Application of thermal isolation to the combustion chamber of a single cylinder diesel engine and its effects on performance and emission

Authors : Uğur ÖZTÜRK

Pages : 116-122

View : 15 | Download : 9

Publication Date : 2019-09-28

Article Type : Research Paper

Abstract :In this study, the effects of boron based thermal barrier coating insert ignore into journalissuearticles values(Fe 2 B and NiCrBSi); on the performance and emission of a single cylinder diesel engine were investigated.  In the coating process of the engine parts, two difference methods were used. Cylinder liner and valves were coated with solid boronizing and the top surface of the piston is coated with plasma spray method. Boron layer insert ignore into journalissuearticles values(Fe 2 B); and NiCrBSi have low thermal conductivity and high thermal resistance. So that, the combustion chamber of diesel engine was converted in to insulated form. Tests were carried out under 5 speeds insert ignore into journalissuearticles values(1800-2100-2400-2700-3000 rpm); of diesel engine. commercial D-2 was used as test fuel. Coated insert ignore into journalissuearticles values(CE); and standart engine insert ignore into journalissuearticles values(SE); test results were compared. Comprehensive analyzes have shown that brake specific fuel consumption insert ignore into journalissuearticles values(BSFC); was reduced by 11 %, in the CE. On the other hand, CO and HC emissions of the CE decreased by 33-17 %, repectively. And NOx emission increased by 14 % .
Keywords : Boronizing, thermal barrier, engine, performance