBERT BOSCH GMBH
    • F02P03/045
    • F02P7/077F02B2075/027F02P3/0453
    • A device for controlling ignition and/or injection operations in a four-stroke internal combustion engine comprises a phase-locked loop (PLL) in which a frequency divider (14) divides the number of peaks of a triangular output waveform (w) by half the number of cylinders to produce a feedback signal which is compared in a phase comparator (10) with reference marks (BM) produced by a pulse generator associated on the engine crankshaft. The rotation of the crankshaft is thereby accurately divided into the required number of segments for the spark plugs of the individual cylinders. The speed-dependant capacitor (Cn) is charged or discharged upon an increase or decrease in speed (n) by means of a follower control (18), to adjust the output frequency of the waveform (w) so that it remains in synchronism with the reference marks (BM). The phase of the output waveform (w) is corrected upon an increase or decrease in speed (n) by means of the follower control (18) which either multiplies the current (iw) to charge the output capacitor (Cw) rapidly in a fraction of the period of the waveform upon an increase in speed (n) or sets the current (iw) at zero so that the output capacitor (Cw) temporarily holds its charge upon a decrease in speed (n).
    • 用于控制四冲程内燃机中的点火和/或喷射操作的装置包括锁相环(PLL),其中分频器(14)将三角形输出波形(w)的峰值数量除以一半 用于产生在相位比较器(10)中与由发动机曲轴相关联的脉冲发生器产生的参考标记(BM)进行比较的反馈信号的气缸数。 因此,曲轴的旋转被精确地分成用于各个气缸的火花塞的所需数量的段。 速度依赖电容器(Cn)通过跟随器控制器(18)在速度(n)的增加或减小时进行充电或放电,以调整波形(w)的输出频率,使其保持与 参考标记(BM)。 输出波形(w)的相位通过跟随器控制器(18)在速度(n)的增加或减小时被校正,所述跟随器控制器(18)将电流(iw)乘以电流(iw),使输出电容器 在速度(n)增加时的波形周期或将电流(iw)设置为零,使得输出电容器(Cw)在速度(n)的降低时暂时保持其电荷。
    • 3. 发明申请
    • IGNITION CONTROL CIRCUIT FOR INTERNAL COMBUSTION ENGINES
    • 内燃机点火控制电路
    • WO1997018391A1
    • 1997-05-22
    • PCT/GB1996002776
    • 1996-11-11
    • BRITISH GAS PLCDIXON, Stanley, John
    • BRITISH GAS PLC
    • F02P03/045
    • F02P3/0456F02P17/12Y02E20/16
    • A combined heat and power system including a 4 cylinder reciprocating internal combustion engine fuelled by a fuel gas, for example natural gas, and operating at a substantially constant speed and at a substantially constant air to fuel ratio. Operation of a spark generator and distributor device (44) is under control of an ignition spark duration control (10) whereby the duration of an ignition spark between the electrodes of the plug (16) is automatically variable to bring the spark duration closer to a predetermined minimum duration over which predetermined minimum duration there would be supplied to the electrodes of the plugs in turn a minimum level of electrical ignition energy to substantially avoid misfire in the cylinders provided with the plugs. The minimum level of the electrical ignition energy is variable according to the size of the gap between the electrodes of the plug (16). The duration of the ignition spark of the plug (16) is observed by a monitor (62) in the lead which inputs the observed duration time into the control (10).
    • 包括由燃料气体例如天然气燃料的4缸往复式内燃机并且以基本上恒定的速度和基本恒定的空气与燃料比运行的组合的热和电力系统。 火花发生器和分配器装置(44)的操作在点火火花持续时间控制(10)的控制下,由此在插头(16)的电极之间的点火火花的持续时间是自动变化的,以使火花持续时间更接近 预定的最小持续时间,其将被提供给塞子的电极的预定的最小持续时间依次是最小水平的电点火能量,以基本上避免设置有插头的气缸中的失火。 根据插头(16)的电极之间的间隙的大小,电点火能量的最小水平是可变的。 通过引线中的监视器(62)观察插头(16)的点火火花的持续时间,其将观察到的持续时间输入到控制器(10)中。