Powder-lubricated piston ring development
The overall objective of this program was to demonstrate the feasibility of a new particulate lubrication concept for reducing piston ring/cylinder liner wear in coal-water slurry-fueled diesels by replacing the present oil-lubricated system with powder lubrication that would utilize coal ash, either alone or in combination with another powder. The feasibility of this particular lubrication concept for reducing ring/liner wear was demonstrated in a series of experiments utilizing redesigned and properly selected components. Wear performance for suitable ring/liner materials lubricated with a powder that incorporates the abrasive ash particles was evaluated in terms of load capacity, friction, and rate of wear for the best combination of ring design, ring and liner materials, and powder constituents. In addition, the use of a powder-lubricated system in the upper portion of the cylinder isolated the particulates from the lower portions of the engine, thus further reducing engine wear. (VC)
- Research Organization:
- Mechanical Technology, Inc., Latham, NY (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC21-88MC25252
- OSTI ID:
- 5622795
- Report Number(s):
- DOE/MC/25252-3024; ON: DE91016655
- Country of Publication:
- United States
- Language:
- English
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Powder-lubricant piston ring for diesel engines
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Related Subjects
330102* -- Internal Combustion Engines-- Diesel
ABRASION
ASHES
CARBONACEOUS MATERIALS
COAL
COMBUSTION PRODUCTS
DIESEL ENGINES
DISPERSIONS
DOCUMENT TYPES
ENERGY SOURCES
ENGINES
FOSSIL FUELS
FUEL SLURRIES
FUELS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LUBRICATING PROPERTIES
MATERIALS
MIXTURES
PHYSICAL PROPERTIES
PISTONS
POWDERS
PROGRESS REPORT
RESIDUES
SLURRIES
SUSPENSIONS
WASTE PRODUCT UTILIZATION
WEAR