Results 1 to 10 of about 47,254 (254)

Effect of gas flow rate on the gas-lubricated piston in a stirling cryocooler [PDF]

Scientific Reports
Using gas-lubricated pistons in Stirling cryocooler can reduce wear between the piston and cylinder, enhancing equipment reliability. This paper proposes a locally porous media-type gas-lubricated piston and investigates the regulatory effects of porous ...
Dandan Lei, Ankuo Zhang, Xiaoli Gong, Wenhui Yu, Chao Xiong, Haitao Chen   +5 more
doaj   +2 more sources

Analysis of piston oscillation cooling characteristics of OP2S engine piston

Case Studies in Thermal Engineering
The Opposed-Piston Two-Stroke (OP2S) engine is renowned for its high power density and significant thermal load, necessitating the incorporation of an internal cooling oil chamber within the piston to facilitate forced cooling.
Yong Liu, Xiaofeng Zhang, Cenbo Xiong, Fukang Ma, Yijie Song   +4 more
doaj   +3 more sources

Analysis of temperature field and thermo-mechanical coupling of oscillating cooling piston [PDF]

Journal of Hebei University of Science and Technology, 2023
In order to analyze the cooling effect of the internal cooling oil gallery on the piston, the temperature field and stress-strain distribution law of the oscillating cooling piston under thermal load, mechanical load and thermo-mechanical coupling were ...
Xiaomeng CHEN, Peiying PENG, Hairong ZHU, Jianhua WANG   +3 more
doaj   +1 more source

Casting of Combustion Engine Pistons Before and Now on the Example of FM Gorzyce [PDF]

Archives of Foundry Engineering, 2023
The article discusses the most important changes in the construction of permanent mould casting machines, as well as the method of casting engine pistons and their construction on the example of Federal-Mogul (FM) Gorzyce. The system of automatic cooling
M. Czerepak, J. Piątkowski
doaj   +1 more source

Study on the effect of inclination angle on two-phase oscillating flow and heat transfer characteristics of piston cooling galleries

Case Studies in Thermal Engineering, 2022
The uneven temperature distribution of piston is one of the main reasons for piston fatigue failure. Piston cooling gallery is an effective cooling method to achieve an acceptable piston temperature field.
Guangyi Xie, Jilin Lei, Xiwen Deng, Dewen Jia, Wei Deng, Xiangsen Jiang, Jun Wen   +6 more
doaj   +1 more source

Field synergy analysis of the heat transfer characteristics of cooling oil gallery in highly-intensified piston

Journal of Hebei University of Science and Technology, 2022
In order to study the oscillating heat transfer enhancement mechanism of the cooling oil gallery of highly-enhanced piston,the oscillatory flow and heat transfer process of engine-oil in the cooling oil gallery of piston were analyzed by the field ...
Hairong ZHU, Peiying PENG, Xiaomeng CHEN, Yahui WU, Jianhua WANG   +4 more
doaj   +1 more source

Effects of characteristic decomposed modes of the internal flow of a circular 90-degree bent nozzle on the behavior of the oil jet interface

Journal of Fluid Science and Technology, 2021
Methods of decreasing the CO2 emissions of the internal combustion engine have been suggested. For example, an engine can be designed with a high compression ratio and/or a downsizing turbocharger.
Mikimasa KAWAGUCHI, Ryoutaro NAKAYAMA, Lijuan MA, Keiya NISHIDA, Hideaki YOKOHATA, Masanobu KOUTOKU, Jun NISHIKAWA, Akira NAKASHIMA, Yoichi OGATA   +8 more
doaj   +1 more source

Stirling Thermodynamics using Phasor Notation [PDF]

E3S Web of Conferences, 2021
Phasor mathematics is used to develop the isothermal Stirling cycle and extended to the ideal adiabatic Stirling cycle. The results are developed for piston – piston (alpha) machines and displacer – piston (beta and gamma) machines.
Berchowitz David M.
doaj   +1 more source

Experimental and simulation study on heat transfer characteristics of aluminium alloy piston under transition conditions

Scientific Reports, 2022
In order to explore the thermal load change of the diesel engine piston under transitional conditions, and the influence of the position of cooling gallery on the heat transfer characteristics of the piston.
Yang Liu, Jilin Lei, Dongfang Wang, Xiwen Deng, Jun Wen, Zhigao Wen   +5 more
doaj   +1 more source

Numerical analysis of free-piston stirling cooler systems for improving cooling performance

Case Studies in Thermal Engineering, 2022
Free-piston Stirling coolers (FPSCs), where the spring is connected to a piston instead of a crankshaft to eliminate the complicated mechanism, have a simple structure, and exhibit high thermal efficiency and reliability.
Kyeong Ho Jang, Hong Seok Kim, Seong Hyuk Lee   +2 more
doaj   +1 more source