Results 61 to 70 of about 642 (201)

Experimental Comparison of HCCI and Spark-Ignited Combustion Using Gasoline and Ethanol: Efficiency, Stability and Emissions

Applied Sciences
Homogeneous Charge Compression Ignition (HCCI) combustion has been widely reported to offer high efficiency and ultra-low nitrogen oxide emissions compared to conventional spark-ignited (SI) combustion.
Patrick Schaber, Julian Bedei, Alexander Winkler, David Gordon, Jakob Andert   +4 more
doaj   +1 more source

Effects of Direct Fuel Injection Strategies on Cycle-by-Cycle Variability in a Gasoline Homogeneous Charge Compression Ignition Engine: Sample Entropy Analysis

Entropy, 2015
In this study we summarize and analyze experimental observations of cyclic variability in homogeneous charge compression ignition (HCCI) combustion in a single-cylinder gasoline engine.
Jacek Hunicz, Alejandro Medina, Grzegorz Litak, Pedro L. Curto-Risso, Lev Guzmán-Vargas   +4 more
doaj   +1 more source

A Numerical Investigation of the Effects of Piston Bowl Geometry and Spray Angle on Combustion, Performance and Emission of a Diesel Engine

Energy Science &Engineering, EarlyView.
A piston bowl's design and spray angle improve air‐fuel mixing, resulting in more complete combustion and higher efficiency. Ansys Forte 2023 R1 a CFD software was used to analyze the effects of five combustion chamber geometries of cylinder, modified re‐entrant, re‐entrant, double‐stepped, and stepped on engine performance, combustion, and emission ...
Md. Nazmul Haque, Abdullah Al Rifat, Tafsirul Hassan, Md. Ifthaker Alam, Mohammad Mehedi Hasan Kazol, Md. Ashraful Islam, Abidur Rahman Adib, Mizanur Rahman   +7 more
wiley   +1 more source

Hydrogen‐Enriched Tri‐Fuel Combustion for Low‐Carbon Engines at Medium Engine Load: A Comprehensive CFD Analysis

Energy Science &Engineering, EarlyView.
CFD analysis of a diesel–CH4–H2 tri‐fuel engine shows that increasing hydrogen energy share (HES) enhances mixing and accelerates combustion, improving pressure, efficiency, and reducing CO and soot. At 60% HES, ISFC improves 26.2%, soot drops 95%, while NOx increases due to higher temperatures. ABSTRACT The global commitment to achieve net‐zero carbon
Md. Ifthaker Alam, Tafsirul Hassan, Md Imtiaz Hossen, Md. Shaib Hossain, Bandhon Saha Bijoy   +4 more
wiley   +1 more source

Architecting nano‐Al/HMX/CuO energetic micro‐units unlocks superior interface and highly efficient combustion

InfoMat, EarlyView.
Improving the dispersion of nano‐aluminum is of great importance in explosives and propellants. The spherical Al/HMX/CuO energetic micro‐units were prepared using microchannel technology, which significantly improved the uniformity and dispersion of nano‐Al. It also enhanced the mass and heat transfer efficiency between the fuel and oxidizer components,
Gazi Hao, Tianxu Xi, Yong Kou, Cheng Zhang, Ronghuan Yang, Jiahao Yu, Qiangqiang Lu, Hongyu Yang, Chong Chen, Lei Xiao, Jun Di, Fengqi Zhao, Wei Jiang   +12 more
wiley   +1 more source

Flame‐Retardant Quasi‐Solid‐State Electrolytes From Self‐Assembled Azolate Hybrid Frameworks for Highly Safe Lithium Batteries

Angewandte Chemie, Volume 138, Issue 34, 17 August 2026.
This work develops a spray‐assisted in situ assembly technique to construct AHF materials with nitrogen/oxygen‐regulated one‐dimensional channels on glass fiber, providing abundant active sites and enabling rapid transport for lithium ions. Subsequently, phosphate flame retardants are encapsulated via in situ polymerization, resulting in a thermally ...
Shun Wang, Qimin Zhu, Yuanyuan Tian, Peiyu Cui, Qing Ji, Tian Xie, Hong Wang, Dong Zhou, Guoxiu Wang, Wenhuan Huang   +9 more
wiley   +2 more sources

A Review on Homogeneous Charge Compression Ignition and Low Temperature Combustion by Optical Diagnostics

Journal of Chemistry, 2015
Optical diagnostics is an effective method to understand the physical and chemical reaction processes in homogeneous charge compression ignition (HCCI) and low temperature combustion (LTC) modes.
Chao Jin, Zunqing Zheng
doaj   +1 more source

Identification of Suitable Ignition Conditions for Stable Switch from SI to HCCI of a Blowdown Supercharged Engine

International Journal of Automotive Engineering, 2013
In this paper, the necessary in-cylinder conditions for the transition from spark ignion (SI) to homogeneous charge compression ignition (HCCI) are analyzed. The hereby important factors for ignition time are investigated analytically. A control oriented
Jagsch Michael, Yasuo Moriyoshi, Tatsuya Kuboyama   +2 more
doaj   +1 more source

Development of Flame Retarded Battery Casings Using Glass Fiber‐Reinforced Epoxy Resin

Polymer Composites, EarlyView.
Development of flame retarded battery casings using glass fiber‐reinforced epoxy resin by exploiting the synergistic action of APP and TiO2 to promote the formation of a coherent ceramic‐phosphate char layer. ABSTRACT This study investigates the development of glass fiber‐reinforced epoxy resin composites with enhanced fire performance for application ...
Ákos Pomázi, Zsófia Kovács, Beáta Szolnoki, Gábor Szebényi, Andrea Toldy   +4 more
wiley   +1 more source

Polarity‐Engineered, Tribo‐Positive Imidazolium‐Mediated Crosslinked 6FDA‐Durene Films for Triboelectric Nanogenerator

Small, EarlyView.
Imidazolium‐mediated crosslinking transforms 6FDA‐durene PI from tribo‐negative to tribo‐positive by modulating the surface electronic structure and charge‐transfer behavior. DFT calculations confirm the experimentally observed polarity transition.
Sorour Faramarzi, Shabnam Yavari, Ukiliaiym Ospanova, Adilet Shynggys, Irshad Kammakakam, Haifeng Ji, Jiayi Wang, Zhen Wen, Gulnur Kalimuldina   +8 more
wiley   +1 more source