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A comparative study to evaluate the effects of pre-chamber jet ignition for engine characteristics and emission formations at high speed

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  • Yontar, Ahmet Alper

Abstract

The pre-chamber ignition technology is a good solution that can make spark-ignition engines gradually more efficient. The novelty of the study is the testing of the pre-chamber jet ignition according to detailed air-fuel mixture range and fuel injection rates by combustion chambers. The main points in using this pre-chamber jet ignition were to observe the effect of reducing fuel consumption and emission formation. The tests were carried out for 0.80–1.80 lambda ranges and the pre-chamber injection/main chamber injection mass ratio ranges. A commercial RON 98 fuel was used at two ignition modes in tests for 5000 rpm high engine speed. At the pre-chamber jet ignition usage, the in-cylinder pressure for 1.00 lambda is overall 1.78% and 19.89% higher than the 0.80 lambda and the 1.80 lambda. The brake specific fuel consumption is about 8.67% lower than the spark-plug ignition usage at 0.80–1.20 lambda range. The HC formation is overall 8.12% lower than the spark-plug usage. The NOx formation for the spark-plug ignition is approximately 53.97% higher than the pre-chamber jet ignition usage as the temperature in-cylinder is high. The pre-chamber jet ignition was led to a much shorter flame development time and better combustion stability than the spark-plug.

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  • Yontar, Ahmet Alper, 2020. "A comparative study to evaluate the effects of pre-chamber jet ignition for engine characteristics and emission formations at high speed," Energy, Elsevier, vol. 210(C).
    • Handle: RePEc:eee:energy:v:210:y:2020:i:c:s0360544220317485
    DOI: 10.1016/j.energy.2020.118640
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    References listed on IDEAS

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    1. Benajes, J. & Novella, R. & Gomez-Soriano, J. & Martinez-Hernandiz, P.J. & Libert, C. & Dabiri, M., 2019. "Evaluation of the passive pre-chamber ignition concept for future high compression ratio turbocharged spark-ignition engines," Applied Energy, Elsevier, vol. 248(C), pages 576-588.
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    4. Roso, Vinícius Rückert & Santos, Nathália Duarte Souza Alvarenga & Valle, Ramon Molina & Alvarez, Carlos Eduardo Castilla & Monsalve-Serrano, Javier & García, Antonio, 2019. "Evaluation of a stratified prechamber ignition concept for vehicular applications in real world and standardized driving cycles," Applied Energy, Elsevier, vol. 254(C).
    5. Ju, Dehao & Huang, Zhong & Li, Xiang & Zhang, Tingting & Cai, Weiwei, 2020. "Comparison of open chamber and pre-chamber ignition of methane/air mixtures in a large bore constant volume chamber: Effect of excess air ratio and pre-mixed pressure," Applied Energy, Elsevier, vol. 260(C).
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    1. Novella, R. & Gomez-Soriano, J. & Barbery, I. & Martinez-Hernandiz, P.J., 2024. "Exploring the passive the pre-chamber ignition concept for spark-ignition engines fueled with natural gas under EGR-diluted conditions," Energy, Elsevier, vol. 294(C).

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