Results 41 to 50 of about 18,809 (307)

Monte Carlo Simulation Methodology to Assess the Impact of Ambient Wind on Emissions from a Light-Commercial Vehicle Running on the Worldwide-Harmonized Light-Duty Vehicles Test Cycle (WLTC)

Energies, 2021
A Monte Carlo simulation methodology is suggested in order to assess the impact of ambient wind on a vehicle’s performance and emissions. A large number of random wind profiles is generated by implementing the Weibull and uniform statistical ...
Alexandros T. Zachiotis, Evangelos G. Giakoumis   +1 more
doaj   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Research on the influence of key structural parameters on piston secondary motion

Scientific Reports, 2021
Piston secondary motion not only influences the side knocking of piston and frictional loss, but also influence the in-cylinder oil consumption and gas blow-by. An inline four-cylinder common rail diesel engine was chosen as the research object.
Haixiang Yang, Jilin Lei, Xiwen Deng, Jun Wen, Zhigao Wen, Guofu Song, Rui Mo   +6 more
doaj   +1 more source

Spin‐Crossover Confinement in Mesoporous Matrices Enables Tunable Porosity for Molecular Sensing

Advanced Materials Interfaces, EarlyView.
The integration of hierarchically organized porous frameworks with spin‐crossover nanodomains enables cooperative interactions across multiple length scales. This hybrid design merges dynamic molecular switching with tunable porosity, yielding materials whose structural and functional responses are actively modulated by confinement and guest uptake ...
Lucia B. Pizarro, Matias Rafti, Annette Andrieu‐Brunsen, Marcelo Ceolín   +3 more
wiley   +1 more source

Potential analysis of a predictive energy management strategy designed to increase the efficiency of the powertrain in a hybrid vehicle with use of online available route information

Automotive and Engine Technology
Hybrid vehicles, with their combined use of internal combustion engines and electric motors, present a unique opportunity to leverage intelligent control strategies for optimal performance.
Christian Riegelbeck, Raja Sangili Vadamalu, Alexander Stalp, Lea Schwarz   +3 more
doaj   +1 more source

A New Mechanism Enabling Micron Scale Electron–Hole Synchronized Recombination in Bulk Halide Perovskites

Advanced Optical Materials, EarlyView.
This work reports the first observation of long‐range synchronized photoluminescence blinking in vapor‐grown, fully inorganic CsPbBr3 microcrystals, extending over 10 µm. The observations contradict supertrap‐based models and link blinking to Pb‐rich growth conditions. A new mechanism is established, in which hole diffusion mediates collective electron–
Noam Veber, Roman V. Li, Eduard A. Podshivaylov, Betty Shamaev, Saar Shaek, Emma H. Massasa, Salma Lahwani, Rotem Strassberg, Kobi Cohen, Mengxia Liu, Pavel A. Frantsuzov, Yehonadav Bekenstein   +11 more
wiley   +1 more source

The Diesel Fuel Post-Injection into Engine Cylinder as Method of Nox Reduction

Communications, 2003
The possibilities of limiting the emission of nitrogen oxides in the cylinder of the diesel engine by means of its design and operating parameters are limited. This is why studies of the effectiveness of various methods for NOx reduction in exhaust gases
Zygmunt Szlachta, Jerzy Cisek
doaj   +1 more source

Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC

Advanced Robotics Research, EarlyView.
The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang, Jianyang Dong, Yongming Yao, Kaijin Hu, Jianxiong Cui, Yikai Luo, Jiawen Zhang, Shichao Niu   +7 more
wiley   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

Synergistic Effects of Surface Texture and Cryogenic Treatment on the Tribological Performance of Aluminum Alloy Surfaces

Lubricants
In order to improve the tribological properties of the 7075-T6 aluminum alloy used on the rotor surface, a combined method of cryogenic treatment and laser surface texture treatment was applied.
Rui Liu, Xiwen Deng, Xuejian Sun, Jilin Lei, Dewen Jia, Wengang Chen, Qiang Ji   +6 more
doaj   +1 more source