Condition monitoring of the cam chain tensioner in the motorcycle engine

Timing gear systems of motorcycle engines are equipped with chain tensioners, which are subject to premature damage in certain engine models. Early detection of such damage is essential, as it may protect the user from unexpected engine failure while the motorcycle is running. This paper presents the results of research whose purpose was to use the measurements and analyses of vibration signals for the diagnosing of damage to the hydraulic tensioner in the timing gear system. Stand tests were conducted of the motorcycle engine in which new, used or damaged tensioners were installed. The research results allow to conclude that a change in the technical condition of the tensioner caused by wear contributes to an increased level of engine vibrations and that it is possible to detect damage to the timing gear system tensioner by means of measurement, processing and analysis of vibration signals

The application of a continuous wavelet transform for diagnosing damage to the timing chain tensioner in a motorcycle engine

Timing chain tensioners are the elements whose damage may lead to serious failure of an engine. In addition, damage to the tensioner in a motorcycle engine may cause uncontrolled coming of the engine to a standstill, thereby putting the motorcyclist’s life or health at risk, should the timing chain break. The paper discusses the possibility of diagnosing damage to the timing chain tensioner in a motorcycle engine by means of the measurement, processing and analysis of vibration signals. The vibration generated by an engine equipped with a new, used and damaged tensioner was measured. By applying vibration signal processing by means of a continuous wavelet transform, the ranges of the rotational speed and the frequency scale were identified, for which monitoring of the condition of the timing chain tensioner should be conducted. Based on the tests performed, the quantitative and qualitative vibration symptoms of damage to the timing chain tensioner were identified

The application of a continuous wavelet transform for diagnosing damage to the timing chain tensioner in a motorcycle engine

Timing chain tensioners are the elements whose damage may lead to serious failure of an engine. In addition, damage to the tensioner in a motorcycle engine may cause uncontrolled coming of the engine to a standstill, thereby putting the motorcyclist’s life or health at risk, should the timing chain break. The paper discusses the possibility of diagnosing damage to the timing chain tensioner in a motorcycle engine by means of the measurement, processing and analysis of vibration signals. The vibration generated by an engine equipped with a new, used and damaged tensioner was measured. By applying vibration signal processing by means of a continuous wavelet transform, the ranges of the rotational speed and the frequency scale were identified, for which monitoring of the condition of the timing chain tensioner should be conducted. Based on the tests performed, the quantitative and qualitative vibration symptoms of damage to the timing chain tensioner were identified