| 摘要 |
PROBLEM TO BE SOLVED: To prevent missing ignition chance during inertia rotation in an engine started by a recoil starter. SOLUTION: When the engine is rotated by a recoil starter 41, output of a generator directly connected to the engine increases and CPU 27 is reset at timing t0. Pulse P1 is input to the CPU 27 from a rotation speed sensor 28 at timing t1, a first ignition command is output after scheduled time T1 passed (t2). Pulse P2 from the rotation speed sensor 29 is input at timing t3. Since the CPU 27 normally operates then, engine speed is calculated based on interval between pulses P1 and P2. Ignition timing is determined from an ignition timing map 30 according to calculated speed and ignition command is output at timing t4 according to ignition timing. Thereafter, ignition timing is determined with using the ignition timing map 30. COPYRIGHT: (C)2005,JPO&NCIPI
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