| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic control type engine preventing degradation in detection accuracy of a crank angle. SOLUTION: A crank angle sensor 2 outputs an analogue pulsating flow signal 51 corresponding to detection based on detection of thick walls and clearances configuring a reference tooth missing part 48, crank angle corresponding teeth 47, and a clearance 50 between teeth, that is between the crank angle corresponding teeth 47, 47, passing in front of its detection part 5, and the analogue pulsating flow signal 51 is converted to a pulse signal 54 based on prescribed threshold values 52, 53 by a waveform shaping circuit. A control means detects a detection reference position of the crank angle and the crank angle by the pulse signal 54. The reference tooth missing part 48 includes a thick wall 55 stepped downward in the direction separating further from the detection part 5 than the adjacent crank angle corresponding tooth 47. COPYRIGHT: (C)2011,JPO&INPIT |
