| 摘要 |
A spark timing control method of internal combustion engine comprising: the step obtaining 1~3rd operation value variables(SPKCNT, SPKTIM, DWLCNT) by using a spark angle(SPKADV) and a conduction time(DWLTIM); the step making 114 before top dead point as the standard value of a tooth constant(TTHCNT) in output signal of a crank position sensor, taking a spark signal ON in accordance with a TTHCNT with a DWLCNT; and the step determining the agreement of a TTHCNT with a SPKCNT in case of disagreement of a TTHCNT with a DWLCNT, terminating in disagreement and starting spark in agreement; is disclosed.
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