An experimental investigation of six cylinder di diesel engine fueled with mahua bio diesel using scr technique

Abstract

Edible/Non-Edible oils are non-conventional in wildlife and could be directly utilized as fuels in all types of Compression Ignition (CI) Engines. However, their greater viscosity and deprived volatility lead to decrease BTE and augmented smoke density and hydrocarbon (HC) emissions. Transesterification is the best method, by which kinematic/dynamic viscosity can be abridged reasonably and the esterified fuel can be espoused for CI Engines. The present transesterified edible/non-edible oil is prevalently known as Bio-diesel (or) Methyl Ester of Vegetable Oil. At present, a brief work is done to estimate the performance and emission parameters of the engine with Methyl Ester of Mahua Oil) (Madhuca Indica or Mahua) bio-diesel and its various mixtures with petroleum/conventional diesel. A Multi-Cylinder with Direct Injection (DI), water cooled diesel engine running a speed of 2400 rpm and emerging a power output of 71 kW is used for experiments. Base data is generated with diesel. Subsequently, bio-diesel blend 25% (B-25), bio-diesel blend 50% (B-50), biodiesel blend 75% (B-75) and bio-diesel blend 100% (B-100) blends are used. The engine is operated with various NOPs of 210, 220 and 230 bar and various static injection timings (SITs) of 17°, 18° and 19° bTDC for various loads under steady conditions wilt various mixtures of Mahua bio-diesel with petro-diesel, as fuel. It is seen that optimum NOP of 220 bar and the SIT of 18° bTDC are found to be suitable to have better results in terms of performance of CI Engine with Mahua bio-diesel various mixtures. In order to reduce oxides of nitrogen (NOx), the engine is operated with Selective Catalytic Reduction (SCR). The results are relatively compared with neat diesel operations at full load condition and also with blends of Mahua bio-diesel. From this study, it is concluded that the use of B-25 (25% of Mahua bio-diesel and 75% of diesel) shows reasonable reduction in emissions with comparatively better performance in the engine under consideration. newline