Results 51 to 60 of about 17,550 (268)

Advanced Numerical Analysis of In-Cylinder Combustion and NO_x Formation Using Different Chamber Geometries

Fire
In diesel engines, emission formation inside the combustion chamber is a complex phenomenon. The combustion events inside the chamber occur in microseconds, affecting the overall engine performance and emissions characteristics.
Arun Teja Doppalapudi, Abul Kalam Azad
doaj   +1 more source

Simulation model for different bolted precombustion chamber (PCC) for spark ignition engine

MATEC Web of Conferences, 2017
In an engine, two combustion chamber are present in the cylinder. First, the main combustion chamber and the other is called the auxiliary combustion chamber also known as pre-combustion chamber (PCC).
Muhamad Tajuddin Khairil Amri, Mohd Tahir Musthafah, Salim Mohd Azli, Mansor Muhd Ridzuan, Akop Mohd Zaid, Md. Saad Adzni   +5 more
doaj   +1 more source

Oxygen‐Assisted MOCVD Growth of Monolayer PtSe2 Films With Bandgap Opening for Semiconducting FET Channels

Advanced Science, EarlyView.
Monolayer PtSe2 films are successfully grown via optimized MOCVD, achieving uniform coverage over a 1.5 cm × 1.5 cm area. Oxygen‐assisted growth effectively removes carbon impurities, ensuring high film quality. Array‐level FETs based on monolayer PtSe2 channels demonstrate low off‐current and high ION/IOFF ratios, highlighting the potential of PtSe2 ...
Yuseok Kim, Hee‐Soo So, Minseok Yoo, Saeyoung Oh, Dongyoung Kim, Minseung Gyeon, Min‐Kyung Jo, Gichang Noh, Tae Soo Kim, Min‐gyu Kim, Jeongwon Park, Hyun‐Jun Chai, Minsoo Kang, Suhyun Kim, Ayoung Ham, Jaehyun Lee, Jongsun Lim, Seungwoo Song, Joon Young Kwak, Seunghwan Seo, Chang‐Soo Lee, Chang Gyoun Kim, Kibum Kang   +22 more
wiley   +1 more source

Discovering Early‐Stage Gas Generation Kinetics Enables Thermal Runaway Early Warning in Lithium‐Ion Batteries

Advanced Science, EarlyView.
Operando gas diagnostics reveal a previously unrecognized chemical activation (CA) stage during thermal runaway in lithium‐ion batteries. A physics‐informed gas generation kinetics network (GGKNet) is developed to reconstruct reaction pathways and physical models automatically.
Jiabo Zhang, Qianzhen Guo, Shuaiqi Liu, Shuai Li, Xianghao Kong, Dong Han, Zhen Huang   +6 more
wiley   +1 more source

Effect of Improved Combustion Chamber Design and Biodiesel Blending on the Performance and Emissions of a Diesel Engine

Energies
This study aims to investigate the impact of combustion chamber geometry and biodiesel on the performance of diesel engines under various load conditions.
Ziming Wang, Yanlin Chen, Chao He, Dongge Wang, Yan Nie, Jiaqiang Li   +5 more
doaj   +1 more source

Combustion analysis in a natural gas engine with pre-chamber by three-dimensional numerical simulation

Nihon Kikai Gakkai ronbunshu, 2015
Highly efficient natural gas engines have been widely used in wide range of sectors from industry and transportation. However, because combustion process in gas engines with a pre-chamber is very complicated, it is difficult to experimentally investigate
Satoshi HOKIMOTO, Tatsuya KUBOYAMA, Yasuo MORIYOSHI, Toshio YAMADA   +3 more
doaj   +1 more source

Combustion instability control in the model of combustion chamber

Journal of Physics: Conference Series, 2013
An experimental study of the influence of external periodic perturbations on the instability of the combustion chamber in a pulsating combustion. As an external periodic disturbances were used sound waves emitted by the electrodynamics. The purpose of the study was to determine the possibility of using the method of external periodic perturbation to ...
Akhmadullin A., Ahmethanov E., Iovleva O., Mitrofanov G.   +3 more
openaire   +3 more sources

A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks

Advanced Science, EarlyView.
Conceptual illustration of a Global Ecosystem Methane Observing System (GEM‐OS) integrating satellites, aircraft, atmospheric networks, and ecosystem measurements to quantify methane emissions from anthropogenic and natural sources. The multi‐scale observing framework improves source attribution, reduces uncertainty in regional methane budgets, and ...
P. Ciais, S. Peng, J. Chang, F. Li, Q. Zhu, K. Yuan, G. Hugelius, H. Li, Y. Cai, F. Chevallier, K. Tibrewal, E. A. Kort, K. Arndt, J. Watts, B. Buma, N. Besic, P. I. Palmer, H. Cadillo‐Quiroz, E. Euskirchen, M. J. Gondwe, A. Hoyt, R. Jackson, S. Malone, D. Monteverde, S. Natali, M. Ramonet, C. Rey‐Sanchez, L. B. Sagang, E. A. G. Schuur, R. Vargas, R. Varner, Z. Zhang, B. Poulter   +32 more
wiley   +1 more source

CFD Study on Hydrogen-Air Premixed Combustion in a Micro Scale Chamber [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2010
This paper reports a CFD modeling study to investigate the hydrogen-air mixture combustion in a micro scale chamber. Nine species with nineteen reversible reactions were considered in the premixed combustion model.
Sayed Reza Shabanian, Masoud Rahimi, Abbas Khoshhal, Ammar Abdulaziz Alsairafi   +3 more
doaj  

Hot Test Studies in a Spark Ignited Vortex Combustion Chamber

Chemical Engineering Transactions, 2018
Hot tests are performed in a vortex combustion chamber using gaseous oxygen and gaseous hydrogen as the propellants by varying their mixture ratios, and nozzle throat diameter.
Rajesh Thalappil Naduvilethil, Sarvoththama Jothi Thurvas Jegathjothi, Jayachandran Thankappan   +2 more
doaj   +1 more source