Fuel injection controller

摘要

In a fuel injection controller 100, a duration timer 19 measures an intertooth interval from when a pickup detects a tooth of a pulser to when it detects a next tooth. A calculation unit 15 specifies an injection timing for each cylinder by using the intertooth interval stored in a storage unit 18. The storage unit 18 renews the stored intertooth interval with a newly input intertooth interval of a tooth of the same number as a tooth of the stored intertooth interval. When a determination unit 17 determines that the intertooth interval to be used for specifying the injection timing corresponds to an intertooth interval of a missing tooth zone 13a, the calculation unit 15 converts and uses the intertooth interval to be used based on the number of the tooth most recently detected by the pickup when the intertooth interval is used.