| 摘要 |
PURPOSE:To reduce wirings in an engine chamber for improving operability and reliability by incorporating an engine ignition timing control unit, a negative pressure sensor and a simultaneous ignition coil in a housing to be mounted on an internal-combustion engine body. CONSTITUTION:An ignition signal is generated by a crank angle sensor 27 and a slit board 28 and supplied to a control unit 30 through a signal line 31. A proper engine ignition timing and a current supply angle are set in a control unit 30 by this crank angle signal, a negative pressure signal and a hook signal supplied from a wiring 33, and current supply to a simultaneous ignition coil 24 is controlled by a wiring 32. Thus, wirings connected from the outside of a housing 23 are only the wiring 33 from a battery and knock sensor and a high voltage line 34 interconnecting a simultaneous firing ignition coil 24 and an ignition plug. Thus, the wirings in an engine chamber are reduced to improve the operability and reliability.
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