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 +3 more
doaj +3 more sources
High Compression Ratio Active Pre-chamber Single-Cylinder Gasoline Engine with 50% Gross Indicated Thermal Efficiency. [PDF]
ACS Omega, 2023 Active pre-chamber turbulent jet ignition with a high compression ratio has been demonstrated to be an effective method for significantly enhancing engine thermal efficiency. A dual modification of the combustion chamber and the pre-chamber was performed
Zhan W +6 more
europepmc +2 more sources
CFD Simulation of Pre-Chamber Spark-Ignition Engines—A Perspective Review
EnergiesThe growing demand to reduce emissions of pollutants and CO2 from internal combustion engines has led to a critical need for the development of ultra-lean burn engines that can maintain combustion stability while mitigating the risk of knock.
Soo-Jin Jeong
doaj +3 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 CO<sub>2</sub> emission standards require the car manufacturers to investigate innovative solutions to further improve the fuel economy of their fleets.
Bozza, Fabio +5 more
openaire +4 more sources
Experimental Investigation on Knock Characteristics from Pre-Chamber Gas Engine Fueled by Hydrogen
EnergiesHydrogen-fueled engines require large values of the excess air ratio in order to achieve high thermal efficiency. A low value of this coefficient promotes knocking combustion.
Ireneusz Pielecha +2 more
doaj +2 more sources
EnergiesIn this paper, in order to improve the fuel economy of the actual application of the engine under multi-operating conditions, an experimental study is carried out on a turbo-charged direct-injection engine based on different pre-chamber structures.
Xiaowei Zhao +3 more
doaj +2 more sources
Analysis of Performance of Passive Pre-Chamber on a Lean-Burn Natural Gas Engine under Low Load
Journal of Marine Science and Engineering, 2023 Stable ultra-lean combustion is an effective way for natural gas engines to reduce NOx emissions, but it also has higher requirements for ignition stability.
Changhao Lu +5 more
doaj +2 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 SciencesThis 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 +3 more
doaj +2 more sources
Continuous wave doppler pre-attenuation velocity envelope: a promising tool for the echocardiographic assessment of aortic stenosis [PDF]
Echo Research and PracticeBackground In this study, we evaluated the utility of the continuous wave (CW) Doppler pre-attenuation velocity envelope as a potential surrogate for pulsed-wave (PW) Doppler-based interrogation of left ventricular outflow tract (LVOT) flow in patients ...
Maria Riasat +4 more
doaj +2 more sources
Fuel, 2023 Pre-chamber combustion (PCC) has the potential to extend the lean-burn limit in spark-ignition engines, which can promote engine efficiency and relieve the concern of emissions of nitrogen oxides. This work assessed the effects of pre-chamber (PC) and piston geometries on the combustion characteristics of an optical methane PCC engine with both ...
Xinlei Liu +9 more
semanticscholar +3 more sources