Enhancement in Performance and Emission Characteristics of Soybean Biodiesel by using Sr-ZnO Nanoadditives in VCR Engine

Abstract

In present literature effect of strontium zinc oxide (Sr-ZnO) nanoparticle on soybean biodiesel were studied at 21.5 compression ratio various tests were carried out to find out optimum useful compression ratio for soybean nanofuel at three different doses level. We found very similar characteristics in soybean biodiesel as compared to diesel fuel. Also, huge quantity of soybean is
available in Asian subcontinent. Although some of limitations like poor flow properties, high density, low heating value, high NOx emission and low cetane number etc. that can be overcome by addition of suitable nanoadditives. Soybean biodiesel was prepared with transesterification process. Morphological study of nano-particles was done to understand its behavior. Sodium dodecyl sulfate (SDS) surfactant was used to stabilize nanosolution. After making combination of all possible nanofuel blends physicochemical properties of blends was tested in Apex innovation laboratory Sangli as per American Society for Testing and Materials (ASTM) standards. Performance and emissions readings were taken at different loads and compression ratios from the different results it was found that with addition of Sr-ZnO nano-particles break thermal efficiency (BTE) was increased by 9.66%, brake specific fuel consumption (BSFC) decreases by 7.22%; also carbon monoxide (CO), hydrocarbons (HC), nitrogen oxide (NOX) emissions was reduced significantly because of better combustion efficiency. At high load NOx increases with comparable amount with all fuel blends. Further NOx can be minimized by exhaust gas recirculation (EGR) method.