Results 51 to 60 of about 12,068 (311)

Ultra-Lean Premixed Turbulent Combustion: Challenges of RANS Modelling

, 2022
The main challenge of improving spark ignition (SI) engines to achieve ever increasing thermal efficiencies and near-zero pollutant emissions today concerns developing turbulent combustion under homogeneous ultra-lean premixed mixtures (HULP).
Tommaso Lucchini, Angelo Onorati, Lorenzo Sforza, Suliman Abdelwahid   +3 more
core   +1 more source

Interlayer Expansion of Bulk MoS2 via Top‐Down Organic Pillaring Enables Tunable Li+ Intercalation and Controlled Solvent Co‐Intercalation

Advanced Functional Materials, EarlyView.
Top‐down organic pillaring expands the interlayer spacing of bulk‐sized MoS2 particles while preserving the bulk morphology. Operando X‐ray diffraction and electrochemical dilatometry show that MoS2‐bulk undergoes solvent co‐intercalation in diglyme electrolyte, causing large structural expansion, while pillared, expanded MoS2 suppresses solvent uptake
Jaehoon Choi, Pakornrum Tulaphon, Franz Jacobi, Kyeonghyeon Nam, Jameela Karol, Mete B. Durukan, Christoph Scheurer, Desirée Leistenschneider, Simon Fleischmann   +8 more
wiley   +1 more source

Study on the lean limit and thermal efficiency of an SI engine equipped with newly developed in-cylinder flow-control adapter

Journal of Thermal Science and Technology
Lean combustion technology has been one of the promising approaches for developing next-generation engines with high thermal efficiency and low environmental impact. However, the practical lean limit of such engines is typically constrained by combustion
Tatsuhiro MIWA, Ye WANG, Sayaka SUZUKI, Mamoru TANAHASHI   +3 more
doaj   +1 more source

Research Progress of Hydrogen/Ammonia Gas Turbine Combustion Chambers [PDF]

MATEC Web of Conferences
Ammonia/hydrogen mixed fuel is important for the deep decarbonization of gas turbines. However, the combustion characteristics of the mixed fuel are at two opposite extremes: the highly reactive hydrogen is easily flashback; the less reactive ammonia has
Zhang Junyan
doaj   +1 more source

Experimental study on combustion and emission of ternary-fuel combined supply SI engine with oxyhydrogen/butanol/gasoline at different excess air ratios

Case Studies in Thermal Engineering, 2023
Both oxyhydrogen and butanol are renewable alternative fuels. Based on gasoline/butanol compound injection mode, although the introduction of oxyhydrogen can effectually enhance the optimal BDIr (butanol direct injection ratio), it also leads to an ...
Zhe Zhao, Yan Huang, Zhen Shang, Xiumin Yu, Ping Sun, Luquan Ren, Tao Sang, Ming Li, Ziyuan Li   +8 more
doaj   +1 more source

Computational studies on HCCI engines. [PDF]

, 2010
Emission legislation is changing in an effort to reduce exhaust emissions from the IC engines. Research and development has been focused on improving both spark-ignition and compression ignition engines to make them more efficient.
Correia, Eduardo Rodrigues
core  

Large-eddy simulation of kerosene spray combustion in a model scramjet chamber

, 2010
Large-eddy simulation (LES) of kerosene spray combustion in a model supersonic combustor with cavity flame holder is carried out. Kerosene is injected through the ceiling of the cavity.
Zhang, Man, Hu, Zhiwei, He, Guoqiang, Liu, Peijin   +3 more
core   +1 more source

2D Co‐Mo‐Hydroxide‐Based Multifunctional Material for the Development of H2‐Based Clean Energy Technologies

Advanced Materials, EarlyView.
2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil, Celia Castillo‐Blas, Dawid Krystian Feler, Isabel Gómez‐Recio, Miguel Tinoco, Ana Querejeta‐Fernández, Rodrigo González‐Prieto, Felipe Gándara, Romualdo Santos Silva Jr, Pilar Ferrer, Carlos Prieto, Luc Lajaunie, José Luis Martinez‐Peña, María Luisa Ruiz‐González, José María González‐Calbet   +14 more
wiley   +1 more source

Experimental Studies of Low-Load Limit in a Stoichiometric Micro-Pilot Diesel Natural Gas Engine

Energies, 2022
While operating at light loads, diesel pilot-ignited natural gas engines with lean premixed natural gas suffer from poor combustion efficiency and high methane emissions.
Vinicius Bonfochi Vinhaes, Gordon McTaggart-Cowan, Sandeep Munshi, Mahdi Shahbakhti, Jeffrey D. Naber   +4 more
doaj   +1 more source

Lean limit combustion in an expanding chamber [PDF]

Symposium (International) on Combustion, 1979
Incomplete combustion of methane-air mixtures in the bulk gas, as opposed to the wall boundary layer, due to chamber expansion has been observed over the equivalence ratio range 0.563≤≤0.615. Experimental observations and corresponding numerical calculations indicate that the unburned gas density plays a critical role in the process.
O.I. Smith, C.K. Westbrook, R.F. Sawyer
openaire   +1 more source