Effect of Fuel Quality on the Performance of High-Speed Direct Injection Diesel Engines 852077

Two fuels having different aromatics content and different cetane numbers were tested in a direct injection diesel engine with thermally insulated pistons. Actually tests were carried out with a full aluminum piston, an aluminum piston modified to accept a stainless steel crown and a similar one coated with ceramic. Higher combustion noise and emissions were detected using the degraded fuel, having fixed the type of piston. Furthermore, the experiments showed that thermal barrier adoption has a positive effect on the combustion noise.


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