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Spark-ignition engine

About: Spark-ignition engine is a research topic. Over the lifetime, 4352 publications have been published within this topic receiving 66550 citations.


Papers
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Journal ArticleDOI
TL;DR: Calibration results of the fluorescence signal intensities in nitrogen, air, and an exhaust-gas-air mixture in the wide range from 298 to 748 K and from 0.2 bar (0.02 MPa) to 20 bars for the two important excitation wavelengths 308 and 248 nm are presented.
Abstract: Although the fluorescence behavior of acetone has already been examined widely, the amount of data is still not sufficient for the quantification of signals over the parameter field relevant for combustion engines. This leads to large uncertainties when new excitation wavelengths are applied or in cases where temperature and pressure and bath gas composition dependences of the fluorescence yield must be extrapolated from models. This work presents calibration results of the fluorescence signal intensities in nitrogen, air, and an exhaust-gas-air mixture in the wide range from 298 to 748 K and from 0.2 bar (0.02 MPa) to 20 bars for the two important excitation wavelengths 308 and 248 nm. Based on this data, measurements of temperature and exhaust gas concentrations in a fired spark ignition engine were performed with high accuracy in single-shot images also.

46 citations

Journal ArticleDOI
TL;DR: In this article, the problems related to mixture formation in a GDI engine are analyzed by means of a numerical technique, where the atomization of a hollow cone fuel spray generated by a high pressure swirl injector is studied.

46 citations

Journal ArticleDOI
TL;DR: In this article, the authors give an overview of the problems associated with top ring performance in modern SI engines, the mechanisms behind these problems, and possible solutions, based on engine test data and computer models.
Abstract: Driven by energy conservation and environment protection, modern SI engines are required to have higher and higher power density. Consequently, engines and engine components are becoming tighter and lighter, and engines are more often operated at elevated speed and component temperature. Piston and piston ring designs thus face constant challenge to provide proper control of blow-by, oil consumption, friction, wear, and oil consumption. This paper is intended to give an overview of the problems associated with top ring performance in modern SI engines, the mechanisms behind these problems, and possible solutions. The analysis is based on engine test data and computer models. Major topics covered in this paper include (I) top ring flutter and collapse, and their influence on blow-by; (2) top ring reverse flutter and its influence on oil consumption; (3) contact between top ring and its groove, and its potential influence on ring/ groove wear and micro-welding: (4) top ring/liner lubrication and its influence on ring face friction, wear, and scuffing.

45 citations

Journal Article
TL;DR: In this article, an adaptive fuzzy based input-output model is used to model an internal combustion engine from the throttle to the crankshaft output, with the response specification set by desired percent overshoot and settling time.
Abstract: In order to meet the limits imposed on automotive emissions, engine control systems are required to constrain air/fuel ratio (AFR) in a narrow band around the stoichiometric value, due to the strong decay of catalyst efficiency in case of rich or lean mixture. This paper presents a model of a sample spark ignition engine and demonstrates Simulink’s capabilities to model an internal combustion engine from the throttle to the crankshaft output. We used welldefined physical principles supplemented, where appropriate, with empirical relationships that describe the system’s dynamic behavior without introducing unnecessary complexity. We also presents a PID tuning method that uses an adaptive fuzzy system to model the relationship between the controller gains and the target output response, with the response specification set by desired percent overshoot and settling time. The adaptive fuzzy based input-output model is then used to tune on-line the PID gains for different response specifications. Experimental results demonstrate that better performance can be achieved with adaptive fuzzy tuning relative to similar alternative control strategies. The actual response specifications with adaptive fuzzy matched the desired response specifications. Keywords—Modelling, Air–fuel ratio control, SI engine, Adaptive fuzzy Control.

45 citations

Journal ArticleDOI
TL;DR: In this paper, the development of an electronically controlled gas injection system for a hydrogen-fuelled spark ignition engine is discussed, and the performance and emission characteristics of the engine are determined under various operating conditions.

45 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202388
2022168
2021201
2020168
2019211
2018211