Effect of a semi electro-mechanical engine valve on performance and emissions in a single cylinder spark ignited engine

Doğan, Oğuzhan

doi:10.1631/jzus.a0900119

Cited by 10 publications

(4 citation statements)

References 24 publications

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“…In electromagnetic micromachinery constructions developed worldwide, employing the aforementioned type of power supply, the expected efficiency is around 5%. Larger electromagnetic devices with pulse power supply reach 11% [21,22]. The electrodynamic actuator reached an efficiency of 2.8%, while the reluctance actuator reached an efficiency of 3.0%.…”

Section: Discussion About Measurementsmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Szulborski,

Kolimas,

Bieńkowski

et al. 2020

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This paper presents an approach to the construction and measurements of electrodynamic and reluctance actuators. Executive elements were used as drives in a novel concept of a magnetomotive micropump. The paper discusses various aspects concerning the designation of parameters, control system, the explanation of physical phenomena, and the optimization of the basic elements for coil units. The conducted work describes the measurement system and the analysis of the derived values. The actuators were compared and the pros/cons of building the conceptual device were highlighted. The best solution to be used in the upcoming work concerning the construction of a magnetomotive micropump was chosen based on measurements, engineering aspects, layout control, and key parameters such as the piston velocity, energy stored in capacitors, and efficiencies.

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Section: Discussion About Measurementsmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Szulborski,

Kolimas,

Bieńkowski

et al. 2020

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“…These motors fall into three categories: reluctance motors, permanent magnet motors and hybrids, which are a combination of both. The reasons for the aforementioned increase in interest in the SRM motors are mainly articles [24,25]: Demand for medium and high velocity electric motors to power modern vehicles, manipulator arms, robotics and space technology [26,27]; Economic conditions-an attempt to make savings in the operation of working machines by resigning from expensive in use and maintenance of mechanical gears, replacing them with a magnetic gear [28,29]; As previously mentioned, the elimination of rare earth metals [30].…”

Section: State Of the Artmentioning

confidence: 99%

Validated Analytical Model of 8/6 and 10/8 Switched Reluctance Motors

et al. 2022

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The aim of this work was to develop a parameterized analytical and FEM (Finite Element Method) model of a switched reluctance motor. The developed analytical model was used to assess the performance of these types of motors, and is determined to be a tool for comparing and evaluating switched reluctance motors of various designs. The aim of the work was also the systematization of knowledge related to the operation, structure and methods of determining the static electromagnetic torque generated by switched reluctance motors. The FEM model (ANSYS) was, also, made in order to verify physical phenomena occurring during operation of these motors. Four laboratory tests were executed as part of the work prototypes of switched reluctance motors built at Warsaw University of Technology. A parameterized analytical model was developed and implemented in MATLAB. The model operation tests were conducted and as a result, the characteristics describing the dependence of the electromagnetic torque as a function of the current and the position of the rotor were obtained. The model was validated by confronting the analytical calculations supported by FEM simulation results with the measurement results. The usefulness of the results obtained with the use of the procured models was assessed.

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“…More and more restrictive legislation on pollutant emissions and the need for improving the efficiency of internal combustion engines have steered the efforts of many researchers toward the development of new engine technologies, as for example variable valve actuation (VVA) systems, which enable the implementation of novel and advanced combustion concepts for both gasoline and diesel engines [1][2][3][4]. Hence, last two decades different types of VVA systems have been proposed, among them: pneumatic [5], motor driven [6][7][8], Electro-hydraulic [9][10][11] and electro-mechanical [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Valve Position‐based Control at Engine Key‐on of an Electro‐mechanical Valve Actuator for Camless Engines: A Robust Controller Tuning Via Bifurcation Analysis

Velasco¹,

Gaeta²

2015

Asian Journal of Control

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Electro-mechanical valve actuators (EMVA) formed by two opposed electromagnets and two balanced springs are appealing solutions to implement advanced combustion concepts for camless engines. A crucial control problem for this valve actuator regards the first valve lift manoeuvre (termed 'first catching') to be rapidly performed after each insertion of the engine ignition key, when the EMVA rests at middle position where electromagnets offer low control authority. The control problem is challenging due to system nonlinear behavior. Mathematically, the EMVA system can be assumed to be a spring-mass impacting system affected by a non-smooth friction force and a dynamic saturated magnetic force. In this work an effective valve position-based first catching control strategy is proposed to control the strongly nonlinear system. Bifurcation analysis and parameter space simulations are used to study the closed-loop system behavior and to tune the controller gains as well. The effectiveness of the control approach is validated through numerical simulations of a highly predictive dynamic model of the valve actuator developed by authors in a previous work.

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Effect of a semi electro-mechanical engine valve on performance and emissions in a single cylinder spark ignited engine

Cited by 10 publications

References 24 publications

Bulletin of the Polish Academy of Sciences: Technical Sciences

Bulletin of the Polish Academy of Sciences: Technical Sciences

Validated Analytical Model of 8/6 and 10/8 Switched Reluctance Motors

Valve Position‐based Control at Engine Key‐on of an Electro‐mechanical Valve Actuator for Camless Engines: A Robust Controller Tuning Via Bifurcation Analysis

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