| 摘要 |
In an apparatus for controlling an engine, an input switching unit switches an input signal to be inputted to an input path from a crank signal to a cam signal when it is determined that the crank signal is abnormal. An event signal generating unit generates a crank-input event signal while it is determined that the crank signal is abnormal by an abnormality determining unit. The crank-input event signal has a level that repetitively changes in a predetermined direction. Each level change of the crank-input event signal is synchronized with a corresponding level change of the crank signal. A monitoring unit monitors a level change of the crank-input event signal while it is determined that the crank signal is abnormal by the abnormality determining unit.
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