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In this study a Rule Based Mamdani-Type Fuzzy Modelling (RBMTF) was used to model and determine exhaust gas emissions of CO, CO2 and NOx of a single cylinder, four strokes, air cooled engine where a certain amount of hydrogen was mixed with the fuel. The RBMTF was developed on MATLAB Fuzzy Logic Toolbox software and supported with additional programs written on the MATLAB. The RBMTF model was designed to have two input parameters (the amount of hydrogen mixed into the diesel fuel and the engine speed) and one output parameter (the emission rates of CO, CO2 and NOx ) described by the ‘if then rules’. When the results obtained from RBMTF and statistical analyses of experimental data were compared, it was determined that R2 values were 97.7 % in CO, 96.84 CO2 and 97.31 % in NOx. These results were considered to be statistically acceptable and the exhaust emission values in hydrogen mixture rates not performed in experimental studies were predicted using RBMTF. As a result, the best results were obtained at the engine speed of 2400 rpm and 20% hydrogen by volume of the fuel.  Ozet: Bu calismada, egzoz gaz emisyonlarinin CO, CO2 ve NOx gazlarinin belirli bir miktarda hidrojen karistirilmis yakit ile tek silindirli , 4 vuruslu, hava sogutmali motorun modellemesi ve karar verilmesi icin Mamdani kural tabanli bulanik mantik tipi(MKTBMT) kullanilmistir. MKTBMT MATLAB’in bulanik mantik toolbox yaziliminda gelistirilmis ve MATLAB da yazilan ek programlar ile desteklenmistir. MKTBMT modeli iki girdi parametresi(dizel yakit icerisine karistirilan hidrojen miktari ve motor hizi) ve tek cikti parametresi (CO, CO2 ve NOx emisyon oranlari) icin tasarlanmistir ve eger ise kurali tarafindan tanimlanmistir. MKTBMT’den sonuclar elde edildiginde ve deneysel verilerin istatiksel analizleri karsilastirildiginda, R2 degerlerinin %97.7 CO, %96.84 CO2 ve %97.31 NOx olarak karar verilmistir. Bu sonuclar istatiksel olarak kabul edilebilri olarak dusunulebilir ve deneysel calismalarda basarilamayan egzoz emisyon degerlerindeki hidrojen karisim oranlari MKTBMT ile tahmin edilmistir. Sonuc olarak en iyi sonuclar 2400 dds(dakikadaki devir sayisi, rpm) ve hacim olarak %20 hidrojenli yakit ile elde edilmistir.

international journal of automotive engineering and technologies

The fuzzy logic modeling of diesel engine emissions using fuel mixed with different ratios of hydrogen / Farkl  Oranlarda Hidrojen Kar  t r lm   Yak t Kullanan Dizel Motor Emisyonlar   çin Bulan k Mant k Modellemesi