Modeling of Internal Combustion Engine Ignition Systems with a Circuit Containing Fractional-Order Elements

Abstract

This paper discusses the research and analysis of the dynamics of high-voltage generating systems. The test subject is an ignition system modelled by a set of two induction coils with an open ferromagnetic core that constitutes an ignition coil. The essence of the tests involved the application of magnetic coupling of the fractional order that enabled taking into account the non-idealities of the coils and the connector that implements the ignition point. The paper contains the results of a theoretical analysis, supported by digital simulations. The conducted experiments confirm the purposefulness of the conducted analyses and the possibility of modeling real objects based on circuits with fractional-order elements.

Experimental and numerical approach to assess the dynamic performance of an inductive ignition system

“…To reveal the influence each component parameter has on the ignition system current-voltage performance, electrical models of the components of inductive ignition systems have been presented in the works of Stevenson et al, 5 Wang et al, 6 Ro´_ zowicz et al 7,12,13 , Korenciak et al, 14 and Qisong et al 15 However, despite the fact that the models shown in Refs. [5][6][7][12][13][14][15] take into account the resistances and capacitances of the hightension wire and the spark plug, parasitic capacitance of the switch, and mutual inductance, all of them deal with a solid-state switch that is, a BJT, a MOSFET, or an IGBT, modeled as ideal switches (even in the case when some Zener-based clamp is added to limit the voltage output). Stevenson et al 5 state that some inaccuracy of their modeling results is due to the switching element model.…”

“…The models shown in Refs. 6,7,[12][13][14][15][16] consider the resistances and capacitances of the high-tension wire and the spark plug, parasitic capacitance of the electronic switch, and mutual inductance.…”

Magneto: Desain dan Simulasi

“…Kemudian aki menyuplai arus dan tegangan pada ignition coil untuk menghasilkan output tegangan delco. Tegangan output delco didistribusikan pada empat spark plug yang mengakibatkan penyalaan intensitas bunga api secara bergantian [31]. Hasil output tegangan delco dihubungkan pada mikrokontroler Arduino untuk memantau tegangan, suhu, putaran motor fan pada LCD [32].…”

Optimal design and analysis of fractional-order linear phase filter

“…In this section, the optimized 2.06-order filter and the 2nd-order filter are analyzed in the frequency domain and compared with the 2nd-order Bessel filter, which is a commonly used integer-order linear phase filter, and the transfer function of the 2nd-order Bessel filter with normalized cutoff frequency is shown in (18).…”

“…The circuit realization of 2.06-order filter requires 1.06-order capacitor. Although much academic research has been done on fractional-order capacitors [18]- [20], no commercially available fractional-order capacitors are currently in production, so this paper uses the Foster I RC network and general impedance converter (GIC) to approximate the 1.06 order capacitors as shown in Figure 6. The element values of the Foster I RC network computed using the approach described in [21] and the continued fraction expansion method [22] are shown in Figure 6.…”