Ion Current Measurement of Diluted Combustion Using a Multi-Electrode Spark Plug

Dev, Shouvik; Sandhu, Navjot Singh; Ives, Mark; Yu, Shui; Zheng, Ming; Tjong, Jimi

doi:10.4271/2018-01-1134

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…The current thus obtained is called the ionization current. In the spark-ignition engine, the role of the ionization current sensor can be played by the spark plug conventionally used to ignite the mixture [4,8].…”

Section: Introductionmentioning

confidence: 99%

Relations between ion signal and flame propagation in cylinder of a rapid compression machine

Fiedkiewicz¹,

Pielecha²

2019

Combustion Engines

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Internal combustion engine diagnostics using traditional methods of cylinder pressure signal processing limits the amount of information available about the combustion process. It is necessary to conduct research in order to obtain more precise information – increasing the combustion process diagnosis potential. One such suggestion is the use of an ionization signal and an attempt to link it to the flame development during combustion of gaseous fuels. The article attempts to identify such a relationship using a rapid compression machine due to optical access it provides to the combustion chamber. As a result of the research, the relationships between the ionization voltage (chemical and thermal) of the first combustion phase and the corresponding flame development rates were determined. A relatively high coefficient of determination value was obtained for both relations, which indicates the possibility of obtaining diagnostic information about the combustion process from the ionization signal.

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Section: Introductionmentioning

confidence: 99%

Relations between ion signal and flame propagation in cylinder of a rapid compression machine

Fiedkiewicz¹,

Pielecha²

2019

Combustion Engines

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“…The efficiency and fast response time of such a system has also been successfully used in Formula 1 engines [9]. There are also other, less popular solutions, that use the phenomenon of ion formation in the cylinder to measure EGR content [8], determine the quality indicators of the combustion process [2] or control the operation of the HCCI engine [7].…”

Section: Introductionmentioning

confidence: 99%

Selection of ion sensor operating parameters in quasi-static conditions

Fiedkiewicz¹,

Pielecha²

2019

Combustion Engines

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Evaluating combustion quality using sensors that allow continuous assessment of the process is one of the modern methods of engine sensory diagnostics. The proper calibration of such systems is a task that requires many studies to determine the conditions and quantities affecting the process. The analysis of significance of quantities related to the ionization signal was carried out in the article. The magnitude of the voltage generating the electric field, the type of spark plug used, the distance of the spark plug electrodes and the dynamic factor – spark plug operating temperature – were all tested. The tests were carried out using a CNG burner (with an excess air ratio of lambda = 1) and four spark plugs. As a result of the ionization signal research, the following relationships were obtained: regarding the impact of the sensor position on the amount of generated voltage (the smaller the distance the greater the value of the signal), the effect of temperature on the sensor resistance (non-linear relationship: increase in temperature decreases resistance, with R2 = 0.9997) effect of system voltage on the ionization signal (linear relationship: voltage increase increases the ionization current signal with a determination coefficient of R2 = 0.9803). In addition, it was found that using an iridium electrode candle had the best effects on the ionization current, regardless of the electrode’s geometrical parameters.

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“…The analysis of a light wave requires using complicated apparatus, similarly as for the variable pressure indication [24]. The ionization current measurement has the widest application possibilities due to the system structure and low cost [4,5,8].…”

Section: Introductionmentioning

confidence: 99%

Assessment of possible use of the ionization signal for the combustion process diagnostics in a spark-ignition combustion engine powered by natural gas

Fiedkiewicz

Pielecha

2018

Eksploatacja i Niezawodność – Maintenance and Reliability

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Article citation info: (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl Łukasz Fiedkiewicz ireneusz PielechAAssessment of possible use of the ionizAtion signAl for the combustion process diAgnostics in A spArk-ignition combustion engine powered by nAturAl gAs ocenA możliwości wykorzystAniA sygnAłu jonizAcji do diAgnostyki procesu spAlAniA w silniku spAlinowym o zApłonie iskrowym zAsilAnym gAzem ziemnym*The ionization signal, which is a result the presence of ions and electrons in the cylinder space of the internal combustion engine, is affected by many factors, including: temperature, pressure, fuel mixture composition, fuel type, presence of exhaust gases and others. The shape of the signal changes to a large extent from cycle to cycle, which indicates the stochastics of the combustion process. Nevertheless, its analysis provides a lot of useful information, such as the location of the maximum pressure or the maximum heat release rate. Using these signals allows supplementing the limited engine control systems of the combustion process in internal combustion engines. The paper presents a comparative analysis of the gas ionization current signal in the cylinder and the variable pressure at fixed operating points of a single-cylinder, four-stroke engine powered by natural gas. The analysis allowed to determine the relationship between the positions of the maximum thermal ionization signal value and of the maximum combustion pressure value. Additionally the relationship between the position of the maximum thermal fraction derivative and the maximum heat release rate was established.

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Ion Current Measurement of Diluted Combustion Using a Multi-Electrode Spark Plug

Cited by 7 publications

References 14 publications

Relations between ion signal and flame propagation in cylinder of a rapid compression machine

Relations between ion signal and flame propagation in cylinder of a rapid compression machine

Selection of ion sensor operating parameters in quasi-static conditions

Assessment of possible use of the ionization signal for the combustion process diagnostics in a spark-ignition combustion engine powered by natural gas

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