Results 1 to 10 of about 1,181 (95)

A transient numerical study for heat transfer and flow characteristics of dimpled piston cooling gallery of a diesel engine

Case Studies in Thermal Engineering, 2023
Piston cooling gallery is an effective cooling method to achieve an acceptable piston temperature field. This paper aims to analyze the effects of teardrop dimples size and dimple head-and-tail orientation on flow and heat transfer inside the cooling ...
Jinkun Wang, Xiwen Deng, Guangyi Xie, Jilin Lei, Dewen Jia   +4 more
doaj   +3 more sources

Effect of surface roughness on the oil distribution and the heat transfer coefficient for piston cooling gallery

Case Studies in Thermal Engineering, 2022
Piston cooling gallery plays a critical role in managing the temperature of the piston and its performance. This paper aims to study the effect of surface roughness on heat transfer coefficient (HTC) inside the cooling gallery.
Muhammad Hamza, Bing-Ang Mei, Zhengxing Zuo   +2 more
doaj   +3 more sources

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   +3 more sources

The lightweight design of steel pistons for diesel engines based on thermo-mechanical characteristics [PDF]

Scientific Reports
Traditional aluminum–silicon alloy pistons are gradually replaced by steel pistons, which has become the trend of future diesel engine development. However, the efficient design and broad application of steel pistons are limited by the higher density of ...
Yang Liu, Jilin Lei, Jikun Chen, Weiwei Gao, Hu Peng, Jianrui Wang   +5 more
doaj   +2 more sources

Experimental and simulation study on oscillating flow and heat transfer characteristics of the cooling gallery in steel pistons

Case Studies in Thermal Engineering
To characterize the oscillating flow and heat transfer characteristics of the cooling gallery inside a steel piston, a visual experimental platform was designed and constructed.
Yang Liu, Jilin Lei, Baojian Wang, Xiwen Deng, Dongjun Sun, Hong Wang   +5 more
doaj   +3 more sources

Research on the oscillating flow and heat transfer of the cooling gallery inside a multi-material composite piston

Case Studies in Thermal Engineering
The heat transfer ability of cooling gallery inside high-strengthened diesel engine composite piston is highly required. This article established an oscillating heat transfer model for gas-liquid two-phase flow of cooling gallery.
Haixiang Yang, Jilin Lei, Chunming Wang, Fanghao Sun, Xiwen Deng, Jun Wen, Xiangsen Jiang   +6 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

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

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