Process for monitoring of reference cylinder for spark-ignition internal combustion engine

摘要

The process for monitoring the combustion phase involves measuring the voltage at the terminals of the spark plug (5) in the reference cylinder to determine the combustion phase. The change with time of the potential at the spark plug terminals is tracked, and the appearance of the high tension pulse generating the spark identified. The stage in the cycle is identified from the measured high tension value. The information is used to control timing of fuel injection and advance or retard of ignition. The monitoring, processing and control of injection and ignition are performed by a suitably programmed computer (7). The timing signal for the controller is derived from a variable reluctance transducer (4) fitted to the engine flywheel.