Results 71 to 80 of about 4,606 (263)

Development of Lean Burn High-Output Spark-Ignited Gas Engines(Experimental Study of Knocking in Lean Burn Gas Engines).

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1997
The study of knocking is key to increase the BMEP of lean burn gas engines. According to the results of FFT analysis of cylinder pressure in a 260 mm prototype engine, the peak frequency generally matches the calculated knocking frequency at a sound velocity of 900 m/s.
GOTO, Satoru, ITOH, Yasuhiro
openaire   +2 more sources

Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective

Advanced Functional Materials, EarlyView.
Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk, Lukas Benecke, Chokri Cherif, Johannes Mersch   +3 more
wiley   +1 more source

Composite dilution effect of exhaust gas recirculation and lean-burn on combustion and emissions of oxyhydrogen/bio-isopropanol/gasoline ternary fuel engine

Frontiers in Energy Research
The complementary utilization of oxyhydrogen and bio-isopropanol in carbon-neutral fuel engines can effectively enhance power output and combustion stability. However, oxyhydrogen blended combustion results in an increase in NOx emissions.
Zhanglei Lei, Zhe Zhao, Zhe Zhao, Zhongshu Wang, Zhongshu Wang, Yongqiang Han, Yongqiang Han, Fangxi Xie, Fangxi Xie, Yu Liu, Yu Liu, Xiaoping Li, Xiaoping Li, Beiping Jiang, Beiping Jiang, Zhaohui Jin, Zhaohui Jin, Xiangyang Wang, Xiangyang Wang   +18 more
doaj   +1 more source

Double‐Interpenetrating Composite Bioink for Multi‐Component 3D Bioprinting and Biofabrication

Advanced Functional Materials, EarlyView.
Marine‐polysaccharides‐derived double interpenetrating network hydrogel‐based bioink, combining the attributes of physical and ionic crosslinking, enables room‐temperature bioprinting of mechanically defined structures that can be handled and are cytocompatible.
Fabian Tribukait‐Riemenschneider, V. Prasad Shastri   +1 more
wiley   +1 more source

Study on combustion and emissions of methanol engines based on active pre-chamber jet ignition technology

Case Studies in Thermal Engineering
Against the backdrop of the ''dual carbon'' goals, this study addressed the challenges of narrow lean-burn limits and low thermal efficiency in conventional spark-ignition (SI) methanol engines by proposing the active pre-chamber jet ignition (APCH-JI ...
Yafeng Ren, Hong Jia, Jiaxin Qin, Qisheng Zhang, Jinyan Du   +4 more
doaj   +1 more source

An Experimental and Numerical Study on Supported Ultra-Lean Methane Combustion

Energies, 2019
With a much larger global warming potential (GWP) and much shorter lifespan, the reduction of methane emissions offers an additional opportunity and a relatively quick way of mitigating climate change in the near future.
Ho-Chuan Lin, Guan-Bang Chen, Fang-Hsien Wu, Hong-Yeng Li, Yei-Chin Chao   +4 more
doaj   +1 more source

Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents

Advanced Functional Materials, EarlyView.
A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster, Gianni Jacucci, Ouassef Nahi, Thomas Kress, Zabeada Aslam, Stuart Micklethwaite, Alexander N. Kulak, Rik Drummond‐Brydson, Melinda J. Duer, Yi‐Yeoun Kim, Silvia Vignolini, Fiona C. Meldrum   +11 more
wiley   +1 more source

HCNG for Sustainable Emission Reduction in SI Engines

Журнал інженерних наук
As the urgency for environmental protection and the need for alternative energy sources grow, the quest for substitutes for petroleum has become increasingly critical.
Baswana C. S., Narang S. A.
doaj   +1 more source

Packed Hydrogel Microfibers as Scaffolds Supporting Dynamic Cellular Behavior and Biomaterial Inks in 3D Printing

Advanced Healthcare Materials, EarlyView.
Packed hydrogel microfiber (PHM) materials consist of flexible and high aspect ratio hydrogel components that, as a bulk material, are simultaneously mechanically robust and dynamic. Cells cultured in or on PHM scaffolds can be influenced by topographical cues or interact with a dynamic environment that permits cell spreading and multicellular ...
M. Gregory Grewal, Remington M. Martinez, Georgia T. Helein, Montserrath G. Ibarra Rivera, Rodolfo Martinez Jr., Jenna L. Sumey, Steven R. Caliari, Christopher B. Highley   +7 more
wiley   +1 more source

Flame Front Propagation in an Optical GDI Engine under Stoichiometric and Lean Burn Conditions

Energies, 2017
Lean fueling of spark ignited (SI) engines is a valid method for increasing efficiency and reducing nitric oxide (NOx) emissions. Gasoline direct injection (GDI) allows better fuel economy with respect to the port-fuel injection configuration, through ...
Santiago Martinez, Adrian Irimescu, Simona Silvia Merola, Pedro Lacava, Pedro Curto-Riso   +4 more
doaj   +1 more source