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A dynamic analysis of rotary combustion engine sealsReal time work cell pressures are incorporated into a dynamic analysis of the gas sealing grid in Rotary Combustion Engines. The analysis which utilizes only first principal concepts accounts for apex seal separation from the crochoidal bore, apex seal shifting between the sides of its restraining channel, and apex seal rotation within the restraining channel. The results predict that apex seals do separate from the trochoidal bore and shift between the sides of their channels. The results also show that these two motions are regularly initiated by a seal rotation. The predicted motion of the apex seals compares favorably with experimental results. Frictional losses associated with the sealing grid are also calculated and compare well with measurements obtained in a similar engine. A comparison of frictional losses when using steel and carbon apex seals has also been made as well as friction losses for single and dual side sealing.
Document ID
19840006451
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Knoll, J. (Michigan Technological Univ. Cleveland, OH, United States)
Vilmann, C. R. (Michigan Technological Univ. Cleveland, OH, United States)
Schock, H. J. (NASA Lewis Research Center)
Stumpf, R. P. (NASA Lewis Research Center)
Date Acquired
September 4, 2013
Publication Date
January 1, 1984
Subject Category
Mechanical Engineering
Report/Patent Number
E-1902
NAS 1.15:83536
NASA-TM-83536
Report Number: E-1902
Report Number: NAS 1.15:83536
Report Number: NASA-TM-83536
Meeting Information
Meeting: Ann. Congr. and Exposition
Location: Detroit, MI
Country: United States
Start Date: February 27, 1984
End Date: March 2, 1984
Sponsors: SAE
Accession Number
84N14519
Funding Number(s)
PROJECT: RTOP 505-40-62
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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