Results 171 to 180 of about 1,013,931 (235)

The reciprocating motion characteristics of nanofluid inside the piston cooling gallery

Powder Technology, 2015
Abstract With the peak cylinder pressure in diesel engines steadily increasing, simply extending or modifying the cooling gallery configuration may be insufficient when power rating is above a certain level. The nanofluid with better heat transfer capacity may become a more appropriate option to improve piston cooling performance.
Peng Wang, Jizu Lv, Minli Bai, Gang Li, Ke Zeng   +4 more
openaire   +2 more sources

The flow and heat transfer characteristics of engine oil inside the piston cooling gallery

Applied Thermal Engineering, 2017
Abstract The current study employed the Eulerian multiphase model and the geometry reconstruction scheme to describe the periodic flow and heat transfer processes of engine oil inside the piston cooling gallery. The effects of engine speed and oil jet velocity on the heat transfer were explored.
Peng Wang, Ruobing Liang, Yuebin Yu, Jili Zhang, Jizu Lv, Minli Bai   +5 more
openaire   +2 more sources

Influence of cooling gallery structure on the flow patterns of two-phase flow and heat transfer characteristics

International Communications in Heat and Mass Transfer, 2020
Abstract In research of the accurate relation between two-phase flow pattern and heat transfer characteristics in distinct cooling gallery structures, a dynamic transient visualization test bench was established recording flow of fluid real-time. Meanwhile, multiphase flow model and dynamic mesh were also employed to carry out simulation calculation ...
Deng Lijun, Zhang Jian, Hao Guannan
openaire   +2 more sources

The gas-liquid two-phase flow in reciprocating enclosure with piston cooling gallery application

International Journal of Thermal Sciences, 2018
Abstract With the specific power of diesel engines steadily advancing, heat removal from the piston has become a determining factor to ensure engine reliability and durability of engines. However, piston head complex structure makes it very difficult to accurately capture the flow and heat transfer processes of cooling engine oil within the piston ...
Peng Wang, Kaihong Han, Sungmin Yoon, Yuebin Yu, Mingsheng Liu   +4 more
openaire   +2 more sources

Prediction of Temperatures on Pistons with Cooling Gallery in Diesel Engines using CFD Tool

SAE Technical Paper Series, 2003
<div class="htmlview paragraph">Thermal loading in pistons of diesel engines installed on commercial vehicles, such as trucks and buses, has been increased dramatically in recent years due to applications of technologies to meet low emission and high power requirements.
Hidehiko Kajiwara, Yukihiro Fujioka, Hideo Negishi   +2 more
openaire   +2 more sources

Heavy Duty Engine Piston Cooling Gallery Oil Filling Ratio Measurement and Comparison of Results With Simulation

Volume 1: Large Bore Engines; Fuels; Advanced Combustion, 2018
Pistons for heavy duty diesel applications endure high thermal loads and therefore result in reduced durability. Pistons for such heavy duty applications are generally designed with an internal oil gallery — called the piston cooling gallery (PCG) — where the intent is to reduce the piston crown temperatures through forced convection cooling and ...
Yu Chen, Shashank Moghe
openaire   +2 more sources

The Effects of the Cooling Gallery Position on the Piston Temperature Field and Thermal Stress

Applied Mechanics and Materials, 2010
The effects of cooling gallery position on the piston temperature field and thermal stress are studied. A finite element model of 1015 engine piston is developed using Pro/E software and finite element analyses are achieved through ANSYS code. Numerical simulations are performed to find the temperature and thermal stress change rules with regard to the
Jin Xiang Liu, Yue Wang, Wei Zheng Zhang
openaire   +2 more sources

Numerical Simulation on the Flow and Heat Transfer Process of Nanofluids Inside a Piston Cooling Gallery

Numerical Heat Transfer, Part A: Applications, 2013
Copper and diamond nanoparticles with diameters of 50 nm are added into conventional engine oil, respectively, to preparetwo new types of nanofluids, which are further used as the heat transfer medium for the piston cooling gallery. Detailed oil flow and heat transfer processes of copper-oil and diamond-oil nanofluids, with the volume fractions of 1 ...
Wang Peng, Lv Jizu, Bai Minli, Wang Yuyan, Hu Chengzhi, Zhang Liang   +5 more
openaire   +2 more sources

Experimental investigation on the heat transfer enhancement of wall modification inside a piston cooling gallery

Experimental Heat Transfer, 2022
Combined with visualization experiments, a square cavity reciprocating oscillation system is built based on CA6110 diesel engine to study heat transfer enhancement mechanism and explore a more efficient cooling method.
Jizu Lyu, Shengnan Chang, Linsong Gao, Zhiyuan Xing, Minli Bai   +4 more
openaire   +2 more sources

Flow-optimized cooling gallery concept for laser welded steel pistons to enable reduction of oil flow

Proceedings, 2019
Der Muldenrand von Stahlkolben ist grundsatzlich der thermomechanisch am hochsten belastete Bereich, so dass der Kuhlung mit uber Dusen zugefuhrtem Motorol in Kombination mit einem Muldenrandnahem Kuhlolkanal eine besonders hohe Bedeutung zukommt. Das Ziel weiterer Steigerung der thermischen Effizienz erhoht die Anforderungen an das Bauteil unter Druck-
Daniel Hrdina, Weiping Yang, Geno Marinov, Adam Loch   +3 more
openaire   +2 more sources