Improving the efficiency of engine performance will require the design of systems with higher operating temperatures and pressures. These conditions will stress traditional lubricants beyond their current performance capabilities, and require the development of improved methods for friction and wear reduction. The most revolutionary approach to high-temperature lubrication is the concept of vapor phase delivery. An ashless organic compound can be vaporized by the heat of the operating engine or a carrier gas, and introduced into the ring zone of the cylinder. The vapor condenses or chemically binds with the piston ring or cylinder wall, and provides boundary lubrication. A minute amount of lubricant is constantly introduced in order to maintain a lubricating film. Each stroke of the piston shears off a portion of the lubricant layer, but condensing vapor continually replaces the surface film. Lubricant contributions to exhaust emissions are expected to be lower than those currently resulting from liquid lubricants. Vapor phase lubrication is an emerging concept that may be the key to the development of a commercial low heat rejection engine with improved energy efficiency and reduced emissions. The Department of Energy continues to fund research at a variety of industrial and academic institutions. Basic concepts and recent developments in the field of vapor phase lubrication will be reviewed.
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October 1993
Research Papers
Progress in Vapor Phase Lubrication Technology
D. G. Placek,
D. G. Placek
FMC Corporation, Princeton, NJ 08543
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T. Freiheit
T. Freiheit
Detroit Diesel Corporation, Detroit, MI 48239
Search for other works by this author on:
D. G. Placek
FMC Corporation, Princeton, NJ 08543
T. Freiheit
Detroit Diesel Corporation, Detroit, MI 48239
J. Eng. Gas Turbines Power. Oct 1993, 115(4): 700-705 (6 pages)
Published Online: October 1, 1993
Article history
Received:
August 1, 1992
Online:
April 24, 2008
Citation
Placek, D. G., and Freiheit, T. (October 1, 1993). "Progress in Vapor Phase Lubrication Technology." ASME. J. Eng. Gas Turbines Power. October 1993; 115(4): 700–705. https://doi.org/10.1115/1.2906762
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