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Study on the Cooling Method of Car Engine Pistons - Part 1, Basic Test for Achieving High Heat Transfer Coefficient
Technical Paper
2015-01-1653
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Car engine piston cooling is an important technology for improving the compression ratio and suppressing the deformation of pistons.
It is well known that thermal conductivity improves dramatically through the use of heat pipes in computers and air conditioners.
However, the heat pipes in general use have not been used for the cooling of engines because the flow of gas and liquid is disturbed by vibration and the thermal conductivity becomes excessively low.
We therefore developed an original heat pipe and conducted an experiment to determine its heat transfer coefficient using a high-speed reciprocation testing apparatus.
Although the test was based on a single heat pipe unit, we succeeded in improving the heat transfer coefficient during high-speed reciprocation by a factor of 1.6 compared to the heat transfer coefficient at standstill. This report describes the observed characteristics and the method of verification.
In the future, we plan to examine the application of this approach to engine pistons.
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Citation
Matsumoto, K., Harada, H., Taniguchi, H., and Ito, N., "Study on the Cooling Method of Car Engine Pistons - Part 1, Basic Test for Achieving High Heat Transfer Coefficient," SAE Technical Paper 2015-01-1653, 2015, https://doi.org/10.4271/2015-01-1653.Also In
References
- Wang , Q. et al. Studies of a Heat-Pipe Piston Crown Journal of Gas Turbines and Power 122 99 105 Jan. 2000 10.1115/1.483181
- Manganiello , E., J. Piston Temperature in an Air-Cooled engine for various operating conditions NACA report 698 1942
- Sanders , J., C. , and Schramm , W., B. Analysis of Variation of Piston Temperature with Piston Dimensions and Undercrown Cooling NACA report 895 1946
- Agarwal , A., K. , and Varghese , M., B. Numerical investigations of piston cooling using oil jet in heavy duty diesel engines Int. J. Engine Res. 7 411 421 2006 10.1243/14680874JER01804
- Kimura , U. et al. Steady and Transient Heat Transfer Characteristics of Flat Micro Heatpipe Furukawa Review 27 3 8 2005
- Sonoda , K. et al. Heat Pipe Cooling of Exhaust Valves for Improvement in Hot Corrosion Resistibility Bulletin of the M. E. S. J. 18 2 61 70 Oct. 1990 10.5988/jime1966.24.9_404
- Ling , J. et al. Analyses of Radially Rotating High-Temperature Heat Pipes for Turbomachinery Applicatons Transactions of the ASME 121 306 312 1999 10.1115/1.2817121
- Asias , A. et al. Instability of Heat Pipe Performance at Large Axial Accelerations Journal of Heat Transfer 129 137 140 2007 10.1115/1.2402177
- Charoensawan , P. et al. Closed loop pulsating heat pipes Part A: parametric experimental investigations Applied Thermal Engineering 23 2009 2020 2003 10.1016/S1359-4311(03)00159-5
- Ogushi , T. et al. Heat Transport Capability of Axial Grooved Heat Pipes Transactions of the Japan Society of Mechanical Engineers, Series B 64 618 520 525 1998