This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Study of the Critical Impingement Frequency of Fluid in Curved Pipes for Piston Applications
Annotation ability available
Sector:
Language:
English
Abstract
A new engine piston incorporating heat pipe cooling technology is under development for improved thermal-tribological. performance. Due to the particular structure of the engine piston, curved heat pipes should be employed. The objective of this paper is to study fluid impingement inside curved pipes for curved heat pipe design. Experimental studies of fluid impingement using different curved transparent pipes are performed on an engine-heat pipe apparatus to determine the correlation between the heat pipe design parameters and minimum cranking frequency, or critical impingement frequency. Experimental results show that pipe curvature has little influence on the critical impingement frequency if the non-dimensional offset value of curved pipes is less than 0.3. The critical impingement frequency is higher for the pipe with a longer length and smaller diameter. The liquid charge level should be more than 30% of the pipe volume to avoid any negative effect of the pipe curvature on the heat pipe performance.
Recommended Content
Authors
Topic
Citation
Wang, Q., Cao, Y., and Velasquez, A., "A Study of the Critical Impingement Frequency of Fluid in Curved Pipes for Piston Applications," SAE Technical Paper 960050, 1996, https://doi.org/10.4271/960050.Also In
References
- Cao, Y. Wang, Q 1995 “Engine Piston”
- Cao, Y. Wang, Q 1995 “Thermal Analysis of the Piston Cooling System with Reciprocating Heat Pipes,” J Heat Transfer Engineering
- Cao, Y. Wang, Q. Ling, J. 1995 “Operating Limitation of Reciprocating Heat Pipes for Piston Cooling Applications,” 1995 ASME Winter Conference
- Law, D. A. Day, R. A. 1969 “Oil Cooled Aluminum Alloy Diesel Engine Pistons--A New Approach,” SAE paper No.690749
- Mihara, K. Kidoguchi, I. 1992 “Development of Nodular Cast Iron Pistons with Permanent Molding Process for High Speed Diesel Engines,” SAE paper No. 921700
- Heywood, J. B. 1988 Internal Combustion Engine McGraw-Hill Book Company
- Wang, Q Cao, Y. Souto, A. 1995 “Development of a New Engine Piston Incorporating Heat Pipe Cooling Technology,” SAE paper No. 950521
- Wang, Q. Cao, Y. Chen, G. 1995 “Piston Assembly Design for Improved Thermal-Tribological Performance,” 1995 STLE Annual Meeting Tribology Transactions
- Wong, T. Y. Scott, C. G. Ripple, E. D. 1993 “Diesel Engine Piston Scuffing: A Preliminary Investigation,” SAE paper No. 930687