Combined Effects of JP-8 Fuel and Ceramic Thermal Barrier Coatings on the Performance and Emissions of a DI Diesel Engine
Abstract
An experimental study was conducted on the combined effects of using JP-8 Fuel in conjunction with thin thermal barrier coatings on the specific fuel consumption and emissions of UHC, NO, and smoke of a DI diesel engine. The experiments were conducted on a Ricardo Hydra single-cylinder DI diesel engine. Thin ceramic thermal barrier coatings were applied to various combustion chamber surfaces including the piston crown, cylinder head, and cylinder liner. Tests were run with the insulated surfaces installed individually, and with all coated parts installed together. The results were compared with those obtained from the baseline all-metal engine, and the results for all cases with JP-8 fuel were compared with runs conducted with hexadecane as a baseline fuel. The emissions and fuel consumption were observed for each case over a test matrix of three engine speeds, three load levels, and three injection timings. The engine performed satisfactorily on JP-8 fuel. No abnormal or adverse operating characteristics were observed in any of the configurations tested. The individual coating schemes can produce improvements in ore or more categories of emissions, but at the expense of an increase in another category. The choice of one insulation scheme over another depends on which emission product is considered most critical.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 13, 1999
- Accession Number
- ADA369867
Entities
People
- David E. Klett
- David M. Indire
Organizations
- North Carolina Agricultural and Technical State University