Results 21 to 30 of about 927,567 (331)

Flight Time Optimization and Modeling of a Hybrid Gasoline–Electric Multirotor Drone: An Experimental Study

Aerospace, 2022
Drones have evolved rapidly over the decades, but the limited flight time inhibits multirotor drones from performing long-duration tasks. Batteries that power drones are considered an inadequate power source due to their low energy density.
Khaled Jarrah, Yazen Alali, Alyssa Lalko, Osamah Rawashdeh   +3 more
doaj   +1 more source

A Review of Gasoline Compression Ignition: A Promising Technology Potentially Fueled with Mixtures of Gasoline and Biodiesel to Meet Future Engine Efficiency and Emission Targets

Energies, 2019
Efforts have been made to develop efficient and alternative powertrains for internal combustion engines including combustion at low-temperature (LTC) concepts. LTC has been widely studied as a novel combustion mode that offers the possibility to minimize
Yanuandri Putrasari, Ocktaeck Lim
doaj   +1 more source

An Experimental Investigation into the Performance and Emission Characteristics of a Gasoline Direct Injection Engine Fueled with Isopropanol Gasoline Blends

Machines, 2023
Propanol isomers, which are oxygen-rich fuels, possess superior octane ratings and energy density in comparison to methanol and ethanol. Recently, due to advancements in fermentation techniques, these propanol isomers have garnered increased interest as ...
Simeon Iliev, Zdravko Ivanov, Radostin Dimitrov, Veselin Mihaylov, Daniel Ivanov, Stoyan Stoyanov, Slavena Atanasova   +6 more
doaj   +1 more source

Measurement report: Emissions of intermediate-volatility organic compounds from vehicles under real-world driving conditions in an urban tunnel [PDF]

Atmospheric Chemistry and Physics, 2021
Intermediate-volatility organic compounds (IVOCs) emitted from vehicles are important precursors to secondary organic aerosols (SOAs) in urban areas, yet vehicular emission of IVOCs, particularly from on-road fleets, is poorly understood.
H. Fang, H. Fang, H. Fang, X. Huang, X. Huang, X. Huang, Y. Zhang, Y. Zhang, Y. Zhang, C. Pei, C. Pei, C. Pei, Z. Huang, Y. Wang, Y. Chen, J. Yan, J. Zeng, J. Zeng, J. Zeng, S. Xiao, S. Xiao, S. Xiao, S. Luo, S. Luo, S. Luo, S. Li, S. Li, S. Li, J. Wang, J. Wang, J. Wang, M. Zhu, M. Zhu, M. Zhu, X. Fu, X. Fu, X. Fu, Z. Wu, Z. Wu, Z. Wu, R. Zhang, R. Zhang, R. Zhang, W. Song, W. Song, G. Zhang, G. Zhang, W. Hu, W. Hu, M. Tang, M. Tang, X. Ding, X. Ding, X. Bi, X. Bi, X. Wang, X. Wang, X. Wang, X. Wang   +58 more
doaj   +1 more source

Electricity powering combustion: hydrogen engines [PDF]

, 2012
Hydrogen is ameans to chemically store energy. It can be used to buffer energy in a society increasingly relying on renewable but intermittent energy or as an energy vector for sustainable transportation.
Boyer, Brad, Eichlseder, Helmut, Gerbig, Falk, Naganuma, Kaname, Tanno, Shiro, Verhelst, Sebastian, Wallner, Thomas   +6 more
core   +1 more source

Numerical Investigation on NOx Emission of a Hydrogen-Fuelled Dual-Cylinder Free-Piston Engine

Applied Sciences, 2023
The free-piston engine is a type of none-crank engine that could be operated under variable compression ratio, and this provides it flexible fuel applicability and low engine emission potential.
Chengqian Li, Yaodong Wang, Boru Jia, Zhiyuan Zhang, Anthony Roskilly   +4 more
doaj   +1 more source

Hydrogen SI and HCCI Combustion in a Direct-Injection Optical Engine [PDF]

, 2009
Hydrogen has been largely proposed as a possible alternative fuel for internal combustion engines. Its wide flammability range allows higher engine efficiency with leaner operation than conventional fuels, for both reduced toxic emissions and no CO2 ...
Aleiferis, PG, Rosati, MF
core   +1 more source

Effects of blending C3-C4 alcohols on motor gasoline properties and performance of spark ignition engines: A review

, 2020
Supplementing petroleum fuels with sustainable and renewable alternatives is a good option for increasing the sustainability of transportation fuels.
Saeid Aghahossein Shirazi, Bahareh Abdollahipoor, B. Windom, K. Reardon, T. Foust   +4 more
semanticscholar   +1 more source

Coefficient of Engine Flexibility as a Basis for the Assessment of Vehicle Tractive Performance

Chinese Journal of Mechanical Engineering, 2019
The paper attempts to analyze full load characteristics of over 500 combustion engines. Using statistical tools, the author determined the value of the coefficient of flexibility.
Dariusz Szpica
doaj   +1 more source

Comparative assessment of butanol and algae oil as alternate fuel for SI engines

Engineering Science and Technology, an International Journal, 2020
The main objective of this paper is to investigate the potential of butanol and algae oil as alternate fuels for SI Engines using blends of gasoline-butanol and gasoline-algae oil.
Manish Saraswat, Nathi Ram Chauhan
doaj   +1 more source