Results 1 to 10 of about 3,157,747 (296)

Optical diagnostics on the pre-chamber jet and main chamber ignition in the active pre-chamber combustion (PCC)

Combustion and Flame, 2021
Abstract We studied the relationship between pre-chamber jet and main chamber ignition in the pre-chamber combustion (PCC) of an optical engine, fueled with methane and equipped with an active pre-chamber with two rows of orifices. Acetone planar laser-induced fluorescence (PLIF) and OH* chemiluminescence imaging techniques were simultaneously ...
Qinglong Tang, Ramgopal Sampath, Manuel Echeverri Marquez   +2 more
exaly   +4 more sources

Influence of Pre-Chamber Volume, Orifice Diameter and Orifice Number on Performance of Pre-Chamber SI Engine—An Experimental and Numerical Study

Energies, 2023
This paper presented an experimental and numerical study of pre-chamber volume, number of orifices and orifice diameter influence on engine performance and emissions.
Rudolf Tomić, Momir Sjerić, Josip Krajnović, Sara Ugrinić   +3 more
doaj   +2 more sources

Study on the effects of narrow-throat pre-chamber geometry on the pre-chamber jet velocity using dual formaldehyde PLIF imaging

Combustion and Flame, 2022
The effects of narrow-throat pre-chamber geometry on the main chamber combustion were investigated on a heavy-duty optical engine fueled with methane. Simultaneous dual formaldehyde PLIF imaging and OH* chemiluminescence imaging were applied to characterize the early-stage formaldehyde jet and flame jet discharge process.
Qinglong Tang, Ramgopal Sampath, Priybrat Sharma   +2 more
exaly   +3 more sources

Controllability of Pre-Chamber Induced Homogeneous Charge Compression Ignition and Performance Comparison with Pre-Chamber Spark Ignition and Homogeneous Charge Compression Ignition [PDF]

Applied Sciences
This paper presents an experimental and numerical evaluation of the pre-chamber induced HCCI combustion concept (PC-HCCI) in terms of engine performance, emissions, and controllability.
Josip Krajnović, Sara Ugrinić, Viktor Dilber, Darko Kozarac   +3 more
doaj   +2 more sources

Experimental study on the effect of pre-chamber structural parameters on combustion and emissions characteristics of ethanol pre-chamber engine

Case Studies in Thermal Engineering
To achieve low-carbon and sustainable development in the automotive industry, ethanol pre-chamber engines offer significant technical potential. The structural parameters of the pre-chamber significantly influence the formation of the pre-chamber spray ...
Kaichang Lai, Fangxi Xie, Hong Chen, Jiakun Du, Xiaoxiao Jiang, Jingxun Yang   +5 more
doaj   +2 more sources

A Quasi-Dimensional Model of Pre-Chamber Spark-Ignition Engines [PDF]

SAE Technical Paper Series, 2019
<div class="section abstract"><div class="htmlview paragraph">Increasingly stringent pollutant and CO₂ emission standards require the car manufacturers to investigate innovative solutions to further improve the fuel economy of their fleets.
Bozza, Fabio, De Bellis, Vincenzo, Tufano, Daniela, Malfi, Enrica, Müller, Christoph, Habermann, Knut   +5 more
openaire   +3 more sources

Optimization of Pre-Chamber Geometry and Operating Parameters in a Turbulent Jet Ignition Engine

Energies, 2022
A turbulent jet ignition engine enables operation with lean mixtures, decreasing nitrogen oxide (NOX) emissions up to 92%, while the engine efficiency can be increased compared to conventional spark-ignition engines.
Viktor Dilber, Momir Sjerić, Rudolf Tomić, Josip Krajnović, Sara Ugrinić, Darko Kozarac   +5 more
doaj   +1 more source

Pre-Chamber spark ignition: a reliability analysis of pre-chamber valve functions

Pamukkale University Journal of Engineering Sciences, 2023
Ön oda ateşlemesi, kıvılcım ateşlemeli motorların zayıf hava yakıtı ayarlarında çalışmasına izin verir. Yakıt verimliliğini artırır ve emisyonları azaltır. Bu çalışmada tek bir GE Jenbacher J620 doğal gaz motorunun güvenilirlik analizi yapılmıştır. Pakistan, Karaçi'de elektrik üretim sektöründe sürekli yükte çalışıyordu.
AKBAR, Faraz, ZAKİ, Sarah
openaire   +2 more sources

Custom-Designed Pre-Chamber: Investigating the Effects on Small SI Engine in Active and Passive Modes

Energies, 2023
This work shows the results of an experimental campaign carried out in two spark ignition engines, a small optical research engine and its commercial counterpart, using a turbulent ignition system (pre-chamber) specifically designed for small engines ...
Paolo Sementa, Cinzia Tornatore, Francesco Catapano, Silvana Di Iorio, Bianca Maria Vaglieco   +4 more
doaj   +1 more source

CFD Optimization of the Pre-Chamber Geometry for a Gasoline Spark Ignition Engine

Frontiers in Mechanical Engineering, 2021
In the present paper, an efficient optimization method based on Bayesian updating strategy is developed for the design of a spark-ignition engine equipped with pre-chamber.
Haiwen Ge, Ahmad Hadi Bakir, Suren Yadav, Yunseon Kang, Siva Parameswaran, Peng Zhao   +5 more
doaj   +1 more source