Identification of components of vibration signal from the Hatz 1B40 engine

An experiment is described consisting in recording of vibration signals on the body of a HATZ 1B40 single-cylinder compression-ignition engine, applied among other things as a driving source for FOGO power generators. Characteristic time courses fragments of the recorded vibration signals were linked to occurrence of specific phenomena in the working engine and with operation of specific engine mechanisms generating these signals. Potential was found for utilization of the vibration signal recorded on the body of a HATZ 1B40 compression-ignition engine for optimization of simultaneous feeding of the engine with diesel oil and natural gas. There are potential possibility of application of a simple knock sensor from a spark-ignition engine as a component of a feeding control system of a compression-ignition engine with diesel oil and natural gas. Theoretical time course of vibration signal of the HATZ 1B40 engine, example oscilloscope trace of time courses of signals reflecting, location of mounting of the vibration acceleration sensor on the engine, allocation of the theoretical and empirical time course of the vibration signal of the HATZ 1B40 engine, example vibration signal time courses recorded at the head of an engine fed with various mixtures of air and natural gas and diesel oil with oval-marked fragments corresponding to diesel oil injection are presented in the paper.