The influence of impurities on the operation of selected fuel ignition systems in combustion engines

Różowicz, Sebastian; Tofil, Szymon

doi:10.1515/aee-2016-0026

Cited by 11 publications

(11 citation statements)

References 11 publications

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“…The obtained results can be applied to a nonlinear system (1) using the inverse transformation -1 (z). This methodology can be used to precisely analyse the spark discharge as a dynamic phenomenon in the ignition system of a motor vehicle, which allows for high-precision response [54].…”

Section: Resultsmentioning

confidence: 99%

Input-Output Transformation Using the Feedback of Nonlinear Electrical Circuits: Algorithms and Linearization Examples

Różowicz

Zawadzki

2018

Mathematical Problems in Engineering

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This paper addresses the problem of nonlinear electrical circuit input-output linearization. The transformation algorithms for linearization of nonlinear system through changing coordinates (local diffeomorphism) with the use of closed feedback loop together with the conditions necessary for linearization are presented. The linearization stages and the results of numerical simulations are discussed.

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Section: Resultsmentioning

confidence: 99%

Input-Output Transformation Using the Feedback of Nonlinear Electrical Circuits: Algorithms and Linearization Examples

Różowicz

Zawadzki

2018

Mathematical Problems in Engineering

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“…The second method used to approximate the s α factor is the expansion into the Oustaloup series, where for frequency range (ω l ,ω h ), it is shown as transfer function H(s) [31][32][33][34]:…”

Section: Selected Approximation Methods In the Analysis Of Fractionalmentioning

confidence: 99%

Properties of Fractional-Order Magnetic Coupling

et al. 2020

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This paper presents the properties of fractional-order magnetic coupling. The difficulties connected with the analysis of two coils in dynamic states, resulting from the classical approach, provided motivation for studying the properties of fractional-order magnetic coupling. These difficulties arise from failure to comply with the commutation laws, i.e., a sudden power disappearance in the primary winding caused by a switch-mode power supply. Theoretically, under ideal conditions, a sudden power disappearance in the coil is, according to the classical method, manifested by a sudden voltage surge in the form of the Dirac delta function. As is well-known, it is difficult to obtain such ideal conditions in practice; the time of current disappearance does not equal zero due to the circuit breaker’s imperfection (even when electronic circuit breakers are used, the time equals several hundred nanoseconds). Furthermore, it is necessary to take into account phenomena occurring in real inductances, such as the skin effect, the influence of the ferromagnetic core and many other factors. It would be very difficult to model all these phenomena using classical differential calculus. The application of fractional-order differential calculus makes it possible to model them in a simple way by appropriate selection of coefficients and fractional-order derivatives. It should be mentioned that the analysis could be used, for example, in the case of high-voltage generation systems, including spark ignition systems of internal combustion engines. The use of fractional-order differential calculus will allow for more accurate modeling of phenomena occurring in such systems.

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“…On the basis of the analysis of the above tables, it can be stated that the biggest influence on the damping factor is the change of R 0, and on the phase factor the change of C 0 . C 0 also has the greatest impact on the modulus, and the argument of both the output voltage and current [15][16][17][18][19]. In order to evaluate how the values of wave and output parameters change when per unit length parameters are changed, a proprietary program has been written in the MATLAB environment.…”

Section: Numerical Experimentsmentioning

confidence: 99%

Assessment of the Impact of Per Unit Parameters Errors on Wave and Output Parameters in a Transmission Line

et al. 2021

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The assessment of the impact of per unit length parameter errors on the determination of wave parameters, currents, and voltages at the end of the line has been presented in the paper. The impact on the above-mentioned values has been indicated. This paper presents an assessment of the impact of per unit parameter errors on the determination of both wave parameters, as well as currents and voltages at the end of a transmission line, although it is mainly focused on indicating which of the per unit parameters have the strongest impact on the above-mentioned values. For this purpose, elements of incremental sensitivity have been used.

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The influence of impurities on the operation of selected fuel ignition systems in combustion engines

Cited by 11 publications

References 11 publications

Input-Output Transformation Using the Feedback of Nonlinear Electrical Circuits: Algorithms and Linearization Examples

Input-Output Transformation Using the Feedback of Nonlinear Electrical Circuits: Algorithms and Linearization Examples

Properties of Fractional-Order Magnetic Coupling

Assessment of the Impact of Per Unit Parameters Errors on Wave and Output Parameters in a Transmission Line

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