Results 71 to 80 of about 3,083 (233)

A Comprehensive Numerical Study on Effects of Natural Gas Composition on the Operation of an HCCI Engine Une étude numérique complète sur les effets de la composition du gaz naturel carburant sur le réglage d’un moteur HCCI

open access: yesOil & Gas Science and Technology, 2011
Homogeneous Charge Compression Ignition (HCCI) engine is a promising idea to reduce fuel consumption and engine emissions. Natural Gas (NG), usually referred as clean fuel, is an appropriate choice for HCCI engines due to its suitable capability of ...
Jahanian O., Jazayeri S. A.
doaj   +1 more source

Study on Combustion Chamber Geometry Effects in an HCCI Engine using High-Speed Cycle-Resolved Chemiluminescence Imaging [PDF]

open access: yes, 2007
The aim of this study is to see how geometry generated turbulence affects the Rate of Heat Release (ROHR) in an HCCI engine. HCCI combustion is limited in load due to high peak pressures and too fast combustion.
Andreas Vressner   +6 more
core   +1 more source

Application of Tire Pyrolysis Oil as an Alternative Fuel for Internal Combustion Engines—A Literature Review

open access: yesJournal of Combustion, Volume 2025, Issue 1, 2025.
Tire pyrolysis oil (TPO) has been recently used as an alternative to conventional fuels for internal combustion (IC) engines in order to satisfy some environmental and economic concerns. The main focus of this review is to shed light on the importance of TPO as an alternative fuel for IC engines. This paper systematically describes the TPO productions,
Keji Qi   +2 more
wiley   +1 more source

Investigation of combined effects of compression ratio and steam injection on performance, combustion and emissions characteristics of HCCI engine

open access: yesCase Studies in Thermal Engineering, 2017
Combined effects of compression ratios and steam injection on performance, combustion and emission characteristics of a HCCI engine are numerically investigated.
Fridhi Hadia   +3 more
doaj   +1 more source

European long‐term care marketisation: A political economy framework

open access: yesSocial Policy &Administration, Volume 58, Issue 7, Page 1059-1074, December 2024.
Abstract The study of European long‐term care (LTC) marketisation is dominated by institutional and ideational perspectives. In contrast, political economic theoretical frameworks have received little attention. This is paradoxical, because marketisation is an inherently political economic phenomenon.
Julien Mercille
wiley   +1 more source

Modelling of a Serial Hybrid Vehicle with HCCI Range Extender Engine

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2020
In this study, modelling of a serial hybrid electric car having homogenous charge compression ignition (HCCI) engine was conducted as a range extender. With the resistance forces acting on the vehicle, the powertrain model, battery and energy consumption
Hamit SOLMAZ, Tolga KOCAKULAK
doaj   +1 more source

The mechanism and effect factors of the combustion cycle‐to‐cycle variations in the spark ignition engine

open access: yesEnergy Science &Engineering, Volume 12, Issue 10, Page 4773-4787, October 2024.
The authors comprehensively reviewed the fundamental reasons and mechanism of cycle‐to‐cycle variations (CCVs) of a spark ignition (SI) engine. In addition, the characteristic parameters and characterization methods of the CCV, the laws and influencing factors of the CCV, and the numerical simulation methods of the CCV were introduced in detail to ...
Xiongbo Duan, Lining Feng, Yan Xia
wiley   +1 more source

A comparative study of the impact on combustion and emission characteristics of nanoparticle‐based fuel additives in the internal combustion engine

open access: yesEnergy Science &Engineering, Volume 12, Issue 1, Page 284-303, January 2024.
Methodology and results overview: With the purpose of enhancing the efficiency and reducing the emissions of an internal combustion engine, the paper studies various nanoadditives that are used with the conventional fuel. From the analysis of the data available, it was observed that graphene and ceria demonstrated significant improvement in the ...
Aveek Gupta   +8 more
wiley   +1 more source

Study of combustion behaviors for dimethyl ether as an alternative fuel using CFD with detailed chemical kinetics

open access: yesAlexandria Engineering Journal, 2017
In the present analysis, the dissemination of dimethyl ether (DME) as an alternative fuel with the charged air inside the HCCI engine chamber until accomplishing the burning procedure have been numerically expected by utilizing CFD with detailed chemical
Hagar Alm El-Din   +2 more
doaj   +1 more source

Study on the Combustion and Emission Characteristic of a Heavy‐Duty Natural Gas/Ammonia RCCI Engine with Diesel Ignition

open access: yesInternational Journal of Energy Research, Volume 2024, Issue 1, 2024.
As a carrier of hydrogen, ammonia has great potential in reducing pollution and carbon. This paper investigates the impact of diesel compression ignition on the combustion and emission performance of a natural gas/ammonia mixture RCCI engine through numerical simulation. The energy fraction of ammonia is set from 0% to 100% in the study to evaluate the
Weijian Zhou   +4 more
wiley   +1 more source

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