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    • 54. 发明申请
    • Ignition timing control system for internal combustion engine
    • 内燃机点火正时控制系统
    • US20030226544A1
    • 2003-12-11
    • US10457379
    • 2003-06-10
    • Kenichi NakamoriJun AokiKatsunori Ueda
    • G05D001/00
    • F02P5/1516F02D41/0072F02P5/106Y02T10/46Y02T10/47
    • An ignition timing control system for an internal combustion engine includes an electronic control unit. In a transition state where an in-cylinder EGR rate varies, the unit calculates an ignition timing corresponding to the in-cylinder EGR rate by means of linear interpolation based on ignition timings for EGR and non-EGR operations determined from maps, sets a retard amount based on the ratio of the in-cylinder EGR rate to a target EGR rate, and performs ignition timing control based on a corrected ignition timing obtained by subtracting the retard amount from the calculated ignition timing, thus preventing occurrences of knocking due to excessively advanced ignition timing, and deteriorated fuel consumption and drivability.
    • 用于内燃机的点火正时控制系统包括电子控制单元。 在缸内EGR率变化的过渡状态下,该单元通过基于由地图确定的EGR和非EGR运行的点火正时的线性插值来计算与缸内EGR率相对应的点火正时,设定延迟 基于缸内EGR率与目标EGR率的比例,基于从计算出的点火正时减去延迟量而获得的校正点火正时进行点火正时控制,从而防止由于过度前进而发生的爆震 点火正时,燃油消耗和驾驶性能变差。
    • 55. 发明授权
    • Ignition control system for an internal combustion engine
    • 内燃机点火控制系统
    • US4962738A
    • 1990-10-16
    • US412956
    • 1989-09-26
    • Toshio Iwata
    • Toshio Iwata
    • F02P5/10F02P5/145
    • F02P5/1455F02P5/106Y02T10/46
    • An ignition control system for an internal combustion engine adapted to control ignition timing based on the internal pressure in an engine cylinder. In one embodiment, ignition timing is determined based mainly on the rotational position (i.e., crank angle) of a crankshaft sensed by a crank angle sensor at the time or normal operation of the crank angle sensor, whereas it is determined based on the internal pressure in the engine cylinder sensed by a cylinder internal pressure sensor at the time of failure in the crank angle sensor. In the latter case, the output of cylinder internal pressure sensor is differentiated and then compared with a reference signal of a predetermined level so that ignition is effected when the differentiator output crosses the reference signal level for the second time per engine cycle. In another embodiment, a target ignition timing is determined based on the internal pressure in the engine cylinder and the intake pressure in an intake pipe. When the internal pressure in the engine cylinder as sensed by a cylinder internal pressure sensor becomes equal to the target ignition timing, ignition is effected.
    • 一种用于内燃机的点火控制系统,其适于基于发动机气缸中的内部压力来控制点火正时。 在一个实施例中,主要基于在曲柄角传感器的时间或正常操作期间由曲轴转角传感器感测到的曲轴的旋转位置(即,曲柄角)来确定点火正时,而基于内部压力 在由曲柄角传感器发生故障时由气缸内部压力传感器检测到的发动机气缸中。 在后一种情况下,气缸内部压力传感器的输出被微分,然后与预定水平的参考信号进行比较,使得当微分器输出在每个发动机循环中第二次穿过参考信号水平时,点火是有效的。 在另一个实施例中,基于发动机气缸中的内部压力和进气管中的进气压力确定目标点火正时。 当由气缸内部压力传感器感测到的发动机气缸中的内部压力等于目标点火正时时,点火。