A comprehensive view on performance, emission, and combustion characteristics of biodiesel-diesel blends at advanced injection timings

In this article, an endeavor has been made to assess the operating characteristics of a diesel engine fuelled with methyl esters of pungamia, ethyl esters of pungamia, and ethyl esters of neem, added to diesel by percentage volume ranging from B20 to B80. The test runs on diesel fuel in the first phase of work were carried out under standard injection timing of 23 degrees before top dead center (BTDC), so as to establish baseline for other parameters. The similar test procedures were repeated with an advanced injection timings of 26 degrees BTDC and 28 degrees BTDC fuelled with diesel and biodiesel-diesel blends varying from B20 to B100. Experimental results proved that the 3 degrees advancement of injection timing from the standard injection timing proved promising outcomes for biodiesel operated engine, whereas 5 degrees BTDC crank angle degree produced a higher exhaust gas temperature and higher levels of NOx formation. (C) 2013 AIP Publishing LLC.