Control apparatus for internal combustion engine

A control apparatus for an internal combustion engine, comprising:

• a crankshaft provided in the internal combustion engine;
• a crank angle detection unit that is provided in the internal combustion engine and that outputs a crank signal each time the crankshaft rotates by a predetermined angle;
• a generator that rotates in synchronization with the rotation of the crankshaft, and that outputs alternating voltage signals with one-phase;
• and
• a control unit, to which the alternating voltage signals are input, that ascertains ignition timings based on the crank signals, performs ignition control so as to spark the internal combustion engine at the ignition timings, determines a polarity of the alternating voltage signal each time the crank signal is detected, and determines that a failure has occurred in the generator when the polarity is not changed.

A control apparatus for an internal combustion engine, comprising:

• a crankshaft provided in the internal combustion engine;
• a crank angle detection unit that is provided in the internal combustion engine and that outputs a crank signal each time the crankshaft rotates by a predetermined angle;
• a generator that rotates in synchronization with the rotation of the crankshaft, and that outputs alternating voltage signals with one-phase;
• an intake state detection unit that detects an intake state value that indicates an intake state in the internal combustion engine, and that outputs intake state signals;
• and
• a control unit, to which the alternating voltage signals and the intake state signals are input, that ascertains ignition timings based on the crank signals, performs ignition control so as to spark the internal combustion engine at the ignition timings, determines each predetermined cycle whether or not the intake state value is changed based on the intake state signals, determines each predetermined cycle whether or not a polarity of the alternating voltage signal is changed, and determines that a failure has occurred in the generator when the intake state value is changed and the polarity of the alternating voltage signal is not changed.

A control apparatus for an internal combustion engine, comprising:

• a crankshaft provided in the internal combustion engine;
• a crank angle detection unit that is provided in the internal combustion engine and that outputs a crank signal each time the crankshaft rotates by a predetermined angle;
• a generator that rotates in synchronization with the rotation of the crankshaft, and that outputs alternating voltage signals with one-phase;
• an intake state detection unit that detects an intake state value that indicates an intake state in the internal combustion engine, and that outputs intake state signals;
• and
• a control unit, to which the alternating voltage signals and the intake state signals are input, that ascertains ignition timings based on the crank signals, performs ignition control so as to spark the internal combustion engine at the ignition timings, determines each predetermined cycle whether or not the intake state value is changed based on the intake state signals, determines each predetermined cycle whether or not the crank signal is input and whether or not a polarity of the alternating voltage signal is changed, and that determines that a failure has occurred in the generator when the change of the intake state value is present the input of the crank signal is present, and the change of polarity of the alternating voltage signal is absent.