Biyodizel ve Karışımlarının Kullanıldığı bir Dizel Motorda Performans ve Emisyon Analizi

Bu çalışmada, atık palmiye yağı kökenli biyodizel ve petrol kökenli dizel yakıtı (PKDY) ile karışımlarının, bir dizel motordaki performans ve emisyon karakteristikleri üç boyutlu haritalar üzerinden analiz edilmiştir. Biyodizel ve karışımlarının performans ve emisyon karakterlerini belirlemek amacıyla, motor tam yük ve değişik devir testlerine tabi tutulmuştur. Analiz sonucunda, karışımdaki biyodizel oranı arttıkça PKDY'a göre özgül yakıt tüketiminde artış olduğu, motorun döndürme momentinde ise azalma meydana geldiği tespit edilmiştir. Emisyon analizi sonucunda ise, karışımdaki biyodizel oranı ile ilişkili olarak PKDY'a kıyasla yanmamış hidrokarbon (HC), karbon monoksit (CO) ve duman koyuluğu emisyonlarında iyileşmeler olduğu, bununla birlikte karbon dioksit (CO2) ve azot oksit (NOx) emisyonlarının motor devrine göre kararlı bir yapı sergilemediği belirlenmiştir

Analysis of Performance and Emmissions in a Diesel Engine Fueled with Biodiesel and Blends

In this study, the performance and emission characteristics of biodiesel based waste palm oil and its blends with petroleum based diesel fuel (PBDF) was analyzed by means of three dimensional maps. In order to determine the engine performance and exhaust emission characteristics, the engine was exposed with full load and varied speed tests. In the result of analyze, it was seen that the brake specific fuel consumptions increased with the increase of biodiesel percentage in the fuel blend, but brake torque decreased depending upon biodiesel percentage in the fuel. In the result of emission analyze, it has determined that biodiesel and its blends has provided significant improvements in HC, CO and smoke opacity emissions. However, the stable behaviors in NOx and CO2 emissions of biodiesel and its blends did not seen in terms of the engine speed

Determination of optimal combustion conditions in a diesel engine operating on ethanol/diesel mixtures

© 2023 Energy InstituteThis study aims to determine the optimum ethanol/diesel mixture ratio, boost pressure, and cycle duration for providing the maximum engine performance and the minimum exhaust emission levels in a diesel engine. The statistical analyses were performed using the L32 orthogonal array of the Taguchi. According to the calculated S/N ratios, it was revealed that there was almost a linear relationship between an increase in boost pressure and the selected engine output values. Similarly, a direct relationship was observed between the increasing alcohol content of the blend and the emissions of CO, CH4 and NOx. The analysis of variance (ANOVA) technique was utilized to investigate the contribution of the levels of control parameters on experimental variables. In all ANOVA analyses, R2 was 90% and above for all variables, while the goodness of fit was calculated to be at the lowest level in NH3 emission. According to ANOVA analysis results, it was seen that the boost pressure has a substantial impact on CO2 emission formation. The cycle duration has a dominant effect on cylinder gas pressure, thermal efficiency, fuel consumption and NOx emission. In contrast, the blend ratio considerably affects combustion noise, CO, CH4, and NH3 emissions. Mainly, improvements were observed in exhaust emission levels, excluding ammonia emissions, with the increase of boost pressure and blend type