Ignition distributor-Hall Effect sensor switching system and method

In an ignition distributor to work with an engine control computer, a coil, a reference signal generator, a reference signal sensor, a synchronization signal generator, a synchronization signal sensor, fuel injectors, and the spark plugs of an internal combustion engine to supply high tension electrical energy to the spark plugs and to supply signals to the fuel injectors, where the ignition distributor communicates with the engine control computer using signals from the reference signal generator and the synchronization signal generator as interrupted by an interrupter with metal vanes equal in number to the number of internal combustion chambers in the internal combustion engine where one of the vanes has a window and as sensed by the reference signal sensor and the synchronization signal sensor, an in-synchronization method for processing the signals produced thereby and for controlling the supply of high tension electrical energy to the spark plugs and to control the supply of energization and de-energization signals to the fuel injectors thereby synchronizing the ignition and injection, the method comprising:

• checking the synchronization condition on a periodic basis by:
• determining the condition of the signal from the reference signal sensor, resetting a first flag in the engine control computer and then ending the in-synchronization method if the reference signal is low, and if the reference signal is high, checking the condition of the signal from the synchronization signal sensor;
• if the signal from the synchronization signal sensor is low, setting the first flag and then ending the in-synchronization method, and if the signal is high, checking the condition of the first flag;
• if the condition of the first flag is reset, ending the in-synchronization method, and if the flag is set, setting a second flag indicating that the top dead center position of cylinder 3 is imminent;
• and
• then ending the in-synchronization method.