Results 11 to 20 of about 1,568,146 (394)

Effects of Piston Bowl Geometry on Combustion and Emissions of a Four-Stroke Heavy-Duty Diesel Marine Engine

Applied Sciences, 2022
Piston bowl geometry plays an important role in the fuel/air mixing quality which has a direct influence on the performance and emission characteristics of the engine.
Van Chien Pham, Jeong Kuk Kim, Won-Ju Lee, Su-Jeong Choe, Van Vang Le, Jae-Hyuk Choi   +5 more
doaj   +2 more sources

Development of a Marine Two-Stroke Diesel Engine MVEM with In-Cylinder Pressure Trace Predictive Capability and a Novel Compressor Model

Journal of Marine Science and Engineering, 2020
In this article, to meet the requirements of marine engine room simulator on both the simulation speed and simulation accuracy, a mean value engine model (MVEM) for the 7S80ME-C9.2 marine two-stroke diesel engine was developed and validated in the MATLAB/
Haosheng Shen, Jundong Zhang, Baicheng Yang, Baozhu Jia   +3 more
doaj   +2 more sources

Vibration characteristic analysis of single-cylinder two-stroke engine and mounting system optimization design. [PDF]

Sci Prog, 2020
Compared with four-stroke engines, single-cylinder two-stroke engines have the characteristics of small inertia, high rotational speed, and wide excitation frequency range.
Liang J, Zhang D, Wang S.
europepmc   +2 more sources

Study of the noise sources of an UAV with a two-stroke engine and shrouded propeller

, 2021
The widespread use of unmanned aerial vehicles poses the task of ensuring their low noise. To solve the problem of designing low-noise unmanned aerial vehicles, it is necessary to have data on the structure of the sound field of various unmanned aerial ...
P. A. Moshkov, V. Samokhin, A. Yakovlev
semanticscholar   +1 more source

CFD Analysis of the Fuel–Air Mixture Formation Process in Passive Prechambers for Use in a High-Pressure Direct Injection (HPDI) Two-Stroke Engine

Energies, 2020
The research on two-stroke engines has been focused lately on the development of direct injection systems for reducing the emissions of hydrocarbons by minimizing the fuel short-circuiting. Low temperature combustion (LTC) may be the next step to further
M. Ciampolini, S. Bigalli, F. Balduzzi, A. Bianchini, L. Romani, G. Ferrara   +5 more
semanticscholar   +1 more source

Systematic Investigation of a Large Two-Stroke Engine Crankshaft Dynamics Model

Energies, 2020
The crankshaft dynamics model is of vital importance to a multitude of aspects on engine diagnostics; however, systematic investigations of such models performance (especially for large two-stroke diesel engines that are widely used in the power ...
K. Tsitsilonis, G. Theotokatos, N. Xiros, M. Habens   +3 more
semanticscholar   +1 more source

Effectiveness of the Speed Reduction Strategy on Exhaust Emissions and Fuel Oil Consumption of a Marine Generator Engine for DC Grid Ships

Journal of Marine Science and Engineering, 2022
Recent developments in power electronics, energy storage systems, and renewable energy; increased market demands for more efficient and cleaner electric power to meet stricter environmental regulations; and development in gigawatt (GW)-class DC (direct ...
Van Chien Pham, Hanseok Kim, Jae-Hyuk Choi, Antony J. Nyongesa, Jongsu Kim, Hyeonmin Jeon, Won-Ju Lee   +6 more
doaj   +1 more source

Mean value first principle engine model for predicting dynamic behaviour of two-stroke marine diesel engine in various ship propulsion operations

International Journal of Naval Architecture and Ocean Engineering, 2022
Analysis of ship propulsion system performance is often performed using detailed hydrodynamic models to assess load changes, which are subsequently compared to static engine limits, or by detailed engine models that are rarely integrated with ...
Congbiao Sui, Peter de Vos, Douwe Stapersma, Klaas Visser, Hans Hopman, Yu Ding   +5 more
doaj   +1 more source

Determining the characteristics for the rational adjusting of an fuel-air mixture composition in a two-stroke engine with internal carburation

, 2020
An operating process for engines with spark ignition and direct fuel injection engines which ensures the formation of a stratified lean fuel-air charge under the modes of partial loads and the power composition of the fuel-air mixture at high loads has ...
V. Korohodskyi, Sviatoslav Kryshtopa, V. Migal, A. Rogovyi, Andrii Polivyanchuk, G. Slyn’ko, Volodymyr Manoylo, Oleh Vasylenko, O. Osetrov   +8 more
semanticscholar   +1 more source

A High-Efficiency Two-Stroke Engine Concept: The Boosted Uniflow Scavenged Direct-Injection Gasoline (BUSDIG) Engine with Air Hybrid Operation

Engineering, 2019
A novel two-stroke boosted uniflow scavenged direct-injection gasoline (BUSDIG) engine has been proposed and designed in order to achieve aggressive engine downsizing and down-speeding for higher engine performance and efficiency.
Xinyan Wang, Hua Zhao
doaj   +1 more source