The computer based control of a four stroke single cylinder spark plug ignition engine

The electronic systems which are used in today?s engines are in a very complex structure. In order to understand and comprehend these structures, each system must be examined in sections. In this study, an ignition control system is designed for an original spark plug ignition engine. The system is controlled by a microcontroller. There is a computer that is connected to the microcontroller. The control system continuously controls the engine revolution and vehicle load. This data is processed and sent to the computer by the microcontroller. The optimum ignition advance is calculated according to momentary load and revolution data from the ignition advance map in the computer software and then it is sent to the microcontroller again. The microcontroller card sends the trigger signal to the ignition circuit according to the coming ignition advance value and so the spark of spark plug is provided at the required moment. Key Words : Ignition system, ignition control system, electronic control unit, control with micro controller