The article presents the effect of different types of ignition cables used in combustion engines on the wear of spark plug electrodes and the quality of exhaust gases. The research and analysis of electrode wear were conducted by electronic scanning.
Słowa kluczowe: ignition systems, spark plug, spark discharge, energy, fumes.
W artykule przedstawiono wpływ różnych typów przewodów zapłonowych stosowanych w silnikach spalinowych na zużycie elektrod świec zapłonowych i jakość spalin. Badania i analizy zużycia elektrod przeprowadzono za pomocą skaningu elektronicznego.
Keywords: układy zapłonowe, świece zapłonowe, wyładowanie iskrowe, energia, spaliny
This work is a follow-up to papers [1,2] presenting the analysis of ignition systems for which the effects of spark plug electrode wear on spark discharge energy is discussed. The attempt has been made to introduce the element representing different ignition cables into ignition model. At present air pollution is not only a local but also an international problem. At one of the international road congresses, the results of environmental pollution in 12 major European cities were presented. They showed that transport emissions amount to more than 90% of CO, 76% of hydrocarbons, 38% of NOX, more than 70% of dust and almost 100% of lead. Therefore, the analysis of combustion engine and its ignition system is highly desirable. . Voltage measurement at ignition cable ends In general, ignition systems can be divided into systems with energy storage in inductance or in capacitance [1-3]. Figure 1 presents a general diagram of a mathematical model, where Rls is the spark plug and C45 and R45 denote capacity and resistance, respectively. Fig. 1. Model of the ignition system for the simulation studies. Ub - battery voltage, R1 - resistance of the ignition coil primary winding, L1 - inductance of the ignition coil primary winding, L2 - inductance of the ignition coil secondary winding, R2 - resistance of the ignition coil secondary winding, R4 - resistance representing the losses in the coil core, R3 - radioelectrical interference resistance, R45 - flow resistance of the spark plug, Rls - discharge resistance, C2 - self-capacity of the coil, C45 - self-capacity of the spark plug, M - coupling [2 ] The equivalent circuit of the ignition system presented in Fig. 1 is described by Eqs. (1) and (5) for two states of the control block. The solution to the system of equations obtained for the control block in the contact state by using the state variable method is presented as relationship (5), where it is assumed that the initial condi [...]
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