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TECHNICAL PAPERS: Internal Combustion Engines

Studies of a Heat-Pipe Cooled Piston Crown

[+] Author and Article Information
Q. Wang, G. Chen

Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208

Y. Cao, R. Wang, F. Mignano

Department of Mechanical Engineering, Florida International University, Miami, FL 33174

J. Eng. Gas Turbines Power 122(1), 99-105 (Jan 19, 1999) (7 pages) doi:10.1115/1.483181 History: Received February 26, 1998; Revised January 19, 1999
Copyright © 2000 by ASME
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References

Figures

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Structure of the simplified piston crown with an annular heat pipe
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Heat input and temperature measurement. (A total of 24 thermocouples were used. They were in five circles, three of them were on the outer surface and the other two were on the inner surface. The thermocouples on each circle were 90 apart forming eight lines in the longitudinal direction.)
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Photograph of the reciprocating engine-simulation tester
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Comparisons of the maximum temperature differences in the ring-bank area of the simplified piston with and without the heat pipe
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Simplified piston crowns with and without the heat-pipe channel, (a) with the annular heat-pipe channel; and (b) without the annular heat-pipe channel.
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FEM meshes for the simplified crown and the isolator on the top land: (a) the isolator; (b) the simplified crown.
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Comparison between the calculated and measured ring-bank temperatures for the simplified crown represented by the solid model structure in Fig. 5(a): (a) on the inner surface of the ring area, without the annular heat pipe (model (2)); (b) on the outer surface of the ring area, without the annular heat pipe (model (2)); (c) on the inner surface of the ring area, AHPCC (model (1)); and (d) on the outer surface of the ring area, AHPCC (model (1)).
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Calculated ring-bank temperatures for the crowns with a heat input of 255 W: (a) without the annular heat pipe (model (2)), solid structure shown in Fig. 5(a); (b) without the annular heat pipe (model (2)), solid structure shown in Fig. 5(b); and (c) with the annular heat pipe (AHPCC, model (1)).
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Isotherms for the crowns when the heat input is 255 W: (a) without the annular heat pipe, solid model shown in Fig. 5(a); (b) without the annular heat pipe, solid model shown in Fig. 5(b); and (c) with the annular heat pipe.
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Calculated ring-bank temperatures for the crowns when the heat input is 510 W: (a) without the annular heat pipe, solid model shown in Fig. 5(a); (b) without the annular heat pipe, solid model shown in Fig. 5(b); and (c) with the annular heat pipe.
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Isotherms for the simulated crown when the heat input is 510 W: (a) without the annular heat pipe, solid model shown in Fig. 5(a); (b) without the annular heat pipe, solid model shown in Fig. 5(b); and (c) with the annular heat pipe.

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