公开(公告)号：US5056485A

公开(公告)日：1991-10-15

申请号：US529418

申请日：1990-05-29

申请人： Sadao Kobayashi ,  Hisayuki Yamamoto

发明人： Sadao Kobayashi ,  Hisayuki Yamamoto

IPC分类号： F02P5/15 ,  F02B77/08 ,  F02P5/155 ,  F02P7/073 ,  G01M15/06

CPC分类号： F02P7/073 ,  F02B77/08 ,  F02P5/1558 ,  G01M15/06 ,  Y02T10/46

摘要： A crank angle sensor comprises a rotor plate formed with first slits for detecting a first cylinder angular position, second slits for a second cylinder angular position, and a third slit for detecting an angular position of a specified cylinder. The first slits are equi-angularly distant one after another and arranged within a predetermined annular band within the rotor plate, and the second slits are equi-angularly distant one after another and arranged within the predetermined annular band. Each of the first slits is located adjacent to the corresponding one of the second slits. In an ignition timing control system using the crank angle sensor, the control is performed by generating a train of pulses including a train of leading pulses and a train of trailing pulses superimposed to each other, determining whether a start switch is turned ON or not, determining whether an engine temperature is greater than a predetermined value or not, and carrying out an ignition at a falling edge of each of the trailing pulses when the engine temperature is greater than the predetermined value, and at a falling edge of each of the leading pulses when the engine temperature is not greater than the predetermined value.

摘要翻译： 曲柄角传感器包括形成有用于检测第一气缸角位置的第一狭缝，用于第二气缸角位置的第二狭缝和用于检测指定气缸的角位置的第三狭缝的转子板。 第一狭缝一个接一个地等角度地延伸并且布置在转子板内的预定环形带内，并且第二狭缝一个接一个地等距离地布置在预定的环形带内。 每个第一狭缝位于与相应的一个第二狭缝相邻的位置。 在使用曲轴转角传感器的点火正时控制系统中，通过产生一串脉冲串来进行控制，所述脉冲串包括相互叠加的前导脉冲串和一串拖尾脉冲，确定启动开关是否接通， 确定发动机温度是否大于预定值，并且当发动机温度大于预定值时在每个后沿脉冲的下降沿进行点火，并且在每个前导点的下降沿 当发动机温度不大于预定值时脉冲。